Physical Properties of Radish (Raphanus sativus L.) Seed as a Function of Moisture Content
2010
Cetin, Mustafa | Simsek, Erkan | Akbas, Taner | Ozarslan, Cengiz
The physical properties of radish (Raphanus sativus L.) seed were determined as a function of moisture content in the range of 6.95–19.08% dry basis (d.b.). The lengthL, width W and thickness T of seeds ranged from 3.34–3.53, 2.52–2.77 and 2.01–2.27 mm, respectively, as the moisture content increased from 6.95–19.08% d.b. In this moisture range, the 1000-seed mass increased from 11.9–13.85 g, the projected area from 4.76–5.86 mm2, the sphericity from 0.77–0.80, the porosity from 30.17–33.07% and the terminal velocity from 7.16–7.93 m s-1. On the other hand, the bulk density decreased from 698.6–652.3 kg m-3 and the true density from 1000.41–974.66 kg m-3. Within the moisture content range, the static coefficient of friction of radish seed increased linearly against surfaces of four structural materials, namely, rubber (0.354–0.410), aluminum (0.295–0.346), stainless steel (0.245–0.306) and galvanized iron (0.308–0.368).
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