Araştırma Makalesi

Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay

Cilt: 43 Sayı: 4 31 Ağustos 2026
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Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay

Öz

Industrial logistics and unavoidable processing delays frequently hinder the valorization of aquaculture by-products into high-value lipids. The current study evaluated the feasibility of a solvent-free centrifugal extraction technique for the recovery of fish oil from European seabass (Dicentrarchus labrax) fillet by-products (head, skeleton, and internal organs), following a standard 48-hour cold storage delay typical in industrial processing. The by-products were homogenized with water at 50 °C and subsequently centrifuged at 4000 × g for 25 minutes. This solvent-free extraction technique yielded 8.12% free liquid oil, corresponding to a lipid recovery efficiency of 63.36%. Gas chromatography analysis demonstrated that the recovered oil contained substantial levels of docosahexaenoic acid (DHA) and total polyunsaturated fatty acids, representing a valuable nutritional profile. However, an accumulation of primary oxidation products was observed following the 48-hour pre-processing delay, with peroxide values exceeding permissible limits in both the solvent-free (27.99±3.99 meq O2/kg) and solvent-assisted (22.67±1.15 meq O2/kg) oils. Conversely, the free fatty acids (6.77±0.08% oleic acid) and p-anisidine value (4.29±0.26) remained within acceptable ranges. These findings demonstrate that while solvent-free centrifugation is effective for recovering PUFA-rich lipids, the inherently high pro-oxidant content of seabass by-products highlights the importance of immediate, on-site processing to prevent rapid oxidative degradation. Consequently, this study establishes critical logistical baselines for circular economy implementations in the seafood processing sector.

Anahtar Kelimeler

Destekleyen Kurum

Ege University Scientific Research Projects Coordination

Proje Numarası

Grant number: 30767

Etik Beyan

Ethics committee approval is not required since lifeless commercial fish by-products were used.

Kaynakça

  1. Abdollahi, M., & Undeland, I. (2020). A novel cold biorefinery approach for isolation of high-quality fish oil in parallel with gel-forming proteins. Food Chemistry, 332, 127294. https://doi.org/10.1016/j.foodchem.2020.127294
  2. AOAC (2000). Official methods of analysis of the Association of Official Analytical Chemists, 17th edn. In Horwitz W (Ed.).
  3. AOAC (2006). Official Methods of Analyses, Method 935.47. Association of Official Analytical Chemists
  4. AOCS (1997). Official methods and recommended practices of the American Oil Chemists Society. AOCS Press, Ca- 5a-40.
  5. AOCS (1998). Official methods and recommended practices of the American Oil Chemists Society. AOCS Press, Cd 18-90.
  6. AOCS (2003). Official methods and recommended practices of the American Oil Chemists Society. AOCS Press, Cd 8-53.
  7. AOCS (2006). Official methods and recommended practices of the American Oil Chemists’ Society. AOCS Press, Ch5-91.
  8. Bligh, E.G., & Dyer, W.J. (1959). A rapid method of total lipid extraction and purification. Canadian Journal of Biochemistry and Physiology, 37, 911-917. https://doi.org/10.1139/y59-099

Ayrıntılar

Birincil Dil

İngilizce

Konular

Atık Yönetimi, Azaltma, Yeniden Kullanım ve Geri Dönüşüm, Gıda Mühendisliği, Avlanma Sonrası Balıkçılık Teknolojileri (Ulaşım dahil)

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

31 Ağustos 2026

Gönderilme Tarihi

26 Haziran 2026

Kabul Tarihi

12 Ağustos 2026

Yayımlandığı Sayı

Yıl 2026 Cilt: 43 Sayı: 4

Kaynak Göster

APA
Erdem, Ö. A., & Demirtaş Erol, N. (2026). Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay. Ege Journal of Fisheries and Aquatic Sciences, 43(4), 341-350. https://doi.org/10.12714/egejfas.43.4.03
AMA
1.Erdem ÖA, Demirtaş Erol N. Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay. EgeJFAS. 2026;43(4):341-350. doi:10.12714/egejfas.43.4.03
Chicago
Erdem, Ömer Alper, ve Nida Demirtaş Erol. 2026. “Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay”. Ege Journal of Fisheries and Aquatic Sciences 43 (4): 341-50. https://doi.org/10.12714/egejfas.43.4.03.
EndNote
Erdem ÖA, Demirtaş Erol N (01 Ağustos 2026) Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay. Ege Journal of Fisheries and Aquatic Sciences 43 4 341–350.
IEEE
[1]Ö. A. Erdem ve N. Demirtaş Erol, “Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay”, EgeJFAS, c. 43, sy 4, ss. 341–350, Ağu. 2026, doi: 10.12714/egejfas.43.4.03.
ISNAD
Erdem, Ömer Alper - Demirtaş Erol, Nida. “Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay”. Ege Journal of Fisheries and Aquatic Sciences 43/4 (01 Ağustos 2026): 341-350. https://doi.org/10.12714/egejfas.43.4.03.
JAMA
1.Erdem ÖA, Demirtaş Erol N. Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay. EgeJFAS. 2026;43:341–350.
MLA
Erdem, Ömer Alper, ve Nida Demirtaş Erol. “Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay”. Ege Journal of Fisheries and Aquatic Sciences, c. 43, sy 4, Ağustos 2026, ss. 341-50, doi:10.12714/egejfas.43.4.03.
Vancouver
1.Ömer Alper Erdem, Nida Demirtaş Erol. Feasibility and quality constraints of solvent-free fish oil recovery from European seabass (Dicentrarchus labrax) by-products following a 48-hour cold storage delay. EgeJFAS. 01 Ağustos 2026;43(4):341-50. doi:10.12714/egejfas.43.4.03