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Preliminary Study of Metal in Yak (Bos grunniens) Milk from Qilian of the Qinghai Plateau

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Abstract

63 samples of yak milk were analyzed by the method of ICP-AES of metal elements for aluminum, cadmium, silver and chromium which can reveal the exposed level around yak farm. The metal elements of yak milk were compared to reference data for cow milk, sheep milk, buffalo milk and goat milk. In addition, the concentration was compared to PTWI (provisional tolerable weekly intake) established by the JECFA (WHO/FAO) for metal intake/body weight per week of cadmium, aluminum, and chromium level was compared to EVM (Expert Group on Vitamins and Minerals) guidance level, while the threshold of silver was lacking according to the authority standard. Analysis of regression correlation was calculated between Cd and Co, Cr, Cu, Ag, Al, Mn.

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Acknowledgments

Special thanks to Prof. Adriana Ianieri for giving gracious suggestions. We thank the station of Animal Husbandry and Veterinary Medicine of Qilian County for having kindly cooperated in collecting the samples and the Department of Qinghai Science and Technology of Qinghai for funding this research.

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Authors and Affiliations

  1. Animal Science Department, College of Animal Husbandry and Veterinary Medicine, Qinghai University, Ning Da Road 251, Xining, 810016, Qinghai, China

    Wan-cheng Sun & Yi-hao Luo

  2. Station of Animal Husbandry and Veterinary Medicine, Yeniu Town, Qilian, 810400, Qinghai, China

    Hai-qing Ma

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  1. Wan-cheng Sun
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  2. Yi-hao Luo
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  3. Hai-qing Ma
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Correspondence to Wan-cheng Sun.

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Sun, Wc., Luo, Yh. & Ma, Hq. Preliminary Study of Metal in Yak (Bos grunniens) Milk from Qilian of the Qinghai Plateau. Bull Environ Contam Toxicol 86, 653–656 (2011). https://doi.org/10.1007/s00128-011-0282-3

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  • DOI: https://doi.org/10.1007/s00128-011-0282-3

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