1 AIT Asian Institute of Technology

Microwave heating of high moisture paddy for safe storage

AuthorDardo, Rebecca Go
Call NumberAIT Thesis no.AE-85-16
Subject(s)Rice--Drying
NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
PublisherAsian Institute of Technology
AbstractThe effect of microwave heat treatment on the head rice yield, milling yield, and on the percent germination of high moisture paddy were investigated. Rewetted paddy samples with initial moisture contents of 18, 22 and 26 percent (w.b.) were heated at 50, 70 and 90ํ for 5, 10, 15, and 20 minutes. treated and control samples were stored for 3, 7, 10, and 14 days and dried subsequently under room conditions for milling and germination tests. In general, heat treatments resulted in increased safe storage periods of high moisture paddy because fungal invasion was delayed. Results showed that head rice yield was improved by heat treatments at 22 percent moisture content for all temperature treatments and for 26 percent moisture content treated at 70 and 90ํ c, but showed no advantage with 18 percent moisture content. Exposure time was significant only for 22 percent moisture content. For 18 percent moisture content, at 50 and 70ํ c treatment there were no significant differences in head rice yield between control and treated samples. For all moisture contents tested, germination was reduced by heat treatment. Germinability decreased with the increase in heating temperature, exposure time, and storage period.
Year1985
TypeThesis
SchoolSchool of Environment, Resources, and Development (SERD)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSAgricultural and Food Engineering (AE)
Chairperson(s)Jindal, Vinod Kumar
Examination Committee(s)Illangantileke, Sarath G. ;Gupta, Chandra P.
Scholarship Donor(s)German Academic Exchange Service (DAAD)
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1985


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