Title Page
Contents
Abstract 10
1. Introduction 12
2. Materials and Methods 16
2.1. Fish collection and preparation 16
2.2. Experimental design 16
2.3. Determination of moisture content 19
2.4. Determination of weight loss 19
2.5. Determination of trimethylamine 20
2.6. Determination of volatile basic nitrogen 20
2.7. Statistical analysis 21
3. Results and Discussion 22
3.1. Moisture content of drying processing of Gwamegi 22
3.2. Weight loss of drying processing of Gwamegi 32
3.3. Volatile basic nitrogen of drying processing of Gwamegi 40
3.4. Response surface modeling for TMA standard on Gwamegi 48
4. Conclusion and Recommendations 59
References 60
Table 1. Independent variables of the process and their corresponding levels 17
Table 2. Experimental coded and uncoded values utilized for the full-factorial... 18
Table 3. Results of moisture content of the drying process of Gwamegi 26
Table 4. Result of statistical analyses for moisture content 27
Table 5. Coefficient regression model estimated by multiple regression analysis... 28
Table 6. Results f weight loss of the drying process of Gwamegi 35
Table 7. Result of statistical analysis for weight loss 35
Table 8. Coefficient regression model estimated by multiple regression analysis... 36
Table 9. Results of volatile basic nitrogen for drying process of Gwamegi 42
Table 10. Result of statistical analysis for volatile basic nitrogen 43
Table 11. Coefficient regression model estimated by multiple regression analysis for... 44
Table 12. Response surface results for TMA peak-area of Gwamegi 51
Table 13. Result of statistical analysis for TMA peak-area 52
Table 14. Results showing the secondary model from table 12 52
Table 15. Results of statistical analysis of the independent variables obtained from... 53
Table 16. Coefficient regression model estimated by multiple regression analysis for... 54
Figure 1. Relationship between temperature (℃) and time (hrs) on... 29
Figure 2. Relationship between temperature (℃) and cycle (no.) on moisture content... 30
Figure 3. Relationship between time (hrs) and cycle (no.) on moisture content (%) of... 31
Figure 4. Relationship between temperature (℃) and time (hrs) on weight loss (%) of... 37
Figure 5. Relationship between temperature (℃) and cycle (no.) on weight loss (%)... 38
Figure 6. Relationship between time (hours) and cycle (no.) on weight loss (%) of... 39
Figure 7. Relationship between temperature (℃) and time (min.) on VBN of... 45
Figure 8. Relationship between time (min.) and drying cycle (no.) on VBN of... 46
Figure 9. Relationship between temperature (℃) and drying cycle (no.) on VBN of... 47
Figure 10. Relationship between temperature (℃) and time (min) on TMA of... 55
Figure 11. Relationship between time (min) and concentration (mL) on TMA of... 56
Figure 12. Relationship between concentration (mL) and NaOH (%) on TMA of... 57
Figure 13. Relationship between temperature (℃) and NaOH (%) on TMA of... 58