SUMMARY
Iron, zinc and copper content of foods commonly consumed in Mexico
Nutrient composition in foods is necessary for the determination of nutrient intake. Food composition tables used for dietary studies in Mexico do not have information of zinc. iron and copper; when present the values have been extrapolated from laboratory analysis carried out with foods in other countries and regions of the world. In this study zinc, iron, and copper content of 104 plant foods and 32 animal foods was determined. The procedure used was atomic absorption spectrophotometry for the minerals. Foods were grouped into cereals, vegetables, fruits, legumes and animal foods. Zinc content ranged from 0.018 mg/l00g for strawberry to 9.193 mg/l00g for beef. Iron content ranged from 0.113 mg/l00g for yogurth to 19.82 mg/l00g for a comercial cereal which had minerals added during processing. In some foods copper was not Found and the highest content was 3.371 mg/l00g in beef liver. This study has provided information on zinc, iron and copper content of the most commonly consumed foods in Mexico.

Key words: Copper, iron, zinc, food composition, Mexico.



Recibido: 07/10/1998
Aceptado: 15/04/1999

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