OrangerV1, Main, Exploration, bibRecord, 001C53

Sodium Bicarbonate Induces Crystalline Wax Generation, Activates Host-Resistance, and Increases Imazalil Level in Rind Wounds of Oranges, Improving the Control of Green Mold During Storage

Identifieur interne : 001C53 ( Main/Exploration ); précédent : 001C52; suivant : 001C54

Sodium Bicarbonate Induces Crystalline Wax Generation, Activates Host-Resistance, and Increases Imazalil Level in Rind Wounds of Oranges, Improving the Control of Green Mold During Storage

Auteurs : Antonio Dore [Italie] ; Maria Giovanna Molinu [Italie] ; Tullio Venditti [Italie] ; Guy D'Hallewin [Italie]

Source :

Journal of agricultural and food chemistry : (Print) [ 0021-8561 ] ; 2010.

RBID : Pascal:10-0320943

Descripteurs français

Pascal (Inist)
- Sodium, Cire, Résistance, Blessure, Orange, Vert, Moisissure, Conservation aliment, Entreposage, Traitement associé, Citrus sinensis, Penicillium, Cuticule, Membrane.
Wicri :
- topic : Sodium.

English descriptors

KwdEn :
- Citrus sinensis, Combined treatment, Cuticle, Food preservation, Green, Injury, Membrane, Mould, Orange, Penicillium, Resistance, Sodium, Warehousing, Wax.

Abstract

Imazalil (IMZ) was quantified in the flavedo and albedo (Citrus fruits outer and inner tissue of the exocarp) of wounded and unwounded Valencia L. Olinda oranges following a 2 min immersion at 25 °C in 50, 100, or 250 μg mL^-1 of the fungicide mixture with or without 3% sodium bicarbonate (SBC). The addition of SBC significantly reduced the decay incidence throughout 30 d of storage at 10 °C with 95% RH and 6 d of simulated marketing period at 25 °C and 75% RH. In unwounded oranges, IMZ uptake was not changed by the coapplication of SBC, and the fungicide was predominantly recovered in the flavedo. To the contrary, in the albedo of wounded fruit, the residue level increased by about 6-fold when the fungicide was applied with SBC. When SBC was coapplied to wounded fruit, the phytoalexin scoparone was induced in the albedo and the accumulation was not affected by IMZ. When fruit was treated with SBC, scanning electron microscopy observations evidenced a production of crystalline wax patches with branched stripes and the magnitude was positively correlated to the salt concentration in the mixture. The generation as fast as 24 h posttreatment, and the different morphology of the new wax suggests a displacement of intracuticular waxes which can affect the fungicide sorption and diffusion coefficient into the rind.

Affiliations:

Italie

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to stream Main, to step Curation: 001C53

Le document en format XML

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<front><div type="abstract" xml:lang="en">Imazalil (IMZ) was quantified in the flavedo and albedo (Citrus fruits outer and inner tissue of the exocarp) of wounded and unwounded Valencia L. Olinda oranges following a 2 min immersion at 25 °C in 50, 100, or 250 μg mL<sup>-1</sup>
 of the fungicide mixture with or without 3% sodium bicarbonate (SBC). The addition of SBC significantly reduced the decay incidence throughout 30 d of storage at 10 °C with 95% RH and 6 d of simulated marketing period at 25 °C and 75% RH. In unwounded oranges, IMZ uptake was not changed by the coapplication of SBC, and the fungicide was predominantly recovered in the flavedo. To the contrary, in the albedo of wounded fruit, the residue level increased by about 6-fold when the fungicide was applied with SBC. When SBC was coapplied to wounded fruit, the phytoalexin scoparone was induced in the albedo and the accumulation was not affected by IMZ. When fruit was treated with SBC, scanning electron microscopy observations evidenced a production of crystalline wax patches with branched stripes and the magnitude was positively correlated to the salt concentration in the mixture. The generation as fast as 24 h posttreatment, and the different morphology of the new wax suggests a displacement of intracuticular waxes which can affect the fungicide sorption and diffusion coefficient into the rind.</div>
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Sodium Bicarbonate Induces Crystalline Wax Generation, Activates Host-Resistance, and Increases Imazalil Level in Rind Wounds of Oranges, Improving the Control of Green Mold During Storage

Sodium Bicarbonate Induces Crystalline Wax Generation, Activates Host-Resistance, and Increases Imazalil Level in Rind Wounds of Oranges, Improving the Control of Green Mold During Storage

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri