生、熟普洱茶茶多酚的含量测定及抗氧化性评价目 录摘 要I-II1 前言.........................................................................................................................12 仪器与材料.............................................................................................................32.1 仪器......................................................................................................................32.2 材料......................................................................................................................33 实验方法.................................................................................................................43.1 溶液的制备..........................................................................................................43.2 测定方法..............................................................................................................53.3 计算方法..............................................................................................................63.4 方法学考察..........................................................................................................64 普洱茶中茶多酚提取工艺.....................................................................................74.1 单因素考察..........................................................................................................74.2 响应面法..............................................................................................................95 结果.......................................................................................................................135.1 供试品溶液溶液的制备....................................................................................135.2 样品茶多酚含量测定及其结果........................................................................145.3 样品 DPPH 清除率测定及其结果....................................................................146 讨论....
