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A new contribution to the study of polyphenolic compounds present in alcoholic extracts of myrtus communis seeds i. water soluble fraction



A new contribution to the study of polyphenolic compounds present in alcoholic extracts of myrtus communis seeds i. water soluble fraction



Anales de la Real Academia de Farmacia 52(2): 355-364



Myrtus communis L. seeds are rich in compounds of the polyphenolic type, many of which are tannins. For their study a previous fractionation was made, according to Hagerman and Butler, the first athanolic extraction being omitted. Final yield was 85%. From the methanolic extract a highly purified product was obtained that contained two types of tannins ellagitannins and condensed proanthocyanidins, which after hot mineral acid treatment produced cyanidin. Quantitative evaluation was accomplished through protein precipitation, galloyl ester oxidation by potassium iodatum, ellagitannins reactions with nitrous acid in the absence of oxygen, and proanthocyanidins determination by the Bate-Smith and vanillin methods and the results obtained were compared.

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Accession: 004593383

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