Name three common oligosaccharides. Where are they found?
Raffinose (a trisaccharide), stachyoses (a tetrasacchride), and verbascose (a pentasaccharide) are made up of glucose, galactose, and fructose and are found in beans, peas, bran, and whole grains.
Human digestive enzymes do not hydrolyze them, but the bacteria within the intestine can digest them. This is the basis for flatulence that occurs after eating these foods.