| Author | Chen, Yubai |
| Call Number | AIT Thesis no. AE-89-24 |
| Subject(s) | Rice--Milli
|
| Note | A Thesis submitted in partial fulfillment of the requirements
for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | This is a study of the effects of environmental
conditions on breakage during milling of rice . This relates
to milling yields. Long grains of the Supan 60 variety,
freshly harvested and from a 6 months old storage, were used
for the experiment. The initial moisture content of fresh
rice and old rice were 1 3 . 4% ( w. b.) and 1 2. 1 % < w. b.),
respectively. The study was conducted in two parts.
Experiments in the first part were performed on a Satake
Testing Miller, inside an environment ally controlled room.
The results revealed that the head yield of both fresh
and old rice decreased with increase of temperature in the
mill room in the range of from 20°C to 35°C. The higher head
yield was obtained under 70 % to 80 % of RH in 20°C to 25°C of
temperature. The most optimum RH values were 78 % and 73 %
for fresh rice and old rice, respectively. Old rice had a
lower head yield than fresh rice, but had a little higher
total yield than fresh rice.
The second part of this study relates milling yield to
the tempering treatment during the milling process. The result
indicated that with tempering treatment during 2 passes or 3
passes milling process, the temperature rise in the grain
during mil ling could be reduced 3. 5 to 4. 5 °c and the head
yield found to increase about 1 % for both fresh and old rice
compared with none tempering treatment . No definite relation
could be found to relate total yield with tempering treatment. |
| Year | 1989 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Athapol Noomhorm; |
| Examination Committee(s) | Illangantileke, Sarath G. ;Salokhe, Vilas M. ;Jindal, Vinod Kumar ; |
| Scholarship Donor(s) | Government of Canada ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |