青稞苗粉营养品质分析

Nutritional Quality Evaluation of Highland Barley Grass Powder

为了解青稞苗粉的品质,对9个青稞品种苗粉中的营养成分、活性成分及氨基酸进行了分析研究。结果表明:不同青稞品种苗粉中各营养成分含量差异显著。参试青稞苗粉中蛋白质含量在21.70%~27.50%之间,粗脂肪含量在2.42%~3.46%之间,品种之间差异不显著(p<0.01);总黄酮含量在0.70%~1.09%之间,叶酸的含量为0.689~1.001mg/g;维生素C和维生素E的含量分别在7.38~19.31 mg/100 g和3.442~7.338 mg/100 g之间。青稞苗粉中氨基酸总量为18.94%~23.14%,最高的是QTB11,最低的是QTB13;青稞苗粉中必需氨基酸占水解氨基酸总量的37.20%~39.17%,其中谷氨酸、天冬氨酸含量最丰富,甲硫氨酸为第一限制性氨基酸。

Nutritious active ingredients and amino acid were researched to realize the quality of 9 highland barley varieties grass powder. The results indicated that the content of nutrition ingredients in different highland barley varieties grass powder were significant difference. The range of protein content in grass powder was 21.70%-27.50%, the crude fat was 2.42%-3.46%, and there was no significant different between them(p<0.01). The total flavonoids content ranged from 0.70% to 1.09%, and folic acid content ranged from 0.689 to 1.001 mg/g. The contents of vitamin C and vitamin E ranged from 7.38 to 19.31 mg/100 g and from 3.442 to 7.338 mg/100 g, respectively. The total amount of amino acids in highland barley grass powder was 18.94%-23.14%, and the content in which QTB11 was the highest meanwhile QTB13 was the lowest level. The essential amino acids in highland barley grass powder accounted for 37.20%-39.17% of the total hydrolyzed amino acids, among which glutamic acid and aspartic acid were the most abundant, and methionine was the first limiting amino acid.