A comparative study on antioxidant properties of yellow and purple passion fruit seed oil

Antioxidants of yellow and purple passion fruit seed oil were analyzed.Two kinds of passion fruit seed oil contained flavonoids,β-carotene and vitamin E and the highest one were flavonoids,for about 45 μg/m L. Total phenol content of yellow passion fruit seed oil and purple passion fruit seed oil were 16.69,15.82 mg GAE/kg,respectively.The antioxidant activities of two kinds of passion fruit seed oil were compared by measuring the iron reduction capability and the scavenging rates of DPPH·,O-2· and ·OH.The ability of reducing ferric and scavenging DPPH·of purple passion fruit seed oil was stronger than the yellow one,while the ability of scavenging O-2·and ·OH was opposite.The highest scavenging ability of two kinds of passion fruit seed oil for DPPH· were more than 84%,for O-2·were higher than 80%.This research revealed that two kinds of passion fruit seed oil had strong antioxidant activity.