Quality Characteristics and Anthocyanin Profiles of Different Vitis amurensis Grape Cultivars and Hybrids from Chinese Germplasm

To evaluate the importantVitis amurensisgermplasm, the quality characteristics and anthocyanin profiles of the ripe berries of 20V. amurensisgrapes and 11 interspecific hybrids in two consecutive years were analysed. Compared with theV. viniferagrapes,V. amurensisgrapes had small berries with low total soluble solids and high titratable acids, and were richer in phenolic compounds except for flanan-3-ols in their skins but had lower phenolic contents in their seeds and showed lower antioxidant activities. An outstanding feature of theV. amurensisgrapes was their abundant anthocyanin contents, which was 8.18-fold higher than the three wine grapes ofV. vinifera. The anthocyanin composition ofV. amurensiswas characterized by an extremely high proportion of diglucoside anthocyanins (91.71%) and low acylated anthocyanins (0.04%). Interestingly, a new type of speculated 3,5,7-O-triglucoside anthocyanins was first identified and only detected inV. amurensisgrapes and hybrids. Based on the total phenolic and anthocyanin characteristics,V. amurensisgrapes were set apart fromV. viniferacultivars and the interspecific hybrids, for the same qualities, fell between them, as assessed by principal component analysis.Keywords:Vitis amurensis;anthocyanin composition and content;total phenolic content;general characteristic;antioxidant activity