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| 植物油的不同组分DPPH自由基清除能力及其与微量有益成分含量的相关性 |
| DPPH free radical scavenging activities of different components in vegetable oils and correlation with their minor components |
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| DOI： |
| 中文关键词: 植物油 DPPH自由基清除能力 微量有益成分 相关性 |
| 英文关键词:vegetable oil DPPH free radical scavenging activity minor component correlation |
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| 中文摘要: |
| 研究评估13种常见植物油的极性组分、非极性组分和全油样品的DPPH自由基清除能力，并将DPPH自由基清除能力与生育酚、多酚、植物甾醇等微量有益成分含量进行相关性分析。结果表明：橄榄油、芝麻油、小麦胚芽油和米糠油极性组分的DPPH自由基清除能力高于其他植物油，均大于200 μmol TE/100 g；植物油非极性组分的DPPH自由基清除能力在10.53～553.20 μmol TE/100 g之间，小麦胚芽油和米糠油的清除能力较高；植物油全油的DPPH自由基清除效果比非极性组分的略高；植物油非极性组分、植物油全油的DPPH自由基清除能力与生育酚含量、β-谷甾醇含量、菜油甾醇含量呈显著相关(P<0.01)；植物油极性组分的DPPH自由基清除能力则与多酚含量呈显著相关(P<0.05)。 |
| 英文摘要: |
| The DPPH free radical scavenging activities of polar fraction, non-polar fraction and full oil sample of 13 different common vegetable oils were studied and evaluated, and the correlations between DPPH free radical scavenging activity and different minor components including tocopherol, polyphenol, phytosterol etc.were analyzed. The results showed that the polar fractions of olive oil, sesame oil, wheat germ oil and rice bran oil had higher DPPH free radical scavenging activities compared with other oils, all above 200 mol TE/100 g; the DPPH free radical scavenging activities of non-polar fraction in vegetable oils ranged from 10.53 mol TE/100 g to 553.20 mol TE/100 g, in which the DPPH free radical scavenging activities of wheat germ oil and rice bran oil were the highest;the DPPH free radical scavenging activity of full oil was slightly higher than that of non-polar fraction. The correlations of contents of tocopherol, -sitosterol and campesterol with DPPH free radical scavenging activities of non-polar fraction and full oil were statistically significant (P<0.01),while the correlation between polyphenol content and DPPH free radical scavenging activity of polar fraction was statistically significant (P<0.05). |
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