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Coffee - Determination of caffeine content (Reference method) by ISO/TC 34/SC 15 Coffee is a reference work available to read on EtoBox.
What is Coffee - Determination of caffeine content (Reference method) about?
The method consists in extracting of the caffeine from a test portion, in an ammoniacal medium, successive purifying, with diethyl ether, on two chromatographic columns, the first in an alkaline medium, the second in an acid medium, followed by elution by chloroform. Spectrometric measurement of the eluate at the wavelength of maximum absorbance (in the ultraviolet region). A first figure shows examples of chromatographic columns. A second figure gives an example of spectrometric measurement.
Who reads Coffee - Determination of caffeine content (Reference method)?
It is typically read by working professionals who need an authoritative practice reference.
Common subject areas: medicine, law, business, engineering.
- Author
- ISO/TC 34/SC 15 Coffee
- Publisher
- ISO
- Published
- 1983
- Language
- EN
- Category
- reference
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