Galacto-oligosaccharides (GOS) are non-digestible oligosaccharides consisting of 1 to 9 galactose units linked via glyosidic bonds to either terminal glucose or galactose. It is obtained by subjecting a concentrated lactose solution to the action of a β-galactosidase enzyme to produce galacto-oligosaccharides and further terminating the reaction. The galacto-oligosaccharides may be purified via ultrafiltration, chromatography, ion exchange, electrodialysis, activated carbon filtration or any other safe and suitable process in which all or part of the galacto-oligosaccharides, minerals, other sugars are concentrated into a viscous syrup or powder.
The acidity of GOS may be adjusted by the addition of safe and suitable pH adjusting ingredients. GOS for human consumption complies with all provisions of the U.S. Federal Food, Drug, and Cosmetic Act.
ADPI members can access all product standards information through the “Ingredients Resource Center for Members.”
GOS is a colorless to light tan/yellow viscous syrup or a white in powder form. Its flavor is slightly sweet and has a pH of 2.8-3.8 in syrup or 2.8-5.5 @ 10% solution in powder.
Product applications include infant formulas and conventional foods like soups, bakery products, cereals, jellies, jams and fruit and vegetable juices. Also in nutritional and dietary supplements, medical and specialized nutrition, and pharmaceutical applications.
Product should be stored in original container in a clean, dry, odor-free environment, under normal storage conditions at room temperature. Stocks should be rotated and utilized within 1-2 years.
Intermediate bulk container or any other suitable food grade closed container.