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American Journal of Clinical Nutrition, Vol 54, 615-617, Copyright © 1991 by The American Society for Clinical Nutrition, Inc

REVIEW ARTICLES

Beyond dietary fiber

GA Spiller
Health Research and Studies Center, Inc, Los Altos, CA 94023-0338.

The complexity of plant foods high in dietary fiber poses new challenges to clinical investigators and leads to many study-design dilemmas. There are basic differences in studying purified polymers, highly concentrated but not purified fibers, and diets high in high- fiber whole foods. The fibrils of the plant cell wall are most likely altered when prepared as a pure chemical entity, and when fiber concentrates (eg, wheat bran) are used, the method of preparation may alter the composition of the final product. Whole-plant, high-fiber foods are complex storehouses of a diversity of polymers, including resistant starch, and of bioactive compounds. Furthermore, the addition of a reasonable amount of high-fiber food to the diet not only adds dietary fiber but many digestible, caloric macronutrients that alter the entire diet composition. These problems and dilemmas are reviewed.


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J. Sabate, G. E. Fraser, K. Burke, S. F. Knutsen, H. Bennett, and K. D. Lindsted
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[Abstract] [Full Text]


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Copyright © 1991 by The American Society for Nutrition