By Valerie DeBenedette
ISBN-10: 0894907417
ISBN-13: 9780894907418
Examines the historical past, actual results, and social features of caffeine, the main ordinary drug on this planet. summary: Examines the background, actual results, and social features of caffeine, the main commonplace drug on this planet
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1998 CRC Press LLC 2. Theobromine Theobromine levels in tea are considerably lower than those of caffeine. Little has been reported with regard to effect of variation in cultural procedures. 20%32, 33 on a dry-weight leaf basis. 3. 04% on a dry-weight leaf basis. Little is known about the causes of variation in experimental reports, and may be attributed to experimental error or degradation of caffeine as a result of experimental procedure. 32 4. Biosynthesis Caffeine had been thought to be principally synthesized during the withering stage of freshly plucked tea leaves,34 although it is probably synthesized throughout the life of the plant.
52. , Gas chromatographic analysis of theophylline in human serum, Biochem. , 11,26,1974. , New approach to derivatization and gas chromatographic analysis of barbiturates, Clin. , 20,192,1974. 54. by isothermal gas-liquid chromatography on 3% SP2250-DB, J. Anal. , 2,3,1978. 55. , Gas chromatographicmass spectrometric quantition of tri-, di- and monomethylxanthines and uric acid from hepatocyte incubation media, J. , 532,261,1990. 56. , Determination of purine bases and nucleosides by conventional and microbore high performance chromatography and gas chromatography with an ion trap detector, J.
8. , The spectrophotometric determination of caffeine and theobromine in cocoa and cocoa products, Rev. Int. , 25,7,1970. 9. P. , Differential spectrophotometric determination of caffeine in soluble coffee and drug combinations, JAOAC, 51,573,1968. 10. C, 1980, p 234. 11. M. , Determination of caffeine using N-chloro-ptoluene-sulfonamide, Analyst, 106,729,19811 12. , Determination of caffeine by UV spectrometry in various types of coffee: green coffee and natural roasted coffee, Anales de Bromatologia, 42,241,1990.
Caffeine by Valerie DeBenedette
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