Does Pu'er tea cause cancer?

After the article was published that Pu'er tea can cause cancer, many "tea fans" fell into "panic" for a while. However, it also encountered strong opposition from many experts in the tea field. "Pu'er tea can cause cancer because aflatoxin has been detected? Isn't this a question that has been refuted experimentally in 2012?" At the symposium that day, Zhou Hongjie, a professor at Yunnan Agricultural University, said that as early as 2012, the school The research team conducted simulated fermentation experiments and showed that during the fermentation process of Pu'er tea, although Aspergillus aflatoxin could grow and reproduce in the tea sample in the early stage, the growth of Aspergillus aflatoxin was significantly inhibited in the later stage. When the fermentation was terminated, no aflatoxin was produced. .

Gao Zhao, a professor at Yunnan University, also said that the growth conditions for aflatoxin are that the basis for the action of aflatoxin must contain mainly proteins, sugars, and fats, although Pu'er tea also contains a very small amount of Proteins, starches and lipids are present in small amounts and are converted during fermentation. Due to the lack of material conditions to transform aflatoxin, it is almost impossible for aflatoxin to appear in Pu'er tea. It's just that some low-quality tea leaves are polluted by the environment due to improper storage.

Shao Wanfang, a professor at Yunnan Agricultural University, pointed out, "Can drinking tea prevent cancer or cause cancer?" "The article cited random inspections by the Guangzhou Center for Disease Control and Prevention and research by graduate students at Nanchang University in order to understand the contamination of mycotoxins in Pu'er tea stored in wet warehouses. The samples were all wet warehouse Pu'er tea, not normal Pu'er tea. "It is irresponsible to quote quotes out of context."

"Without the representativeness of the sample, there will be no accuracy of the results." Shao Wanfang revealed that Yunnan Agricultural University will organize experts from multiple domestic scientific research units to work on Warehouses in key Pu'er tea storage areas across the country sampled 10,000 old teas to test whether there was aflatoxin in the tea leaves. Two months later, let scientific data speak for itself.