外源接种黄曲霉污染普洱茶安全性研究

Abstract

Abstract: Yunnan Pu-erh tea was used as experimental material. Aspergillus flavus strains YM31882 were inoculated into Pu-erh tea, and the Pu-erh tea un-inoculated by strains was taken as the control. The storage conditions were (1) temperature 30℃, humidity 90%. (2) temperature 30℃, humidity 90% and (3) room temperature. The tea samples were storage for 7, 14, 21and 28 days respectively and then collected for yellow aspergillus toxin detection by LC-MS / MS. The results showed that none of the aflatoxin B1, B2, G1, G2 was detected in tested samples. indicating that storage process could avoid Aspergillus flavus contamination in Pu-erh tea, In summary, Pu-erh tea is safe to drink in this field.

Key words: Pu-erh tea, Aspergillus flavus, aflatoxin, safety

CLC Number:

LI Yali, XING Qianqian, TU Qing, ZHOU Hongjie. Study on the Safety of Pu-erh Tea Contaminated by Exogenous Aspergillus flavus[J]. Journal of Tea Science, 2017, 37(5): 513-522.

References 17

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Study on the Safety of Pu-erh Tea Contaminated by Exogenous Aspergillus flavus

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