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Effect of TBZ, acetaldehyde, citral and Thymus capitatus essential oil on 'Minneola' tangelo fruit decay

Arras, Giovanni and Piga, Antonio <1965- > and Agabbio, Mario Carlo Salvatore (1996) Effect of TBZ, acetaldehyde, citral and Thymus capitatus essential oil on 'Minneola' tangelo fruit decay. In: 8th International citrus congress: proceedings, 12-17 May 1996, Sun City Resorth, South Africa. Riverside, International Society of Citriculture. Vol. 1. p. 406-409. Conference or Workshop Item.

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Abstract

Thiabendazole (TBZ), citral, acetaldehyde (AA), and Thymus capitatus essential oil-were tested for their ability to control decay on 'Minneola' tangelo fruit sprayed with a conidial suspension of Penicillium digitatum, either alone, or in combination with a low dose (100 ppm) of TBZ. TBZ at 2000 ppm was used as the standard. Thyme oil, citral and AA, all at 100 ppm (v/v), were applied under reduced pressure (0.6 bar) and heated to complete vaporisation. Control treatments were performed at normal and reduced pressure. Viability of fungal spores was checked by plating the rinsing water of three fruit per experimental plot on potato-dextrose agar dishes. A colony count was performed daily. All treatments significantly reduced the viability of the pathogen, TBZ at 2000 ppm being the best. The volatile compounds provided better control of the patbogen than TBZ at 100 ppm. Thus, T. capitatus oil, citral and AA could be of great interest in controlling postharvest disease of citrus fruits.

Item Type:Conference or Workshop Item (Lecture)
ID Code:2068
Status:Published
Uncontrolled Keywords:Acetaldehyde, citral, orange, postharvest, Thymus capitatus essential oil
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
001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:International Society of Citriculture
Publisher Policy:Depositato per gentile concessione dell'International Society of Citriculture
Deposited On:18 Aug 2009 10:06

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