Pei Chen
Methods and Application of Food Composition Laboratory
Research Chemist
Phone: (301) 504-8144
ext. 238
Fax: (301) 504-8314
Room 105B
BLDG 161 BARC-EAST
BELTSVILLE, MD
Publications
(Clicking on the reprint icon
will take you to the publication reprint.)
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A systematic approach to determine the impact of elevated CO2 levels on the chemical composition of wheat (Triticum aestivum)
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(Peer Reviewed Journal)
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Geng, P., Sun, J., Chen, P., Li, Y., Peng, B., Harnly, J.M. 2020. A systematic approach to determine the impact of elevated CO2 levels on the chemical composition of wheat (Triticum aestivum). Journal of Cereal Science. 95:753. https://doi.org/10.1016/j.jcs.2020.103020.
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Quantification of cranberry proanthocyanidins by normal phase high performance liquid chromatography using relative response factors
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(Peer Reviewed Journal)
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Characterization of Maca (Lepidium meyenii/Lepidium peruvianum)
Using a Mass Spectral Fingerprinting, Metabolomic Analysis,
and Genetic Sequencing Approach
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(Peer Reviewed Journal)
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Geng, P., Sun, J., Brand, E., Frame, J., Meissner, H., Stewart, J., Clark, S., Miller, J., Harnly, J.M., Chen, P., Gafner, S. 2020. Characterization of Maca (Lepidium meyenii/Lepidium peruvianum) using a mass spectral fingerprinting, metabolomic analysis, and genetic sequencing approach. Planta Medica. 169:453–468. https://doi.org/10.1055/a-1161-0372.
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Effect of nighttime UV-C irradiation of strawberry plants on phenolics content of the fruit using targeted and non-targeted metabolomic analysis
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(Peer Reviewed Journal)
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Chemical composition of cold-pressed blackberry seed flour extract and its potential health-beneficial properties
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(Peer Reviewed Journal)
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Choe, U., Li, Y., Gao, B., Yu, L., Wang, T.T., Sun, J., Chen, P., Yu, L. 2020. Chemical composition of cold-pressed blackberry seed flour extract and its potential health-beneficial properties. Food Science and Nutrition. 8(2):1215-1225. https://doi.org/10.1002/fsn3.1410.
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Determination of variance of secondary metabolites in lettuces grown under different light sources by flow injection mass spectrometric (FIMS) fingerprinting and ANOVA-PCA
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(Peer Reviewed Journal)
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Sun, J., Zhang, M., Luo, Y., Kubdelia, N., Harnly, J.M., Chen, P. 2018. Determination of variance of secondary metabolites in lettuces grown under different light sources by flow injection mass spectrometric (FIMS) fingerprinting and ANOVA-PCA. Journal of Analysis and Testing. 2(4):312-321. https://doi.org/10.1007/s41664-018-0072-6.
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Non-targeted metabolomic study of different American cranberry cultivars using UPLC-IM-HRMS
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(Peer Reviewed Journal)
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Wang, Y., Vorsa, N., Harrington, P.B., Chen, P. 2018. Non-targeted metabolomic study of different American cranberry cultivars using UPLC-IM-HRMS. Journal of Agricultural and Food Chemistry. 66:12206-12216.
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Microgreens of Brassicaceae: Genetic diversity of phytochemical concentrations and antioxidant capacities
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(Peer Reviewed Journal)
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Xiao, Z., Rausch, S.R., Luo, Y., Sun, J., Yu, L., Wang, Q., Chen, P., Yu, L., Stommel, J.R. 2018. Microgreens of Brassicaceae: Genetic diversity of phytochemical concentrations and antioxidant capacities. LWT - Food Science and Technology. 101:731-737.
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Chemical compositions of cold-pressed broccoli, carrot and cucumber seed flours, and their in vitro gut microbiota modulatory, anti-inflammatory and free radical scavenging properties
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(Peer Reviewed Journal)
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Choe, U., Li, Y., Gao, B., Yu, L., Wang, T.T., Sun, J., Chen, P., Liu, J., Yu, L. 2018. Chemical compositions of cold-pressed broccoli, carrot and cucumber seed flours, and their in vitro gut microbiota modulatory, anti-inflammatory and free radical scavenging properties. Journal of Agricultural and Food Chemistry. 66(35):9309-0317. https://doi.org/10.1021/acs.jafc.8b03343.
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Comparison of ion mobility fuzzy chromatography mass spectrometric (iFCMS) fingerprinting and FCMS fingerprinting for differentiation of American cranberry cultivars
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(Peer Reviewed Journal)
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Wang, Y., Chen, P. 2018. Comparison of ion mobility fuzzy chromatography mass spectrometric (iFCMS) fingerprinting and FCMS fingerprinting for differentiation of American cranberry cultivars. Journal of Analysis and Testing. 2(4):7388-7397.
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Effect of preharvest CaCl2 spray and postharvest UV-B radiation on storage quality of broccoli microgreens, a richer source of glucosinolates
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(Peer Reviewed Journal)
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Lu, Y., Dong, W., Yang, T., Luo, Y., Wang, Q., Chen, P. 2017. Effect of preharvest CaCl2 spray and postharvest UV-B radiation on storage quality of broccoli microgreens, a richer source of glucosinolates. Journal of Food Composition and Analysis. 67(1):55-62. https://doi.org/10.1016/j.jfca.2017.12.035.
