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Metabolism and Analysis of Caffeine and Other Methylxanthines in Coffee, Tea, Cola, Guarana and Cacao

  • Chapter
Analysis of Nonalcoholic Beverages

Part of the book series: Modern Methods of Plant Analysis ((MOLMETHPLANT,volume 8))

Abstract

The widespread natural occurrence of purine alkaloids — caffeine and other methylxanthines such as theobromine and theophylline (Fig. 1) — in a variety of plants undoubtedly played a major role in the long-standing popularity of caffeine-containing products, especially nonalcoholic beverages and foods (coffee, tea, soft drinks, cocoa and chocolate products, etc.). More than 60 plant species throughout the world have been identified as containing caffeine; the more common are from the genera Coffea, Camellia, Cola, Paullinia, Ilex, and Theobroma (Kihlman 1977). It is not claimed that this summary is complete, since almost every year corrections are made or new plants are found to contain caffeine; for instance, the occurrence of caffeine in citrus flowers and leaves has been reported recently (Stewart 1985). Further, the list of purine alkaloids has recently been extended by the discovery of three methyluric acids (Fig. 1) in the genus Coffea (Pe-termann and Baumann 1983).

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  1. T. Suzuki
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  2. G. R. Waller
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Editors and Affiliations

  1. Goldberglein 7, D-8520, Erlangen, Germany

    Hans-Ferdinand Linskens

  2. Department of Biochemistry Waite Agricultural Research Institute, University of Adelaide, Glen Osmond, S.A., 5064, Australia

    John F. Jackson

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Suzuki, T., Waller, G.R. (1988). Metabolism and Analysis of Caffeine and Other Methylxanthines in Coffee, Tea, Cola, Guarana and Cacao. In: Linskens, HF., Jackson, J.F. (eds) Analysis of Nonalcoholic Beverages. Modern Methods of Plant Analysis, vol 8. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83343-4_11

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