2006
DOI: 10.1590/s0103-90162006000600002
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Characterization of condensed tannins from native legumes of the Brazilian northeastern semi-arid

Abstract: Despite the possible influence of tannins on the nutritional value of the forages from Caatinga vegetation, there are few studies that evaluated their tannin concentration. This study was conducted to characterize condensed tannins present in the legumes species Mimosa hostilis (Jurema Preta), Mimosa caesalpinifolia (Sabiá) and Bauhinia cheilantha (Mororó), at three stages of their phenological cycle. The concentration of soluble tannin (ST), bound tannin (BT) and total tannin (TT) were determined using the bu… Show more

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Cited by 32 publications
(24 citation statements)
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References 15 publications
(15 reference statements)
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“…These changes enabled MIC to increase GP during the 96 h of in vitro fermentation. Similar in situ results with PEGsupplemented MIC were reported by Guimarães-Beelen et al (2006), who observed increases of 112% for the degradation rate, 25% for potential degradability, and 32% for effective degradability.…”
Section: Discussionsupporting
confidence: 88%
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“…These changes enabled MIC to increase GP during the 96 h of in vitro fermentation. Similar in situ results with PEGsupplemented MIC were reported by Guimarães-Beelen et al (2006), who observed increases of 112% for the degradation rate, 25% for potential degradability, and 32% for effective degradability.…”
Section: Discussionsupporting
confidence: 88%
“…Higher fibre and phenolic concentrations of MIC seemed not to be related to plant maturity or phenological stage or these factors were more influenced by soil fertility (Barry and Forss, 1983;Lees et al, 1994), water deficiency, and excessive heat (Reed et al, 1990;Vitti et al, 2005) which may be directly associated with increased concentrations of secondary compounds in plants. Guimarães-Beelen et al (2006) investigated the leaves of MIC from a semi-arid site in the northeast of Brazil and observed greater CT (154 vs. 105 g/kg DM) and much lower aNDFom (476 vs. 706 g/kg) concentrations compared with MIC utilized in this study. Different geographic, weather conditions and individual characteristics of the plants and species have their own bearing on the nutritive quality of forages.…”
Section: Discussionmentioning
confidence: 86%
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“…Para proteína bruta observou-se diferença significativa (p<0,05) entre os perío-dos, tanto para folha quanto para o ramo, apresentando valores superiores para o período chuvoso, provavelmente devido ao fato de que a maior atividade fotossintética permitida pelo aumento na disponibilidade hídrica, incrementa a fixação biológica de nitrogênio. Os resultados observados para época chuvosa são próximos aos observados por Araújo Filho et al (2002) e superiores aos encontrados por Guimarães-Beelen et al (2006) para sabiá na fase vegetativa. Os valores médios observados de proteína bruta para as duas frações da planta em função dos períodos de avaliação, exceto ramos no período seco, foram superiores ao mínimo necessário para dieta de ruminantes, o que evidencia a importância da leguminosa estudada como suporte alimentar, notadamente nas áreas de baixa precipitação do Nordeste Brasileiro, considerando ser uma espécie ecologicamente adaptada.…”
Section: Resultsunclassified
“…possui relevante aplicação madeireira, forrageira e como combustível (GUIMARÃES-BEELEN et al, 2006). Além disso, a planta tem grande importância medicinal, sendo sua parte aérea amplamente empregada nas práticas caseiras da medicina popular para o tratamento da diabetes (BARBOSA-FILHO et al, 2005).…”
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