Effect of 60Co-γIrradiation Treatment on Quality of Anhua Black Tea
To improve the quality of Anhua black tea in Hunan province, the effect of 60Co-γ irradiation treatment on quality of Anhua black tea was studied, in which the contents of main chemical components of Anhua black tea irradiated by different irradiation doses were measured. The results showed that Anhua black tea quality can be improved by gamma irradiation treatment;the contents of thealfavins and theanine in Anhua black tea increased signiifcantly when irradiation dose was within 0~4 kGy;when irradiation dose was within 0~10 kGy, the content of thearubigins decreased ifrst and then increased and the TRS/TFS increased ifrst and then decreased;moreover, the contents of tea polyphenols, amino acids, alkaloid and the total extracts of Anhua black tea had no signiifcant influences by irradiation treatment.
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