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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
20/07/2017 |
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Data da última atualização: |
19/01/2018 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
PORTO, R. S.; RATH, S.; QUEIROZ, S. C. do N. de. |
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Afiliação: |
RAFAEL SILVEIRA PORTO, IQ-UNICAMP; SUSANNE RATH, IQ-UNICAMP; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA. |
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Título: |
Conyza canadensis: green extraction method of bioactive compounds and evaluation of their antifungal activity. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal Of the Brazilian Chemical Society, v. 28, n. 5, p. 913-919, 2017. |
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ISSN: |
1678-4790 |
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DOI: |
http://dx.doi.org/10.21577/0103-5053.20160228 |
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Idioma: |
Inglês |
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Conteúdo: |
Abastrac: Synthetic fungicides are a common treatment for post-harvest diseases in fruits, although demand is increasing for alternatives such as biopesticides. The aim of this work was to investigate the presence of naturally occurring antifungal compounds in Brazilian specimens of the weed Conyza canadensis. Two compounds [(4Z)-lachnophyllum lactone and (4Z,8Z)-matricaria lactone] were isolated and their antifungal activities were evaluated against eight postharvest disease fungi. Aspergillus niger, Cladosporium sp., and Penicillium digitatum proved susceptible to the treatment (minimum inhibitory concentrations varying from 32 to 64 µg mL-1). These fungi are common postharvest pathogens of fruits and vegetables, causing rots and secreting mycotoxins. A green and sustainable extraction method employing pressurized hot water was developed and optimized (100 °C, 4 × 1 min cycles). Yields of 1.46 and 0.24 mg g-1 were obtained for (4Z)-lachnophyllum lactone and (4Z,8Z)-matricaria lactone, respectively. The extract could be applied directly to fruits and vegetables in postharvest treatments. |
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Palavras-Chave: |
Atividade antifúngica; Biopesticida. |
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Thesagro: |
Doença de planta; Extrato vegetal; Planta produtora de pesticida; Pós-colheita. |
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Thesaurus Nal: |
Antifungal properties; Biopesticides; Conyza canadensis; Plant extracts. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/161951/1/2017NT01.pdf
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Marc: |
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022 $a1678-4790
024 7 $ahttp://dx.doi.org/10.21577/0103-5053.20160228$2DOI
100 1 $aPORTO, R. S.
245 $aConyza canadensis$bgreen extraction method of bioactive compounds and evaluation of their antifungal activity.$h[electronic resource]
260 $c2017
520 $aAbastrac: Synthetic fungicides are a common treatment for post-harvest diseases in fruits, although demand is increasing for alternatives such as biopesticides. The aim of this work was to investigate the presence of naturally occurring antifungal compounds in Brazilian specimens of the weed Conyza canadensis. Two compounds [(4Z)-lachnophyllum lactone and (4Z,8Z)-matricaria lactone] were isolated and their antifungal activities were evaluated against eight postharvest disease fungi. Aspergillus niger, Cladosporium sp., and Penicillium digitatum proved susceptible to the treatment (minimum inhibitory concentrations varying from 32 to 64 µg mL-1). These fungi are common postharvest pathogens of fruits and vegetables, causing rots and secreting mycotoxins. A green and sustainable extraction method employing pressurized hot water was developed and optimized (100 °C, 4 × 1 min cycles). Yields of 1.46 and 0.24 mg g-1 were obtained for (4Z)-lachnophyllum lactone and (4Z,8Z)-matricaria lactone, respectively. The extract could be applied directly to fruits and vegetables in postharvest treatments.
650 $aAntifungal properties
650 $aBiopesticides
650 $aConyza canadensis
650 $aPlant extracts
650 $aDoença de planta
650 $aExtrato vegetal
650 $aPlanta produtora de pesticida
650 $aPós-colheita
653 $aAtividade antifúngica
653 $aBiopesticida
700 1 $aRATH, S.
700 1 $aQUEIROZ, S. C. do N. de
773 $tJournal Of the Brazilian Chemical Society$gv. 28, n. 5, p. 913-919, 2017.
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Embrapa Meio Ambiente (CNPMA) |
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