Abdul Rahim, Afidah and Sumilo, Henny and Kassim, Jain and Ibrahim, Sani Separation And Identification Of Mangrove Condensed Tannin. Working Paper. Universiti Sains Malaysia.
Finely ground mangrove barks (Rhizophora apiculata) was submitted to successive solid-liquid extractions to produce condensed tannin of high purity, Depolymerization of condensed tannin in the presence of phloroglucinol nucleophiles in acidic dioxane and acidic ethanol were carried out. The separation of flavan-3-ols and their phloroglucinol adducts using reversed phase high performance liquid chromatography is reported The results showed that the condensed tannin is constituted of predominantly an extender unit and three terminal units, two of which have been identified as (+)-catechin and (-)-epicatechin.
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