茶树花热风干燥工艺研究  

Study on hot air drying technology of tea plant flower

作　　者：杨玉明 王敏红 黄阿根[3] 

机构地区：[1]上海市静安区业余大学,上海200040 [2]昆山市产品质量监督所,江苏昆山215300 [3]扬州大学食品科学与工程学院,江苏扬州225127

出　　处：《扬州大学学报（农业与生命科学版）》2011年第2期81-85,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：江苏省科技支撑计划项目(BE2008333)

摘　　要：采用GZ-1型干燥试验装置,在不同温度和风速条件下进行茶树花热风干燥动力学试验,获得茶树花干燥水分曲线、干燥速率曲线,分析风温、风速对干燥质量、干燥速度的影响;并通过不同干燥条件下茶树花的感观指标、多酚含量对比分析,确定茶树花较佳干燥工艺。结果表明：较佳干燥工艺为温度60~70℃、风速2.5 m.s-1,干燥至干基含水量小于1.15 kg.kg-1后,风速调至0.8 m.s-1,时间70 min,干花含水率≤12%。该研究为规模化茶树花干制技术提供了科学依据。Tea flower [Camellia sinensis（L.） O.Kuntze] is one of the abundant resources.But it is rarely utilized for further applications.The hot air drying kinetics experiment on tea plant flower was studied under different air temperatures and wind speed in GZ-1 dryer.The moisture content and drying rate curves were obtained and the influence of air temperature and wind speed on the quality of drying and drying speed were analyzed.The feasible drying condition（temperature-60-70 ℃-,air rate 2.5 m·s-1,dry until water content under 1.15 kg·kg-1,then use air rate 0.8 m·s-1 for 70 min until the water content under 12%） was found through comparison on sensory index of the flower and polyphenol content under different drying conditions.The result of this study may provide a basis for the large-scale drying technique on the tea plant flower.

关 键 词：茶树花 热风干燥 多酚含量 感观指标 

分 类 号：TS205.1[轻工技术与工程—食品科学]