Taninos: uma abordagem da química à ecologia

Monteiro, Júlio Marcelino; Albuquerque, Ulysses Paulino; Araújo, Elcida de Lima; Amorim, Elba Lúcia Cavalcanti de

doi:10.1590/s0100-40422005000500029

Cited by 213 publications

(170 citation statements)

References 37 publications

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“…However, pharmacological proprieties can be associated with phytochemical compounds found in this study such as flavonoids which have antioxidant, antiinflammatory and hepatoprotective properties (Lopes et al 2000) saponins, related to antimicrobial and antiinflammatory activities (Müller 2006) and tannins with antimicrobial and astringent activities (Monteiro et al 2005).…”

Section: Discussionmentioning

confidence: 84%

Phytochemical Screening and Acute Toxicity of Aqueous Extract of Leaves of Conocarpus erectus Linnaeus in Swiss Albino Mice

Nascimento

Souza

Oliveira

et al. 2016

An. Acad. Bras. Ciênc.

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Mangroves represent areas of high biological productivity and it is a region rich in bioactive substances used in medicine production. Conocarpus erectus (Combretaceae) known as button mangrove is one of the species found in mangroves and it is used in folk medicine in the treatment of anemia, catarrh, conjunctivitis, diabetes, diarrhea, fever, gonorrhea, headache, hemorrhage, orchitis, rash, bumps and syphilis. The present study aimed to investigate the acute toxicity of aqueous extract of leaves of C. erectus in Swiss albino mice. The plant material was collected in Vila Velha mangroves, located in Itamaracá (PE). The material was subjected to a phytochemical screening where extractive protocols to identify majority molecules present in leaves were used. The evaluation of acute toxicity of aqueous extract of C. erectus followed the model of Acute Toxicity Class based on OECD 423 Guideline, 2001. The majority molecules were identified: flavonoids, tannins and saponins. The LD 50 was estimated at 2,000 mg/kg bw. Therefore, the aqueous extract showed low acute toxicity classified in category 5.

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Section: Discussionmentioning

confidence: 84%

Phytochemical Screening and Acute Toxicity of Aqueous Extract of Leaves of Conocarpus erectus Linnaeus in Swiss Albino Mice

Nascimento

Souza

Oliveira

et al. 2016

An. Acad. Bras. Ciênc.

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“…This result was probably due to the presence of phenolic compounds in the extract, such as hydrolysable tannins which can significantly reduce insect survival and growth, since they inactivate digestive enzymes and create a tannin-protein complex that is difficult to digest (Mello and Silva-Filho, 2002); or catechin that shows higher toxicity to insects that tannins, although it has low affinity for proteins (Monteiro et al, 2005). Gallo et al (2006) also observed inhibition of larval growth of S. frugiperda as a result of the activity of condensed tannins from extracts of Siphoneugena densiflora Berg (Myrtaceae).…”

Section: Resultsmentioning

confidence: 99%

Toxicity of the phenolic extract from jabuticabeira (Myrciaria cauliflora (Mart.) O. Berg) fruit skins on Spodoptera frugiperda

Alves

Corrêa

Alves

et al. 2014

Chilean J. Agric. Res.

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Fall armyworm, Spodoptera frugiperda J.E. Smith, 1797 (Lepidoptera: Noctuidae) is the main pest of maize, besides attacking sorghum and cotton crops. The control of this pest has been accomplished mainly with the use of synthetic insecticides but, due to the growing concern about the environment and food quality, phenolic compounds have shown their potential for the biological control of this insect. Thus, the objective of the present study was to evaluate the efficiency of the extract of jabuticabeira, Myrciaria cauliflora [Mart.] O. Berg (Myrtaceae) fruit skin flour in the control of S. frugiperda. Skins of M. cauliflora Sabará genotype were dried at 45 °C in a forced air oven. In order to obtain the extract, 1.0 g flour was mixed with 10 mL acetone: water solution (7:3 v/v). Forty-eight-hour-old S. frugiperda caterpillars were placed in glass tubes with an artificial diet containing the extract at concentrations of 0, 250, 500, 1000, and 2000 mg L -1 . The extract, in which the phenolic compounds gallic acid, gallocatechin, catechin, epicatechin, ellagic acid, and salicylic acid were identified at a concentration of 2000 mg L -1 , in average, increased mortality rates by 150% in the larval stage, duration of larval stages by 60%, and pupal by 17%, and decreased amount of females by 55%. On the other hand, the extract at 1000 mg L -1 only increased duration of larval period by 24%. It was concluded that the extract is harmful to this insect, probably due to the presence of phenolic compounds.

