- GRAS exemption claim for isomalto-oligosaccharide or IMO US Food and Drug Administration
What are isomalto-oligosaccharides?
Isomalto-oligosaccharides (IMO) are non-digestible short-chain carbohydrates, composed of up to 10 glucose molecules joined by alpha (1,6) bonds .
IMO is a mixture of isomaltose, panose, isomaltotriose, isomaltopentose and higher branched oliogsaccharides .
- Calories per gram = probably less than 2
- Sweetness, relative to sucrose = 60-70% 
IMO is produced from starch obtained from wheat, barley or potatoes, using enzymes .
IMO is used as a sweetener in biscuits, cakes, crackers, nutritional food bars, edible ices, tofu, powdered milk, flavoured drinks, sweet sauces, toppings and syrups, ready-to-eat savouries and snacks.
IMO can be used as an added dietary fiber in certain commercial foods.
IMO is also used as a prebiotic supplement .
IMO in doses up to 30 g/day is Generally Recognized As Safe (GRAS) by the U.S. Food and Drug Administration (FDA) .
IMO is not fermentable by normal mouth bacteria, so it does not promote tooth decay .
IMO is less fermentable by normal intestinal bacteria than fructooligosaccharides (FOS). IMO in doses 15-20 grams per day should not cause abdominal bloating, nausea, excessive gas or diarrhea .