不同环境湿度条件下萎凋叶色差变化分析  

Analysis on the Changes of Color of Withering Leaf in Different Environmental Humidity Conditions

作　　者：袁海波[1] 滑金杰[1] 邓余良[1] 许勇泉[1] 陈根生[1] 汪芳[1] 江用文[1] 尹军峰[1] 

机构地区：[1]中国农业科学院茶叶研究所/浙江省茶叶加工工程重点实验室/国家茶产业工程技术研究中心/农业部茶及饮料植物产品加工与质量控制重点开放实验室,浙江杭州310008

出　　处：《茶叶科学》2015年第6期551-558,共8页Journal of Tea Science

基　　金：农业科技成果转化资金项目(2011GB23260012);农业部重点实验室开放课题(2010K1003);中国农科院科技经费项目(201215)

摘　　要：采用人工气候箱设置不同萎凋湿度条件,研究萎凋过程中鲜叶的色差动态变化,并分析其内在规律。结果表明,3种湿度萎凋条件下茶叶的3个色度指标L、a、b随着萎凋时间的增加均存在显著变化,并且不同湿度间存在显著差异,但其差异随着萎凋时间的增加逐渐减小。本研究分析了3种湿度条件茶叶萎凋过程中的色差L、a、b及总体色差的变化规律,并且根据其表现说明RH70%可作为适宜的茶叶萎凋调控湿度。本研究结果可为完善茶叶加工过程中理化性质变化的理论基础提供参考。Different withering humidity conditionsare set withartificial climate box,the dynamic change of chromatic aberrationduring withering leaves and its inherent lawwere investigated.The results showed that, three chroma index L,a, bshowedsignificant changes with the increase of withering timeunder theconditions of three different humidity treatments, and there were significant differences between different humidity treatments,but its differencewas decreased gradually with theincrease of the withering time.The law of change of L, a. b and overall colorduringtea withering processwiththe conditions of three differen thumidities were analysed in this investigation. The results showed that 70% humiditywas regarded as the optimum humidity in the withering of tea. The results of this investigation provided the reference to the theoretical basis on the changes of physic-chemical properties inteaprocess.

关 键 词：湿度 萎凋叶 色差 

分 类 号：TS272.52[农业科学—茶叶生产加工]