Control of postharvest green and blue molds of citrus fruit by application of sodium dehydroacetate

Duan, Xiaofang; Jing, Guoxing; Fan, Feng; Tao, Nengguo

doi:10.1016/j.postharvbio.2015.10.015

Cited by 29 publications

(10 citation statements)

References 15 publications

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“…For example, the effective antifungal concentration of the commonly used fungicide imazalil (IMZ) against green and blue molds requires 0.4 g/L [40]. In the in vivo experiments herein, P7G treatment significantly reduced the lesion diameter and disease development of blue mold in "Newhall" navel orange wounds inoculated with P. italicum, with a lower disease severity of P7G-treated (5 × and 10 × MFC) fruit of only 30.9 ± 3.7% and 27.4 ± 1.0% after 7 days post inoculation (Figure 3), which is consistent with those previously reported [41][42][43][44]. Recent studies have reported the antifungal potential of P7G in citrus fruit, while the results of the current study showed a strong check on the disease development of blue mold in citrus fruit and in vitro growth of P. italicum when exposed to various concentrations of P7G.…”

Section: Discussionsupporting

confidence: 91%

Pinocembrin-7-Glucoside (P7G) Reduced Postharvest Blue Mold of Navel Orange by Suppressing Penicillium italicum Growth

Chen

Wan

2020

Microorganisms

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The current study aimed to examine the in vitro and in vivo antifungal potential of pinocembrin-7-glucoside (P7G). P7G is an antifungal flavanone glycoside isolated from Ficus hirta Vahl. fruit against Penicillium italicum, a causative pathogen of blue mold disease in citrus fruit, and this study elucidates its possible action mechanism. P7G had a prominent mycelial growth inhibitory activity against P. italicum, with an observed half maximal effective concentration, minimum inhibitory concentration and minimum fungicidal concentration of 0.08, 0.2, and 0.8 g/L, respectively. The data from the in vivo test show that P7G significantly reduced blue mold symptoms and disease development of P. italicum in artificially inoculated “Newhall” navel orange. Compared to the control, increases in the cell membrane permeability of P. italicum supernatant and decreases in the intracellular constituent (e.g., soluble protein, reducing sugar, and total lipid) contents of P. italicum mycelia were identified, supporting scanning electron microscopy and transmission electron microscopy observations. Furthermore, a marked decline in both chitin and glucanase contents of P. italicum mycelia treated with P7G was induced by increasing its related degrading enzyme activities, suggesting that the cell wall structure was destroyed. The current study indicated that P7G may be a novel alternative for reducing blue mold by suppressing mycelial growth of P. italicum via a cell membrane/wall-targeting mechanism.

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Section: Discussionsupporting

confidence: 91%

Pinocembrin-7-Glucoside (P7G) Reduced Postharvest Blue Mold of Navel Orange by Suppressing Penicillium italicum Growth

Chen

Wan

2020

Microorganisms

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“…El tratamiento donde se aplicó hipoclorito de sodio (125 ppm) fue seleccionado para ser empleado en la etapa posterior, con el criterio que logró mantener niveles menores (0%) en IDE durante los primeros 6 días de almacenamiento, la ausencia de efectos adversos en los frutos y el mínimo costo de su implementación incluso a gran escala. El uso de una menor concentración a la reportada para la mayoría de los frutales (150-250 ppm de hipoclorito de sodio); se debió al posible daño por la susceptibilidad que los frutos de papaya presentan por el efecto prolongado de dosis por arriba de 130 ppm (DUAN et al, 2016). En esta etapa del estudio, aunque no se evaluaron parámetros de calidad o textura en los frutos, se observó que los frutos tratados con alcohol al 70% presentaron signos de daño por el tratamiento, después de nueve días de almacenamiento, la epidermis de los frutos se mostró ligeramente deshidratada (rugosa) y con una coloración opaca no característica de los frutos de papaya en la postcosecha.…”

Section: Discussionunclassified

Uso combinado de radiación UV-C y biorecubrimiento de quitosán con aceites esenciales para el control de hongos en papaya Maradol

