大麦籽粒中γ-氨基丁酸、总黄酮和生物碱含量在发芽过程中的变化  

Transformation of γ-aminobutyric Acid and Total Flavones and Alkaloids Content in Barley Grains During Germination Process

作　　者：曾亚文[1] 杨涛[1] 普晓英[1] 杜娟[1] 杨树明[1] 张晓燕[2,3] 

机构地区：[1]云南省农业科学院生物技术与种质资源研究所/云南省农业生物技术重点实验室,云南昆明650205 [2]大理学院生命科学与化学学院,云南大理671000 [3]昆明田康科技有限公司,云南昆明650231

出　　处：《麦类作物学报》2012年第1期135-139,共5页Journal of Triticeae Crops

基　　金：国家现代农业产业技术体系专项(CARS-05)

摘　　要：为了解大麦发芽过程中功能成分的变化,用分光光度计测定了28份大麦籽粒发芽前(无菌水浸泡24h,记作发芽0d)及发芽1～9d的γ-氨基丁酸(GABA)、总黄酮和生物碱的含量差异,结果表明:(1)大麦籽粒中的GABA和生物碱含量均为发芽0d高于发芽1～2d,而明显低于发芽3～9d的相应含量;发芽前后GABA累积最大均值是最小均值的2.1倍,生物碱累积最大均值是最小均值的11.6倍。(2)大麦籽粒发芽前总黄酮含量最高,发芽后相对较低;而发芽4～8d期间的GABA和生物碱含量相对较高。(3)不同大麦品系间籽粒GABA和生物碱含量在发芽4～6d差异明显,且达到峰值的频率较高;籽粒总黄酮含量在发芽8～9d差异明显,发芽前总黄酮含量达到峰值的频率最高。The difference of 7 -aminobutyric acid （GABA） and total flavones as well as alkaloids con- tent（mg . 100g ^-1） in grain and it＇s malt during 1-9 days germination of 28 barley cultivars were determined by spectrophotometry. The analytical results were as follows： （1） GABA and alkaloids content of barley grains before the germination are higher than that of 1-2 days but clear lower than that of 3-9 days after the germination, the most value for GABA＇s cumulation between barley grain and it＇s malt during 1-9 days germination is 2.1 times of the least value, however the most value for alkaloids cumulation is 11.6 times of the least value. （2） Total flavones of the barley grains before the germination is the highest, and it is relative low after the germination, but GABA and alkaloids content in malt for 4-8 days during germination are higher. （3）It was clear difference and peak value with the highest frequency of GABA and alkaloids content in barley grains during 4- 6 days among cuhivars in the same term; but clear difference and peak value with the highest frequency of total fla- vones during 8-9 days among cultivars in the same term.

关 键 词：大麦 芽期 Γ-氨基丁酸 总黄酮 生物碱 功能成分 

分 类 号：S512.3[农业科学—作物学] S312