Butyrate provides an important energy source for the cells that line the colon. In fact, butyrate is the preferred source for energy metabolism in the colon. Butyrate production may also be responsible for the anticancer properties of dietary fiber. Butyrate has been shown to possess impressive anticancer activity and is used in enemas for ulcerative colitis. Certain fibers appear to be more effective than others in increasing the level of SCFAs in the colon. Pectins (both apple and citrus), guar gum, and other legume fibers produce more SCFAs than beet fiber, corn fiber, or oat bran.
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