QUALITY OF GELATIN EXTRACTED FROM SKIN OF DOMINANT RAY FISHES OF THE PERSIAN GULF

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JALILI S.H.

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Journal: Iranian Scientific Fisheries Journal Year:2004 | Volume:13 | Issue:3 Page(s): 55-68

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Title

QUALITY OF GELATIN EXTRACTED FROM SKIN OF DOMINANT RAY FISHES OF THE PERSIAN GULF

Author(s)

JALILI S.H. | Issue Writer Certificate

Keywords

GELATINQ2

RAYS SKINQ4

PERSIAN GULFQ3

Abstract

Rays have high stocks in the PERSIAN GULF and Oman Sea, and are caught as by-catch in different fishing gears. Yield and Quality of GELATIN extracted from the skin of dominant ray species of PERSIAN GULF, included: Butterfly ray (Gymnura poecilura), Sting ray (Himantrura gerrardi), Honeycomb Sting ray (Himantura uarnak) and Eagle ray (Aetomylaeus maculatus), were studied. Biometric results and the mean of skinning yield for each species were reported. Skinning yield for Eagle ray was 3.2% that was significantly lower than other species (with > 60%). GELATIN, extraction was done in constant conditions by Chloridric acid pretreatment. The results of qualitative identification of samples were positive and according to standards, concluded that the extracted products were GELATIN. Also, total nitrogen, humidity and pH of samples were in standard limits, but ash content was upper than maximum standard level. Minimum concentration of extracted GELATINs for gel formation was 2% and no significant differences were observed between extracted GELATIN samples. Melting temperature of rays GELATINs ranged 20-25°C.Maximumand minimum yield of GELATIN extraction yield were 20.4% and 19.0%, respectively. No significant difference were observed between GELATIN extraction yield of four ray species (P>0.05). Results suggested that for industrial uses, the skin of different ray species can be mixed and use together.

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APA: Copy

JALILI, S.H.. (2004). QUALITY OF GELATIN EXTRACTED FROM SKIN OF DOMINANT RAY FISHES OF THE PERSIAN GULF. IRANIAN SCIENTIFIC FISHERIES JOURNAL, 13(3), 55-68. SID. https://sid.ir/paper/4354/en

Vancouver: Copy

JALILI S.H.. QUALITY OF GELATIN EXTRACTED FROM SKIN OF DOMINANT RAY FISHES OF THE PERSIAN GULF. IRANIAN SCIENTIFIC FISHERIES JOURNAL[Internet]. 2004;13(3):55-68. Available from: https://sid.ir/paper/4354/en

IEEE: Copy

S.H. JALILI, “QUALITY OF GELATIN EXTRACTED FROM SKIN OF DOMINANT RAY FISHES OF THE PERSIAN GULF,” IRANIAN SCIENTIFIC FISHERIES JOURNAL, vol. 13, no. 3, pp. 55–68, 2004, [Online]. Available: https://sid.ir/paper/4354/en

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