Fungal growth and ergosterol content in tomato fruits infected by fungi.
Battilani, P.; Chiusa, G.; Cervi, C.; Trevisan, M.; Ghebbioni, C.;
Italian Journal of Food Science Year: 1996 Vol: 8 Issue: 4 Pages: 283-289 Ref: 14 ref.
1996
บทคัดย่อ
The invasive ability of several fungal species in vitro and their effect on quality of tomatoes cv. Red River, was evaluated. The 7 species most frequently associated with spoiled tomatoes were used: Alternaria alternata, Botrytis cinerea, Fusarium oxysporum, Geotrichum candidum, Phoma lycopersici [Didymella lycopersici], Rhizoctonia solani and Rhizopus nigricans [R. stolonifer]. The fungal effect was assessed at days 1, 2, 4 and 8 after inoculation using 3 methods: volume of spoiled tomato, Howard Mould Count and the analytical determination of ergosterol. The results showed significant differences in the parameters measured in relation to the fungi considered, the time of incubation and their interaction. There was a significant correlation between the quality parameters measured by the 3 evaluation methods, with a percentage of variation explained by the regression of c. 50%. This implied that the relationship between qualitative parameters can be computed, but with a high level of uncertaint
y (a wide confidence interval). It is concluded it is only theoretically possible to specify an 'alert' value with this procedure.