Available iron and zinc in major lean meat cuts and their contribution to the recommended trace element supply in Switzerland.
The objective of the present study was to analyze iron and zinc in major lean meat cuts in order to estimate the contribution of the average lean meat consumption in Switzerland (1995) for these trace elements. Iron, heme iron and zinc contents were analyzed in following muscles: pork (longissimus dorsi muscle and shoulder), beef (longissimus dorsi muscle and shoulder), veal (longissimus dorsi muscle) and chicken (breast and thigh). Beef and pork shoulder were the best sources of iron, heme iron and zinc. Pork and veal longissimus dorsi muscle and chicken were relatively poor in these trace elements. With an average daily lean meat consumption of 105 g, iron and zinc intake were about 1.1 mg/d and 3.8 mg/d, respectively. Recommendations for daily iron intake were met to 11% (men) and 7% (women) and for zinc to 25% (men) and 32% (women). Applying a modified Monsen model, the requirements for absorbed iron were met in the range of 10-30% and 7-20% for men and women, respectively. Taking into account a zinc absorption rate from meat of about 20-36%, the daily requirements for absorbed zinc were covered to 32-56%. In conclusion, the average amount of lean meat as consumed in Switzerland was high enough to be an important source of available iron and zinc, particularly for people with low iron and zinc status.
Leonhardt
M
M
Institute of Animal Sciences, Swiss Federal Institute of Technology, Zurich, Switzerland.
Kreuzer
M
M
Wenk
C
C
D000328:Adult; D004032:Diet; D005260:Female; D006418:Heme / Q000032:analysis; D006801:Humans; D019266:Iron, Dietary / Q000032:analysis*; D008297:Male; D008460:Meat / Q000032:analysis*; D013557:Switzerland; D014131:Trace Elements / Q000032:analysis*; D015032:Zinc / Q000032:analysis*
D019266:Iron, Dietary; D014131:Trace Elements; D006418:Heme; D015032:Zinc