BannerBio's new orVac Grape Seed PE -- High ORAC Value. BannerBio's orVac Grape Seed PE is a highly soluble extract manufactured under GMP by an exclusive proprietary process. BannerBio's orVac Grape Seed PE has an ORAC value over 18, 000 as tested and approved by Brunswick Laboratories, which at present is the highest level in nutraceutical industry worldwide.