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Type: Journal article
Title: Effect of method of application on antifungal efficacy of citral against postharvest spoilage fungi of citrus in culture
Author: Klieber, A.
Scott, E.
Wuryatmo, E.
Citation: Australasian Plant Pathology, 2002; 31(4):329-332
Publisher: Australasian Plant Pathology Society Inc
Issue Date: 2002
ISSN: 0815-3191
Abstract: Three methods of challenging Penicillium digitatum, P. italicum and Geotrichum candidum with citral in culture were examined. All three species failed to grow when spores were spread on neutral Dox-yeast (NDY) agar mixed with 3000, 6000 or 15 000 μL/L citral in 400 μL/L TritonX emulsifier, but development progressed normally in the absence of citral. Mixing of spores with citral solutions of 3000–15 000 μL/L for 1 h before plating, to simulate dipping of fruit, reduced viability of P. italicum, and growth of G. candidum was completely inhibited by 6000–15 000 μL/L citral. Citral solutions of 15 000 μL/L inhibited all three species completely. Exposure of spores to citral in the volatile phase, simulating fumigation, completely prevented growth of all three fungi at headspace concentrations of 16 000–40 000 μL/L. The potential of citral in the volatile phase to control postharvest spoilage of citrus is discussed.
Keywords: Headspace concentration; SPME; volatile
RMID: 0020021187
DOI: 10.1071/AP02034
Appears in Collections:Agriculture, Food and Wine publications

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