**Investigations on the Thermal Decomposition of n‐Dodecylcyclopentane in the Gas Phase** In the thermal decomposition of n‐dodecylcyclopentane at 670 and 750°C in a laboratory tubular reactor mixtures of hydrogen and 57 and 113 hydrocarbons respectively are formed. The mixtures have been analyzed
Untersuchungen über den Transport von Kaffein in der Kaffeepflanze (Coffea arabica)
✍ Scribed by T. W. Baumann; H. Wanner
- Publisher
- Springer-Verlag
- Year
- 1972
- Tongue
- English
- Weight
- 675 KB
- Volume
- 108
- Category
- Article
- ISSN
- 0032-0935
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✦ Synopsis
Caffeine transport in small amounts from leaf to leaf was demonstrated by application of doubly-labelled caffeine. There was no translocation from the subtending leaves into the fruits, but heavy translocation from the pericaprp into the seed tissue could be shown. The results were confirmed by the analysis of grafts between caffeine-containing and caffeine-free species. The importance of the pericarp with respect to the caffeine content of the mature coffee bean is discussed.
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