As they use the starch for energy, they release small carbohydrate molecules. (csiro.au)
Mutations in the gene encoding the enzyme sucrase - isomaltase, responsible for the digestion of small carbohydrates from sugars and starches called disaccharides. (biomeonboardawareness.com)
Small carbohydrates called FODMAP are responsible for all sorts of digestive problems. (healthline.com)