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All Journal Jurnal Teknik Kimia USU Jurnal Teknik Kimia USU
Effendi Utomo
Universitas Jember
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Optimasi Ekstraksi Alginat dari Sargassum polycystum Menggunakan Sistem Cairan Dua Fase Berbantukan Gelombang Ultrasonik Berdasarkan Response Surface Methodology dan Pemodelan Kinetika Difusi Erica Wijaya; Effendi Utomo; Meta F Rizkiana; Yukti Nurani; Boy Fachri
Jurnal Teknik Kimia USU Vol. 15 No. 2 (2026): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v15i2.26295

Abstract

Sargassum polycystum has the potential to be a source of alginate for the food and pharmaceutical industries. This study aimed to optimise alginate extraction using an ultrasound-assisted aqueous two-phase system and model the extraction kinetics based on Fick's diffusion law. Extraction was conducted using 2-propanol and K₂HPO₄, with variations in extraction time, ultrasonic power, and solid-to-solvent ratio. Optimisation was performed using response surface methodology with Box-Behnken design. FT-IR and HPLC analyses confirmed the isolation of alginate. The actual alginate yield of 81.37% was achieved at a solid-to-solvent ratio of 0.04 g/mL, an extraction time of 20 min, and an ultrasonic power of 60% (390 Watts). The optimisation results predicted an alginate yield of 82.244%, with an R² value of 0.9960 for the RSM–Box–Behnken model. The experimental yield obtained from model validation was 81.93%, with a relative prediction error of 0.38%.   The kinetic model based on Fick's diffusion law yielded a De of 1.619×10-11 and an SSE of 0.006673, indicating excellent agreement between the model predictions and the experimental data.
Optimasi Ekstraksi Alginat dari Sargassum polycystum Menggunakan Sistem Cairan Dua Fase Berbantukan Gelombang Ultrasonik Berdasarkan Response Surface Methodology dan Pemodelan Kinetika Difusi Erica Wijaya; Effendi Utomo; Meta F Rizkiana; Yukti Nurani; Boy Fachri
Jurnal Teknik Kimia USU Vol. 15 No. 2 (2026): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v15i2.26295

Abstract

Sargassum polycystum has the potential to be a source of alginate for the food and pharmaceutical industries. This study aimed to optimise alginate extraction using an ultrasound-assisted aqueous two-phase system and model the extraction kinetics based on Fick's diffusion law. Extraction was conducted using 2-propanol and K₂HPO₄, with variations in extraction time, ultrasonic power, and solid-to-solvent ratio. Optimisation was performed using response surface methodology with Box-Behnken design. FT-IR and HPLC analyses confirmed the isolation of alginate. The actual alginate yield of 81.37% was achieved at a solid-to-solvent ratio of 0.04 g/mL, an extraction time of 20 min, and an ultrasonic power of 60% (390 Watts). The optimisation results predicted an alginate yield of 82.244%, with an R² value of 0.9960 for the RSM–Box–Behnken model. The experimental yield obtained from model validation was 81.93%, with a relative prediction error of 0.38%.   The kinetic model based on Fick's diffusion law yielded a De of 1.619×10-11 and an SSE of 0.006673, indicating excellent agreement between the model predictions and the experimental data.
Co-Authors Boy Fachri Erica Wijaya Meta F Rizkiana Yukti Nurani