Abstract: To develop and utilize anthocyanins in purple passion fruit peel (Passiflora edulis Sims cv. Zixiang 1), anthocyanins were extracted and identified from purple passion fruit peel. The antioxidant activity of the crude extract and the purified anthocyanins and their inhibitory ability against type 2 diabetes-related enzymes were evaluated. Their in vitro bioavailability was also investigated. The results showed that the total anthocyanin content in the purified sample was (122.31 ± 1.31) mg/g. A total of 12 anthocyanins were identified, and six anthocyanins. In terms of antioxidant capacity, inhibitory effect on α-amylase and α-glucosidase and in vitro bioavailability, the purified anthocyanins were significantly superior to the crude extract.

Key words: Passiflora edulis Sims, peel, anthocyanins, identification, antioxidant