咖啡碱 标准查询与下载
共找到 150 条与 咖啡碱 相关的标准，共 10 页
Coffee. Determination of caffeine content.
本标准规定了用高效液相色谱法、紫外分光光度法测定荼叶中咖啡碱的仪器和用具、试剂和溶液、操作方法及结果计算的方法”本标准适用于茶叶中咖啡减的测定'也适用于固态速溶茶咖啡碱的测定
Tea.Determination of caffeine content
本标准规定了用高效液相色谱法、紫外分光光度法对茶叶中咖啡碱测定的原理、仪器和用具、试剂和溶液、操作方法及结果计算方法。 + 本标准适用于茶叶中咖啡碱的测定
Tea--Determination of caffeine content
本标准适用于茶叶中咖啡碱的测定。在茶叶水浸出物中除去叶蛋白、茶多酚等物质后，留下的生物碱其测定波长为274nm者，均称茶叶咖啡碱
Determination of tea and caffeine
이 규격은 커피의 함량 측정 기준법에 대하여 규정한다. 이 방법은 커피 원두, 볶은 커피
Coffee－Determination of caffeine content(Reference method)
The method consists in extracting of the caffeine from a test portion, in an ammoniacal medium, successive purifying, with diethyl ether, on two
Coffee; Determination of caffeine content (Reference method)
Coffee. Determination of caffeine content. Method using high-performance liquid chromagraphy.
Method for the determination of caffeine in tea for import and export
The document specifies a rapid method for determination of the coffein content of coffee using HPLC. With the new edition the scope of the document
Analysis of coffee and coffee products - Determination of coffeine content - Part 2: HPLC rapid method
This International Standard specifies a method for the determination by high-performance liquid chromatography (HPLC) of the caffeine content of teas
Tea and instant tea in solid form - Determination of caffeine content - Method using high-performance liquid chromatography
Near-infrared spectroscopic determination of moisture, tea polyphenols and caffeine content in tea polyphenol products
Near-infrared spectroscopic determination of moisture, tea polyphenols and caffeine content in solid instant tea
本标准规定了咖啡中葫芦巴碱、绿原酸和咖啡因的高效液相色谱测定方法。 本标准适用于生咖啡、烘焙咖啡和速溶咖啡等咖啡及其固体和液体饮料制品中葫芦巴碱、绿原酸和咖啡因的同时测定。 本方法的检出限：葫芦巴碱0.50 mg/kg，绿原酸为0.70 mg/kg，咖啡因0.50
Determination of trigonelline, chlorogenic acid and caffeine in coffee—high performance liquid chromatography
En la presents norma se describe el método para deter minar el contenido de teobromina y cafsína en el ca— cao y sus preparaciones
Regulations on caffeine and theobromine content in cocoa beans
Determination of trigonelline in coffee and products by high performance liquid chromatography
