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Effect of hexanal vapor on the growth of postharvest pathogens and fruit decay.
- Source :
-
Journal of food science [J Food Sci] 2007 May; Vol. 72 (4), pp. M108-12. - Publication Year :
- 2007
-
Abstract
- The effect of the natural volatile hexanal was studied as an antifungal agent on the major postharvest fungal pathogens Botrytis cinerea, Monilinia fructicola, Sclerotinia sclerotiorum, Alternaria alternata, and Colletotrichum gloeosporioides. The antifungal effect of hexanal vapor was dependent on concentration and treatment duration, but sensitivity of the pathogens varied. All spores of B. cinerea and M. fructicola were killed after exposure to 900 microL/L for 12 h at 20 degrees C, and almost all were killed after a 24-h exposure to 450 microL/L. Only moderate numbers of spores were killed at a concentration of 200 microL/L. Mycelial growth of S. sclerotiorum on agar was completely inhibited after a 12-h exposure to 900 microL/L, but only slight inhibition occurred at 450 microL/L and none at 200 microL/L. Mycelium of A. alternata and C. gloeosporioides appeared more sensitive, with strong inhibition occurring after a 12-h exposure at 450 microL/L. Similar trends in spore viability and mycelial growth were observed at 7 degrees C. The antifungal effect of hexanal vapor was further tested on raspberry fruit naturally infected with B. cinerea and on peach fruit inoculated with spores of M. fructicola. Decay was markedly reduced in raspberry and almost completely controlled in peach after exposure to 900 microL/L hexanal vapor for 24 h. The potential of hexanal for postharvest decay control is discussed.
- Subjects :
- Antifungal Agents pharmacology
Botrytis
Dose-Response Relationship, Drug
Food Microbiology
Food Preservation methods
Fungi growth & development
Mitosporic Fungi drug effects
Mitosporic Fungi growth & development
Plant Diseases microbiology
Prunus drug effects
Prunus microbiology
Spores, Fungal drug effects
Spores, Fungal growth & development
Time Factors
Treatment Outcome
Volatilization
Aldehydes pharmacology
Fruit drug effects
Fruit microbiology
Fungi drug effects
Temperature
Subjects
Details
- Language :
- English
- ISSN :
- 1750-3841
- Volume :
- 72
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of food science
- Publication Type :
- Academic Journal
- Accession number :
- 17995777
- Full Text :
- https://doi.org/10.1111/j.1750-3841.2007.00341.x