云南省野生牛肝菌总汞含量测定分析及健康风险评估

发布时间：2018-01-15 09:54

  本文关键词：云南省野生牛肝菌总汞含量测定分析及健康风险评估　出处：《云南农业大学学报(自然科学)》2017年03期 　论文类型：期刊论文

  更多相关文章： 牛肝菌 健康风险 汞 重金属 食品安全

【摘要】：【目的】系统测定云南常见野生牛肝菌中总Hg含量,分析不同产地、种类及不同部位牛肝菌对Hg的富集规律和积累特征,评价野生牛肝菌的食用安全性,为野生食用菌产业的发展和食用安全评估提供数据依据。【方法】采用MA-2000直接测Hg仪—冷原子吸收光谱法测定牛肝菌菌盖、菌柄中总Hg含量,计算同一牛肝菌菌盖与菌柄总Hg含量比(QC/S),分析不同种类、部位牛肝菌中总Hg含量的差异和富集规律。根据中国《食品安全国家标准食品中污染物限量》(GB 2762—2012)规定的食用菌中Hg限量标准及联合国粮农组织和世界卫生组织(FAO/WHO)规定的每周Hg允许摄入量(provisional tolerable weekly intake,PTWI)现行标准,评价云南野生牛肝菌的食用安全性。【结果】同一子实体菌盖与菌柄的比值(QC/S)在0.3~8.8之间,95%牛肝菌样品菌盖、菌柄总Hg含量比(QC/S)≥1,表明多数牛肝菌菌盖对Hg的富集能力强于菌柄。本研究中多数野生牛肝菌菌盖、菌柄总Hg含量超过GB 2762—2012规定的食用菌中Hg含量限量标准(≤0.1 mg/kg);根据PTWI标准,假设成年人(60 kg)每周食用300 g新鲜牛肝菌,则多数样品Hg摄入量低于允许摄入量,无安全风险,而2013年采自玉溪大营街的美味牛肝菌,2012年采自楚雄永仁县的铜色牛肝菌及2014年采自玉溪新平的绒柄牛肝菌等少数样品Hg摄入量高于该标准。【结论】不同产地、种类牛肝菌菌盖、菌柄中总Hg含量存在明显差异,有少数牛肝菌总Hg含量超过相关标准,食用具有一定的潜在风险。
[Abstract]:[objective] to determine the content of total Hg in common wild Boletus in Yunnan, analyze the accumulation law and accumulation characteristics of boletus from different producing areas, species and different parts, and evaluate the edible safety of wild boletus. To provide data basis for the development of wild edible fungi industry and the evaluation of edible safety. [methods] the total Hg content in the cap and stalk of Boletus was determined by MA-2000 and cold atomic absorption spectrometry. The ratio of total Hg content of the same boletus cap to stalk was calculated and the different species were analyzed. The difference and enrichment Law of Total Hg content in Boletus sp. According to the Chinese National Standard for Food Safety, the limits of contaminants in Food (GB2762-2012). The prescribed limit of Hg in edible fungi and the allowable weekly Hg intake prescribed by the Food and Agriculture Organization of the United Nations (FAO) and the World Health Organization (WHO). Provisional tolerable weekly intake. The present standard of PTWI was used to evaluate the edible safety of wild Boletus in Yunnan. [results] the ratio of cap to stalk of the same fruiting body was between 0.3 and 8.8. The total Hg content of 95% boletus sample cap was higher than that of QC / S 鈮，

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