UnissResearch

Logo Universitàegli studi di Sassari
titoli, abstracts, parole chiave >>>
Sodium icarbonate induces crystalline wax generation, activates host-resistance, and increases imazalil level in rind wounds of oranges, improving the control of green mold during shborage

Dore, Antonio and Molinu, Maria Giovanna and Venditti, Tullio and D’Hallewin, Guy (2010) Sodium icarbonate induces crystalline wax generation, activates host-resistance, and increases imazalil level in rind wounds of oranges, improving the control of green mold during shborage. Journal of Agricultural and Food Chemistry, Vol. 58 (12), p. 7297-7304. eISSN 1520-5118. Article.

Full text not available from this repository.

DOI: 10.1021/jf101013j

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 post-treatment, 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.

Item Type:Article
ID Code:5795
Status:Published
Refereed:Yes
Uncontrolled Keywords:Combined treatment, scoparone, citrus sinensis, penicillium digitatum, cuticle membrane
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/15 Scienze e tecnologie alimentari
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di scienze delle produzioni alimentari, Sassari
Publisher:American Chemical Society
eISSN:1520-5118
Deposited On:11 May 2011 09:37

I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore

Repository Staff Only: item control page