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Challenges of developing a valid Dietary Glucosinolate database
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(Peer Reviewed Journal)
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Wu, X., Sun, J., Haytowitz, D.B., Harnly, J.M., Chen, P., Pehrsson, P.R. 2017. Challenges of developing a valid Dietary Glucosinolate database. Journal of Food Composition and Analysis. https://doi.org/10.1016/j.jfca.2017.07.014.
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Develop a Comprehensive Flavonoid Analysis Computational Tool for UHPLC-DAD- HRAM-MSn Data
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(Peer Reviewed Journal)
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Zhang, M., Sun, J., Chen, P. 2017. Develop a Comprehensive Flavonoid Analysis Computational Tool for UHPLC-DAD- HRAM-MSn Data. Analytical Chemist. 89 (4):7388-7397.
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Botanical supplements: detecting the transition from ingredients to supplements
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(Peer Reviewed Journal)
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Harnly, J.M., Lu, Y., Sun, J., Chen, P. 2017. Botanical supplements: detecting the transition from ingredients to supplements. Journal of Food Composition and Analysis. 64:85-92. https://doi.org/10.1016/j.jfca.2017.06.010.
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Dual effectiveness of ascorbic acid and ethanol combined treatment to inhibit browning and inactivate pathogens on fresh-cut apples
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(Peer Reviewed Journal)
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Yan, S., Liu, H., Yang, T., Luo, Y., Chen, P. 2017. Dual effectiveness of ascorbic acid and ethanol combined treatment to inhibit browning and inactivate pathogens on fresh-cut apples. LWT - Food Science and Technology. 80:311-320.
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Composition of phenolic compounds in wild apple with multiple resistance mechanisms against postharvest blue mold decay
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(Peer Reviewed Journal)
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Sun, J., Janisiewicz, W.J., Evans, B.E., Jurick II, W.M., Chen, P. 2017. Composition of phenolic compounds in wild apple with multiple resistance mechanisms against postharvest blue mold decay. Postharvest Biology and Technology. 127:68-75.
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Feruloyl dopamine-O-hexosides are efficient marker compounds for differentiation between Black Cohosh (Actaea racemosa) and related Actaea species – an UHPLC-HRAM-MS Chemometrics Study
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(Peer Reviewed Journal)
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Geng, P., Harnly, J.M., Sun, J., Zhang, M., Chen, P. 2017. Feruloyl dopamine-O-hexosides are efficient marker compounds for differentiation between Black Cohosh (Actaea racemosa) and related Actaea species – an UHPLC-HRAM-MS Chemometrics Study. Analytical and Bioanalytical Chemistry. 127:68-75. https://doi.org/10.1016/j.postharvbio.2017.01.006.
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Comprehensive characterization of C-glycosyl flavones in wheat (Triticum aestivum L.) germ using UPLC-PDA-ESI/HRMSn and mass defect filtering
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(Peer Reviewed Journal)
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Geng, P., Sun, J., Zhang, M., Li, X., Harnly, J.M., Chen, P. 2016. Comprehensive characterization of C-glycosyl flavones in wheat (Triticum aestivum L.) germ using UPLC-PDA-ESI/HRMSn and mass defect filtering. Journal of Mass Spectrometry. 64:4407-4415.
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GLS-Finder: An Automated Data-Mining System for Fast Profiling Glucosinolates and its Application in Brassica Vegetables
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(Peer Reviewed Journal)
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Sun, J., Zhang, M., Chen, P. 2016. GLS-Finder: An Automated Data-Mining System for Fast Profiling Glucosinolates and its Application in Brassica Vegetables. Analytical Chemistry. 4407:4415.
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Differentiation of Bread Made with Whole Grain and Refined Wheat (T. aestivum) Flour Using LC/MS-based chromatographic Fingerprinting and Chemometric Approaches
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(Peer Reviewed Journal)
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Geng, P., Harnly, J.M., Chen, P. 2016. Differentiation of Bread Made with Whole Grain and Refined Wheat (T. aestivum) Flour Using LC/MS-based chromatographic Fingerprinting and Chemometric Approaches. Journal of Food Composition and Analysis. 47:92-100.
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Differentiation of the two major species of Echinacea (E. augustifolia and E. purpurea) using a flow injection mass spectrometric (FIMS) fingerprinting method and chemometric analysis
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(Peer Reviewed Journal)
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Lu, Y., Chen, P. 2015. Differentiation of the two major species of Echinacea (E. augustifolia and E. purpurea) using a flow injection mass spectrometric (FIMS) fingerprinting method and chemometric analysis. Analytical Methods. 4:246-251.
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Myrosinase-dependent and –independent formation and control of isothiocyanate products of glucosinolate hydrolysis
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(Peer Reviewed Journal)
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Angelino, D., Dosz,.B., Sun, J., Hoeflinger, J.L., Van Tassell, M.L., Chen, P., Harnly, J.M., Miller, M.J., Jeffery, E.H. 2015. Myrosinase-dependent and –independent formation and control of isothiocyanate products of glucosinolate hydrolysis. Frontiers in Plant Science. doi: 10.3389/fpls.2015.00831.
