Xylose oligosaccharides are functional polymeric sugars formed by the binding of 2-7 xylose molecules in β-1,4 glycoside bonds. Compared with the soybean oligosaccharides, fructooligosaccharides, isomaltosaccharides, etc. commonly used by people, it has a unique advantage, and it can selectively promote the proliferative activity of bifidobacterium intestinal. Its bifidity factor function is 10-20 times that of other polymeric sugars.
Fructooligosaccharides refer to carbohydrates with 2 to 5 fructosyl groups as links, a glucose group as the end group, and fructosaccharide groups → fructose connecting bonds as the main skeleton. That is, it refers to a mixture of 1 to 4 fructosyl groups connected to the D- fructose group of sucrose (GF2), sucrose tetrasaccharide (GF3), sucrose pentasaccharide (GF4) and sucrose hexasaccharide (GF5) formed by β-2, 1 bond. Commodity fructooligosaccharides generally also contain a small amount of sucrose, fructose, and glucose. (Refer to the definition in the national standard currently under development)
1. The effective dose of xylose oligosaccharide per day: 0.7-1.4 g/ day, fructooligosaccharides 5.0-20.0g /day
2, xylose oligosaccharides do not contain sucrose, fructose; commodity fructooligosaccharides generally also contain a small amount of sucrose, fructose, glucose.
3, xylose oligosaccharides will not be absorbed by the human body, and all are selected by bifidobacteria, fructooligosaccharides will be partially absorbed by the human body, so it can not be fully used to produce bifidobacteria.
4, the United States FDA in November 2000 approved FOS as a recognized safety level functional food use, in 2014 oligosaccharide products through the United States FDAGRAS and FDADANDI official recognition, FDAGRAS certification products are non-toxic, harmless and any side effects, can be used in adult food, candy and beverages; FDANDI certification products can be added as the main party and formula to any health care products.
5. The Japanese Ministry of Health and Welfare approved FOS as a specific health food in 1995, until May 1998, 43 of the 108 specific health foods in Japan were added with oligosaccharides, of which 11 contained fructooligosaccharides. On March 24, 2007, it was approved by the Academic Committee of Health Food of Japan and the license no. 64 of the Ministry of Health and Welfare of Japan to identify xylose oligosaccharides as "specific health food additives", and the daily intake per person was O.7-7.5 grams. It can be sold directly as a health food or as a functional factor in health food.
6. The European Union has approved xylose oligosaccharides and fructooligosaccharides as food ingredients.