【摘要】 为提高千两茶品质,研究60 Co-γ辐照处理对千两茶品质的影响。将千两茶经不同辐照剂量处理后,测定影响其品质的主要化学组分含量。结果表明:辐照剂量在0~4kGy时,千两茶中茶多酚、咖啡碱、茶碱及水浸出物总量无显著变化;游离氨基酸总量和儿茶素总量显著增加;可可碱和微生物数量显著降低,4kGy时菌落总数、大肠菌群、霉菌和酵母菌数均降为最低值。说明γ辐照处理可提高千两茶品质。更多还原

【Abstract】 To improve the quality of Qianliang tea,the effect of quality of Qianliang tea by 60Co gamma irradiation treatments was studied.The contents of main chemical components of Qianliang tea irradiated by different irradiation dose were measured.The results showed that the quality of Qianliang tea could be improved by gamma irradiation processing.Within the scope of 0 ~ 4kGy irradiation dose,the content of tea polyphenols,caffeine,theophylline and the total extract had no significant change,and the content of free amino acids and catechins increased significantly.Meanwhile the contents of theobromine and microorganisms reduced significantly,and when the irradiation dose was 4kGy,and coliform bacteria,fungi and total number of colonies was reduced to a minimum value.更多还原