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FlavonQ: An Automated Data Processing Tool for Profiling Flavone/flavonol Glycosides Using Ultra High-performance Liquid Chromatography Diode Array Detection and High-Resolution Accurate-Mass Mass Spectrometry (UHPLC HRAM-MS)
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(Peer Reviewed Journal)
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Zhang, M., Sun, J., Chen, P. 2015. FlavonQ: An Automated Data Processing Tool for Profiling Flavone/flavonol Glycosides Using Ultra High-performance Liquid Chromatography Diode Array Detection and High-Resolution Accurate-Mass Mass Spectrometry (UHPLC HRAM-MS). Analytical Chemist. 87:9974-9981.
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Comparison of Flow Injection MS, NMR, and DNA Sequencing: Methods for Identification and Authentication of Black Cohosh (Actaea racemosa)
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(Peer Reviewed Journal)
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Harnly, J.M., Chen, P., Sun, J., Huang, H., Colson, K., Yu, J., Mccoy, J.H., Harbaugh Reynaud, D.T., Harrington, P.B., Fletcher, E. 2015. Comparison of Flow Injection MS, NMR, and DNA Sequencing: Methods for Identification and Authentication of Black Cohosh (Actaea racemosa). Planta Medica. 82:250-262.
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Differentiation of whole grain and refined wheat (T. aestivum) flour using a fuzzy mass spectrometric fingerprinting and chemometric approaches
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(Peer Reviewed Journal)
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Geng, P., Harnly, J.M., Chen, P., Luthria, D.L., Zhang, M. 2015. Differentiation of whole grain and refined wheat (T. aestivum) flour using a fuzzy mass spectrometric fingerprinting and chemometric approaches. Journal of Agricultural and Food Chemistry. 407:7875-7888.
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AOAC SMPR 2014.007: Authentication of selected Vaccinium species (Anthocyanins) in dietary ingredients and dietary supplements
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(Peer Reviewed Journal)
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Krueger, D., Arora, S., Bzhelyansky, A., Chen, P., Chlenov, A., Collison, M., Durst, R., Es-Safi, N., Giancaspro, G., Hall, G., Hammerstone, J., Ingle, P., Jennens-Clough, M., Ji, D., Ji, J., Kennedy, D., Lawson, T., Lee, J., Lock, S., Mudge, E., Neal-Kababick, J., Phillips, M., Phillips, T., Rejaei, A., Rettinger, M., Rimmer, C., R.-Haralambides, A., Royce, S., Schaneberg, B., Solyom, A., Stern, N., Sullivan, D., Szpylka, J., Wise, M.L., Yan, X., Yoo, S., Yu, K., Zhang, Y., Coates, S. 2015. AOAC SMPR 2014.007: Authentication of selected Vaccinium species (Anthocyanins) in dietary ingredients and dietary supplements. Journal of AOAC International. 98(4):1052-1054. https://doi.org/10.5740/jaoac.int.SMPR2014.007.
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Differentiation of whole grain from refined wheat (T. aestivum) flour using lipid profile of wheat bran, germ, and endosperm with UHPLC-HRAM mass spectrometry”
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(Peer Reviewed Journal)
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Geng, P., Harnly, J.M., Chen, P. 2015. Differentiation of whole grain from refined wheat (T. aestivum) flour using lipid profile of wheat bran, germ, and endosperm with UHPLC-HRAM mass spectrometry”. Journal of Agricultural and Food Chemistry. 63:6189-6211.
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Fingerprinting profile of polysaccharides from Lycium barbarum using multiplex approaches and chemometrics
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(Peer Reviewed Journal)
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Lu, W., Xu, J., Zhu, R., Zhu, Y., Zhao, Y., Chen, P., Pan, C., Yao, W., Gao, X. 2015. Fingerprinting profile of polysaccharides from Lycium barbarum using multiplex approaches and chemometrics. International Journal of Biological Macromolecules. 3:78:230-237.
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Discrimination of Aurantii Fructus Immaturus and Fructus Poniciri Trifoliatae Immaturus by Flow Injection UV Spectroscopy (FIUV) and 1H NMR using Partial Least-squares Discriminant Analysis (PLS-DA)
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(Peer Reviewed Journal)
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Zahang, M., Zhang, Y., Harrington, P.B., Chen, P. 2015. Discrimination of Aurantii Fructus Immaturus and Fructus Poniciri Trifoliatae Immaturus by Flow Injection UV Spectroscopy (FIUV) and 1H NMR using Partial Least-squares Discriminant Analysis (PLS-DA). Analytical Letters. 49:711-722.
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Metabolomic assessment reveals a stimulatory effect of calcium treatment on glucosinolates contents in broccoli microgreen
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(Peer Reviewed Journal)
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Sun, J., Kou, L., Geng, P., Huang, H., Yang, T., Luo, Y., Chen, P. 2015. Metabolomic assessment reveals a stimulatory effect of calcium treatment on glucosinolates contents in broccoli microgreen. Journal of Agricultural and Food Chemistry. 8:63(6):1863-1868.
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Characterization of phenolic amides from cortex lycii by ultra high-performance liquid chromatography coupled with LTQ-Orbitrap mass spectrometry
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(Peer Reviewed Journal)
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Zhang, J., Guan, S., Sun, J., Liu, T., Chen, P., Feng, R., Chen, X., Hou, J., Yang, W., Wu, W., Yang, M., Guo, D. 2014. Characterization of phenolic amides from cortex lycii by ultra high-performance liquid chromatography coupled with LTQ-Orbitrap mass spectrometry. Journal of Pharmaceutical and Biomedical Analysis. 407:581-95.
