Microbial, chemical, textural and sensory properties of coated rainbow trout by chitosan combined with pomegranate peel extract during frozen storage
| Autor: | Seyed Shahram Shekarforoush, Saeid Hosseinzadeh, Giampiero Barbieri, Enayat Berizi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Biochemistry
Chitosan chemistry.chemical_compound 0404 agricultural biotechnology Coated Materials Biocompatible Structural Biology Food Preservation Freezing Botany Animals Food science Psychrophile Molecular Biology Lythraceae biology Plant Extracts 04 agricultural and veterinary sciences General Medicine biology.organism_classification 040401 food science Lactic acid Food Storage chemistry Distilled water Oncorhynchus mykiss Taste Rainbow trout Frozen storage Bacteria |
| Zdroj: | International Journal of Biological Macromolecules. 106:1004-1013 |
| ISSN: | 0141-8130 |
| DOI: | 10.1016/j.ijbiomac.2017.08.099 |
| Popis: | The current study was aimed to investigate the combined effects of chitosan (Ch) and pomegranate peel extract (PPE) on the overall quality of rainbow trout (Oncorhynchus mykiss) during the frozen storage. Fresh gutted fishes were dipped for 60s either in sterile distilled water (Control) or in chitosan combined with 0 (Ch), 1% (Ch+PPE1), 2% (Ch+PPE2), or 4% (Ch+PPE4) (w/v) PPE. Microbial, chemical, textural and sensory properties of the samples were intermittently checked during six months. At the end of storage, the highest and lowest values of psychrophilic, lactic acid bacteria and mold counts in the control and Ch+PPE4 groups were respectively, 5.14±0.19, 2.91±0.00; 3.11±0.03, 0.33±0.57 and 2.86±0.19, 2.24±0.13. Our results showed the best performance to prevent the oxidation of fats and protein was in the chitosan combined with 4% PPE, however, due to its undesirable color, the chitosan combined with 2% PPE was preferred. A considerable improvement in the chemical, microbial, sensory and textural properties was shown in the Ch+PPE2 groups. Therefore, this active coverage was suggested as safe to store rainbow trout up to 6 months frozen storage. |
| Databáze: | OpenAIRE |
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