l-alanine is a neutral, genetically coded amino acid . it is a crystalline amino acid, that is a constituent of many proteins 丙氨酸是一种晶体状的中性氨基酸,是许多蛋白质的组成成份。
l-cysteine is a non-essential ( or semi-essential ), neutral, genetically coded amino acid, derived from cystine and found in most proteins 半胱氨酸是一种中性氨基酸,从胱氨酸中提取,并存在于大多数蛋白质中。
l-aspartic acid is a non-essential, acidic, genetically coded amino acid . found especially in young sugar cane and sugar-beet molasses 天冬氨酸是一种非必需的酸性氨基酸,尤指从小的甘蔗和甜菜的糖蜜中提取的。
l-histidine is a basic, genetically coded amino acid . it is essential for human development ( " semi-essential " ), and important for the growth and repair of tissues 组氨酸是一种碱性氨基酸,对于组织的生成和修复具有很重要的作用。
l-asparagine is a non-essential, neutrall, genetically coded amino acid . it is a crystalline amino acid, found in many plants, that is easily hydrolyzed to aspartic acid 天冬酰胺是一种非必需的中性晶体氨基酸,许多植物里都有,易于水解为天门冬氨酸。