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High fat diet leads to changes in metabolite patterns in pig plasma, fecal, and urine samples detected by a ultra-high performance liquid chromatography tandem with high resolution mass spectrometry metabolomic study
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(Peer Reviewed Journal)
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Sun, J., Monagas, M., Jang, S., Molokin, A., Harnly, J.M., Urban, J.F., Aguilar, G., Chen, P. 2014. High fat diet leads to changes in metabolite patterns in pig plasma, fecal, and urine samples detected by a ultra-high performance liquid chromatography tandem with high resolution mass spectrometry metabolomic study. Food Chemistry. 15:173:171-178.
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Profiling of Glucosinolates and Flavonoids in Rorippa indica (Linn.) Hiern. (Cruciferae) by UHPLC-PDA-ESI/HRMSn.
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(Peer Reviewed Journal)
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Lin, L., Sun, J., Chen, P., Zhang, R., Fan, X., Li, L., Harnly, J.M. 2014. UHPLC-DAD-ESI/HRMSn method to identify the glucosinolates and flavonoids of Rorippa montana (Wall) Small.. Journal of Agricultural and Food Chemistry. 62:6118-6129.
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Natural products with health benefits from marine biological resources
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(Peer Reviewed Journal)
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Zhao, Y., Chen, P. 2014. Natural products with health benefits from marine biological resources. Current Organic Chemistry. 10.2174/138527281807140515132853.
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Recent advances in ultra-high performance liquid chromatography for the analysis of traditional chinese medicine
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(Peer Reviewed Journal)
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Huang, J., Liu, M., Chen, P. 2014. Recent advances in ultra-high performance liquid chromatography for the analysis of traditional chinese medicine. Analytical Letters. DOI: 10.1080/00032719.2014.888727.
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Differentiation of the four major types (C. Burmannii, C. Verum, C. cassia, And C. Loureiroi) of cinnamons using a flow-injection mass spectrometric (FIMS) fingerprinting method
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(Peer Reviewed Journal)
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Chen, P., Sun, J., Ford, P. 2014. Differentiation of the four major types (C. Burmannii, C. Verum, C. cassia, And C. Loureiroi) of cinnamons using a flow-injection mass spectrometric (FIMS) fingerprinting method. Analytical and Bioanalytical Chemistry. 10.1021/jf405580c.
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Anthocyanidins and polyphenols in five brassica species microgreens: analysis by UHPLC-PDA-ESI/HRMS/MSn
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(Peer Reviewed Journal)
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Sun, J., Xiao, Z., Lin, L., Lester, G.E., Wang, Q., Harnly, J.M., Chen, P. 2013. Anthocyanidins and polyphenols in five brassica species microgreens: analysis by UHPLC-PDA-ESI/HRMS/MSn. Journal of Agricultural and Food Chemistry. 61:10960-10970.
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Single laboratory validation of the determination of yohimbine in yohimbe bark and related dietary supplements using UHPLC/UV/MS
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(Peer Reviewed Journal)
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Chen, P., Bryden, N.A. 2015. Single laboratory validation of the determination of yohimbine in yohimbe bark and related dietary supplements using UHPLC/UV/MS. Journal of Association of Official Analytical Chemists International. 98:896-901.
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Differentiation of leaf and whole-plant samples of di- and tetraploid Gynostemma pentaphyllum (Thunb.) Makino using flow-injection mass spectrometric(FIMS) fingerprinting method combined with chemometric approaches
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(Peer Reviewed Journal)
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Zhao, Y., Niu, Y., Xie, Z., Shi, H., Chen, P., Yu, L. 2013. Differentiation of leaf and whole-plant samples of di- and tetraploid Gynostemma pentaphyllum (Thunb.) Makino using flow-injection mass spectrometric(FIMS) fingerprinting method combined with chemometric approaches. Analytica Chimica Acta. 5:1288-1297.
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Detection of adulterated Ginkgo biloba supplements using chromatographic and spectral fingerprints
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(Peer Reviewed Journal)
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Harnly, J.M., Luthria, D.L., Chen, P. 2012. Detection of adulterated Ginkgo biloba supplements using chromatographic and spectral fingerprints. Journal of Association of Official Analytical Chemists International. 95:6.
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Differentiation of leaf and whole-plant samples of di- and tetraploid Gynostemma pentaphyllum (Thunb.) Makino using flow-injection mass spectrometric(FIMS) fingerprinting method combined with chemometric approaches
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(Peer Reviewed Journal)
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Differentiating organic and conventional sage by chromatographic and mass spectrometry flow-injection fingerprints
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(Peer Reviewed Journal)
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Gao, B., Lu, Y., Chen, P., Liangli, Y. 2013. Differentiating Organic and Conventional Sage by Chromatographic and Mass Spectrometry Flow-Injection Fingerprints. Journal of Agricultural and Food Chemistry. 61:2957-2963.
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Authentication of organically and conventionally grown basils by gas chromatograpy/mass spectrometry chemical profiles
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(Peer Reviewed Journal)
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Wang, Z., Chen, P., Yu, L., Harrington, P.B. 2013. Authentication of organically and conventionally grown basils by gas chromatograpy/mass spectrometry chemical profiles. Analytical Chemistry. 85:2945-2953.
