阳荷氨基酸组成分析与营养价值评价

Analysis of Amino Acid Composition and Evaluation of Nutritional Value of Zingiber strioatum Diels

研究分析阳荷氨基酸的含量和组成,并对其氨基酸营养进行评价.采用氨基酸自动分析仪检测阳荷幼嫩花序及成熟茎叶中各种氨基酸的含量,并用氨基酸比值系数法评价其必需氨基酸的组成.结果表明,阳荷幼嫩花序及成熟茎叶中总氨基酸含量分别为19.83%和7.75%,必需氨基酸占总氨基酸的比例分别为37.17%和37.55%,均接近于WHO/FAO的标准,比值系数分(SRC)分别为72.6和84.02.在各种必需氨基酸中,阳荷幼嫩花序的第一限制氨基酸为蛋氨酸+胱氨酸,阳荷成熟茎叶没有明显的第一限制氨基酸.阳荷中人体必需氨基酸种类比较齐全,且配比合理,说明阳荷是一种氨基酸营养价值很高的食品资源.

The purpose of this paper is to study amino acid content and composition of Zingiber strioatum Diels,and to evaluate its amino acid nutrition.The automatic amino acid analyzer is used to test the con-tent of amino acids in immature inflorescence and mature stems and leaves of Zingiber strioatum Diels, and the amino acid ratio coefficient method is used to evaluate the composition of the essential amino acids.The results show that the content of total amino acid in immature inflorescence and mature stems and leaves of Zingiber strioatum Diels were 19.83%and 7.75%respectively,the proportion of essential a-mino acids to total amino acids were 37.17%and 37.55%respectively, are close to the WHO/FAO standard, ratio coefficient of points （ SRC） were 72.6 and 84.02 respectively.Among various kinds of es-sential amino acids,the first limiting amino acid in immature inflorescence of Zingiber strioatum Diels was Met＋Cys,mature stems and leaves of Zingiber strioatum Diels had no obvious limiting amino acids.The es-sential amino acids in Zingiber strioatum Diels are relatively complete,and their proportions are reasona-ble,which shows that Zingiber strioautm Diels is a kind of food resources with high nutrional value .