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Galacto-Oligosac(CAS NO. NA-1)
CAS NO.
NA-1
Name
Galacto-Oligosac
Alias
Galactooligosaccharides;GOS
Formula
(C6H11O5)n ,n=2-8
Formula weight
300-2000

Galacto-oligosaccharides (GOS), also known as oligogalactosyllactose, oligogalactose, oligolactose or transgalactooligosaccharides (TOS), belong to the group of prebiotics. Prebiotics are defined as non-digestible food ingredients that beneficially affect the host by stimulating the growth and/or activity of beneficial bacteria in the colon. GOS occurs in commercial available products such as food for both infants and adults.

Because of the configuration of their glycosidic bonds, galacto-oligosaccharides (GOS) largely resist hydrolysis by salivary and intestinal digestive enzymes. Galacto-oligosaccharides are classified as prebiotics, defined as non-digestible food ingredients that beneficially affect the host by stimulating the growth and/or activity of beneficial bacteria in the colon.[1] The increased activity of these health-promoting bacteria results in a number of effects, both directly by the bacteria themselves or indirectly by the organic acids they produce via fermentation. Examples of effects are stimulation of immune functions, absorption of essential nutrients, and syntheses of certain vitamins.