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Profiling polyphenols of two diploid strawberry (Fragaria vesca) inbred lines using UHPLC-HRMSn
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(Peer Reviewed Journal)
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Sun, J., Liu, X., Yang, T., Solvin, J., Chen, P. 2013. Profiling polyphenols of two diploid strawberry (Fragaria vesca) inbred lines using UHPLC-HRMSn. Analytical Biochemistry. 5:2945-53.
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Encapsulation of indole-3-carbinol and 3'3'-diindolylmethane in zein/carboxymethyl chitosan nanoparticles with controlled release property and improved stability
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(Peer Reviewed Journal)
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Lou, Y., Wang, T.T., Teng, Z., Chen, P., Sun, J., Wang, Q. 2013. Encapsulation of indole-3-carbinol and 3'3'-diindolylmethane in zein/carboxymethyl chitosan nanoparticles with controlled release property and improved stability. Food Chemistry. 139(1-4):224-30.
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Chromatographic and mass spectrometric fingerprinting analyses of
angelica sinensis (Oliv.) diels dietary supplements
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(Peer Reviewed Journal)
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Zhao, Y., Sun, J., Yu, L., Chen, P. 2013. Chromatographic and mass spectrometric fingerprinting analyses of angelica sinensis (Oliv.) diels dietary supplements. Analytical and Bioanalytical Chemistry. doi: 10.1007/s00216-012-6668-1.
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Differentiating organic from conventional peppermints using chromatographic and flow-injection mass spectrometric (FIMS) fingerprints
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(Peer Reviewed Journal)
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Gao, B., Qin, F., Chen, P., Shi, H., Liangli, L. 2012. Differentiating organic from conventional peppermints using chromatographic and flow-injection mass spectrometric (FIMS) fingerprints. Journal of Agricultural and Food Chemistry. 60:11987-11994.
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UHPLC/HRMS analysis of African mango (Irvingia gabonensis) seeds, seed extracts, and African mango based dietary supplements
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(Peer Reviewed Journal)
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Sun, J., Chen, P. 2012. UHPLC/HRMS analysis of African mango (Irvingia gabonensis) seeds, seed extracts, and African mango based dietary supplements. Journal of Agricultural and Food Chemistry. 60:8703-8709.
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Classification of cultivation locations of panax quinquefolius L samples using high performance liquid chromatography-electrospray ionization mass spectrometry and chemometric analysis
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(Peer Reviewed Journal)
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Sun, X., Chen, P., Cook, S., Jackson, G., Harnly, J.M., Harrington, P. 2012. Classification of cultivation locations of panax quinquefolius L samples using high performance liquid chromatography-electrospray ionization mass spectrometry and chemometric analysis. Analytical Chemist. 84:3628-3634.
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Classification of cultivation locations of Panax quinquefolius L samples using high performance liquid chromatography-electrospray ionization mass spectrometry and chemometric analysis
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(Peer Reviewed Journal)
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Sun,, X., Chen, P., Cook, S., Jackson, G., Harnly, J.M., Harrington, P. 2013. Classification of cultivation locations of Panax quinquefolius L samples using high performance liquid chromatography-electrospray ionization mass spectrometry and chemometric analysis. Analytical Chemistry. 84:3628-3634.
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Recent applications for HPLC-MS analysis of anthocyanins in Food materials
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(Peer Reviewed Journal)
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Sun, J., Long-Ze, L., Chen, P. 2013. Recent applications for HPLC-MS analysis of anthocyanins in Food materials. Current Analytical Chemistry. 9:397-416.
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Study of the mass spectrometric behaviors of anthocyanins in negative ionization mode and its applications for characterization of anthocyanins and non-anthocyanin polyphenols
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(Peer Reviewed Journal)
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Sun, J., Lin, L., Chen, P. 2012. Study of the mass spectroscopic behaviors of anthocyanins in negative ionization mode and its applications for fast differentiation of anthocyanins and non-anthocyanin polyphenols in natural products. Rapid Communications in Mass Spectrometry. 26:-1123-1132.
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UHPLC-PDA-ESI/HRMS/MSn analysis of anthocyanins, flavonol glycosides, and hydroxycinnamic acid derivatives in red mustard green (Brassica juncea (L) Coss variety)
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(Peer Reviewed Journal)
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Lin, L., Sun, J., Chen, P., Harnly, J.M. 2011. UHPLC-PDA-ESI/HRMS/MSn analysis of anthocyanins, flavonol glycosides, and hydroxycinnamic acid derivatives in red mustard green (Brassica juncea (L) Coss variety). Journal of Agricultural and Food Chemistry. 60:544-553.
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Chemical composition, and anti-proliferative and anti-inflammatory effects of the leaf and wholeplant samples of diploid and tetraploid gynostemma pentaphyllum
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(Peer Reviewed Journal)
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Xie, Z., Huang, H., Zhao, Y., Shi,, H., Wang, S., Wang, T.T., Chen, P., Yu, L. 2011. Chemical composition, and anti-proliferative and anti-inflammatory effects of the leaf and wholeplant samples of diploid and tetraploid gynostemma pentaphyllum. Food Chemistry. 132:125-133.
