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  • Rutilus frisii kutum  (4)
  • 1
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    Chemical and microbiological changes of salted Caspian Kutum (Rutilus frisii kutum) roe (2018)
    Details
    Publication Date: 2021-05-19
    Description: Salted Kutum roe was prepared by soaking in brine to a traditional procedure. Proximate composition (moisture, protein, lipid, pH, ash and salt content), total volatile basic nitrogen (TVB-N), fatty acid profiles and microbiological characteristics of raw and salted roe of Caspian white fish (Rutilus frisii kutum) were determined. The results indicated that protein and moisture contents were significantly higher in raw roe compared to salted one (28.81 and 61.07% to 23.99 and 51.57%, respectively). Significant differences in ash and salt contents were obtained among different treatments. TVB-N in all samples was less than 25mg/100g. The gas chromatography (GC) analysis showed that the major saturated fatty, monounsaturated fatty acids and poly unsaturated fatty acids were 16:0, 18:1n-9, and 22:6n-3, respectively. Aerobic plate count (APC) and Total Coliform Count (TC) in all samples were significantly higher (p〈0.05) in raw roe (5.33 logCFU/g and 210 MPN/g) compared to salted roe (1.23 log CFU/g and 1.2 MPN/g). None of the samples contained Escherichia coli, Salmonella, Clostridium perfringens or yeast.
    Description: Published
    Keywords: Biology ; Physiology ; Clostridium perfringens ; Salmonella ; Escherichia coli ; Caspian Kutum ; Rutilus frisii kutum ; Roe ; Salting ; Microbial population ; Chemical ; Microbiological
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.176-187
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  • 2
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    Study of genetic structure of Rutilus frisii kutum in Golestan province coastal waters using microsatellite markers (2018)
    Details
    Publication Date: 2021-05-19
    Description: To determine the genetic diversity of Rutilus frisii kutum, 25 samples were collected from Gharesou and Gorgan-rud rivers in April 2008. The genomic DNA was extracted from the caudal fin using phenol- chloroform method and investigated with 10 microsatellite loci. All the 10 investigated loci were polymorphic and showed variability in the two populations of the rivers. The mean number of allele per locus at population level and the observed heterozygosity ranged from 4 to 13 and 0.22 to 1.00, respectively. The FST value between populations was 0.014 (P〈0.05), and the analysis of genetic variation distribution indicated a very high within population variation (99%) while among population variation is low (1%). Highly significant deviation from hardy-Weinberg equilibrium was observed in both populations which can be attributed either to the presence of null alleles or to the genetic bottleneck. The results indicated a high level of genetic variation in this species and we concluded that there is more than one population of Rutilus frisii kutum in Golestan coastal waters.
    Description: Published
    Keywords: Fins ; Rutilus frisii kutum ; Brackish ; Variability ; DNA ; Genetic diversity ; Biopolymorphism ; Population number
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.151-156
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  • 3
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    Study of genetic structure of Rutilus frisii kutum in Golestan province coastal waters using microsatellite markers (2021)
    In:  http://aquaticcommons.org/id/eprint/23880 | 18721 | 2018-08-01 07:06:29 | 23880 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-15
    Description: To determine the genetic diversity of Rutilus frisii kutum, 25 samples were collected from Gharesou and Gorgan-rud rivers in April 2008. The genomic DNA was extracted from the caudal fin using phenol- chloroform method and investigated with 10 microsatellite loci. All the 10 investigated loci were polymorphic and showed variability in the two populations of the rivers. The mean number of allele per locus at population level and the observed heterozygosity ranged from 4 to 13 and 0.22 to 1.00, respectively. The FST value between populations was 0.014 (P〈0.05), and the analysis of genetic variation distribution indicated a very high within population variation (99%) while among population variation is low (1%). Highly significant deviation from hardy-Weinberg equilibrium was observed in both populations which can be attributed either to the presence of null alleles or to the genetic bottleneck. The results indicated a high level of genetic variation in this species and we concluded that there is more than one population of Rutilus frisii kutum in Golestan coastal waters.
    Keywords: Biology ; Rutilus frisii kutum ; microsatellite ; Genetic bottleneck ; Caspian Sea ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 151-156
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  • 4
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    Chemical and microbiological changes of salted Caspian kutum (Rutilus frisii kutum) roe (2021)
    In:  http://aquaticcommons.org/id/eprint/22765 | 18721 | 2018-05-21 18:25:04 | 22765 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-09
    Description: Salted kutum roe was prepared by soaking in brine to a traditional procedure. Proximate composition (moisture, protein, lipid, pH, ash and salt content), total volatile basic nitrogen (TVB-N), fatty acid profiles and microbiological characteristics of raw and salted roe of Caspian white fish (Rutilus frisii kutum) were determined. The results indicated that protein and moisture contents were significantly higher in raw roe compared to salted one (28.81 and 61.07% to 23.99 and 51.57%, respectively). Significant differences in ash and salt contents were obtained among different treatments. TVB-N in all samples was less than 25mg/100g. The gas chromatography (GC) analysis showed that the major saturated fatty, monounsaturated fatty acids and poly unsaturated fatty acids were 16:0, 18:1n-9, and 22:6n-3, respectively. Aerobic plate count (APC) and Total Coliform Count (TC) in all samples were significantly higher (p〈0.05) in raw roe (5.33 logCFU/g and 210 MPN/g) compared to salted roe (1.23 log CFU/g and 1.2 MPN/g). None of the samples contained Escherichia coli, Salmonella, Clostridium perfringens or yeast.
    Keywords: Biology ; Chemistry ; Fisheries ; Rutilus frisii kutum ; Roe ; Salting ; Microbial population ; Biology ; Physiology ; Caspian Sea ; Iran ; Chemical ; microbiological
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 176-187
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