Yuszda K. Salimi, Robert Tungadi, Siti Aisa Liputo, Ahmad Kadir Kilo, Aliyaah Nadya Paramitha Rauf, Indah Badriawaty Dali
Sacha Inchi (Plukenetia volubilis L.) oil is increasingly recognized for its high polyunsaturated fatty acid content, particularly its balanced omega-3 and omega-6 ratio, making it a valuable ingredient in functional foods and nutraceuticals. However, the choice of extraction method significantly affects its physicochemical properties, bioactive compound retention, and oxidative stability. This study aims to compare the effects of hydraulic press (SIOP) and Soxhlet extraction (SIOS) methods to determine the most effective technique for preserving the nutritional integrity of Sacha Inchi oil and its by-products. The study assessed oil density, refractive index, moisture content, peroxide value, and acid value, employing gas chromatography for fatty acid composition and high-performance liquid chromatography for amino acid profiling. SIOP was obtained through mechanical pressing without solvents, while SIOS involved continuous solvent reflux. The press cakes (SIOPC and SIOSC) were analyzed for protein and fiber content. Results showed that SIOP exhibited superior oil quality, with lower peroxide values (2.31 mEq O₂/kg), higher α-linolenic acid content (46.77 %), and greater antioxidant activity (IC50: 104.05 mg/mL) compared to SIOS. Additionally, SIOPC retained more protein and antioxidants, highlighting its potential as a functional food ingredient. Our findings highlight the trade-offs between oil quality and yield. SIOP retains more polyunsaturated fatty acids and antioxidants, making it ideal for high-quality oil, while SIOS achieves higher yield but compromises bioactive retention. These insights help industries select the most suitable extraction method based on quality or efficiency priorities. © 2025, Walailak University. All rights reserved.
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Gorontalo, Gorontalo, 96554, Indonesia; Department of Pharmacy, Faculty of Sport and Health, Universitas Negeri Gorontalo, Gorontalo, 96115, Indonesia; Department of Food Science and Technology, Faculty of Agriculture, Universitas Negeri Gorontalo, Gorontalo, 96554, Indonesia
Research at a Glance
Register to unlock
Topics & SDG Alignment
Register to unlock
Collaboration
Register to unlock
Author Profile (Selected)
Register to unlock
References Overview
Register to unlock
Journal & Source
Register to unlock
Metadata & Integrity
Register to unlock