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PH—Postharvest Technology: Physical Properties of Cotton Seed

✍ Scribed by C. Özarslan

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
125 KB
Volume
83
Category
Article
ISSN
1537-5110

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✦ Synopsis

Some physical properties of delinted and bare cotton seed were evaluated as a function of moisture content. The average length, width and thickness of seeds ranged from 9Á02 to 9Á19, 4Á70 to 4Á86 and 4Á25 to 4Á45 mm as the moisture content increased from 8Á33 to 13Á78% dry basis (d.b.), respectively. In the same moisture range, studies on rewetted cotton seed showed that the sphericity increased from 0Á626 to 0Á635, the seed volume from 95Á4 to 109Á6 mm 3 , thousand seed mass from 104Á06 to 109Á64 g, projected area from 35Á89 to 40Á14 mm 2 and the terminal velocity from 8Á46 to 8Á67 m s À1 . The static coefficient of friction of cotton seed also increased linearly on four structural materials, namely, stainless steel (0Á27-0Á35), galvanized iron (0Á38-0Á41), plywood (0Á39-0Á42) and rubber (0Á42-0Á44). The bulk density decreased from 642 to 610 kg m À3 , true density from 1091 to 1000 kg m À3 , porosity from 41Á16 to 39Á00% and the shelling resistance from 65Á0 to 50Á2 N.

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