2.1.1. Grape materials
Fully ripened Muscadine grape (Vitis rotundifolia Michx.) cv.
Noble (red) and cv. Carlos (bronze) were harvested from the Center
for Viticulture and Small Fruit Research (latitude 30.65 N, longitude
84.60 W) at Florida A&M University on September 2, 2011.
The collected samples were shipped to the University of Florida
on the same day and stored in a cold room (4C). Grape skins
and seeds were separated manually from berries and freeze-dried
in a freeze drier (Advantage, The Virtis Company, NY, USA) within
the following three days. The freeze-dried samples were stored in
vacuum-packaged polyethylene pouches at 20C until analysis