Publication Date

1992

Document Type

Dissertation/Thesis

First Advisor

Mehta, Sudha

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Human and Family Resources

LCSH

Fiber in human nutrition; Food--Fiber content; Food--Mineral content; Minerals in nutrition

Abstract

This study examined the effects of two sources of soluble fiber on the apparent balance of calcium, copper, and zinc among 12 adult free-living women who served as their own control for 4 weeks. Five subjects consumed products made with 10 g karaya gum and 7 subjects consumed 80.5 g oat bran in the form of 3 muffins and 1 serving of hot cereal. Each subject consumed her usual diet for one week (control period). During week 2, fiber products were gradually introduced into their normal diets replacing appropriate equivalent exchanges to prevent changes in caloric intake. During weeks 3 and 4, each subject consumed the entire amount of fiber products. Diet diaries and 24-hour urinary and fecal collections were obtained for three days during each period. Nutrient intakes were calculated using Nutritionist III, a microcomputer nutrient analysis program. All urine and fecal samples were analyzed for calcium, copper, and zinc using a DCP-Spectraspan V emission spectrophotometer. After eating karaya gum products, significant increases in fecal calcium and zinc excretions (p<.05) were observed, although apparent balances were not decreased significantly. Apparent calcium retention improved in the oat bran group, and was significantly higher than that of the karaya gum group, although the karaya gum group had a significantly greater calcium balance compared to the oat bran group during the control period. Apparent copper and zinc retention were reduced in both groups after fiber intake. These results suggest that the addition of karaya gum to a basal diet may adversely affect calcium, copper, and zinc apparent balances by increasing fecal excretion while oat bran may affect apparent retention of copper and zinc negatively.

Comments

Includes bibliographical references (pages [75]-86)

Extent

vii, 148 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

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