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  • Proteins  (8)
  • Freshwater  (4)
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  • 1
    Publikationsdatum: 2021-05-19
    Beschreibung: 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.
    Beschreibung: Published
    Schlagwort(e): Processing fishery products ; Ash content ; Fish fillets ; Fish culture ; Cyprinus carpio ; Moisture ; Mathematical models ; Filletting ; Lipids ; Freshwater fish ; Nutrition ; Grading ; Energy ; Proteins ; Fish ; Seafood ; Size ; Freshwater
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.27-38
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2021-05-19
    Beschreibung: 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.
    Beschreibung: Published
    Schlagwort(e): Fish disease ; Cyprinus carpio ; Methods ; Common carp ; Shelf-life ; Conventional surimi ; Acid and alkaline process ; Frozen storage ; Proteins ; Chemical
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp. 311-332
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2021-05-19
    Beschreibung: Some biochemical characteristics of common carp (Cyprinus carpio) and silver carp (Hypophtalmichthys moltrix) surimi prepared by a conventional washing method and protein isolated using alkaline-acid-aided processes were investigated. Solubility of protein in silver carp and common carp were found to be highest by using the conventional washing method. Decreases in myoglobin and lipid contents in both fish were found in the alkaline- or acid-aided process when compared to the conventional process (p〈0.05). The percentage of protein recovery with the alkaline- aided process of silver carp was highest. The whiteness score in the alkaline solubilization process was higher than acid solubilization process and conventional method in silver carp. This result was different than the result obtained in common carp. There was no significant difference between treatments regarding total sulfhydryl (SH) groups (p〉0.05). In protein patterns of Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), the lowest intensity of the myosin heavy chains (MHC) band was found in silver carp by the conventional washing process.
    Beschreibung: Published
    Schlagwort(e): Biotechnology ; Hypophtalmichthys moltrix ; Common carp ; Silver carp ; Acid- alkaline solubilization ; Recovery of protein ; Proteins ; Biochemical
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.583-597
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2021-05-19
    Beschreibung: The shelf-life of conventional surimi and isolated proteins that modified by acidic pH (2.5) and by using alkali pH (11) from silver carp (Hypophthalmichthys molitrix) was studied during months of storage at -18±2 °C. For conventional surimi, three washing steps were used. In the third stage of washing, 0.2% NaCl was used to withdraw more water. The result showed that isolated protein by alkaline pH has a higher efficiency. In the obtained result of percent yield and the recovery of protein product, isolated proteins showed higher values than conventional surimi. Isolated protein by using acid-aided processes had lower lightness and whiteness score, compared with alkaline-aided process and surimi prepared by a conventional washing method during frozen storage. The concentration of myosin heavy chain and actin were varied with solubilizing pH. Also, the lowest downfall of protein and the best surimi quality were found in produced samples with alkaline-acid aided process.
    Beschreibung: Published
    Schlagwort(e): Fish disease ; Hypophthalmichthys molitrix ; Silver carp ; Conventional surimi ; Acid-alkaline solubilization ; Shelf-life ; Frozen storage ; Proteins
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.281-300
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 2021-05-19
    Beschreibung: Using reference books, monitoring buyers behavior and interviewing the experts, the effective parameters on home consumption behavior of farmed fish were identified and compiled as a questionnaire. After the reliability and viability evaluation the questionnaire was filled randomly in the spring of 2008 for 295 households of different localities in Tehran. The allocation of questionnaires was conducted based on the proportion of population in each locality. The degree of importance of effective parameters and their priority were calculated by Friedman test. The results showed that, quality, taste, smell and protein content of grocery basket are the most important purchasing factors among Tehrani households. However, those who use only farmed fish or those who do not use fish at all, after quality, smell has the highest importance, and in the fourth priority, instead of protein content of grocery basket, fish bone has higher effect. We suggest that to improve consumption of farmed fish, apart from quality, the strategies of deodorizing, taste improvement and decreasing fish bones, shall be taken into consideration during harvest, transport and fish processing.
