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This processing step is mainly done in the USA and unfortunately it is not common in our Iranian Pistachio country. Removal of deformed, peeled, smudged and moldy pistachios using eyes or automatic devices.

 

Hollow or semi-hollow pistachios by air Unripe pistachios are isolated by immersion in water. Then, half-empty smiling pistachios are separated by air. Unsmiling pistachios are separated by immersion in water. Then the nailed pistachio is broken by a smile and its kernel is sold.

 

Final processing of pistachios for marketing

 

It is thought that there is no possibility of contamination of hooked pistachios with aflatoxin, but in some experiments it has been reported that after inoculation of wet and dry pistachios with spores of Aspergillus flavus and storage in favorable conditions for fungal growth in the brain of hooked pistachios. .

 

These studies prove that the pistachio kernel can also penetrate into the pistachio. For this reason, drainage operations should be avoided before mechanical smiling (laughing water). The pistachios that are on the market, as well as the crushed and chopped pistachios, are packed in different sizes.