ISOLATION OF TANNINS FROM CAESALPINIA CORIARIA AND EFFECT OF PHYSICAL PARAMETERS
Journal Title: International Research Journal of Pharmacy (IRJP) - Year 2011, Vol 2, Issue 2
Abstract
The subject of the present work is the study of the influence of particle size temperature, methanol content and time on the extraction of tannins from caesalpinia coriaria by pressure autoclaving method. The determination of these tannins by spectrophotometry, after extraction, enabled us to establish the qualitative and quantitative evolution of this component and the effect of each extraction conditions on the total tannins from caesalpinia coriaria. Under the extraction conditions examined, temperature was the main factor influencing tannin extraction. The extractable material is derived from a blend of raw materials with different particle characteristics. Preliminary studies indicated the advantage of employing small particle size for achieving high extraction efficiency. However, from pressure drop, grinding energy and product purification cost points of view, fine grinding is not favored. A particle size range of 5-15 mm is favored as tannin extraction. The results suggest that a decrease/degradation of these compounds is less noticeable at low temperature (40° C) on the other hand the effect of time and substrate concentration on the extraction and evolution of the analyzed compounds that is tannins seemed to be less important than temperature.
Authors and Affiliations
Lokeswari Nallabilli , Sujatha Peela
Keywords
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