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Extraction of oil from fish and their by-products and studying their chemical properties - Iodine Number – | ||
| journal of kerbala university | ||
| Article 1, Volume 7, Issue 3, 2011, Pages 1057-1063 PDF (0 K) | ||
| Abstract | ||
| Four kinds of fish were used in this study: Bigeye Ilisha megaloptera ,Jaffout Nematalosa nasus,Suboor Tenualosa ilisha and Carp Cyprinus carpio. They were in complet,without heads and viscerals and its by-prouduct.All those samples were in tow types of condition (fresh and frozen).The four kinds of fish were purchas from local market in Basrah city at the south Iraq, The complet fishes after were reached to the laboratory and after they were frozen for one month at -20C°. and analysis the degree of freshness through iodine number. The percent extercd oil for whole fish,fish without head and viscerals and by-produect were (6.08,4.16,4.59)%, (5.86, 3.88,4.22)% consecutively form fresh and frozen Bigeye; (10.71,7.85,7.87)%, (10.18, 2.26, 7.29)% consecutively form fresh and frozen Jaffout; (13.52,11.85,15.98)% , (13.01, 11.25, 15.29)% consecutively form fresh and frozen Suboor and (5.61, 5.68, 7.22)%, (5.16, 5.18, 7.08)% consecutively form fresh and frozen Carp as well as (14.25, 9.62 ,3.56)% and (13.85, 7.75, 1.07)%, for mixture of full, without heads and vescera and by-prodect for four kinds of fish. Crud oils were compared with vegetable oil (olive oil) and animal fat (mutton tial fat mutton). Results were analyzed statistically by using the SPSS program with using (CRD) Completely Randomized Design for dipilcates. The study factors were tested by using Revised Least Significant Different test (R-L.S.D) under significal level (0.05). Results were as fallowed: It was observed that type of fish, type of treatment, shape of sample, introdaction between type of treatment and shapes of fishs and source of oil have unsignificant difference on iodine number.The results also showed that The introdaction between type of fish and shapes of fishs effect of tri-introdaction aming type of fish ,type of treatmen and shape of fish has significant difference. | ||
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