甜菜碱是一种两性离子季铵化合物，主要存在于动物、微生物和植物中。它是小麦、贝类、菠菜和甜菜等几种食品的主要成分之一。它也被称为三甲基甘氨酸、赖氨酸、甘氨酸甜菜碱和甜菜素。甜菜碱是甘氨酸的甲基衍生物。它的分子量为117.2。 应用： 一水甜菜碱已用于:1.制备KLA缓冲液中以进行聚合酶链反应（PCR）；2.研究其对人醛糖还原酶Km和Vmax的影响；3.研究其在体内和体外对A549肺癌生长的影响 Betaine is a zwitterionic quaternary ammonium compound and is mainly present in animals, microorganisms and plants. It is one of the main constituent of several food items like wheat, shellfish, spinach and sugar beets. It is also termed as trimethylglycine, lycine, glycine betaine and oxyneurine. Betaine is a methyl derivative of glycine. It has a molecular mass of 117.2