Differential contribution of grape peel, pulp, and seed to bioaccessibility of micronutrients and major polyphenolic compounds of red and white grapes through simulated human digestion

The composition and bioaccessibility of grape polyphenols and minerals is influenced by grape variety and matrix. Grape constituents may be determinant for the absorption of bioactives and are crucial for exploring grape by-products as functional food ingredients. In this study, the peel, pulp, and seeds of Vitis labrusca L. grapes were characterized by LC-DAD and ICP OES and changes in polyphenols, macro- and microelements were monitored using...