Tomatoes are one of the vegetables rich in oligosaccharides.
Oligosaccharides are functional foods very popular in Japan; they cannot be digested by the human organism, but are used specifically by bifidobacteria, a group of microorganisms which are antagonists of undesirable bacteria in the digestive tract. The beneficial health effects of the consumption of oligosaccharides are mainly due to the increase in the number of bifidobacteria in the colon.
Between the fruits and vegetables that contain oligosaccharides are: roots of chicory, Jerusalem artichokes, asparagus, bananas, tomatoes, allium genus vegetables and burdocks.
Among the beneficial health effects associated to oligosaccharides are reduction of: constipation, blood lipids and cholesterol, blood pressure and intestinal toxins.