45F-24 |
Anthocyanins profile of Louisiana wild muscadine |
A. F. TRAPPEY, II1, H. A. Bawadi2, and J. N. Losso1. (1) Dept. of Food Science, Louisiana State Univ. Agricultural Center, 111 Food Science Bldg., Baton Rouge, LA 70803-4200, (2) School of Human Ecology, Louisiana State Univ. Agricultural Center, 125 Human Ecology Bldg., Baton Rouge, LA 70803 Wild muscadine (Vitis rotundifolia Michx.) is native to the southeastern region of the United States and is found wild in Louisiana, the Gulf of Mexico, Delaware, Georgia, and many Midwestern states. Identification of anthocyanins in muscadine is of interest because of the chemical properties and health effects they may provide. Muscadine has been reported to contain high concentration of resveratrol. The objective of this study was to evaluate the anthocyanins profile of wild muscadine harvested in Louisiana. Muscadine samples were analyzed for anthocyanins concentration, color density, polymeric color, and % polymeric compounds. Anthocyanin concentrations were determined by the pH differential method. Anthocyanins were separated from polymeric phenolics by solid phase extraction and separated by HPLC. Color density and polymeric color were 0.5 ± 0.01 and 1.32 ± 0.02%, respectively. Monomeric anthocyanin concentration was 62.78 ± 0.21 mg/liter. Anthocyanin distribution by HPLC was about 40% of cyd-3-glu, 20-30% cyd-3-gal, and some unidentified anthocyanins. The low polymeric color was indicative of the sample age.
Session 45F, Fruit & Vegetable Products: Fruits (Fresh)
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