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American Journal of Clinical Nutrition, Vol 28, 459-464, Copyright © 1975 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Prevention of folate deficiency by food fortification. II. Absorption of folic acid from fortified staple foods

N Colman, R Green and J Metz

The absorption of folic acid from maize, rice and bread fortified with pteroylglutamic acid was compared with that of an aqueous solution of pteroylglutamic acid in the same subjects. Feeding fortified maize and rice produced similar increments in folic acid concentration, which were approximately half those observed with the pteroylglutamic acid solution. Fortified bread produced a lower increment. Pteroylglutamic acid was found to resist destruction by boiling and baking at temperatures and times used for the conventional preparation of such foods. However, baking for longer periods resulted in a loss of folic acid activity. It is concluded that fortification of staple foods with folic acid may offer a practical adjunct to nutritional programs designed to improve the intake of essential nutrients.


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