U.s.p. caffeine extraction and purification

C - Chemistry – Metallurgy – 07 – D

Patent

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260/242.4

C07D 473/12 (2006.01)

Patent

CA 2019145

B ABSTRACT The invention allows aqueous decaffination waste to be treated without the use of solvents to yield U.S.P. Quality Caffeine. The present use of a considerable quantity of activated carbon is also reduced to a minimum by using a relatively cheap insoluble oxide to adsorb colour and impurities.

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