Jurnal Penelitian Pendidikan IPA (JPPIPA)
Vol 11 No 11 (2025): November: In Progress

Optimization of Wet Rendering and Alkali Neutralization for Omega-3-Rich Oil Production from Milkfish (Chanos chanos)

Ahmad, Ilham (Unknown)
Saleh, Rahmawati (Unknown)
Fattah, Nurlaeli (Unknown)
Muhtar, Imran (Unknown)
Luthfiah (Unknown)



Article Info

Publish Date
25 Nov 2025

Abstract

This study addresses the instability, off-flavors, and variable quality that limit the use of fish oil as an omega-3 source, particularly from milkfish (Chanos chanos). The research aims to produce omega-3-rich milkfish oil that meets international quality standards and is suitable for microencapsulation. Fresh milkfish was processed using wet rendering at four temperatures (70, 80, 90, and 100°C) and three heating times (30, 40, and 60 min). The crude oil was then refined by alkali neutralization with different NaOH concentrations. Oil yield and oxidative quality parameters—peroxide value, p-anisidine value, total oxidation (TOTOX), and acid value—were measured and analyzed using factorial ANOVA. The highest yield (0.29%) was obtained at 100°C for 60 min. Peroxide and anisidine values (3.44 and 11.75 meq/kg) and TOTOX (<20 meq/kg) complied with International Fish Oil Standards, whereas acid values (2.43–2.68 mg KOH/g) exceeded the limit at prolonged high-temperature extraction. These results indicate that higher temperatures increase oil recovery but promote hydrolytic degradation. Careful optimization of time and temperature is therefore required to obtain stable, high-quality omega-3 milkfish oil for further microencapsulation and application in health-oriented food products.

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Journal Info

Abbrev

jppipa

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

Description

Science Educational Research Journal is international open access, published by Science Master Program of Science Education Graduate Program University of Mataram, contains scientific articles both in the form of research results and literature review that includes science, technology and teaching ...