Methane Production and Excretion: A Marker of Cecal Fermentation

摘要: Dietary fiber is a complex heterogeneous material increasingly used in the management of colorectal and other disease. can be defined as that component plant cells resistant to human alimentary enzyme action (Trowell, 1974). Some studies have shown degree hydrolysis by colonic bacteria. However, which components are hydrolyzed extent their breakdown colon not clear. Not enough known metabolism colon. The effect dietary on gastrointestinal function man depends type (Royal College Physicians, 1981). It now appreciated cereals, bran, vegetable behave differently along tract (Stephens Cummings, 1980). Indirect evidence suggests cecum major site for certain fibers. Anaerobic bacteria produce methane, hydrogen, volatile fatty acids, carbon dioxide. has been suggested affects stool weight either directly (Smith et al., 1981), bacterial mass 1980), or acids (VFA) derived therefrom (Hellendoorn, 1978). Retention water matrix with cereal bran influences