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氨基酸强化谷物是改善其蛋白质营养质量的主要途径之一。由于多年来各国学者采用的评价方法和指标不一,氨基酸强化谷物的结果各异。本研究在前一实验中以国际传统指标,通过对动物的生长发育、氮贮留、蛋白质的利用效价等指标,表明广东大米用0.5％L-赖氨酸和0.3％D L-苏氨酸同时强化,其蛋白质效价显著地优于非强化大米单独用,0.3％或0.51-赖氨酸强化大米,蛋白质质量也有明显提高。本实验是在此基础上:(一)用多水平蛋白质摄人的氮平衡指数(Nitrogen BaIance Index,NBI)方法,进一步以动态观蔡并确证氨基酸强化大米的效果;(二)用相应于最佳氨基酸强化量的脱脂豆粉代替纯氨基酸强化大米,以观蔡应用大豆于实际的效果。
Amino acid fortified grain is one of the main ways to improve the nutritional quality of its protein. Due to the different evaluation methods and indicators adopted by scholars in various countries over the years, the results of amino acid fortified cereals vary. In the previous experiment, using international traditional indicators, indicators of growth and development of animals, nitrogen storage and protein utilization potency indicated that Guangdong rice was treated with 0.5% L-lysine and 0.3% D-threonine The acid also strengthened, its protein potency was significantly better than non-fortified rice alone, 0.3% or 0.51-lysine fortified rice, protein quality has also been significantly improved. This experiment is based on the following: (a) using the method of nitrogen uptake (NBI) at multiple levels of protein to further confirm the effect of amino acid fortification on rice by dynamic observation; (2) Good amino acid fortified defatted soy flour instead of pure amino acid fortified rice, so as to observe the actual application of soybean in Cai.