The effect of meat cuts and thermal processing on selected mineral concentration in beef from Holstein-Friesian bulls.
Level 5 - mechanism / opinion, no new human data
Laboratory food science study on animal tissue samples (design analogy).
PubMed 25828160 · doi:10.1016/j.meatsci.2015.03.011
What was done
The authors analyzed concentrations of potassium, sodium, phosphorus, magnesium, zinc, total iron, and heme iron across nine skeletal muscle cuts and liver from Holstein-Friesian bulls. They also assessed the effects of thermal processing (grilling, roasting, and frying) on mineral concentrations in longissimus dorsi muscle compared to raw meat.
What was found
Mineral concentrations varied significantly by tissue type and across different muscles. Zinc showed the greatest variation among muscles (3.5 to 6.9 mg/100 g fresh weight), followed by iron (1.7 to 2.3 mg/100 g fresh weight). The heme iron to total iron ratio averaged 74% with no significant differences among muscles. Thermal processing of longissimus dorsi muscle increased the content of most studied minerals by 6% to 26% compared to raw meat, while sodium levels decreased by 16% to 33%.
Why it matters
This study provides specific mineral profile data across different beef cuts and quantifies how standard cooking methods alter mineral density per fresh weight unit.
Limits
The abstract does not report sample sizes (number of bulls or meat samples analyzed). Cooking tests were limited to a single muscle type (longissimus dorsi), and specific numerical concentrations for potassium, sodium, phosphorus, and magnesium were not reported in the abstract.
Cited by
- supports One pound of meat contains approximately 100 milligrams of magnesium.