found: Wikipedia online, Aug. 15, 2007(Prebiotics are a category of functional food, defined as: Non-digestible food ingredients that beneficially affect the host by selectively stimulating the growth and/or activity of one or a limited number of bacteria in the colon, and thus improve host health. Most potential prebiotics are carbohydrates (such as oligosaccharides), but the definition does not exclude the use of non-carbohydrates as prebiotics ... Typical dietary sources of prebiotics are soybeans, Jerusalem artichokes (which contain inulin), raw oats, unrefined wheat and unrefined barley)
