Preparation method of glycosylation enteromorpha oligosaccharide for reducing glucose level and regulating intestinal flora

The invention discloses a preparation method of glycosylation enteromorpha oligosaccharide for reducing glucose level and regulating intestinal flora. The method includes the steps of smashing enteromorpha in a superfine mode after drying, conducting backflow extracting through ethyl alcohol, conducting concentrating, drying and smashing to obtain defatted enteromorpha powder, removing protein, polysaccharide and pigment, adding fucosyltransferase into a reaction system containing enteromorpha oligosaccharide, and conducting fucus glycosylation reaction to prepare fucus glycosylation enteromorpha oligosaccharide. It is proved that glycosylation enteromorpha oligosaccharide has strong restraining activity for alpha-glucosaccharase, remarkably increases the number of intestinal probiotics, and can be used for preparing medicines or health care products for preventing and treating diabetes and improving metabolic diseases of intestinal flora and the like.