Comprehensive analysis of the chemical content of tuna fish skin, including fatty acids, heavy metals, proximate content, and amino acids from Kendari, Indonesia

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Pubblicato in:Aquaculture, Aquarium, Conservation & Legislation vol. 18, no. 4 (Aug 2025), p. 1731-1743
Autore principale: Huli, La O
Altri autori: Pringgenies, Delianis, Dewi, Eko N, Riyadi, Putut H
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Bioflux SRL
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100 1 |a Huli, La O  |u Doctoral Program of Aquatic Resource Management, Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang, Indonesia; Department of Aquatic Product Technology, Faculty of Fisheries and Marine Sciences, Halu Oleo University, Kendari, Southeast Sulawesi, Indonesia 
245 1 |a Comprehensive analysis of the chemical content of tuna fish skin, including fatty acids, heavy metals, proximate content, and amino acids from Kendari, Indonesia 
260 |b Bioflux SRL  |c Aug 2025 
513 |a Journal Article 
520 3 |a The fishing and tuna processing industry in the waters of Kendari has been generating fish skin waste, which has been discarded so far. However, it has been found that tuna skin waste contains nutritional content similar to that of tuna meat. The research aimed to analyze the chemical content of tuna skin waste in Kendari, Indonesia, including fatty acids, heavy metals, proximate content and amino acids. The results revealed that Thunnus obesus (bigeye tuna) loin skin waste had the highest percentage of water content at 55.62%. The fish skin waste has a protein content of 26.175%, a fat content of 10.10%, and an ash content of 5.375%. Further analysis of the fatty acid profile of T. obesus loin skin waste revealed that it contains 6.32% unsaturated fat and 3.78% saturated fat. The dominant omega-9 fatty acid is oleic acid at 2.35%. Although it contains omega 6, arachidonic acid, linoleic acid, docosahexaenoic acid, linolenic acid, and eicosapentaenoic acid, each fatty acid does not exceed 1%. Additionally, the analysis showed that T. obesus loin skin waste has relatively low levels of heavy metals, with arsenic at 1.79%, lead at 0.36%, mercury at 0.6%, and cadmium at 0.03%. Nickel was not detected in this fish skin waste. Meanwhile, analysis of the protein content reveals that glycine has the highest level at 55,927.53 mg kg-1, followed by L-arginine, L-proline, and L-glutamic acid. However, based on the phytochemical analysis results, flavonoid, phenolic, and saponin compounds were not detected in the skin waste. Thus, the skin waste of T. obesus loin in Kendari, Indonesia, has nutritional value and is relatively low in heavy metal content. Therefore, the skin of this fish can be further utilized as a nutritious food source, similar to tuna fish meat. 
651 4 |a Indonesia 
653 |a Mercury 
653 |a Glutamic acid 
653 |a Arginine 
653 |a Amino acids 
653 |a Fish 
653 |a Nickel 
653 |a Phytochemicals 
653 |a Heavy metals 
653 |a Fish skin 
653 |a Cadmium 
653 |a Arachidonic acid 
653 |a Scientific imaging 
653 |a Moisture content 
653 |a Chromatography 
653 |a Tuna 
653 |a Meat 
653 |a Saponins 
653 |a Proteins 
653 |a Linolenic acid 
653 |a Linoleic acid 
653 |a Fatty acids 
653 |a Arsenic 
653 |a Proline 
653 |a Oleic acid 
653 |a Processing industry 
653 |a Glycine 
653 |a Docosahexaenoic acid 
653 |a Water content 
653 |a Flavonoids 
653 |a Ash content 
653 |a Eicosapentaenoic acid 
653 |a Fish oils 
653 |a Nutritive value 
653 |a Marine fishes 
653 |a Nutrient content 
653 |a Mass spectrometry 
653 |a Food sources 
653 |a Raw materials 
653 |a Heavy metal content 
653 |a Body condition 
653 |a Fishing 
653 |a Phenolic compounds 
653 |a Thunnus obesus 
653 |a Environmental 
700 1 |a Pringgenies, Delianis  |u Faculty of Fisheries and Marine Science, Diponegoro University, Tembalang, Semarang, Central Java, Indonesia 
700 1 |a Dewi, Eko N  |u Faculty of Fisheries and Marine Science, Diponegoro University, Tembalang, Semarang, Central Java, Indonesia 
700 1 |a Riyadi, Putut H  |u Faculty of Fisheries and Marine Science, Diponegoro University, Tembalang, Semarang, Central Java, Indonesia 
773 0 |t Aquaculture, Aquarium, Conservation & Legislation  |g vol. 18, no. 4 (Aug 2025), p. 1731-1743 
786 0 |d ProQuest  |t Environmental Science Database 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/3253872924/abstract/embedded/L8HZQI7Z43R0LA5T?source=fedsrch 
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