et al. 2018

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Resumen -La antracnosis y pudrición blanda en frutos de papaya provocan deterioro de la calidad, así como grandes pérdidas durante el manejo postcosecha. El uso de estrategias individuales para el control de enfermedades resulta poco eficiente. Por lo anterior, en el presente estudio se evaluó el efecto sinérgico de varias estrategias de control sobre la incidencia de enfermedad causada por la inoculación de esporas de los hongos Colletotrichum gloeosporioides (Penz.) y Rhizopus stolonifer (Ehrenb.) en papaya var. Maradol. Se evaluaron tratamientos resultantes de la combinación del uso de biorecubrimientos compuestos elaborados con quitosán (15 g L -1 ) adicionadas con aceites esenciales (AE) de clavo, tomillo y/o lima (5 ó 10 mL L -1 de cada AE) y tres dosis de irradiación UV-C (0.97 kJ·m -2 , 2 kJ·m -2 y 2.88 kJ·m -2 ), aplicados a las 12, 24 y 48 h post-inoculación de esporas de los fitopatógenos. El tratamiento donde se combinó el biorecubrimiento adicionado con 10 mL L -1 de AE de clavo y 10 mL L -1 de AE de tomillo y una dosis de irradiación UV-C de 2.88 kJ m -2 (B1T92) aplicado a las 24 h post-inoculación de esporas, logró mantener la incidencia de enfermedad (para ambos hongos evaluados) a valores menores de 25% durante nueve días de almacenamiento a temperatura de 28 ± 3 °C y 80% de HR. Este mismo tratamiento redujo la velocidad específica de la enfermedad, con valores de 0.549 y 0.029 d -1 para C. gloeosporioides y R. stolonifer, respectivamente. Otros tratamientos (B2T62, B1T34, B1T34, B1T94) presentaron actividad antifúngica (valores promedio de incidencia de 35% durante todo el almacenamiento) para R. stolonifer. Los resultados de este trabajo demuestran que el efecto sinérgico del uso de biorecubrimientos de quitosán con aceites esenciales y energía UV-C controla el desarrollo de hongos causantes de antracnosis y pudrición blanda en frutos de papaya Maradol. Términos para indexación: Colletotrichum gloeosporioides; Rhizopus stolonifer; sinergismo; incidencia de enfermedad; velocidad específica de infección. Combination of uv-c radiation and chitosan films enriched withessential oils for fungi control in papaya 'Maradol' Abstract -Anthracnose and soft rot cause deterioration of quality as well as large losses during post-harvest handling of papaya fruits. The single strategies for disease control is little efficient. We analyzed the effect of to integrate control strategies on the incidence of disease caused by the inoculation of spores of the fungi Colletotrichum gloeosporioides (Penz.) and Rhizopus stolonifer (Ehrenb.) into papaya (Carica papaya L.) 'Maradol'. The following treatments were evaluated: a combination of the use of composite films made with chitosan (15 g L -1 ) enriched with clove, thyme and / or lime essential oils, (EO) (5 or 10 mL L -1 of each EO) and three irradiation UV-C doses (0.97 kJ·m -2 , 2 kJ·m -2 y 2.88 kJ·m -2 ), applied at 12, 24, and 48 h post-inoculation of phytopathogens spores. The treatment where combined coating with 10 mL L -1 of clove EO and 10 mL L -1 of thyme ...

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“…The use of chemical fungicides to control fungal diseases during the postharvest storage of citrus fruits may bring potential risks to human health and the environment [2]. Therefore, there is an obvious demand for other approaches to reduce decay and to prolong postharvest life of citrus fruits [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ozone Treatment on Flavonoid Accumulation of Satsuma Mandarin (Citrus unshiu Marc.) during Ambient Storage

et al. 2019

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This study aimed to compare the flavonoid accumulation between ozone-treated and untreated Satsuma mandarin (Citrus unshiu Marc.) fruits. The fruits exposed to gaseous ozone were found to have higher antioxidant activities and content of flavonoid during the storage period by ultra-high performance liquid chromatography (UPLC). To reveal the molecular regulation of flavonoid accumulation by ozone, chalcone synthase (CHS), chalcone isomerase (CHI), β-1,3-glucanase (GLU), chitinase (CHT), phenylalanine ammonia-lyase (PAL), and peroxidase (POD) were identified and their expression was examined by quantitative real-time polymerase chain reaction (q-PCR). These results support the promising application of ozone treatment as a safe food preservation technique for controlling postharvest disease and extending shelf-life of harvested Satsuma mandarin.

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Control of postharvest green and blue molds of citrus fruit by application of sodium dehydroacetate

Cited by 29 publications

References 15 publications

Pinocembrin-7-Glucoside (P7G) Reduced Postharvest Blue Mold of Navel Orange by Suppressing Penicillium italicum Growth

Pinocembrin-7-Glucoside (P7G) Reduced Postharvest Blue Mold of Navel Orange by Suppressing Penicillium italicum Growth

Uso combinado de radiación UV-C y biorecubrimiento de quitosán con aceites esenciales para el control de hongos en papaya Maradol

Effect of Ozone Treatment on Flavonoid Accumulation of Satsuma Mandarin (Citrus unshiu Marc.) during Ambient Storage

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