PMID: 11930952Apr 5, 2002Paper

Inactivation of conidia of Botrytis cinerea and Monilinia fructigena using UV-C and heat treatment

International Journal of Food Microbiology
D MarquenieChris W Michiels

Abstract

The effect of UV-C (lambda = 254 nm) and heat treatment was investigated on the inactivation of conidia of Botrytis cinerea and Monilinia fructigena, two major postharvest spoilage fungi of strawberries and cherries, respectively. Both fungi were grown at 21 degrees C in the dark and conidia were isolated after 1 week by washing the mycelium with a mild detergent solution. After filtration and resuspension in phosphate buffer to a titer of 10(5) to 10(6) cfu/ml, the conidia were subjected to different treatments. The applied UV-C doses varied from 0.01 to 1.50 J/cm2, and the conditions for the thermal treatment were 3, 5, 10, 15 and 20 min at temperatures ranging from 35 to 48 degrees C. Both techniques were applied individually and in combination. Spore inactivation increased with increasing intensity of single treatments. No surviving spores of B. cinerea were observed after 15 min at 45 degrees C or an UV-C treatment of 1.00 J/cm2. M. fructigena was more sensitive and a thermal treatment of 3 min at 45 degrees C or an UV-C treatment of 0.50 J/cm2 resulted in complete spore inactivation. Combination of both techniques reduced the required intensity of the treatment for inactivation of both fungi. The order of the applications...Continue Reading

References

Jun 1, 1997·Phytopathology·D E Aylor, S Sanogo

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Citations

Dec 2, 2011·Annual Review of Food Science and Technology·Paula Luisina GómezStella Maris Alzamora
Aug 19, 2014·Plant Physiology and Biochemistry : PPB·Chayma OuhibiMokhtar Lachaal
Mar 27, 2012·International Journal of Food Microbiology·R Villa-RojasJ Tang
Aug 1, 2015·International Journal of Food Microbiology·Mari Luz Artíguez, Iñigo Martínez de Marañón
Sep 23, 2014·Letters in Applied Microbiology·K ImadaS Ito
Feb 1, 2017·Critical Reviews in Food Science and Nutrition·Jia LiuQi Wang
Jan 13, 2021·Journal of Fungi·Silvia Rodríguez-PiresAntonieta De Cal
Jan 1, 2010·Comprehensive Reviews in Food Science and Food Safety·Rajeev BhatA A Karim
Feb 27, 2021·Frontiers in Plant Science·Rachael WarnerMark Lefsrud

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