Abstract
The studies of Reinhold and his co-workers (Reinhold, 1975) suggest that the high incidence of mineral-deficiency diseases (notably zinc deficiency) in the rural population of Iran is due to the high intake of dietary fibre. Experiments by the author conflict with this view and show that, when a fibre-rich and phytaterich cereal product is fed to rats, phytate is the major determinant of zinc availability. The mechanisms by which dietary fibre could impair mineral absorption are discussed in relation to fibre source, amounts consumed and the possible modifying effects of other dietary ingredients.
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