摘要
以不同采收季节的油橄榄茶为试材,测定其多种化学成分并进行对比,确定油橄榄茶的最佳采收季节。结果表明,油橄榄茶中总黄酮和橄榄苦苷的含量随着季节变化呈先下降后增加的趋势,且总黄酮在秋茶中含量较高,橄榄苦苷在春茶中含量较高;总多酚含量呈下降趋势,且春茶中含量较高;VE含量呈现先升高后下降的趋势,夏茶中含量较高;重金属元素的变化规律不同,铅元素在秋茶中含量较低,镉元素在春茶中含量较低,铬元素在春茶和秋茶中含量均较低,总体来说,油橄榄茶的春茶和秋茶质量较好。通过探究油橄榄茶中多种成分的季节变化规律,采用灰色关联度分析方法对有效成分与有害重金属元素进行综合分析,确定油橄榄茶的最佳采收季节为春季。
The chemical components of olive teas in different harvesting seasons were determined and compared to confirm the best harvesting season of olive tea.The results showed that,the contents of total flavonoids and oleuropein decreased firstly and then increased with the change of seasons,and the content of total flavonoids in autumn tea was higher,while the content of oleuropein in spring tea was higher.The total polyphenols showed decrease trend and was higher in spring tea,VE content firstly increased and then declined,and the VE content in summer tea was higher.The changing rules of heavy metal elements were different,and lead content was lower in autumn tea,cadmium content was lower in spring tea,chromium was lower in both spring tea and autumn tea.In general,the quality of spring and autumn tea was better than winter tea.By exploring the seasonal variation rule of various components in olive tea,the effective components and harmful heavy metal elements were comprehensively analyzed by grey correlation analysis method,which suggested spring was the optimum harvesting season of olive tea.
作者
刘红梅
方成鑫
郭力
候绍金
吴传明
叶强
LIU Hong-mei;FANG Cheng-xin;GUO Li;HOU Shao-jin;WU Chuan-ming;YE Qiang(College of Pharmacy,Chengdu University of Traditional Chinese Medicine,The Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine,The Breeding Base of State Key Laboratory of Resources Systems Research and Development Utilization of Chinese Herbal Medicines Constructed by The Ministry of Science and Technology of the PRC,Chengdu 611137,China;Horticulture Research Institute of Jinhua Liangshan,Liangshan 615000,China;Forestry Bureau of Mianning Liangshan,Liangshan 615000,China)
出处
《保鲜与加工》
CAS
北大核心
2019年第1期127-132,共6页
Storage and Process
基金
凉山州技术研究开发与推广应用项目(16YYJS0029)
关键词
油橄榄茶
橄榄苦苷
总黄酮
总多酚
VE
重金属
采收季节
olive tea
oleuropein
total flavonoids
total polyphenols
VE
heavy metals
harvest seasons
