Method for preparing aloin by extraction

Details Method for preparing aloin by extraction Method for preparing aloin by extraction

C - Chemistry, Metallurgy

07

H

C07H 7/04 (2006.01)

Patent

CA 2334656

The invention concerns a method for preparing aloin which consists in extracting from a substance containing aloe, in particular the yellow sap of aloe or a derived product, in the presence of an aliphatic diol or triol with low molecular weight, for instance glycerol or a glycol, followed by a purification by crystallisation in an alcohol. The invention is useful for industrial preparation of aloin.

L'invention concerne un procédé de préparation d'aloine. Le procédé de préparation consiste à effectuer une extraction à partir d'une substance contenant de l'aloe, en particulier la sève jaune d'aloe ou un produit dérivé, en présence d'un diol ou triol aliphatique à bas poids moléculaire, par exemple le glycérol ou un glycol, suivie d'une purification par cristallisation dans un alcool. Application à la préparation industrielle d'aloine.

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