水苏糖是自然界存在的一种低聚糖,属于棉籽糖属半乳糖苷类非还原性功能低聚糖。是由1分子α-葡萄糖、1分子β-果糖和2分子α-半乳糖构成的四糖[1]。近年来对其功能的试验研究较多,水苏糖有增强免疫力、促排铅及通便等功能,但对水苏糖的安全性 Stachyose, an oligosaccharide present in nature, belongs to the non-reducing oligosaccharide of galactoglycoside galactosides. Is a tetrasaccharide composed of 1 molecule of α-glucose, 1 molecule of β-fructose and 2 molecules of α-galactose [1]. In recent years, more experimental research on its function, stachyose have enhanced immunity, and promote lead and laxative and other functions, but the safety of stachyose