Conyza canadensis: green extraction method of bioactive compounds and evaluation of their antifungal activity.

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dc.contributorRAFAEL SILVEIRA PORTO, IQ-UNICAMP; SUSANNE RATH, IQ-UNICAMP; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA.
dc.creatorPORTO, R. S.
dc.creatorRATH, S.
dc.creatorQUEIROZ, S. C. do N. de
dc.date2017-10-24T09:25:23Z
dc.date2017-10-24T09:25:23Z
dc.date2017-07-20
dc.date2017
dc.date2018-01-19T11:11:11Z
dc.date.accessioned2026-07-07T05:05:05Z
dc.descriptionAbastrac: 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.
dc.identifierJournal Of the Brazilian Chemical Society, v. 28, n. 5, p. 913-919, 2017.
dc.identifier1678-4790
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1072949
dc.identifierhttp://dx.doi.org/10.21577/0103-5053.20160228
dc.identifier.urihttp://hdl.handle.net/123456789/479785
dc.languageeng
dc.rightsopenAccess
dc.subjectAtividade antifúngica
dc.subjectBiopesticida
dc.subjectExtrato vegetal
dc.subjectPlanta produtora de pesticida
dc.subjectDoença de planta
dc.subjectPós-colheita
dc.subjectConyza canadensis
dc.subjectAntifungal properties
dc.subjectPlant extracts
dc.subjectBiopesticides
dc.titleConyza canadensis: green extraction method of bioactive compounds and evaluation of their antifungal activity.
dc.typeArtigo de periódico

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