DIN ISO 14502-2-2007 绿茶和红茶的物质特征的测定.第2部分:绿茶中儿茶酚含量.高效液相色谱法

标准号：DIN ISO 14502-2-2007
中文标准名称：绿茶和红茶的物质特征的测定.第2部分:绿茶中儿茶酚含量.高效液相色谱法
英文标准名称：Determination of substances characteristic of green and black tea - Part 2: Content of catechins in green tea - Method using high-performance liquid chromatography (ISO 14502-2:2005 + Corrigendum 1:2006)
标准类型：X55
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：X55
国际标准分类号：67.140.10
引用标准：ISO 1572;ISO 3696-1987;ISO 7513
适用范围：This part of ISO 14502 specifies a high-performance liquid chromatographic(HPLC) method for the determination of the total catechin content of tea from the summation of the individual catechins .It is applicable to both leaf and instant green tea,and with precision limitations to black tea(see Annex A).Gallic acid and caffeine can also be determined by this method ,as can theogalllin and theaflavins.