TANNINS GRAVIMETRIC YIELD CONDENSED IN Anadenanthera peregrina BARK IN DIFFERENT DIAMETER CLASSES

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Caroline Junqueira Sartori Fábio Akira Mori Fábio Akira Mori Mara Lúcia Agostini Valle Mara Lúcia Agostini Valle Lourival Marin Mendes Lourival Marin Mendes Thiago de Paula Protásio Thiago de Paula Protásio

Abstract

This work aimed to determine the gravimetric yield of condensed tannins in the Anadenanthera peregrina bark in different diameter classes. Fifty-nine trees samples were collected of Anadenanthera peregrina, at 1.30m of the ground (diameter at breast height - DBH), distributed in seven diameter classes. The barks were dried and crushed in mill of hammer. Composite sample was made to prepare the extract. The extraction was done using water in the ratio 15:1 (v/w), added 3% sodium sulfite (w/w) in water-bath at 70°C for 4 hours. The material was filtered using fine cloth strainer and concentrated on a heating plate at approximately 150 g. It was determined the extract mass and removed 10 g for obtaining solids content and 20g for the Stiasny’s index. The average values of total solids content, Stiasny’s index, condensed tannin content and the compound content non-tannin were 11.34%; 75.79%; 12.76% and 4.07%, respectively. The content of solids, Stiasny’s index, compound content non-tannin show significant differences between diameter classes. For the condensed tannins production, the diameter class parameter there was no influence. 

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How to Cite
SARTORI, Caroline Junqueira et al. TANNINS GRAVIMETRIC YIELD CONDENSED IN Anadenanthera peregrina BARK IN DIFFERENT DIAMETER CLASSES. CERNE, [S.l.], v. 20, n. 2, p. 239-244, apr. 2016. ISSN 2317-6342. Available at: <http://www.cerne.ufla.br/site/index.php/CERNE/article/view/982>. Date accessed: 11 nov. 2019.
Keywords
Red-angico, Stiasny’s index, phenolic compounds, natural adhesive.
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