期刊
EMIRATES JOURNAL OF FOOD AND AGRICULTURE
卷 25, 期 9, 页码 641-647出版社
UNITED ARAB EMIRATES UNIV
DOI: 10.9755/ejfa.v25i9.15978
关键词
Phenolic compounds; beta-glucosidase; Bitter gourd; Zucchini
The enzymatic and non-enzymatic antioxidative capacities of bitter gourd (Momordica charantia) and zucchini (Cucurbita pepo) were investigated in water extracts and chemical buffer extracts. Bitter gourd and zucchini fruits were purchased from a farmer's market and homogenized separately in water and in a native enzyme extraction buffer. Total phenolic compounds, free radical DPPH scavenging activity, SOD activity and beta-glucosidase activity were assayed in the extracts. The average total phenolic compounds recorded in bitter gourd were 13.28 GAE/g fresh weights while in zucchini, the average was 8.67GAE/g fresh weight. This study also found that bitter gourd was 82.05% as effective as ascorbic acid in inhibiting the free radical DPPH while zucchini was 12.19% as effective. The results indicated that bitter gourd was significantly higher in antioxidant content and in beta-glucosidase activities than zucchini (P<0.05). On the other hand, significantly higher SOD activities were recorded in zucchini than in bitter gourd extracts.
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