Betaine is a Quarternary alkaloid,which is widely found in animals,plants and microbe.As a methyl donor,it can modulate metabolism in animal.

• 甜菜碱是一种季铵型生物碱,广泛存在于动物、植物和微生物体内,是一种高效甲基供体,能调节动物体内渗透压、促进脂肪代谢和蛋白质合成。