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| In vitro antioxidant activity of ethanol extracts of Jatropha curcas seed kernel and shell |
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| DOI： |
| KeyWord:Jatropha curcas seed shell kernel ethanol extract antioxidant activity |
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| Abstract: |
| In order to improve the exploitation value of Jatropha curcas seed, the antioxidant activities of ethanol extracts of Jatropha curcas seed kernel and shell were investigated using in vitro antioxidant assays.The kernel and shell of Jatropha curcas seed were extracted by 75% ethanol respectively, and based on the analysis of the main components of the extracts, vitamin E was used as positive control, the scavenging ability on free radical (DPPH radical, ABTS+ radical, hydroxyl radical and superoxide radical ), reducing power and inhibition ability for linoleic acid autoxidation of the two extracts were determined.The results showed that the total content of polysaccharides in the ethanol extract of Jatropha curcas seed kernel/shell was 47.67% and 52.21%, and the total content of ketones was 0.774% and 4.22%, respectively. The ethanol extract of Jatropha curcas seed shell also contained 0.30% polyphenols. The two extracts had certain antioxidant activity, and the extract of seed shell was more effective in scavenging DPPH radical, ABTS+ radical, hydroxyl radical and superoxide radical than that of the extract of seed kernel. The reducing ability and inhibitory ability of linoleic acid autoxidation of the two extracts were relatively weak. The antioxidant activity of the ethanol extract of Jatropha curcas seed shell was better than that of the ethanol extract of Jatropha curcas seed kernel, which may be related to the rich content of flavonoids and polyphenols in the ethanol extract of shell. |
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