| Author | Tabil, Lope Galindo, Jr. |
| Call Number | AIT Thesis no. AE-87-26 |
| Subject(s) | Corn--Drying
|
| 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 | Corn samples were rehydrated and redried, and tested for
breakage in order to investigate the change in quality in terms
of breakage susceptibility, which is a useful parameter in corn
processing. The rehydration and redrying treatments used
represented different rates of moisture sorption in corn.
Specific breakage rate - from the mechanical breakage test by
grinding, and linear load limit and apparent modulus of
elasticity - from uniaxial compression test were used to quantify
the breakage susceptibility of the samples during the
rehydration- redrying cycle. Initial moisture of the samples,
rehydration methods and redrying temperatures were the factors
used in comparing the breakage susceptibility. It was found that
all these factors had significant effect on breakage
susceptibility. Samples with low initial moisture - 8. 42% had
higher susceptibility to breakage than samples with higher
moisture of 10 and 12. 75%. Rehydration method A representing the
highest moisture adsorption rates resulted to samples that were
more susceptible to breakage than the other two rehydration
methods, representing intermediate and slow rates of moisture
adsorption. Temperature of drying of the rehydrated samples also
showed significant effects. High temperatures of 55 and 80°C did
increased the susceptibility of breakage of the corn
samples. Redried samples were also found to have higher breakage
susceptibility than rehydrated samples. In all the treatments
used it was found that breakage susceptibility increased even at
low redrying temperature. Equations were developed describing the
relationships of specific breakage rates and linear load limit,
and the different variables used in the study. |
| Year | 1987 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Athapol Noomhorm; |
| Examination Committee(s) | Illangantileke, Sarath G. ;Jindal, Vinod Kumar; |
| Scholarship Donor(s) | Royal Thai Government (King's Scholarship) ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |