Advance Inorganics

FOS can be added as a sugar substitute to “low-calorie foods,” or as a bulking agent or “added fiber” to nutritional bars and beverages, baby foods, biscuits, cakes, confectionery, milk, hard candies, ice cream, yogurt, jams, jellies, muffins, ready-to-eat cereals, sorbet, pre-prepared soups or other commercial foods [5].

FOS can be extracted from chicory roots or produced from inulin (using the enzyme inulase) or sucrose (using the enzymes derived from Aspergillus japonicus yeasts) [5]. FOS is available as powder or capsules. It can be found in some prebiotic, probiotic and fiber supplements. Before buying FOS-containing supplements, consider there are plenty of natural foods containing prebiotics and fiber.