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High-performance Liquid Chromatography Mass Spectrometry Analysis of Pantothenic acid (Vitamin B5) in Multivitamin Dietary Supplements
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(Abstract Only)
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A flow-injection mass spectrometry fingerprinting method
for authentication and quality assessment of Scutellaria
lateriflora-based dietary supplements
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(Peer Reviewed Journal)
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Sun, J., Chen, P. 2011. A flow-injection mass spectrometry fingerprinting method for authentication and quality assessment of Scutellaria lateriflora-based dietary supplements. Analytical and Bioanalytical Chemistry. 401:1577-1584.
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A flow-injection mass spectrometry fingerprinting method for authentication and quality assessment of Scutellaria lateriflora-based dietary supplements
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(Peer Reviewed Journal)
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Sun, J., Long-Ze, L., Chen, P. 2011. A flow-injection mass spectrometry fingerprinting method for authentication and quality assessment of Scutellaria lateriflora-based dietary supplements. Analytical and Bioanalytical Chemistry. 401:1577-1584.
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Profiling the indole alkaloids in yohimbe bark with ultra-performance liquid chromatography coupled with ion mobility quadrupole time-of-flight mass spectrometry
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(Peer Reviewed Journal)
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Sun, J., Chen, P. 2011. Profiling the indole alkaloids in yohimbe bark with ultra-performance liquid chromatography coupled with ion mobility quadrupole time-of-flight mass spectrometry. Journal of Rapid Communications in Mass Spectroscopy. 25:2591-2602.
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LC-PDA-EIS/MSn identification of new anthocyanins in purple radish (Raphanus sativus L. variety)
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(Peer Reviewed Journal)
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Lin, L., Jianghao, S., Chen, P., Harnly, J.M. 2011. LC-PDA-EIS/MSn identification of new anthocyanins in purple radish (Raphanus sativus L. variety). Journal of Agricultural food Chemistry . 59:6616-6627.
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Differentiation of Panax quinquefolius grown in United States and China using LC/MS-based chromatographic fingerprinting and metabolomic approaches
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(Peer Reviewed Journal)
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Sun, J., Chen, P. 2011. Differentiation of Panax quinquefolius grown in United States and China using LC/MS-based chromatographic fingerprinting and metabolomic approaches. Analytical Biochemistry. 58(8):4545-4553.
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Identification, quantitation, and comprehensive assessment of green, white, and pu-erh teas using UPLC/UV/MS
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(Peer Reviewed Journal)
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Zhao, Y., Chen, P., Lin, L., Harnly, J.M. 2011. Identification, quantitation, and comprehensive assessment of green, white, and pu-erh teas using UPLC/UV/MS. Food Chemistry. 126:1269-1277.
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Discrimination among Panax species using spectral fingerprinting
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(Peer Reviewed Journal)
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Chen, P., Luthria, D.L., Harrington, P.B., Harnly, J.M. 2011. Discrimination among Panax species using spectral fingerprinting. Journal of the Association of Official Analytical Chemists. 94:1411-1421.
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Chromatographic fingerprint analysis and rutin and quercetin compositions in the leaf and whole-plant samples of di- and tetraploid Gynostemma pentaphyllum
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(Peer Reviewed Journal)
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Xie, Z., Zhao, Y., Chen, P., Yu, L. 2010. Chromatographic fingerprint analysis and rutin and quercetin compositions in the leaf and whole-plant samples of di- and tetraploid Gynostemma pentaphyllum. Journal of Agricultural and Food Chemistry. 7:3042-3049.
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A non-targeted approach to chemical discrimination between green tea extract-based dietary supplements and green tea leaves by LC/MS
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(Peer Reviewed Journal)
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Sun, J., Chen, P., Lin, L., Harnly, J.M. 2011. A non-targeted approach to chemical discrimination between green tea extract-based dietary supplements and green tea leaves by LC/MS. Journal of the Association of Official Analytical Chemists. 94:487-497.
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Rapid Mass Spectroscopic Fingerprinting Method and Principal Component Analysis for Differentiation between American Ginseng, Chinese Ginseng, and Notoginseng
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(Peer Reviewed Journal)
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Chen, P., Harnly, J.M. 2011. Rapid Mass Spectroscopic Fingerprinting Method and Principal Component Analysis for Differentiation between American Ginseng, Chinese Ginseng, and Notoginseng. Journal of the Association of Official Analytical Chemists. 94:90-99.
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A LC/UV/Vis method for determination of cyanocobalamin in multivitamin dietary supplements with on-line sample clean-up
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(Peer Reviewed Journal)
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Chen, P., Wolf, W.R., Castanheira, I., Sanches-Silva, A. 2010. A LC/UV/Vis method for determination of cyanocobalamin in multivitamin dietary supplements with on-line sample clean-up. Analytical Methods. 2:1171-1175.
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Flow injection mass spectral fingerprints demonstrate chemical differences in rio red grapefruit with respect to year, harvest time, and conventional versus organic farming
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(Peer Reviewed Journal)
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Chen, P., Harnly, J.M., Lester, G.E. 2010. Flow injection mass spectral fingerprints demonstrate chemical differences in Rio Red grapefruit with respect to year, harvest time, and conventional versus organic farming. Journal of Agriculture and Food Chemistry. 58(8):4545-4553.
