| Autor: |
M. Li, Z.Q. Guan, D.J. Xie |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Chemical Engineering Transactions, Vol 55 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2283-9216 |
| DOI: |
10.3303/CET1655041 |
| Popis: |
Freeze-thaw placement in the drying process can reduce the average drying temperature of the sample. In order to speed up the drying process and maintain a good drying quality of dry tilapia fillets which were achieved in the condition of freeze-thaw cycles placement in a heat pump drying process, a series of dryingtests were studied by using the drying time points as the variables in drying process. Freeze-thaw parameters of 4-7 (twice placement) drying time point were optimized by L9(34) orthogonal experiment at 7th hours of drying. The results showed when freeze-thaw were placed into the process of heat pump drying processwhich could improve the quality of dried tilapia fillets effectively. The best quality indicators under optimal condition were as follows: The value of Ca2+-ATPase activity, rehydration rate, whiteness and hardness was2.75 µmol Pi/mg prot/h, 34.32 %, 38.87 and 10.0 N, respectively. The comprehensive score of optimizing process was 99.27. which has been improved 17% compared to the control sample. This result can provide a new low temperature drying technology and a reference for similar aquatic products. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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