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United States Department of Agriculture

Agricultural Research Service

Research Project: VALUABLE POLYSACCHARIDE-BASED PRODUCTS FROM SUGAR BEET PULP AND CITRUS PEEL
2007 Annual Report


1a.Objectives (from AD-416)
The overall objective is to create more demand for the processing residues from sugar beets and citrus fruits by developing new valuable products and processes for their efficient and sustainable conversion into high quality food and non-food products.


1b.Approach (from AD-416)
(1)Prepare and evaluate new enzyme systems as tools to better understand and manipulate plant cell wall polysaccharide structure and function..
2)Extract by chemical and/or enzymatic means, isolate and characterize cell wall polysaccharides to determine molecular structure and physical properties in by-products of sugar beet and citrus processing for potential value added products..
3)Design new, value-added personal care, biomedical and industrial products from cell wall polysaccharides in by-products of sugar beet and citrus processing..
4)Develop novel, value added biodegradable engineering materials by utilizing state-of-the-art extrusion processing..
5)Produce new prebiotic functional food and animal feed ingredients from citrus and sugar beet processing by-products.


3.Progress Report
This report serves to document research conducted between ARS and ISTO Technologies (St. Louis, MO) under CRADA #58-3K95-4-1042, Preparation of Composite Scaffolds from Pectin and Poly(lactide-co-glycolide). Additional information can be found in the Annual Report from the subordinate project 1935-41000-068-01T. Three batches of samples were sent (pectin derived porous matrix and pectin derived films) to ISTO for in vitro and in vivo evaluations. The research results were presented at the 2007 American Plastic Surgery Annual Meeting. The presentation has attracted much interest from plastic surgeons and biotech companies. The CRADA was extended to the end of 2007 in order for the both sides to better analyze and understand the results from the in vivo study. Research progress was monitored by telephone calls and e-mail. This research supports the ARS National Program 306, Quality and Utilization of Agricultural Products Action Plan Component 2, New Processes, New Uses and Value-Added Foods and Biobased Products.

This report serves to document research conducted between ARS and CP-Kelco under CRADA #58-3K95-6-1136, Evaluation of Citrus Protein Useful for Improving Commercial Properties of Pectin. Additional information can be found in the Annual Report from subordinate project 1935-41000-068-02T. A patent application will be submitted based on the characterization of a Florida citrus peel enzyme that modifies the structure and functional properties of pectin. The CRADA was changed to non-funded status and research activities shifted to Winter Haven, FL. Research progress was monitored by telephone calls and e-mail. This research supports the ARS National Program 306, Quality and Utilization of Agricultural Products Action Plan Component 2, New Processes, New Uses and Value-Added Foods and Biobased Products.


4.Accomplishments
New biobased packaging materials. New uses for biobased products are needed to better utilize abundant crop processing residues and reduce our dependence on foreign petroleum. Antimicrobial and edible packaging materials were developed from crop processing residues. Pectin/polylactic acid films possess the mechanical properties similar to those of petroleum-derived thermoplastics, plus they can absorb antimicrobial agents and control their release, serving as an active barrier for the inhibition of bacterial migration and growth. Pectin/protein edible films provide a barrier to moisture, lipids, and aromas, and can be used to alter or retain the food texture, based on the ratio of pectin and other film components. These new packaging materials are green biobased products that can replace petroleum-based products. This research supports the ARS National Program 306, Quality and Utilization of Agricultural Products Action Plan Component 2, New Processes, New Uses and Value-Added Foods and Biobased Products.


5.Significant Activities that Support Special Target Populations
None


6.Technology Transfer

Number of active CRADAs and MTAs2
Number of non-peer reviewed presentations and proceedings15
Number of newspaper articles and other presentations for non-science audiences2

Review Publications
Eliaz, I.,Hotchkiss, A.T., Fishman, M.L. and Rode, D . 2006. The effect of modified citrus pectin on the urinary excretion of toxic elements. Phytotherapy Research.20:859-864.

Liu, L.S., Liu, C., Fishman, M., Hicks, K.B. 2007. Composite films from pectin and fish skin gelatin or soybean flour protein. Journal of Agriculture and Food Chemistry 55(6),p.2349-2355.

Liu, L.S., Fishman, M.L., Hicks, K.B. 2007. Pectin in controlled drug delivery. Cellulose 14:15-24.

Finkenstadt, V.L., Liu, L.S., Willett, J.L. 2006. Preparation of poly(lactic acid) and sugar beet pulp green composites. Polymers and the Environment. 15(1):1-6.

Last Modified: 4/19/2014
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