JIA Yanlong1, SUN Jialong1, LIN Keyue1, ZENG Lingling1, LIANG Qin1, XING Qian1, NING Zengping2
（1. School of Resources and Environmental Engineering, Guizhou Institute of Technology, Guiyang 550003；
2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China）
Abstract: Edible mushrooms (EMs) are known as a kind of green and healthful food, but also been identified as one kind of food with the capacity of accumulating potential toxic elements (PTEs). However, more detailed knowledge on PTEs contents in EMs and their health risk is limited. In this present work, a total of 153 samples were collected from urban markets in Guiyang City, and the contents of heavy metals were determined. The results indicated that cadmium was marked with the highest frequency of exceeding food standard. The content of heavy metals in Dictyophora indusiata and Agaricus blazei samples was much higher than that in other samples. Specially, the frequency of exceeding food standard was 100% by arsenic, cadmium and mercury, and 17% by lead in Dictyophora indusiata samples. In Agaricus blazei samples, the frequency of exceeding food standard was 92.8%, 92.9%, 92.8% and 64.3% respectively by arsenic, cadmium, mercury and lead. Interestingly, no obvious trend for the transfer coefficients of heavy metals was observed between pileus and stipe in the samples, but the transfer coefficients in Pleurotus eryngii and Pleurotus ostreatus samples were higher than others, especially than Agaricus blazei samples. Furthermore, all the health risk indexes in the samples were lower than threshold value. Furthermore, no obvious trend for the transfer coefficients of heavy metals was observed between pileus and stipe in the samples. The findings may provide basic knowledge and guidelines for the sound development of edible mushroom in Guizhou Province and the diet habit for the local residents in Guiyang City.
Key word: Edible mushroom, toxic heavy metals, risk assessment, Guiyang
EARTH AND ENVIRONMENT Vol.49, No.4, Tot No.342, 2021, Page 428-435