摘要
为探明陈香茶饮用的安全性,以不同产地的陈香茶为原料,采用国家标准测定方法对其主要的品质安全性指标进行评价和分析。结果表明,普洱散茶菌落总数最多,在本研究范围内未检测出黄曲霉素、致泻大肠埃希氏菌、大肠杆菌、沙门氏菌;有1个样品检出金黄色葡萄球菌;农药残留符合GB2763—2005食品中污染物限量的要求;重金属铅的含量在0.38～4.70mg/kg,符合茶叶卫生标准和食品中污染物限量要求;总灰分含量范围在5.42%～7.27%,水不溶性灰分含量在2.1%～3.81%,水溶性灰分占总灰分的50%以上,酸不溶性灰分在0.139%～0.793%,说明茶叶品质较好。总体来看,陈香茶的安全性是可靠的。
In order to prove the quality and safety of Chenxiang Tea,using Chenxiang Tea produced in different place as materials.The research appraised and analyzed the main quality and safety index of Chenxiang Tea by national standard methods.The result showed that Pu ＇ er scattered tea contained more total numbers of colony.Aspergillus flavus,diarrhoea causative Escherichia,Escherichia coli,Salmonella were not detected in this research and Staphyloccocus aureus was detected only in one sample.Pesticide residues accorded with GB 2763 — 2005 maximum levels of contaminants in foods.The content of heavy metal Pb was in the range of 0.38-4.70 mg/kg,according with standards for tea quality and standards for maximum levels of contaminants in foods.The total ash content was in the range of 5.42%-7.27% and the water-unsoluble ash was in the range of 2.1%-3.81%.The water-soluble ash accounted for 50% of total ash.The acid-unsoluble ash content was in the range of 0.139%-0.793%,which illustrated the less mud and sand in tea and better quality.As a whole the safety of Chenxiang Tea was credible.
出处
《中国农学通报》
CSCD
北大核心
2011年第29期92-96,共5页
Chinese Agricultural Science Bulletin
基金
国家茶叶产业技术体系项目"红茶育种"(CARS-23)
广东省农业科学院院长基金项目"陈香茶质量评价体系的研究与建立"(20090107)
关键词
陈香茶
品质
安全性
Chenxiang Tea
quality
safety
