Objective To determine the content of five essential trace elements namely iron,copper,zinc,selenium,and mo-lybdenum in chicken,eggs,chicken gizzards,and chicken liver samples sold in Anhui Province,and evaluate their nutrition-al value.Methods The contents of iron,copper,zinc,selenium and molybdenum in 237 chicken products sold in 16 cities of Anhui Province were determined by inductively coupled plasma mass spectrometry(ICP-MS)and the median and index of nutritional quality(INQ)were calculated.Results In 237 chicken,egg,chicken gizzard,and chicken liver samples,the median values for copper were 0.41,0.59,0.85 and 3.68 mg/kg,respectively.The median values for iron were 5.96,18.36,19.42 and 100.86 mg/kg,respectively.The median values for zinc were 11.62,12.42,25.41 and 35.83 mg/kg,re-spectively.The median values for selenium were 0.10,0.24,0.19 and 0.51mg/kg,respectively.The median values for mo-lybdenum 0.02,0.05,0.04 and 0.63mg/kg,respectively.The INQ of iron,copper,zinc,selenium and molybdenum in chicken were 0.57,0.77,1.75,2.51 and 0.37,respectively.The INQ of iron,copper,zinc,selenium and molybdenum in eggs were 1.96,1.25,2.20,6.81 and 1.05,respectively.The INQ of iron,copper,zinc,selenium and molybdenum in chick-en gizzards were 3.21,2.12,5.40,6.85 and 0.87,respectively.The INQ of iron,copper,zinc,selenium and molybdenum in chicken liver were 13.60,21.67,7.71,22.38 and 12.41,respectively.Conclusion Eggs have better nutritional value than chicken and can be used as a high-quality source of iron,copper,zinc,selenium and molybdenum in the diet.The nutritional value of chicken liver is superior to that of chicken gizzards,and it can be a good source of iron,copper,zinc,selenium and molybdenum supplementation.
Chicken productsEssential trace elementsNutrition index methodNutritional evaluation
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