with the collaboration of Iranian Society of Mechanical Engineers (ISME)

Document Type : Research Article


1 Graduated student in agricultural Mechanization، Faculty of Agriculture، Ferdowsi University of Mashhad

2 Ferdowsi University of Mashhad

3 Dept of biosystems Engineering School of Agriculture Ferdowsi University of Mashhad Mashhad, IRAN


The loss problem on-fields and paddy milling factory dryers have always been challenging issues in the rice industry. Different losses forms may occur in brown rice depend on the field and factory conditions. To reduce the losses, proper management during pre-harvest, harvesting, and post-harvest operations are essential. In this study, different on-field and factory drying methods were investigated to detect different forms of brown rice losses.Obviously, the importance of food security has always been matter in developing countries. An Identifying losses source on the fields and factories is one way to achieve food security. Consequently, drying on the fields for 5h and, subsequently, stacking and plastic covering are not recommended in terms of effect on increasing the percent of brown rice losses. Also, in the factory dryers, it is recommended using the 3-stage with 10h tempering at 40 °C and 0.5 m s-1 air speed due to the importance of scheduling in the management of the dryer unit.


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