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  • 1
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    Proximate composition and sensory analysis of African catfish (Clarias gariepinus) harvested from different sources in Ondo State, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24088 | 19325 | 2018-05-12 14:29:17 | 24088 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Proximate composition and sensory evaluation of Africa catfish Clarias gariepinus harvested from earthen ponds, reservoir system, tank flow - through system and Flow Rivers were determined. Chemical assessment was based on the method of analysis of the Association of Official Analysis (AOAC). The samples collected shows moisture content 71.71~c1.65%, 74.20~c1.39, 73.60~c2.3% and 72.29~c68% from earthen ponds, reservoirs, and tank flow- through system and rivers respectively. The crude protein 9.77~c2.66%, 20.99~c0.68, 19.80~c0.53% and 18.84~c1.00% from earthen ponds, reservoir system, tank flow- through system and rivers respectively. There was no significant difference (p〉0.05) among the means recorded and the locations where the fish samples were collected has no effect on the value of the moisture and the crude protein content of the fish samples when compared. Crude fat contents 5. 68~c0. 81 %, 4.95~c0.38%, 3.85~c0.56% and 1.35~c0. 29%from reservoir system, low through system, earthen ponds, and rivers respectively. Ash content of the fish samples were 1.52~c0.40%, 1.49~c0.40%, 2.23~c0.91 % and 1.47~c0. 60% from earthen ponds, reservoir system, tank flow- through system and rivers respectively. There was a significant difference (p 〈0.05) among the means of the crude fat contents and ash contents. The location where the fish samples were collected influenced the means of the ash content and the crude fat contents. The taste, odour, appearance and texture were the indices for the evaluation. Fish from rivers were most preferred followed by earthen ponds, reservoirs system and tank flow- through system respectively.
    Description: Includes: 4 tables and 1 figure;Also includes: 15 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; Ondo State ; Reservoir ; Tank flow-through ; River ; Earthen pond ; freshwater environment ; Aquaculture ; Chemical composition ; Fish ; Sense organs ; Evaluation ; Water content ; Lipids
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 131-134
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  • 2
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    Effects of freezing on the proximate composition and sensory quality of stored African catfish (Clarias gariepinus) and tilapia (Oreochromis niloticus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24189 | 19325 | 2018-05-16 14:59:40 | 24189 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The objective of this study was to determine the quality deterioration of African catfish Clarias gariepinus and Tilapia, Orechromis niloticus stored at-4~'C for 8 weeks. Weekly analysis was conducted to measure protein, moisture, crude fat and ash content and evaluation of the sensory quality. The result clearly reveals that during storage, both the samples showed a highly significant (p〈0.05) decreasing trend in protein, lipid, ash and moisture content. The result shows that protein, moisture, fat and ash content of the fish samples decreases with increasing duration of frozen storage. The fresh samples has the highest value of protein, moisture, fat and ash content while the least value was recorded on the 8th week. 19.98 ~c 2.66%, 80.71 ~c 1.65%, 3.92 ~c 0.5% and 2.52 ~c were recorded for freshly prepared Clarias gariepinus respectively while 12.62 ~c 1.22%, 66.86 ~c 0.68%, 1.08 ~c 1.04% and 1.14 ~c 0.33% were recorded on the 8th week respectively. 20.80 ~c 1.46, 60.75 ~c 2.50, 9.75 ~c 2.50% and 5.85 ~c 2.51% were recorded for freshly prepared Oreochromis niloticus respectively while 25.05 ~c 2.20%, 47.60 ~c 2. 15%, 7.1 ~c 0.20 and 3.00 ~c 2.10% were recorded on the 8th week respectively. After 8 weeks, the total decrease was 7.36%, 13.85%, 2.84% and 1.38% respectively for Clarias gariepinus and 3.75%, 13.45%, 2.65% and 2.85% respectively for Oreochromis niloticus. Sensory evaluation of the fish samples revealed that quality, texture, colour, odour, aroma and taste decrease with increasing duration of storage and best quality obtained when freshly prepared.
    Description: Includes: 4 tables.;Also includes: 11 references
    Keywords: Fisheries ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Owo ; Frozen ; Fish ; Quality ; Sensory ; Evaluation ; Processing ; freshwater environment ; Chemical composition ; Freshwater fish ; Receptors ; Deterioration ; Quality assurance ; Fish storage ; Freezing storage ; Nutritive value ; Microorganisms ; Enzymatic activity ; Processing fishery products ; Storage effects ; Organoleptic properties ; Temperature effects
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 155-157
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  • 3
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    Comparative study of proximate composition of oil extracted from African catfish (Clarias gariepinus) viscera and red palm oil (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24659 | 19325 | 2018-05-27 14:54:42 | 24659 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The proximate and fatty acid composition of oil extracted from catfish viscera C. gariepinus and red palm oil was carried out in this study, fish oil was extracted using wet rendering method. The result of the proximate composition shows moisture content of 64.81 ~c 2.37% for catfish viscera and 5.75 ~c 1.40% for red palm oil, protein content 16.40 ~c 2.66% for catfish viscera and 3.27 ~c 0.11% for red palm oil, ash content 120 ~c 0.20% and 1.04 ~c 0.30% for catfish ~c 0.10% and 50.40 ~c 0.84%, peroxide value (PV) 16.60 ~c 0.40 and 1.0 ~c 0.42% and iodine value (IV) 140.05 ~c 0.14% and 51.07 ~c 0.47% for catfish viscera and red palm oil respectively. There was significant difference (p〈 0.05) among the means of moisture, protein, lipid, PV and IV but the ash content shows no significant difference (p〈 0.05). The result of the fatty acids composition shows that red palm oil has the highest saturated palmitic acid and mono-unsaturated oleic acid 44.29% and 40.62% respectively. 10.20% palmitic acid and 6.20% oleic acid was observed in catfish oil. 3 3.26 and 8.59% linoleic acid, 1.40 and 0.40 stearic acid was observed in catfish oil and red palm oil rapeclively. Catfish oil shows dominant unsaturated linoleic and oleic acid, saturated palmitic acid and stearic acid. The result shows that catfish oil is rich in poly-unsaturated fatty acid (PUFA), which lower total serum cholesterol level.
    Description: Includes: 21 references.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; Catfish ; Viscera ; Palm oil ; Fatty acid ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 371-373
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