Mashayekhi, M. (2015) Effect of Menthe piperita L. extract on the shelf life of Hypophtalmichthys molitrix surimi during storage at 4°C. Masters thesis, University of Zabol.
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Abstract
One way to preserve fishery products is the use of essential oils and plant extracts. In this study, the effect of peppermint extract was evaluated on the shelf life of Surimi made from silver carp during storage at 4 ºC. For this purpose, fish were filleted, washed and minced by meat grinder and then Surimi was prepared by washing in three stages (first two stages washed with cold water and the last stage with cold water containing 0.3 % salt). Surimi were mixed with peppermint extract 1, 2/5 and 5% w/w. Chemical parameters (pH, TVB-N, PV, TBA) and microbial (TVC, PTC) were measured on days 0, 3, 6, 9, 12, 15 and 18. The results showed that the amount of ash and protein were significantly increased (P<0.05) in group 1 (control), group 2 (Surimi containing 1% peppermint extract), group 3 (Surimi containing 2.5% peppermint extract), group 4 (Surimi containing 5% peppermint extract). Moisture and fat content in all treatments was significantly decreased (p<0.05) after 18 days storage. The pH of the extract was significantly lower than the control (p<0.05), but during storage it showed a significant increase (p<0.05) in all treatments. Indicators of TVB-N, PV and TBA in treatment 2, 3 and 4 compared to control showed a significant decrease (p<0.05), but during storage a moderate increase was found in all treatments. Microbial test results also confirmed that the Total Bacteria Count (TVC) and bacteria cool (PTC) in the treatments contains extract that significantly decreased compared to control (p<05/0).The results showed that the treatments with peppermint extract had better quality compared to control treatment during cold storage (4 ° C).
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Antioxidant properties, extract, Menthe piperita L., Hypophthalmichthys molitrix |
| Subjects: | S Agriculture > SH Aquaculture. Fisheries. Angling |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 14 May 2016 08:55 |
| Last Modified: | 14 May 2016 08:55 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/581 |
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