GB/T 5009.139-2003
Determination of caffeine in beverages (English Version)

Standard No.
GB/T 5009.139-2003
Language
Chinese, Available in English version
Release Date
2003
Published By
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status
 2015-05
Replace By
GB 5009.139-2014
Latest
GB 5009.139-2014
Replace
GB/T 16344-1996
Scope
This standard specifies the methods for the determination of caffeine content in cola beverages, coffee, tea and their products - ultraviolet spectrophotometry and high performance liquid chromatography (HPLC). This standard applies to the determination of caffeine in cola beverages, coffee, tea and their products. The detection limit of ultraviolet method in this standard: 3mg/L for cola drinks; 5mg/100g for coffee, tea and their solid products; 5mg/L for liquid products of coffee and tea. The detection limit of HPLC method in this standard: 0.72mg/L for cola drinks; 1.8mg/100g for tea, coffee and their products.

GB/T 5009.139-2003 history

GB/T 5009.139-2003 Determination of caffeine in beverages has been changed from GB/T 16344-1996 Method for determination of caffeine in beverages.

GB/T 5009.139-2003 Determination of caffeine in beverages was changed to GB 5009.139-2014 Determination of caffeine in national food safety standard beverages.

Determination of caffeine in beverages

GB/T 5009.139-2003 -All Parts

GB/T 5009.1-2003 Methods of food hygienic analysis-Physical and chemical section--General principles GB/T 5009.10-2003 Determination of crude fiber in vegetable foods GB/T 5009.100-2003 Method for analysis of hygienic standard of products of foamed polystyrene for food packaging GB/T 5009.101-2003 Determination of antimony in polyester resin and products for food containers and packaging materials GB/T 5009.102-2003 Determination of phoxim pesticide residues in vegetable foods GB/T 5009.103-2003 Determination of methamidophos and acephate pesticide residues in vegetable foods GB/T 5009.104-2003 Determination of carbamate pesticide residues in vegetable foods GB/T 5009.105-2003 Determination of chlorothalonil residues in cucumber GB/T 5009.106-2003 Determination of permethrin residues in vegetable foods GB/T 5009.107-2003 Determination of diazinon residues in vegetable foods GB/T 5009.108-2003 Determination of diaethylstilbestrol in flesh GB/T 5009.109-2003 Determination of isocarbophos residues in orange GB/T 5009.11-2003 Determination of total arsenic and abio-arsenic in foods GB/T 5009.110-2003 Determination of cypermethrin,fenvalerate and deltamethrin residues in vegetable foods GB/T 5009.111-2003 Determination of deoxynivalenol in cereal and cereal products GB/T 5009.112-2003 Determination of quinalphos residues in rice and orange GB/T 5009.113-2003 Determination of thiocyclam residues in rice GB/T 5009.114-2003 Determination of bisultap residues in rice GB/T 5009.115-2003 Determination of tricyclazole residues in rice GB/T 5009.116-2003 Determination of oxytetracyline,tetracyline and chlortetracycline residues in meat(HPLC) GB/T 5009.117-2003 Method for analysis of hygienic standard of edible soybean meal GB/T 5009.118-2008 Determination of T-2 toxin in cereals GB/T 5009.119-2003 Determination of diaminomethylbezen of complex for food packaging material GB/T 5009.12-2003 Determination of lead in foods GB/T 5009.120-2003 Determination of sodium propionate and calcium propionate in foods GB/T 5009.121-2003 Determination of dehydroacetic acid in foods GB/T 5009.122-2003 Determination of residual ethylidene dichloride in polyvinyl chloride resin and product for food container and packaging material GB/T 5009.123-2003 Determination of chromium in foods GB/T 5009.124-2003 Determination of amino acids in foods GB/T 5009.125-2003 Determination of 6-caprolactam in nylon 6 resin and its products GB/T 5009.126-2003 Determination of triadimefon residues in vegetable foods GB/T 5009.127-2003 Determination of germanium in polyester resin and products for food packaging GB/T 5009.128-2003 Determination of cholesterin in foods GB/T 5009.129-2003 Determination of ethoxyquin residues in fruits GB/T 5009.13-2003 Determination of copper in foods GB/T 5009.130-2003 Determination of fomesafen residues in soybeans and cereals GB/T 5009.131-2003 Determination of phosmet residues in vegetable foods GB/T 5009.132-2003 Determination of atrazine residues in foods GB/T 5009.133-2003 Determination of chlorotoluron residues in grains GB/T 5009.134-2003 Determination of molinate residues in rice GB/T 5009.135-2003 Determination of chlorbenzuron residues in vegetable foods GB/T 5009.136-2003 Determination of quintozene residues in vegetable foods GB/T 5009.137-2003 Determination of antimony in foods GB/T 5009.138-2003 Determination of nickel in foods GB/T 5009.139-2003 Determination of caffeine in beverages


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