Chemical and irradiation treatment of contaminated high moisture corn for aflatoxin control | |
| Author | Escalante, Francisco P. |
| Call Number | AIT Thesis no. AE-87-20 |
| Subject(s) | Food, Irradiated Corn Aflatoxins |
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Ionizing radiation at doses 2, 4, and 6 kGy and chemical treatment with Nilspor-Plus, a propionic based fungicide, at concentrations 2, 4, and 6 lit/ton were evaluated as potential preservatives to control aflatoxin in high moisture corn. Changes in the mechanical properties, macro-nutritive values and microbiological components were monitored at regular intervals for three months. No significant change in the macro-nutritive values were detected in all treated kernels. Irradiation and chemical treatment terminated the germinating capacity of seeds. Some chemically treated seeds germinated because of insufficient chemical coating on these seeds. The linear load limit decreased with increasing storage time except for corn treated with 6 kGy radiation dose and 6 lit/ton fungicide. Kernels treated with 6 lit/ton fungicide showed the highest load limit values. The cause is attributed to the low pH which may have altered kernel structure. There was a logarithmic relationship between fungal load ratio and radiation dose received or chemical concentration applied.Irradiation doses at 2, 4, and 6 kGy resulted in total fungal mortality of 88.9%, 93.7% and 97.6% respectively.Chemical application at concentrations 2, 4, and 6 lit/ton resulted in total fungal kill of 78 . 8%, 94.5%, and 98.5% respectively. Optimum doses of irradiation and chemical treatments are effective in arresting fungal activity hence preventing aflatoxin production. Radiation dose of 6 kGy could not detoxify existing aflatoxin in con |
| 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) | Illangantileke, Sarath G. |
| Examination Committee(s) | Athapol Noomhorm ;Jindal, Vinod Kumar |
| Scholarship Donor(s) | Government of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |