Extraction and Periodate Cleavage Studies of the Tannin Obtained from Pinus caribuea, Morelet

Alcoholic and aqueous extraction methods applied to Pinus caribaea are presented and compared. Through the measurement of a quantitative consumption of a specific glycol cleavage reagent, sodium metaperiodate, further evidence is presented in support of the suggestion that an alpha-glycol linkage exists in this natural phlobatannin molecule.