l-threonine is a neutral, genetically coded amino acid . it is essential in human nutrition . it is a colorless crystalline amino acid that is derived from the hydrolysis of protein 蘇氨酸是一種由蛋白質(zhì)水解而成的中性氨基酸,無色晶狀,是人類必需的營養(yǎng)成分。
l-glutamine is a non-essential, neutral, genetically coded amino acid . occurring widely in plant and animal tissue and produced commercially for use in medicine and biochemical research 谷酰胺是一種非必需的中性氨基酸,大量的含于動(dòng)植物組織,大量生產(chǎn)用于醫(yī)藥和生化研究。
l-tryptophan is a neutral, genetically coded amino acid . iit is essential in human nutrition . formed from proteins during the digestive process by the action of proteolytic enzymes 色氨酸是一種重要的中性必需氨基酸,在消化過程中,通過蛋白水解作用酶的運(yùn)動(dòng)而由蛋白質(zhì)形成。