Composition and Physiological Properties of Several Sources of Dietary Fiber

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Abstract
Dietary fiber sources containing 31 – 99% of neutral detergent fiber were evaluated for functional properties and physiological effects on rats. The high water hydration capacity of mucilage‐containing psyllium seeds and flax hulls were associated with low digestibility, high volume and weight of feces, and low serum triglycerides. Mustard hulls and sunflower heads, which contained less mucilage or pectin, were intermediate in water hydration capacity and as bulking agents in the gastrointestinal tract. Fiber sources rich in hemicellulose and lignin (wheat bran, sunflower hulls) had high fat absorption properties, digestibility and serum triglycerides. Pea hulls and cellulose showed less strong functional properties as sources of dietary fiber.

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