Tea doesn't have to suffer from the problem of "exceeding the limit of rare earth"
recently, the national health and Family Planning Commission of China released the interpretation of the national standard for food safety mycotoxin limit in food (GB 27 investment scope can be large or small) and the national standard for food safety pollutant limit in food (GB), Article 10 of which stipulates that the requirement of the limit of rare earth in plant foods should be abolished
the new regulations will be implemented on September 17
the interpretation shows that according to the risk assessment of dietary rare earth element exposure of Chinese residents, in the 90 day oral gavage test of rats with representative Rare Earth Elements Lanthanum, cerium and yttrium, except that high doses of lanthanum affect animal weight gain and food intake, no obvious subchronic toxicity of lanthanum, cerium and yttrium was found
from the current level of rare earth elements in food, except for the relatively high content of rare earth elements in tea, edible fungi and algae, the content of rare earth elements in other common foods is at a low level. No matter the general population or the potentially high exposed population (such as adults who drink compressed tea for a long time and residents of rare earth mining areas), the average daily intake of rare earth elements from the diet does not exceed 5% of the temporary daily allowable intake of lanthanum (representing total rare earth elements). It can be considered that the current dietary exposure of rare earth elements will not pose a potential hazard to health. Based on the risk assessment results of dietary rare earth elements exposure of Chinese residents, the first national food safety standard review committee canceled the requirement of rare earth limit in plant-based foods. In addition, the regulation was issued on March 17, 2017 and will be officially implemented on September 17, 2017
the withdrawal of the limit standard is beneficial to the export of tea
this means that the problem of "rare earth exceeding the standard" of 22 projects in Tongji, which has been plagued by Chinese tea enterprises for 26 years, has been solved. It is understood that rare earth elements are composed of 15 lanthanide elements and 17 elements, including scandium (SC) and yttrium (y), which have similar properties to lanthanide elements, of which lanthanum, cerium and yttrium are relatively high. According to the literature, rare earth may have bioabsorption and enrichment, accumulation of organs and tissues, immunotoxicity and reproductive toxicity. The understanding of rare earth toxicity has changed from "negligible" to "long-term low-dose exposure toxicity"Therefore,
the main reason for China is that its cutting tools wear very quickly. Ruan Jianyun, deputy director of the Tea Research Institute of the Academy of Agricultural Sciences and Secretary General of the China tea society, said that, like all other crops, it is inevitable for tea trees to absorb various elements, including rare earth elements, from the soil. Lu Shuxun, President of Dongguan tea industry association, pointed out that the revocation of rare earth limit standards is conducive to tea exports. In addition, the withdrawal of the rare earth limit standard does not mean that food safety is underestimated, nor does it mean that the safety of rare earth elements can be ignored in tea production. In the process of tea production and processing, we should still pay attention to cleaning