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Dietary intakes of phytate and its meal distribution pattern amongst staff and students in an institution of higher education

Published online by Cambridge University Press:  09 March 2007

A. Wise ,
G. M. Lockie  and
J. Liddell
A. Wise
Affiliation:
School of Nutritional Science, Robert Gordon's Institute of Technology, Queen's Road, Aberdeen AB9 2PG
G. M. Lockie
Affiliation:
School of Nutritional Science, Robert Gordon's Institute of Technology, Queen's Road, Aberdeen AB9 2PG
J. Liddell
Affiliation:
School of Nutritional Science, Robert Gordon's Institute of Technology, Queen's Road, Aberdeen AB9 2PG
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Abstract

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1. Seventy-six students and staff at Robert Gordon's Institute of Technology weighed all items of food consumed for 1 week.

2. Mean phytate-phosphorus intakes ranged from 141 mg for female students to 237 mg for male students. Breakfast was proportionally a more important contributor to daily phytdte intakes than to calcium, zinc, and energy intakes. Cereals were the most important contributors to the phytate at breakfast, whilst wholemeal and brown bread were more important at lunch and the evening meal.

3. The phytate: Zn molar ratio was distributed amongst meals similarly to the more complex ratio, (Ca x phytate):(Zn x energy) (CP:ZE); both ratios have been suggested as useful predictors of Zn availability. CP: ZE ranged more widely when calculated for meals than for days, and therefore some meals could be associated with poor Zn availability whilst others could compensate with higher availability. Subjects with the highest values for CP:ZE were mostly amongst the group of nutrition students.

Type
Clinical and Human Nutrition papers: Studies in Man
Information
British Journal of Nutrition , Volume 58 , Issue 3 , November 1987 , pp. 337 - 346
Copyright
Copyright © The Nutrition Society 1987

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