Solid Phase Microextraction with On-fiber Derivatization for the Determination of trans-Resveratrol in Iowa Red Wines
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Since 1905, the Department of Agricultural Engineering, now the Department of Agricultural and Biosystems Engineering (ABE), has been a leader in providing engineering solutions to agricultural problems in the United States and the world. The department’s original mission was to mechanize agriculture. That mission has evolved to encompass a global view of the entire food production system–the wise management of natural resources in the production, processing, storage, handling, and use of food fiber and other biological products.
History
In 1905 Agricultural Engineering was recognized as a subdivision of the Department of Agronomy, and in 1907 it was recognized as a unique department. It was renamed the Department of Agricultural and Biosystems Engineering in 1990. The department merged with the Department of Industrial Education and Technology in 2004.
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1905–present
Historical Names
- Department of Agricultural Engineering (1907–1990)
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- College of Agriculture and Life Sciences (parent college)
- College of Engineering (parent college)
- Department of Industrial Education and Technology, (merged, 2004)
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Abstract
Resveratrol (3,5,4’-trihydroxystilbene), found in both grape skin and wines, belongs to the poly-phenol group and has been shown to have cancer-preventing properties, boost cardio-protection and antioxidant activity, inhibition of platelet aggregation and anti-inflammatory activity. In this study, a new method for the trace analysis of trans-resveratrol was developed by using solid phase microextraction with on-fiber silylation derivatization. Multidimensional GC equipped with two columns (a non-polar column and a medium polar column) connected in series, a heart-cut valve and cryogenic focusing capacity and coupled with a mass spectrometric detector with simultaneous scan/SIM mode was employed for the chromatographic separation step which increased separation power allows more accurate quantitative results for trans-resveratrol analysis in the complex matrix-wine. The effects of SPME fiber selection, extraction time as well as extraction temperature were investigated. The optimum conditions of derivatization time and temperature were also studied. Calibration curves for peak area were prepared for the different concentration of extracted cis- and trans-resveratrol. The method detection limit of trans-resveratrol based on SPME on fiber derivatization and multidimensional GC-MS with cryotrap and heart-cut was estimated in this study. The content of total resveratrol of six Iowa red wine samples was determined as well.
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This is an ASABE Meeting Presentation, Paper No. 085150.