摘要:
选用3种种皮颜色类型的62个水稻推广品种和种质资源,对不同色稻黄酮含量及其差异进行分析研究,研究结果表明:①在黑、红和白3种色稻样品中,精米中黄酮含量依次为(0.093±0.052)g·hg-1、(0.025±0.027)g·hg-1和(0.007±0.014)g·hg-1,米糠中黄酮含量依次为(3.898±0.940)g·hg-1、(0.706±0.349)g·hg-1 和(0.124±0.053)g·hg-1;②黑米精米和米糠中黄酮含量显著高于白米和红米,分别为红米的3.72倍和5.52倍,为白米的13.29倍和31.44 倍;红米显著高于白米, 精米和米糠中的黄酮含量分别为白米的3.57倍和5.69倍.③在3种色稻中,米糠中的黄酮含量均大幅度高于精米的黄酮含量,黑、红、白3种色稻米糠中黄酮含量分别为精米中的41.91倍、28.24倍和17.71倍.
关键词:
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黑米 /
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红米 /
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白米 /
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精米 /
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米糠 /
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黄酮
Abstract:
Sixty-two rice varieties and germplasms with different colors of seed coat were employed to study the contents and distribution of flavonoid. Results showed as follows:(1)In black and red and white rice, the mean flavonoid content in polished rice were(0.093?0.052)g·hg-1,(0.025?0.027)g·hg-1 and(0.007?0.014)g·hg-1 respectively, the mean flavonoid content in rice bran were(3898?0.940)g·hg-1,(0.706?0.349)g·hg-1 and(0.124?0.053)g·hg-1 respectively;(2)The flavonoid content in black rice were significantly higher than those of the red and white, mean flavonoid content in polished rice and rice bran of black rice were 372 times and 552 times respectively as much as those of red rice, and 1328 times and 3143 times respectively as much as those of white rice;the flavonoid content in red was significantly higher than that in white, mean flavonoid content of red rice were 357 times and 569 times respectively as much as those of white rice;(3)Mean flavonoid content in rice bran of various color rice were significantly higher than that in polished rice. The flavonoid content in rice bran were 4191 times,28.24 times and 1771 times respectively as much as that in polished rice.
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