| 高温操作及贮存过程中葡萄多酚的稳定性 |
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| 引用本文： | 陈晓云,张峻,吉伟之,齐欣,桂启富.高温操作及贮存过程中葡萄多酚的稳定性[J].天津农业科学,2003,9(2):18-21. |
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| 作者姓名： | 陈晓云 张峻 吉伟之 齐欣 桂启富 |
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| 作者单位： | 1. 天津市园艺工程研究所,天津,300384
2. 广东大日生物化学药业有限公司,广州,510507 |
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| 基金项目： | 天津市自然基金重点资助项目(993804011) |
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| 摘 要： | 对葡萄籽多酚提取物在高温操作及贮存过程中的稳定性进行了研究。结果表明,25℃时,葡萄多酚在80%的乙醇溶液中可存放5d,在水溶液中可存放3d。高温处理(90℃时超过12h,50℃时超过24h)使葡萄籽提取物的颜色变深,原花青素含量降低,但对总酚含量及DPPH自由基的清除能力影响不大。水不溶性葡萄多酚与水溶性酚类物质在相同的总酚含量下,对DPPH的清除能力无明显差异。
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| 关 键 词： | 葡萄籽 多酚类物质 稳定性 |
| 文章编号： | 1006-6500(2003)02-0018-04 |
| 修稿时间： | 2002年11月25 |
Storage and Thermal Stability of Polyphenols from Grape Seeds |
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| Abstract: | The stability of polyphenols from grape seeds during storage and h eat process was investigated.The results showed that grape seed polyphenols cou ld be stored at25℃for5days in80%ethanol solution or3days in water withou t obvious change.When grape seed polyphenols was incubated at50℃for24h or at90℃for12h,the color and the concentration of procyanidin changed signif icantly,whereas the concen-tration of total phenols and DPPH free radical scav enging ability remained almost constant.The study also indicated that under the identical concentration of total phenols,the water-insoluble grape seed polyp he-nols had the same DPPH scavenging ability as that of the water-soluble grap e seed polyphenols. |
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| Keywords: | grape seeds polyphenols stability |
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