Prebiotics are food ingredients that selectively promote the activity or growth and reproduction of beneficial bacteria in the gut, thereby improving the health of the host. Prebiotics have the advantages of low calorie, safety, probiotics growth and immunity enhancement.
Neoagarooligosaccharides are a series of neutral oligosaccharides with 3,6 ether - -l-galactose as the non-reducing terminal end and -d-galactose as the reducing terminal end, which are degraded by -galactose or agarose from red algae.
Studies have shown that Neoagarooligosaccharides can tolerate digestive enzymes, significantly change the structure of intestinal flora, promote the proliferation of bifidobacteria and lactobacillus, inhibit the growth of harmful bacteria, enhance glucose tolerance, slow the weight gain under the effect of high-fat diet, and affect the content of the appetit-suppressing hormone GLP-1 in serum. Its probiotics are related to the degree of polymerization. The oligosaccharides with high degree of polymerization have better effect than those with low degree of polymerization. Neoagarooligosaccharides also have stronger proliferative effect on Lactobacillus than bifidobacterium.