Evaluation of the use of Ozone, UV-C and Citric acid in reducing aflatoxins in pistachio nut
2022
Babaee, Reza | Karami-Osboo, Rouhollah | Mirabolfathy, Mansoureh
The effects of gaseous ozone (O₃), UV-C radiation, and citric acid (CA) on aflatoxins degradation in contaminated pistachio samples were investigated. By the evaluation of different combinations, the optimum amounts of O₃, UV-C, and CA were achieved. The best treatment was a combination of the immersion of the samples in 3 N CA, 30 minutes’ exposure to O₃, and 36 hours exposed to UV-C radiation, by this combination more than 90 % of aflatoxin B₁ and aflatoxin B₂ and more than 99 % of aflatoxin G₁ and aflatoxin G₂ were degraded. No significant changes were observed in total fat content, protein content, acid and peroxide content, total phenolic compounds, soluble and insoluble carbohydrates of pistachios. Also there were no significant changes between sweetness, acidity, flavor, color, and overall quality of treated and non-treated samples. The results showed that the combination of O₃, UV-C, and CA was much more effective than the effect of each of them alone.
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