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Mass spectroscopic fingerprinting method for to differentiation between Scutellaria lateriflora and the Germander (Teucrium canadens and T. chamaedrys species
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(Peer Reviewed Journal)
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Chen, P., Lin, L., Harnly, J.M. 2010. Mass spectroscopic fingerprinting method for differentiation between Scutellaria lateriflora and the Germander (Teucrium canadense and T. chamaedrys) species. Journal of AOAC International. 93(4):1148-1154.
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Certificate of Analysis, Standard Reference Material® 1849, Infant/Adult Nutritional Formula
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Wolf, W.R., Byrdwell, W.C., Chen, P., Goldschmidt, R.J., Atkinson, R.L. 2009. Certificate of Analysis, Standard Reference Material® 1849, Infant/Adult Nutritional Formula. Available NIST Website: https://www-s.nist.gov/srmors/view_detail.cfm?srm=1849.
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Single Lab Validation of a LC/UV/FLD/MS Method for Simultaneous Determination of Water-soluble Vitamins in Multi-Vitamin Dietary Supplements
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(Peer Reviewed Journal)
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Chen, P., Atkinson, R.L., Wolf, W.R. 2009. Single lab validation of a LC/UV/FLD/MS method for simultaneous determination of water-soluble vitamins in multi-vitamin dietary supplements. Journal of the Association of Official Analytical Chemists. 92(2):680-688.
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Chromatographic fingerprint analysis of Pycnogenol® dietary supplements
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(Peer Reviewed Journal)
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Chen, P., Song, F., Lin, L. 2009. Chromatographic fingerprint analysis of Pycnogenol® dietary supplements. Journal of AOAC International. 92(2):624-632.
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Chromatographic profiles of Ginkgo biloba leaves and selected products
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(Peer Reviewed Journal)
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Lin, L., Chen, P., Ozcan, M., Harnly, J.M. 2008. Chromatographic profiles of Ginkgo biloba leaves and selected products. Journal of Agricultural and Food Chemistry. http://dx.doi.org/10.1021/jf800488x.
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Factors Affecting Resveratrol Content in Strawberries
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(Abstract Only)
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Wang, S.Y., Chen, C., Wang, C.Y., Chen, P. 2008. Factors Affecting Resveratrol Content in Strawberries. HortScience. 43(4):1230.2008
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Fingerprint of Herb Product by Matrix-assisted Laser Desorption Ionization Mass Spectrometry
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(Abstract Only)
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Song, F., Chen, P. 2008. Fingerprint of Herb Product by Matrix-assisted Laser Desorption Ionization Mass Spectrometry. 2008 BARC Poster Day, April 23, 2008, Beltsville, MD.
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Simultaneous Determination of Water Soluble Vitamins in Dietary Supplements and Fortified Foods by LC-MS
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(Abstract Only)
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Wolf, W.R., Goldschmidt, R.J., Chen, P. 2008. Simultaneous Determination of Water Soluble Vitamins in Dietary Supplements and Fortified Foods by LC-MS.Midwest Section of AOAC International, 2008 Annual Meeting, June 9-11 2008, Bozeman, MT.
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Elucidation of the mechanism of enzymatic browning inhibition by sodium chlorite
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(Peer Reviewed Journal)
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He, Q., Luo, Y., Chen, P. 2008. Elucidation of the mechanism of enzymatic browning inhibition by sodium chlorite. Journal of Food Chemistry. 110(4):847-851.
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Spectral Fingerprints for Authentication and Identification of Variation in Foods and Botanical Materials
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(Abstract Only)
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Harnly, J.M., Luthria, D.L., Chen, P., Lin, L. 2008. Spectral Fingerprints for Authentication and Identification of Variation in Foods and Botanical Materials. Experimental Biololgy Meeting, April 5-9, 2008, San Diego, CA.
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Chromatographic Profiles of Ginkgo biloba Leaves and Selected Products
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(Abstract Only)
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Lin, L., Chen, P., Ozcan, M., Harnly, J.M. 2008. Chromatographic Profiles of Ginkgo biloba Leaves and Selected Products. Experimental Biololgy Meeting, April 5-9, 2008, San Diego, CA.
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Resveratrol Content in Strawberry Fruit is Affected by Preharvest Conditions
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(Peer Reviewed Journal)
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Wang, S.Y., Chen, C., Wang, C.Y., Chen, P. 2007. Resveratrol Content in Strawberry Fruit is Affected by Preharvest Conditions. Journal of Agriculture and Food Chemistry. 55:8269-8274.
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Simultaneous Determination of Selected B Vitamins in the NIST SRM 3280 Multivitamin/Multielement Tablets by Liquid Chromatography Isotope Dilution Mass Spectrometry
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(Peer Reviewed Journal)
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Chen, P., Ozcan, M., Wolf, W.R. 2007. Simultaneous determination of selected B vitamins in the NIST SRM 3280 multivitamin/multielement tablets by liquid chromatography isotope dilution mass spectrometry. Analytical and Bioanalytical Chemistry. Available: doi:10.1007/s00216-007-1430-9.
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Single Laboratory Validation of a LC/UV/MS Method for Determination of Multiple Water Soluble Vitamins in Dietary Supplements (AOAC Annual Meeting, Minneapolis, MN, Sept, 2006)
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(Abstract Only)
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Chen, P., Wolf, W.R. 2007. Single Laboratory Validation of a LC/UV/MS Method for Determination of Multiple Water Soluble Vitamins in Dietary Supplements. AOAC Annual Meeting, September 15, 2006, Minneapolis, Minnesota.