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“…The tannins inhibiting the growth of certain microorganisms among them Staphylococcus aureus, Streptococcus pneumonia and Bacillusanthracis (Monteiro, Albuquerque, Araújo, & Amorim, 2005),besides stimulating the production of saliva and gastric and pancreatic juice, increasing the digestibility of nutrients (Platel & Srinivasan, 1996), and consequently reducing the presence of substrate necessary to the development of undesirable microorganisms, resulting in improved animal performance.…”

Section: Resultsmentioning

confidence: 99%

<b>Supplementation of extract of <i>Lafoensia pacari</i> in the diet of semi heavy laying hens

Moreira

Stringhini

Conceição

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. It was intended to evaluate the supplementation of Lafoensia pacari standardized in tannins extract in the diet of laying hens on the performance, internal and external quality of eggs and metabolism of the feed nutrients. A total of 168 Isa Brown laying hens, aged 24 weeks, with the mean weight of 2.6 kg and the mean posture rate of 87% were used during 4 periods of 28 days each. The treatments consisted of Halquinol performance-enhancing antibiotic, Mannanoligosaccharide (MOS) prebiotic and three levels of pacari extract -1,000, 2,000 and 3,000 mg kg -1 of feed. The experimental design was completely randomized, with six treatments and seven replicates of four hens each. The pacari standardized in tannin extract presented a percentage of albumen and an egg weight similar to the antibiotic (p < 0.04). The supplementation with the extract improved the shell quality, verified by the specific gravity (p < 0.03) and promoted the metabolizability of ether extract similar to antibiotic and MOS (p < 0.04), allowing its indication as a phytogenic additive.Keywords: egg production, metabolism, performance, phytogenic additive. Suplementação de extrato de Lafoensia pacari na ração de poedeiras semipesadasRESUMO. Objetivou-se avaliar a suplementação do extrato de Lafoensia pacari padronizado em taninos na ração de poedeiras sobre o desempenho, a qualidade interna e externa de ovos e metabolizabilidade dos nutrientes da ração. Utilizaram-se 168 poedeiras Isa Brown com 24 semanas de idade, peso médio 2,6 kg e taxa de postura média 87% durante quatro períodos de 28 dias cada. Os tratamentos constituíram de rações com antibiótico melhorador de desempenho Halquinol, prebiótico Mananoligossacarídeo (MOS) e três níveis de extrato de pacari -1.000, 2.000 e 3.000 mg kg -1 de ração. O delineamento experimental foi inteiramente casualizado com seis tratamentos e sete repetições com quatro aves cada. O extrato de pacari padronizado em teor de taninos apresentou porcentagem de albúmen e peso do ovo semelhante ao antibiótico (p < 0,04). A suplementação com o extrato melhorou a qualidade da casca, verificada pela gravidade específica (p < 0,03) e promoveu metabolizabilidade do extrato etéreo semelhante ao antibiótico e MOS (p < 0,04), sendo indicado como aditivo fitogênico.Palavras-chave: aditivo fitogênico, produção de ovos, desempenho, metabolismo.

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Taninos: uma abordagem da química à ecologia

Cited by 213 publications

References 37 publications

Phytochemical Screening and Acute Toxicity of Aqueous Extract of Leaves of Conocarpus erectus Linnaeus in Swiss Albino Mice

Phytochemical Screening and Acute Toxicity of Aqueous Extract of Leaves of Conocarpus erectus Linnaeus in Swiss Albino Mice

Toxicity of the phenolic extract from jabuticabeira (Myrciaria cauliflora (Mart.) O. Berg) fruit skins on Spodoptera frugiperda

<b>Supplementation of extract of <i>Lafoensia pacari</i> in the diet of semi heavy laying hens

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