    Beschreibung: Published
    Schlagwort(e): Processing fishery products ; Household statistics ; Marketing ; Fish culture ; Pisces ; Aquaculture economics ; Locations (working) ; Management ; Purchasing ; Quality ; Behaviour ; Taste ; Biomass ; Freshwater
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.87-96
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Publikationsdatum: 2021-05-19
    Beschreibung: To prepare common carp surimi, washing was done in different steps (1, 2 and 3 steps) and times (5, 10 and 15 minutes) and the treatments were tested statistically. The results showed that the 10 minutes washing for 3 times produced surimi that was superior to minced meat in color desirability (1 for surimi versus 7 for minced meat), odor desirability (2 versus 7), flavor desirability (0 versus 5.5) and on the general properties. The process of surimi production also increased water binding capacity from 0.14 to 0.64, pH from 6.21 to 7.34 and gel forming ability from A score to AA score. Tests of moisture content, protein, fat, ash, and total volatile nitrogenous bases (TVB-N) were performed on the samples of the minced meat and the selected treatment of the produced surimi. The extent of changes of these parameters were calculated and compared with available standards. We found that the common carp surimi lacks undesirable flavor and smell of fish and has suitable rheological properties for preparation of different kinds of fish paste products.
    Beschreibung: Published
    Schlagwort(e): Common carp ; Minced products ; Processed fishery products ; Cyprinus carpio ; Quality ; Fats ; Proteins ; Nitrogen compounds ; Ashes ; Freshwater
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.81-92
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Unbekannt
    In:  http://aquaticcommons.org/id/eprint/23630 | 18721 | 2018-07-13 10:08:57 | 23630 | Iranian Fisheries Science Research Institute
    Publikationsdatum: 2021-07-14
    Beschreibung: To prepare common carp surimi, washing was done in different steps (1, 2 and 3 steps) and times (5, 10 and 15 minutes) and the treatments were tested statistically. The results showed that the 10 minutes washing for 3 times produced surimi that was superior to minced meat in color desirability (1 for surimi versus 7 for minced meat), odor desirability (2 versus 7), flavor desirability (0 versus 5.5) and on the general properties. The process of surimi production also increased water binding capacity from 0.14 to 0.64, pH from 6.21 to 7.34 and gel forming ability from A score to AA score. Tests of moisture content, protein, fat, ash, and total volatile nitrogenous bases (TVB-N) were performed on the samples of the minced meat and the selected treatment of the produced surimi. The extent of changes of these parameters were calculated and compared with available standards. We found that the common carp surimi lacks undesirable flavor and smell of fish and has suitable rheological properties for preparation of different kinds of fish paste products.
    Schlagwort(e): Fisheries ; Quality ; Fats ; Proteins ; Nitrogen compounds ; Ashes ; Freshwater ; Common carp ; Minced products ; Processed fishery products ; Cyprinus carpio ; Golestan Province ; Iran
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 81-92
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    facet.materialart.
    Unbekannt
    In:  http://aquaticcommons.org/id/eprint/23833 | 18721 | 2018-07-27 16:43:29 | 23833 | Iranian Fisheries Science Research Institute
    Publikationsdatum: 2021-07-15
    Beschreibung: 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.
    Schlagwort(e): Fisheries ; Energy ; Proteins ; Regression Relationship ; common carp ; Cyprinus carpio ; Mazandaran Province ; Iran
    Repository-Name: AquaDocs
    Materialart: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 27-38
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Publikationsdatum: 2021-05-19
    Beschreibung: 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.
    Beschreibung: Published
    Schlagwort(e): Survey ; Nutritional ; Hypophthalmichthys nobilis ; PDdm index ; NP index ; Lipid ; Economic ; Values ; Sizes ; Productivity ; Fish breeding ; Fish ; Proteins ; Weight
    Repository-Name: AquaDocs
    Materialart: Journal Contribution , Refereed
    Format: pp.43-52
    Standort Signatur Erwartet Verfügbarkeit
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