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  • Cyprinus carpio  (8)
  • Proteins  (8)
  • Common carp  (6)
  • Freshwater  (4)
  • Frozen storage  (4)
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  • 11
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    Chemical changes and shelf-life of conventional surimi and proteins recovered using pH change method from common carp (Cyprinus carpio) muscle during 5 months storage at -18ºC (2021)
    In:  http://aquaticcommons.org/id/eprint/22868 | 18721 | 2018-05-30 22:48:15 | 22868 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-11
    Description: Chemical changes and shelf-life of common carp (Cyprinus carpio) surimi prepared by conventional washing method and solubilization by acid and alkali processes were investigated during 5 months of storage at -18 °C. Results showed that surimi produced with acid and alkaline solubilization is significantly higher yield than the conventional surimi. Protein solubilization by using acid and alkaline process was high compared with conventional method during storage in freezer except in the first month. Gel electrophoresis patterns showed a significant difference in hydrolyzing of myosin and actin proteins that was observed with increasing storage time. Surimi samples prepared by conventional method indicated more hydrolization, especially in the light chain of myosin during frozen storage. Evaluating the color characteristics (L*, a*, b*) of surimi samples showed that protein produced by using of pH 11 has the highest lightness after conventional surimi. Also, more whiteness in surimi prepared by conventional method was due to effective removal of myoglobin during washing. At zero month, total fat in the surimi samples prepared with acid and alkaline process was low than the surimi samples prepared by conventional method that it can intent to shelf-life increase and health of the product during storage.
    Keywords: Chemistry ; Fisheries ; Common carp ; Shelf-life ; Conventional surimi ; Acid and alkaline process ; Frozen storage ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 311-332
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  • 12
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    Seasonal variation of chemical composition and fatty acid profile of ovary in wild common carp (Cyprinus carpio) of southeastern Caspian Sea (2021)
    In:  http://aquaticcommons.org/id/eprint/23776 | 18721 | 2018-07-27 13:25:54 | 23776 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: Chemical composition and fatty acid profile of common carp's gonad (ovary) were assessed. Protein, lipid, fatty acid profile and moisture content were determined during 4 seasons’ summer, autumn, winter in 2007 and spring in 2008. For each season 10 samples were examined. Average of gonadosomatic index in wild common carp was 7.53 ±5.02. Proximate composition of ovary during the study period showed the lipid at 8.06 ±2.20; protein at 23.26 ±4.85; and moisture at 67.12 ±3.85. The results showed lipid content of wild fish ovary increased from summer to spring (summer 6.875 ±0.53; autumn 7.07 ±2.12; winter 7.96 ±1.22; spring 9.44 ±3.62), protein content also increased from summer to spring (summer 12.920.09; autumn 23 ±1.32; winter 25.16 ±0.63; spring 27.11 ±0.63), moisture content decreased in this period (summer 75.235 ±1.75; autumn 68.25 ±2.28; winter 65.685 ±0.40; spring 63.43 ±0.11). Significant differences (P0.05). Saturated and polyunsaturated fatty acids increased from summer to spring (spawning season). The major fatty acids identified in common carp ovary were Oleic (C18:1), palmitic (C16:0), Docosahexanoic acid (C22:6 DHA), Palmitoleic (C16:1), Arachidonic, AA (C20:4), Stearic (C18:0), Eicosapentaenoic acid (C20:5 EPA) and Linoleic (C18:2) in all seasons. Lipid, protein and omega 3 PUFA increased during gonad maturation. It seems that these resources of energy are necessary for embryogenesis.
    Keywords: Biology ; Cyprinus carpio ; Ovary ; Fatty Acid ; Iran ; Caspian Sea ; Caspian Sea Eurasia
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 151-160
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  • 13
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    Fillet quality grading of common carp (Cyprinus carpio) by fish size using mathematical equations (2021)
    In:  http://aquaticcommons.org/id/eprint/23833 | 18721 | 2018-07-27 16:43:29 | 23833 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: Quality grading and nutrition value determination of fish are nowadays necessary for aquatic processing. The present study was conducted to investigate a new, applied and cheap method of fillet quality grading for common carp (Cyprinus carpio) using fish size, based on mathematical equations. For this reason, 61 specimens of cultured market size carp were used and after filleting, their moisture, lipid, protein, energy and ash content were measured. Then, the relationships between proximate composition components of fillet and fillet length were studied. Results showed that there is an inverse linear regression relationship between logarithm of moisture content and logarithm of fish length (P〈0.05). The results also showed that there is a positive linear regression relationship between logarithm of lipid and energy content and logarithm of fish length (P〈0.05). No significant relationship was found between logarithm of fillet protein and ash content and logarithm of fish length (P〉0.05). Regarding the relationship between proximate composition of cultured carp fillets and fillet length machine fish sorting based on fish length and grading of moisture, lipid and energy content is feasible. We also found it feasible to determine type of processing and proximate composition of the prepared common carp.
    Keywords: Fisheries ; Energy ; Proteins ; Regression Relationship ; common carp ; Cyprinus carpio ; Mazandaran Province ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 27-38
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  • 14
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    Survey of nutritional and economic values of bighead (Hypophthalmichthys nobilis) in various sizes (2017)
    Details
    Publication Date: 2021-05-19
    Description: Cultured fish are presented in various sizes and prices in market. The present study aimed to investigate the proportion of nutritional value and price of various weight groups of bighead (Hypophthalmichthys nobilis) and to offer two indices for comparing nutritional value in proportion with fish prices. For this purpose, bighead specimens were prepared in market sizes and their dry matter, lipid, protein and ash content and fillet yield were determined. Then, the proportion of nutritional and financial value (NP) and justified price difference based on dry matter content (PDdm) were calculated for each weight group. The results showed that the light weight group has a higher NP index for dry matter, protein, ash and energy than medium and heavy weight group. The NP index was the same between medium and heavy groups. While the price difference between light weight and two other weight groups is more than calculated PDdm index, the light weight group is a proper choice for purchase.
    Description: Published
    Keywords: Survey ; Nutritional ; Hypophthalmichthys nobilis ; PDdm index ; NP index ; Lipid ; Economic ; Values ; Sizes ; Productivity ; Fish breeding ; Fish ; Proteins ; Weight
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.43-52
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