Duration effect of whitening machine on grain temperature, moisture content and rice manufacturing indicators

	Duration effect of whitening machine on grain temperature, moisture content and rice manufacturing indicators
journal of kerbala university
Article 1, Volume 9, Issue 0, 2013, Pages 133-139 PDF (0 K)
Abstract
The study aim to determine whitening duration effect of whitening machine (type Satake grain mill) on some manufacturing indicators for sheller rice . Four whitening time period used(15, 30, 45.60 seconds) to see the effect of changing time in grain temperature , moisture content , percentage of broken grains and the degree of grain whiteness. Has used samples of rice Amber 33. Results showed that increase in whitening time effects significantly on the grain temperature ( from 18.34 C ° to 26.7 C °). And showed a significant effect in increasing of rice whiteness degree , have ranged (from 24.6 to 33.8 ) degree . And has a significant effect in increasing of broken grains ratio and ranged between (4% - 7.63%). The study also showed a negative relationship between the time of grain whitening and grain moisture content .Moisture content decreased from 13.37% to 11.8% . Results were analyzed statistically according to completely randomized design CRD with three replicates , differences tested by (LSD) . Whitening period of 45 second was recommended . Key word : whitening duration, rice temperature , degree of whiteness, rice moisture , percentages of whitened breakage rice.

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