Journal of Science and Technology (JUST) >
Journal of Science and Technology 2000- >
Please use this identifier to cite or link to this item:
|Title: ||Influence of Drying Temperature and Storage Duration on Fissuring and Milling Quality of Jasmine 85 Rice Variety|
|Authors: ||Akowuah, J. O.|
|Keywords: ||Jasmine 85|
head rice yield
|Issue Date: ||Aug-2012|
|Publisher: ||Journal of Science and Technology|
|Citation: ||Journal of Science and Technology, Vol. 32, No. 2, 2012, pp 26-33|
|Abstract: ||Moisture and temperature gradients induce the development of fissures during drying of paddy
kernels. This affects the milling quality of the paddy and eventually reduces the head rice yield.
To this effect, a study was conducted to investigate the influence of drying temperature and storage
duration on the cracking behaviour and head rice yield of a local rice variety - Jasmine 85.
Freshly harvested paddy samples were thin layer dried in a tunnel dryer with varying drying temperatures
(45°C, 50°C, 55°C) as treatments and direct sun drying as control. The drying experiment
was performed under three replications using a completely randomised design. Samples
after drying were stored for three months in sealed plastic bags at room temperature (28°C). Percentage
fissures and head rice yield at each drying treatment was determined using a grain scope
and a Satake grading machine respectively after the storage period. The highest head rice yield
(76.3%) and the least fissure rate (10%) were attained at the control temperature. This was followed
by the 45°C and 50°C treatments which gave head rice yields of 70.8%, and 69.8%, with
fissure rates of 13% and 16% respectively. The least head rice yield (64.7%) and the highest fissure
rate of 29% were observed at 55°C. There was a significant difference (p ≤ 0.05) between
head rice yields obtained at 55°C and the control experiment. However, there was no significant
difference (p ≤ 0.05) between head rice yield obtained at 45°C, 50°C and the control temperature.
It is evident from this study that, Jasmine 85 can be dried by using a mechanical dryer at
higher temperatures of 45°C and 50°C without affecting its milling qualities.|
|Description: ||Article published in the Journal of Science and Technology, Vol. 32, No. 2, 2012, pp 26-33|
|Appears in Collections:||Journal of Science and Technology 2000-|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.