Submitted to: Proceedings of Florida State Horticultural Society
Publication Type: Abstract Only
Publication Acceptance Date: March 3, 2005
Publication Date: N/A
Technical Abstract: Data from Fourier transform infrared spectroscopy (FT-IR) using a horizontal attenuated total reflectance (H-ATR) adapter are compared to various instrumental and chemical methods for differentiating commercial orange juices using multivariate statistics. Statistical models were generated using the data from an electronic nose, a head space gas chromatograph, mass spectrometer based chemical sensor, and results of standard chemical tests. The separation was similar to that obtained from the other methods, but has the disadvantage of the statistics being more time consuming due to the large number of variables. Seven not-from-concentrate and 3 from-concentrate orange juices were analyzed with adequate separation using the data from the FTIR. This technique compares favorably with the other methods examined in previous years.