大麦籽粒及其炮制品中总黄酮含量分析

Analysis on total flavonoids content in grain of Hordeum vulgare and its processed products

大麦（Hordeum vulgare Linn．）为药食同源植物，发芽的大麦籽粒即大麦芽，是常用中药材之一。据记载，将大麦幼芽干燥后获得的生麦芽具有健脾、和胃、通乳的功效；将生麦芽加工成炒麦芽，具有行气、？肖食、回乳的作用；由生麦芽加工获得的焦麦芽则具有消食、化滞的作用。大麦籽粒及其炮制品中含有多种碳水化合物以及丰富的酶类、生物碱和黄酮类成分，其黄酮类成分具有清除自由基、抗衰老、改善记忆、治疗老年痴呆症、降血糖、降血脂、抗癌、促孕及抑乳等功效。中国是世界大麦的起源中心之一，具有丰富的大麦种质资源，但用于药用麦芽生产或者保健品开发的大麦品种却极为有限。鉴于此，作者采用可见分光光度法对来源于全国各地的98份大麦种源的籽粒及其炮制品.

Total flavonoids content in 98 grain samples of Hordeum vulgare Linn. collected from 22 provinces and cities and its processed products （including raw malt, torrefied malt and ustulate malt） were determined by visible spectrophotometry method, and also, effects of row types and seed coat bare situations on total flavonoids content in grain and its processed products were also studied. The results show that there are bigger differences in total flavonoids content among grain samples and its processed products from different sources, and generally, total flavonoids contents in grain, raw malt and torrefied malt of hull barley ＂Leqiug heshenqiao damai＂ from Zhejiang are higher. The average of total flavonoids content in grain, raw malt, torrefied malt and ustulate malt of H. vulgare are 3.23, 4.47, 5.41 and 6.16 mg . g t , respectively with extremely significant difference, meaning that processing method has an extremely significant effect on total flavonoids content of H. vulgate. Generally, different row types and seed coat bare situations have no significant effect on total flavonoids content in grain and its processed products of H. vulgare.