Progress 09/28/06 to 09/30/08
Outputs
Progress Report Objectives (from AD-416) Optimization of sample preparation procedures for extraction of phenolic compounds from different food and plant matrices. Approach (from AD-416) Samples will be extracted by different procedures such as stirring, sonication, shaking, and accelerated solvent extractor. Significant Activities that Support Special Target Populations This project was only kept open for closeout, no research was conducted this year. The closeout has been completed.
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Progress 10/01/06 to 09/30/07
Outputs
Progress Report Objectives (from AD-416) Optimization of sample preparation procedures for extraction of phenolic compounds from different food and plant matrices. Approach (from AD-416) Samples will be extracted by different procedures such as stirring, sonication, shaking, and accelerated solvent extractor. Significant Activities that Support Special Target Populations This report documents research conducted under a specific cooperative agreement between ARS and the University of Georgia (Athens, Georgia). Additional details of research can be found in the report for the in- house associated project 1235-52000-048-00D, �Analytical Methods for the Determination of Phenolic Phytonutrients in Foods.� An agreement was established with a professor in the Department of Food Science & Technology to allow a graduate student to spend 3 months at USDA working on the application of different sample preparation techniques to the assay of isoflavones in soybeans. A wide range of extraction procedures that have been used for extraction of isoflavones from soybean samples (as described in the peer-reviewed published literature) were compared. An improved and efficient extraction method was developed that increased isoflavone yields by over 15 per cent as compared to other previously published procedures. This agreement was monitored through routine telephone and e-mail contacts with the professor.
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