Peracetic Acid and Chlorine Dioxide for Postharvest Control of <i>Monilinia laxa</i> in Stone Fruits

Mari, Marta; Cembali, Tiziano; Baraldi, Elena; Casalini, Lucia

doi:10.1094/pdis.1999.83.8.773

Cited by 36 publications

(17 citation statements)

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“…En forma similar, las esporangiosporas de R. stolonifer requirieron de 100 µg·mL -1 por 30 min para una total inhibición de la germinación. Estos valores son diferentes a 50 µg·mL -1 por 1 min reportado en el control de conidias de Monilia laxa en nectarines (Mari et al, 1999), o 10 µg·mL -1 por 0,5 min en la germinación de esporas de Botrytis cinerea, Penicillium expansum y Mucor piriformis (Spotts y Peters, 1980). Robert y Reymond (1994) en estos mismos patógenos, encontraron 99% de mortalidad en soluciones de 3-5 µg·mL -1 por 1 min de exposición.…”

Section: Discusionunclassified

Effectiveness of chlorine dioxide as influenced by concentration, pH, and exposure time on spore germination of Botrytis cinerea, Penicillium expansum and Rhizopus stolonifer.

Zóffoli

Latorre

Daire

et al. 2005

Ciencia e investigación agraria

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) is an alternative to hypochlorites (NaOCl, Ca(OCl) 2 ) for fruit and vegetable sanitization to reduce postharvest decays caused, among other fungi, by Botrytis cinerea, Penicillium expansum and Rhizopus stolonifer. Due to economical reasons and because of its explosiveness, the use of chlorine dioxide has been relatively limited. However, the development of stabilized commercial formulations has allowed to reintroduce it. In this study, the efficacy of a new stabilized chlorine dioxide formulation (Tecsa®Clor, Protecsa S.A., Santiago,Chile) to inhibit conidial germination of B. cinerea and P. expansum, and sporangiospore germination of R. stolonifer was demonstrated. The efficacy was dependent primarily on concentration and exposure time but it was also affected by pH. Conidia germination of B. cinerea was inhibited over 98% at concentrations higher than 75 or at 25 µg·mL -1 after 1 or 30 min of contact, respectively. Similarly, over 90% inhibition of conidial germination of P. expansum was achieved with 100 and 25 µ·mL -1 after 1 and 30 min, respectively. Sporangiospores of R. stolonifer were inhibited by 90% at 100 µg·mL -1 for 30 min. The pH of the solution increased as chlorine dioxide concentration increased, and the biological activity decreased considerably at pH higher than 8, after 5 and 15 min of contact. No phytotoxic effects were obtained on pear cv. Packham's Triumph even at 1000 µg·mL -1 after 20-day-exposure at 20 ºC. Therefore the stabilized commercial formulation of chlorine dioxide is an alternative to chlorinate water to treat fruits by immersion in order to control B. cinerea, P. expansum and R. stolonifer during postharvest. For a complete control, concentrations higher than 75 µg·mL -1 should be used at pH between 7 and 8.

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Section: Discusionunclassified

Effectiveness of chlorine dioxide as influenced by concentration, pH, and exposure time on spore germination of Botrytis cinerea, Penicillium expansum and Rhizopus stolonifer.

Zóffoli

Latorre

Daire

et al. 2005

Ciencia e investigación agraria

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“…Limited data are available on the effects of peracetic acid (PAA) for control of post‐harvest fruit decay. Peracetic acid has been tested on tomatoes and degreened oranges with contradicting results, but on stone fruits, against M. laxa , PAA (250 μ g ml −1 ), it significantly reduced brown rot after conidia were exposed for 2 min (Mari et al. , 1999).…”

Section: 3 Sanitizing Productsmentioning

confidence: 99%

Non-conventional methods for the control of post-harvest pear diseases

2003

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“…Peroxyacetic acid, or peracetic acid, has been shown to be effective on brown rot when stone fruits are dipped for extended periods of time (Mari et al 1999). The use of HPPA in storage was evaluated by Klimes (2002), but inconsistent disease control was reported.…”

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confidence: 99%

Effect of Post-Harvest Fungicides and Disinfestants on the Suppression of Silver Scurf on Potatoes in Storage

et al. 2011

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Silver scurf of potato, caused by Helminthosporium solani, can be a serious problem of potato tubers sold for table stock. The fungus originates primarily on seed and infects the periderm of daughter tubers, causing unsightly blemishes that reduce tuber quality. Secondary spread occurs in potato storage facilities when spores produced on infected tubers are moved through the air system. Depending on storage conditions and time, even a low initial disease incidence can result in significant losses through quality reductions. In the past, thiabendazole has been the most effective post harvest treatment in controlling this disease, but the development of fungicide resistance has made this product unreliable. Because of the lack of consistent alternatives, studies were conducted from 2001 to 2003 to examine the efficacy of various products in suppressing silver scurf incidence and severity when applied to tubers following harvest and prior to storage.Daughter tubers from a seed lot with high incidence of silver scurf symptoms were grown and then harvested 1 month after vine kill. After harvest, tubers were treated with a post-harvest application of various products, stored, and then evaluated for disease incidence and severity each year at two locations (Washington or Oregon and Idaho) and at two time periods (2 or 3 months and 6 months following storage). When treated tubers were stored from the fall of 2002 to spring of 2003, potassium sorbate and B. subtilis reduced disease severity after 6 months in storage at location 1, while azoxystrobin reduced incidence after 6 months in location 2. During the 2003-2004 storage season, azoxystrobin reduced silver scurf at both locations after 2 months of storage. Most products currently labeled for post-harvest silver scurf management were ineffective. While not currently registered, azoxystrobin used as a post-harvest, pre-storage treatment may be a significant method for commercial potato growers to suppress silver scurf in potato storage.Resumen La mancha plateada de la papa, causada por Helminthosporium solani, puede ser un problema serio de tubérculos de papa para el mercado en fresco. El hongo se origina primeramente en la semilla e infecta el peridermo de los tubérculos hijos, causando manchados desagradables que reducen la calidad del tubérculo. La dispersión secundaria se presenta en las instalaciones de almacenamiento de papa cuando las esporas producidas en tubér-culos infectados se mueven a través del sistema de aire. Dependiendo de las condiciones de almacenamiento y del tiempo, aún una incidencia baja inicial de la enfermedad puede resultar en pérdidas significativas por reducción de la calidad. En el pasado, el thiabendazole ha sido el tratamiento más efectivo de postcosecha en el control de esta enfermedad, pero el desarrollo de resistencia a fungicidas ha hecho no confiable a este producto. Debido

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Peracetic Acid and Chlorine Dioxide for Postharvest Control of Monilinia laxa in Stone Fruits

Cited by 36 publications

References 10 publications

Effectiveness of chlorine dioxide as influenced by concentration, pH, and exposure time on spore germination of Botrytis cinerea, Penicillium expansum and Rhizopus stolonifer.

Effectiveness of chlorine dioxide as influenced by concentration, pH, and exposure time on spore germination of Botrytis cinerea, Penicillium expansum and Rhizopus stolonifer.

Non-conventional methods for the control of post-harvest pear diseases

Effect of Post-Harvest Fungicides and Disinfestants on the Suppression of Silver Scurf on Potatoes in Storage

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