Physical properties of three Iranian onion varieties
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2013, Vol 7, Issue 9
Abstract
Onion with food and medical properties contains many essential vitamins and mineral which are necessary for the human health. Due to lack of information about the physical properties of onion in Iran, this crop is sold with lower quality.In this research, some physical properties of three Iranian varieties of onion were studied. True density, coefficient of friction, rolling angle, dimensions and shape index were measured. Polar diameter (a) range is from 46.93 mm to 59.82 mm and equatorial diameter (c) is from 46.63 mm to 59.82 mm. The average of 1.004±0.023, 1.001±0.027 and 1.099±0.119 shape index was estimated for red Azarshahr, white Kashan and yellow Isfahan varieties, respectively. It showed that those three cultivars are spherical in shape. The coefficient of static friction on plywood, galvanized, rubber and PVC surfaces were about 0.243 to 0.821, 0.195 to 0.916, 0.852 to 1.186 and 0.909 to 1.250 respectively. The rolling angle was obtained from 11.13 to 15.87 degrees. The results showed that frictional surface have no effects on rolling angle.
Authors and Affiliations
Hossein Ghaffari| Lecturer, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tabriz, Iran, Neman Marghoub| MSc Student, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tabriz, Iran, email: neman_marghoub@yahoo.com, Mehdi Shirazi Sheikhdarabadi| Former MSc Student, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Urmia, Iran, Ali Hakimi| Graduated from Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tabriz, Iran, Farzin Abbasi| MSc Student, Dept. of Agricultural Machinery, Faculty of Agriculture, University of Tehran, Iran
Keywords
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