Journal of Food, Agriculture and Environment

Vol 10, Issue 1,2012
Online ISSN: 1459-0263
Print ISSN: 1459-0255

The effect of sorting on aflatoxin reduction of pistachio nuts


Ahmad Shakerardekani 1,2, Roselina Karim 1*, Fatemeh Mirdamadiha 2

Recieved Date: 2011-09-02, Accepted Date: 2012-01-06


Quality of dried sorted pistachio nuts could have an important role in the aflatoxin B1 content of final pistachio lot. In order to determine this effect in different pistachio cultivars, samples of Fandoghi, Ahmad Aghaei and Kale-Ghoochi lots were divided to 7 categories based on the physical appearance of dried pistachios which were yellowish-brown stain, dark-greyish stain, large, medium, tiny, damaged and non-split. The aflatoxin content was measured by the TLC-Scanner method and results showed that the average aflatoxin content of the yellowish-brown stained nuts of the Fandoghi, Ahmad Aghaei, and Kale-Ghoochi cultivars were 136.2, 632.4 and 120.3 ng g-1, respectively, while in the dark-greyish stained nuts contained 28.7, 292.8, 7.3 ng g-1, respectively. The amount of aflatoxin in the Fandoghi, Ahmad Aghaei and Kale-Ghoochi lots can be significantly (P≤0.05) reduced to 94.6%, 97.2% and 98.8%, respectively, if all the stained nuts were removed from the lot during sorting. The highest aflatoxin B1 content was detected in the stained nuts of all the cultivars studied. This study showed that segregation or removal of all the stained nuts from the unstained portion during the sorting process could contribute to the reduction of aflatoxin content in the final dried pistachio lot. 


Pistachios, aflatoxin, sorting, contamination, mycotoxins, Aspergillus flavus

Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 1
Category: Agriculture
Pages: 459-461

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