Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data Control Number 321312 Date and Time of Latest Transaction 20180522074311.AM General Information 180522s |||||||||b ||00||| Cataloging Source STII-DOST Language Code eng Local Call Number Fil(S) T1 N21 13/2 1988 Main Entry - Personal Name Unalivia, Felicisima D.   Brandares, Minda Flor T.   Bonifacio, Teresita S.   Anzaldo, Felicidad E. Title Statement Isolation and purification of tannin from the bark of Psidium guajava by Felicisima D. Unalivia, Minda Flor T. Brandares, Teresita S. Bonifacio, Felicidad E. Anzaldo Physical Description 11-22 graphs, pictures, tables Summary, Etc.      Tannin was isolated and purified from the dried bark of Psidium guajava L. by cold percolation using ether: alcohol (4:1) as solvent. The process produced 0.8 –1.2% of purified isolate. When subjected to physical and chemical analyses including thin layer chromatography, it showed qualitatively the presence of tannin.      The tannin extract from guava bark has been found to contain phenols, alcohols, ketones, aldehydes, carboxylic acids and aromatic hydrocarbon through IR spectrum analysis.      The purified tannin was proven therapeutically active as indicated by the in-vitro testing with microorganisms E. coli and M, aureaus. (Author's abstract) Subject Added Entry - Topical Term Chemistry   Psidium guajava   Alcohol   Tannin extract   Phenols   Ketones   Aldehydes   Carboxylic acids   Aromatic hydrocarbons           Physical Location           Digital Copy Not Available          Add to Book Cart  |   Download MARC