|
|
|
| Prediction of Shelf-Life of Hairtail Fishmeal Based on Kinetic Model of Trimethylamine/Trimethylamine Oxide Molar Ratio |
| TANG Sen1,2, WU Guoyong1,2,*, ZHAO Haiyan1, ZHANG Yihao1,2, FANG Yilin1 |
| 1.College of Food and Biochemical Engineering, Guangxi Science and Technology Normal University, Laibin 546119, China; 2.Functional Food Ingredients Engineering Research Center, Guangxi Science and Technology Normal University, Laibin 546119, China |
|
|
|
|
Abstract The molar ratio of trimethylamine/trimethylamine oxide (TMA/TMAO molar ratio) was used as an indicator of the quality change and shelf life of hairtail fishmeal, and according to the results of sensory evaluation, a TMA/TMAO molar ratio of 0.406 4 was determined to represent the end of shelf life. The first order kinetic equation between TMA/ TMAO molar ratio and storage time (t) was established, and the Arrhenius equation between the rate constant of change of TMA/TMAO molar ratio (k) and storage temperature (T) was established in order to predict the shelf life of fishmeal at a given storage temperature. The results showed that the activation energy Ea for TMA/TMAO molar ratio change in the Arrhenius equation was 3.77 kJ/mol, and the pre exponential factor k0 was 10.11. The prediction model was established as follows:
|
|
|
|
|
|
|
|
|
|
|
2018, Vol. 32 
