No abstract

Inactivation characteristics by UV-C radiation of Cladosporium cladosporioides and Penicillium digitatum, known as decay-inducing molds on fruits, were investigated. The survival curve of C. cladosporioides with irradiation dose was found to be biphasic in nature; the inactivation rate was initially high and slowed with increasing irradiation dose. In contrast, the survival curve of P. digitatum was approximately linear. A shoulder on the survival curves of both species was observed at low dose, indicating their resistance to low-dose UV-C. The mathematical model representing the inactivation of C. cladosporioides was the biphasic linear model, whereas the first-order kinetics model was applicable to P. digitatum.

The results obtained in this study indicate the potential of using fluorescence fingerprint as an instrumental method for assessing sensory characteristics of tomato juices.