Data/hora: 10/06/2024 08:26:07

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 15/12/2021
Data da última atualização: | 15/12/2021
Autoria: | MIRANDA, M.; SUN, X.; ASSIS, O. B. G. de; FERENCE, C.; FERREIRA, M. D.; BALDWIN, E. A.
Afiliação: | M. MIRANDA, UNESP; X. SUN, USDA; ODILIO BENEDITO GARRIDO DE ASSIS, CNPDIA; C. FERENCE, USDA; MARCOS DAVID FERREIRA, CNPDIA; E. A. BALDWIN, USDA.
Título: | Antifungal activity of Zingiber officinale Roscoe (ginger) oil and extracts, associated with carnauba wax nanoemulsions, on fungal control of harvest papaya.
Ano de publicação: | 2021
Fonte/Imprenta: | ISHS Acta Horticulturae, v. 1325, p. 191-198, 2021.
DOI: | 10.17660/ActaHortic.2021.1325.28
Idioma: | Inglês
Notas: | V International Symposium on Postharvest Pathology: From Consumer to Laboratory-Sustainable Approaches to Managing Postharvest Pathogens.
Conteúdo: | ABSTRACT: Essential oils and plant extracts can be safe alternatives for reducing post-harvest decay in foods compared to synthetic preservatives. Ginger oil (GO) and ethanolic extracts (GE) has been in vitro studied. Antifungal activity associated with fruit coatings on papaya has not been exhaustively investigated until now. In this study, the antifungal activity of GOs and GEs to control Colletotrichum gloeosporioides was investigated. In vitro results showed that GO has higher activity compared to GE, significantly reducing mycelial growth. The measured minimum inhibitory concentration (MIC) of GOs and GE were 0.1 to 0.8% (v/v) and 2.5 to 5%, respectively. Petri dishes inoculated with C. gloeosporioides were coated with carnauba wax nanoemulsion (CWN), GO nanoemulsion (at 3 and 6%), and their combination. Results showed that after 24h plates treated with 3 or 6% of GO, and CWN exhibited significant inhibition of the mycelial zone (MZI). The combination of CWN coating and GO was more effective than GO alone. CWN coatings resulted in significantly higher MZI alone or when associated with GO, compared to GO itself or control-water. After 7 days, plates treated with GO resulted in the same MZI as control, and CWN demonstrated inhibition against C. gloeosporioides. In vivo tests on ?Redland? papayas coated with CWN showed effective control upon fungal growth. The lowest values of fungal disease severity occurred when CWN was associated with GO (at 3 and 6% v/v). By comparing the CWN and GO alone activities, CWN resulted in higher decay inhibition. At a concentration of 6% GO, the diseases severity were superior than that found in uncoated fruits, suggesting GO phytotoxicity at that level.
Palavras-Chave: | Carnauba wax nanoemulsion; Edible coatings; Ethanolic extracts; Papaya decay.
Thesagro: | Colletotrichum Gloeosporioides.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/229244/1/ACTA-Antifungal-Zingiber-Miranda.pdf
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (17916-1) - UPC - AP - DD - PROCI.21/159 -  - 2021.163 - DIS