Question is whether or not 'Isomalto-Oligosaccharides' a natural prebiotic fiber, is a fiber or not?
From wiki
Isomaltooligosaccharide (IMO) is a mixture of short-chain carbohydrates which has a digestion-resistant property. IMO is found naturally in some foods, as well as being manufactured commercially. The raw material used for manufacturing IMO is starch, which is enzymatically converted into a mixture of isomaltooligosaccharide.
The American Association of Cereal Chemists (AACC) defined soluble fiber as “the edible parts of plants or similar carbohydrates resistant to digestion and absorption in the human small intestine with complete or partial fermentation in the large intestine”. Dietary fibers are the indigestible portion of plant foods that move food through the digestive system, absorbing water and making defecation easier. Dietary fiber consists of many other plant components such as dextrin, inulin, lignin, pectin, beta-glucans and resistant-oligosaccharides. For a dietary substrate to be classified as a Fiber, following criteria are required;
1) The substrate must be resistant to digestion & absorption in upper GI tract
2) It may undergo partially or completely fermentation by bifidobacteria or do not ferment at all
3) Fermentation may results in SCFA that metabolize in liver and confer many physiological benefits to the host
Since IMO consists mainly of 3 to 7 glucose units linked together mostly by digestion-resistant α(1-6) linkages with having a prebiotic effect as well as exhibiting the properties of retaining moisture, producing bulking effect and helping moving the stool forward, it is considered a type of dietary fiber
It looks like Quest is correct, and this lawsuit may just be 'whatever'