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Chromatographic fingerprints analysis for evaluation of Ginkgo Biloba products
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(Peer Reviewed Journal)
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Chen, P., Ozcan, M., Harnly, J.M. 2007. Chromatographic Fingerprints Analysis for Evaluation of Ginkgo Biloba Products. Analytical and Bioanalytical Chemistry. Available on-line doi: 10.1007/s00216-007-1386-9.
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Simultaneous Determination of Selected B Vitamins in the NIST SRM 3280 Multivitamin/Multielement Tablets by HPLC Isotope Dilution Mass Spectrometry
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(Abstract Only)
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Chen, P., Ozcan, M., Wolf, W.R. 2007. Simultaneous Determination of Selected B Vitamins in the NIST SRM 3280 Multivitamin/Multielement Tablets by HPLC Isotope Dilution Mass Spectrometry. BARC Poster Day, May, 2007, Beltsville, Maryland.
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Validation of a LC/UV/MS Method for Determination of Multiple Water Soluble Vitamins in Dietary Supplements (Experimental Biology, April, 2007, Washington, D.C.)
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(Abstract Only)
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Wolf, W.R., Chen, P. 2007. Validation of a LC/UV/MS Method for Determination of Multiple Water Soluble Vitamins in Dietary Supplements. Experimental Biology, April 25, 2007, Washington, D.C.
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Determination of Selected B-complex Vitamins in the NIST Multivitamin Reference Standard Material by Stable Isotope Dilution Mass Spectrometry (Experimental Biology, April, 2007, Washington, D.C.)
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(Abstract Only)
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Chen, P., Ozcan, M., Wolf, W.R. 2007. Determination of Selected B-complex Vitamins in the NIST Multivitamin Reference Standard Material by Stable Isotope Dilution Mass Spectrometry. Experimental Biology, April 25, 2007, Washington, D.C.
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Determination of Ginkgolides and Flavonols in Ginkgo Biloba Products and NIST Ginkgo Reference Standard by LC/UV/MS (Experimental Biology, April, 2007, Washington, D.C.)
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(Abstract Only)
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Ozcan, M., Chen, P. 2007. Determination of Ginkgolides and Flavonols in Ginkgo Biloba Products and NIST Ginkgo Reference Standard by LC/UV/MS. Experimental Biology, April 25, 2007, Washington, D.C.
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Synthesis of safflomide and its HPLC measurement in mouse plasma after oral administration
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(Peer Reviewed Journal)
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Park, J.B., Chen, P. 2007. Synthesis of safflomide and its HPLC measurement in mouse plasma after oral administration. Journal of Chromatography B: Biomedical Applications. 852(1-2):398-402.
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Comparison of the Terpene Lactones and Flavonols Contents in Ginkgo Biloba Commercial Samples and the NIST Standard Reference Materials Using LC/UV/MS
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(Peer Reviewed Journal)
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Ozcan, M., McAuley, B., and Chen, P. 2007. Comparison of the Terpene Lactones and Flavonols Contents in Ginkgo Biloba Commercial Samples and the NIST Standard Reference Materials Using LC/UV/MS. Journal of Food and Drug Analysis. 15(1):55-62
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LC/UV/MS-MRM for the simultaneous determination of water-soluble vitamins in multi-vitamin dietary supplements
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(Peer Reviewed Journal)
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Chen, P., Wolf, W.R. 2006. LC/UV/MS-MRM for the simultaneous determination of water-soluble vitamins in multi-vitamin dietary supplements. Analytical and Bioanalytical Chemistry, 387(7):2441-2448.
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Development and Validation of a High-Throughput Based on Liquid Chromatography with UV/MS Detection Method for Quantitation of Cichoric Acid in Echinacea purpurea Aerial-Based Dietary Supplements
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(Peer Reviewed Journal)
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Chen, P., Wolf, W.R. 2006. Development and Validation of a High-Throughput Based on Liquid Chromatography with UV/MS Detection Method for Quantitation of Cichoric Acid in Echinacea purpurea Aerial-Based Dietary Supplements. Journal of Association of Official Analytical Chemists International. 89:(3)612-618.
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DEVELOPMENT OF AN EFFICIENT, SCALABLE, ALDOLASE-CATALYZED PROCESS FOR ENANTIOSELECTIVE SYNTHESIS OF STATIN INTERMEDIATES
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(Proceedings)
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Greenberg, W.A., Varvak, A., Hanson, S.R., Wong, K., Huang, H., Chen, P., Burk, M.J. 2004. Development of an efficient, scalable, aldolase-catalyzed process for enantioselective synthesis of statin intermediates. #89158. 101(16):5788-5793.
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CREATION OF A PRODUCTIVE, HIGHLY ENANTIOSELECTIVE NITRILASE THROUGH GENE SITE SATURATION MUTAGENESIS (GSSM)
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(Proceedings)
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Greenberg, W.A., Varvak, A., Hanson, S.R., Wong, K., Huang, H., Chen, P., Burk, M.J. 2004. Creation of a productive, highly enantioselective nitrilase through gene site saturation mutagenesis (GSSM). Proceedings of the National Academy of Sciences. 101(16):5788-5793.
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ARS News Articles
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