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铁皮石斛中基本氨基酸含量变异规律

Ailian ZHANG, Tao WEI,Jinping SI, Luying JIN, Yina Mo

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica(2011)

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Abstract
目的:了解铁皮石斛种质、生理年龄对氨基酸含量的影响,为铁皮石斛药材质量评价与优质药材培育提供依据.方法:采集浙江人工栽培骨干基地一至三年生铁皮石斛11个种质33个样品,经盐酸水解后采用氨基酸分析仪测定基本氨基酸含量.结果:铁皮石斛中7种人体必需氨基酸的平均质量分数为0.28~2.96 mg·g-1,其他9种基本氨基酸的平均质量分数为0.53~4.20mg·g-1;种质对多种氨基酸的积累存在极显著或显著影响,生理年龄对氨基酸的积累也有显著影响,氨基酸含量随着生理年龄增加而增加.结论:铁皮石斛含有丰富的氨基酸,通过品种选育、延长采收期可以增加人体必需氨基酸和其他基本氨基酸的含量.
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Key words
Amino acid,Dendrobium officinale,Germplasm,Physiological age
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