不同粒径绿茶粉粉体表征与物理性质的研究  

Study on the characterization and physical property of green tea powder with different particle sizes

作　　者：舒阳[1,2] 杨晓萍[1] 

机构地区：[1]华中农业大学园艺林学学院茶学系,湖北武汉430070 [2]湖北孝感国家高新区管委会,湖北孝感432000

出　　处：《食品工业科技》2016年第22期164-167,共4页Science and Technology of Food Industry

基　　金：中央高校基本科研业务费专项资金资助项目(2013PY091)

摘　　要：主要对行星式球磨机制备的不同粒径茶粉的粉体表征和物理性质展开研究。结果表明,随着粉体粒径从564.24μm减小到20.84μm,粉体分布逐渐均匀,茶粉的休止角、膨胀力、溶解性增加,堆积密度、持水力减小,持油力呈先增后降的趋势,色度值得以改善。综合考虑以球磨粉碎7 h(D50=20.84μm)的绿茶粉物理性质较优,有效提高了其商品应用价值,具有较大的开发潜力。The characterization and physical property of green tea powder with different particle sizes prepared by a planetary ball mill were studied. The results showed that, with the decreasing particle size of tea powder from 564.24 μm to 20.84 μm,the powders were distributed evenly, the angle of repose, swelling power and solubility of the powders were increased, the bulk density and the water-holding capacity were decreased, the oil-holding capacity showed a trend of increasing first and then decreasing, and their chromaticity values were improved. It was concluded that the physical property of green tea powder（D50 =20.84 μm）after ？ h of grinding was excellent, and the commercial value were enhanced.

关 键 词：茶粉 粒径 微观形貌 物理性质 

分 类 号：TS272.5[农业科学—茶叶生产加工]