| Author | Em-orn Rungreungwudhikrai |
| Call Number | AIT Thesis no. AE-95-29 |
| Subject(s) | Tilapia
|
| Note | A thesis submitted in partial fulfillment for the requirements for the degree Master of Science, School of Environment, Resources, and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The first part of this study was to determine and classify off-flavour of Nile tilapia in
various management regimes. Fifty fives fish samples were collected from 8 provinces in Central
and Eastern Thailand. Fish were skinned, dressed and bones removed before storage in a
freezer. Fillets were portioned into 10 g pieces, wrapped in a aluminum foil and cooked in a
pressure cooker. A taste panel evaluated the cooked fish for off-flavour. The taste panel
classified and rated fish numerically as excellent (7-10), good (4-6.9) and poor (0-3.9). Offflavours were found in most of the fish samples consisting of a total of 23 flavours. There was
no relationship between environment parameters and off-flavour.
Live fish, identified by the panel as off-flavoured fish , were transported from the farm
and 80 fish were stocked into each circular tank (1.5 m diameter). Static and exchanged of both
freshwater and 10 ppt brackish water were used to treat off-flavour. It was found that off-flavour
of tilapia sized between 450-600 g could be reduced or eliminated within 3-7 days. Three-way
analysis of variance showed that treatment durations had a significant effect but there was no
significant difference in either static or exchange of both freshwater and 10 ppt brackish water.
Exchanged freshwater would be the most suitable method used for reducing off-flavour of Nile
tilapia in inland fish culture |
| Year | 1995 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Yakupitiyage, Amararatne;Little, David C.
|
| Examination Committee(s) | Lin, Chang Kwei
|
| Scholarship Donor(s) | Denmark (1988)
|
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1995 |