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
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)
购买全文，请联系:
- 标准号
- DIN ISO 14502-2:2007
- 发布
- 2007年
- 发布单位
- 德国标准化学会
- 当前最新
- DIN ISO 14502-2:2007
- 引用标准
- ISO 1572 ISO 3696:1987 ISO 7513
- 被代替标准
- DIN ISO 14502-2:2006
- 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.