Red Vine Leaf (Red Leaf Grape)
BOTANICAL ORIGIN
Vitis vinifera L. - Leaf
ASSAY
≥3.0% of total flavonoids (isoquercitrin, quercetin-3-O-b-D-glucuronide and kaempferol-3-O-glucoside) by HPLC;
≥0.3% of anthocyanins by spectrophotometry
BIOLOGICAL ACTIVITY
Antioxidant activity, Capillarotropic