Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1072949
Research center of Embrapa/Collection: Embrapa Meio Ambiente - Nota Técnica/Nota Científica (ALICE)
Issue Date: 2017
Type of Material: Nota Técnica/Nota Científica (ALICE)
Authors: PORTO, R. S.
RATH, S.
QUEIROZ, S. C. do N. de
Additional Information: RAFAEL SILVEIRA PORTO, IQ-UNICAMP; SUSANNE RATH, IQ-UNICAMP; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA.
Title: Conyza canadensis: green extraction method of bioactive compounds and evaluation of their antifungal activity.
Publisher: Journal Of the Brazilian Chemical Society, v. 28, n. 5, p. 913-919, 2017.
Language: en
Keywords: Atividade antifúngica
Biopesticida
Description: 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.
Thesagro: Extrato vegetal
Planta produtora de pesticida
Doença de planta
Pós-colheita
NAL Thesaurus: Conyza canadensis
Antifungal properties
Plant extracts
Biopesticides
Year: 2017-07-20
ISSN: 1678-4790
Appears in Collections:Nota Técnica/Nota científica (CNPMA)

Files in This Item:
File Description SizeFormat 
2017NT01.pdf295,38 kBAdobe PDFThumbnail
View/Open

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace