Influence of storage temperature and cultivars on T‐2 toxin and neosolaniol accumulation in apples inoculated with Trichothecium roseum.

Autor: Xue, H., Bi, Y., Tang, Y., Hukkeri, S., Li, X., Pu, L., Nan, M., Fu, G., Wang, Yi, Li, Y.
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Zdroj: Journal of Food Processing & Preservation; Feb2018, Vol. 42 Issue 2, p1-1, 7p
Abstrakt: Abstract: Trichothecium roseum is one of the most dreadful postharvest pathogens responsible for core rot of apples. Besides causing economic loss, the disease is also associated with mycotoxins contamination. The effects of storage temperature and lesion diameter on T‐2 toxin and neosolaniol (NEO) accumulation were evaluated in genetically diverse apple cultivars. The results showed T‐2 concentration was much higher in Fuji than that in Ralls, while NEO was only detected in Red Delicious. The room temperature is favorable for T‐2 and NEO accumulation compared with low temperature. We also noticed the positive relationship between the size of lesion diameter and the concentrations of NEO and T‐2. NEO and T‐2 were found not only in the rotten part, but in the adjacent asymptomatic tissue, indicating that the spread of the trichothecenes to non‐infected of the fruits, and trichothecenes concentration showed a trend of decline with increase in distance from the rotten parts. Practical application: Trichothecium roseum is one of the most important postharvest pathogens, and can cause core rot of apples. The disease not only causes economic loss, but also results in trichothecene contamination. Storage temperature and the size of lesion diameter significantly affected T‐2 and neosolaniol accumulation in genetically diverse apple. The results showed T‐2 toxin concentration was much higher in Fuji than that in Ralls, while neosolaniol was only detected in Red Delicious. The room temperature was favorable for T‐2 toxin and neosolaniol accumulation compared with low temperature. In addition, the positive relationship between the size of lesion diameter and the concentrations of neosolaniol and T‐2 toxin was observed. T‐2 toxin and neosolaniol were found not only in the rotten part, but also in the adjacent asymptomatic tissue, and the concentration showed a trend of decline with increase in distance from the rotten parts. The study will be useful not only for apple post‐harvest storage and reduce the health risk of exposure to the trichothecenes of T‐2 toxin and neosolaniol, but also provide baseline information for the introduction of EU‐limits for T‐2 toxin and neosolaniol. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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