According to nernst equation , the concentration of phenylalanine is determined by the potential measurement 根据nernst方程，由电位的变化即可确定苯丙氨酸的浓度。
These findings indicated that the alternation in gyra was responsible for the resistance of the fqns of the salmonella 氨基酸序列比较表明， 83位氨基酸出现了丝氨酸苯丙氨酸的置换。
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。
Special laboratory medicine ; determination of l - alanine : 2 - oxoglutarate aminotransferase alaninaminotransferase in serum or plasma ; standard method 专门实验室医学. l -丙氨酸测定.血清或血浆中二氧代二
The half - life was then determined as 71 days and the crystal powder sample , containing more than 98 . 61 % of l - alanine , was obtained 转化液经提取，获得l -丙氨酸结晶。产品经鉴定， l -丙氨酸含量达到98 . 61 。
Based on above analysis , this thesis improved genetic engineering bacteria of phenylalanine biosynthesis on the following three respects : 1 基于上述分析，本文主要从以下三个方面对苯丙氨酸基因工程菌进行了改造： 1
Aromatic metabolites such as tryptophan , phenylalanine , tyrosine which can only be synthesized by plants and microbes are essential amino acids for human and animals 芳香族氨基酸包括酪氨酸、苯丙氨酸和色氨酸，是人体和动物体内的必需氨基酸。
In addition , phenylalanine is used in aspartame production and acts as intermediate and well vector in synthesis of some anti - cancer drugs 苯丙氨酸既是合成新型甜味剂aspartame的原料，又是合成一些抗癌药物的中间体和良好载体，市场需求日益增加。
Textiles . tests of fibres . method of determining the quantity of cysteic acid contained in hydrolysates of wool by electrophoresis on paper and spectrophotometry 纺织品.纤维试验.用纸上电泳法和分光光度计法测定羊毛水解产物中磺基丙氨酸含量的方法
Mutant gene affected m - centrin propertities . from uv different spectrum , we know that there are fine absorption of tyr and trp apart from those of phe 实验表明：从紫外吸收图谱看，突变之后的中心蛋白中除了苯丙氨酸的精细结构外还有酪氨酸和色氨酸的吸收峰。
