高赖氨酸大麦基因型蛋白质质量的氨基酸组成及生物学评价

Amino acid composition and biological evaluation of the protein quality of high lysine barley genotypes.

作者信息

Jood S, Singh M

机构信息

Department of Foods and Nutrition, CCS Haryana Agricultural University, Hisar, India.

出版信息

Plant Foods Hum Nutr. 2001;56(2):145-55. doi: 10.1023/a:1011114604008.

DOI:10.1023/a:1011114604008

PMID:11318503

Abstract

The protein quality of high lysine barley genotypes Notch1 Notch2, Riso-1508 and Hiproly grown in Indian soil was evaluated by determining amino acid composition and also by rat growth and nitrogen balance studies. Protein and fat contents were found to be highest in Riso-1508. Lysine concentration (5.26 g/16g N) of Riso-1508 was also highest compared to the other high lysine genotypes. Rat feeding trials indicated that the growth promoting qualities of the proteins of genotype Riso-1508 were significantly (p < 0.05) higher than the low lysine barley genotype. The comparatively low lysine barley diet had more digestible protein than the high lysine barley diet. However, the BV and NPU of the high lysine barley were significantly (p < 0.05) higher. This improvement is of importance in meeting the essential amino acid requirements of man as well as other monogastric animals. The study showed that the high lysine barley harvested in Indian agroclimatic conditions retained high lysine quality.

摘要

通过测定氨基酸组成以及进行大鼠生长和氮平衡研究，对在印度土壤中种植的高赖氨酸大麦基因型Notch1 Notch2、Riso - 1508和Hiproly的蛋白质质量进行了评估。发现Riso - 1508的蛋白质和脂肪含量最高。与其他高赖氨酸基因型相比，Riso - 1508的赖氨酸浓度（5.26 g/16g N）也最高。大鼠喂养试验表明，基因型Riso - 1508的蛋白质促进生长的品质显著（p < 0.05）高于低赖氨酸大麦基因型。低赖氨酸大麦日粮比高赖氨酸大麦日粮具有更多的可消化蛋白质。然而，高赖氨酸大麦的生物价（BV）和净蛋白质利用率（NPU）显著（p < 0.05）更高。这种改善对于满足人类以及其他单胃动物的必需氨基酸需求具有重要意义。研究表明，在印度农业气候条件下收获的高赖氨酸大麦保留了较高的赖氨酸质量。