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- Title
Quantificação de taninos nas cascas de jurema-preta e acácia-negra.
- Authors
Calegari, Leandro; Goes Lopes, Pedro Jorge; de Oliveira, Elisabeth; Alberto Gatto, Darci; Martins Stangerlin, Diego
- Abstract
Due to its chemical complexity, there are several methodologies for vegetable tannins quantification. Thus, this work aims at quantifying both tannin and non-tannin substances present in the barks of Mimosa tenuiflora and Acacia mearnsii by two different methods. From bark particles of both species, analytical solutions were produced by using a steam-jacketed extractor. The solution was analyzed by Stiasny and hide-powder (no chromed) methods. For both species, tannin levels were superior when analyzed by hide-powder method, reaching 47.8% and 24.1% for A. mearnsii and M. tenuiflora, respectively. By Stiasny method, the tannins levels considered were 39.0% for A. mearnsii, and 15.5% for M. tenuiflora. Despite the best results presented by A. mearnsii, the bark of M. tenuiflora also showed great potential due to its considerable amount of tannin and the availability of the species at Caatinga biome.
- Publication
Brazilian Journal of Forest Research / Pesquisa Florestal Brasileira, 2016, Vol 36, Issue 85, p61
- ISSN
1809-3647
- Publication type
Article
- DOI
10.4336/2016.pfb.36.85.986