BMC Biotechnology· 2026Q2
Extraction, physicochemical, thermal, and rheological characterization of gelatin from milkfish (Chanos chanos) skin using different pretreatment and extraction methods
- 0citations
- Q2SCImago
- 2026year
Short summary
Ultrasound-assisted extraction combined with sulfuric and acetic acid pretreatment yielded the highest milkfish skin gelatin (42.63% ± 1.63%), with improved thermal (melting 33.30°C, gelling 19.70°C) and rheological properties (viscosity 11.92 cP, gel strength 219.57 g) compared to conventional methods.
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Key points
- Ultrasound-assisted extraction with sulfuric and acetic acid pretreatment yielded a maximum gelatin yield of 42.63% ± 1.63% from milkfish skin.
- This method improved gelatin's thermal properties, with melting at 33.30°C and gelling at 19.70°C.
- Gelatin produced via ultrasound and acetic acid pretreatment showed enhanced viscosity (11.92 cP) and gel strength (219.57 g).
- Color analysis indicated that natural pigmentation was retained, with ΔE* values between 55.37 and 59.19.
AI-generated from the title and abstract; the full text is not read.
Abstract
Abstract The study investigated the extraction and characterization of gelatin from milkfish skin ( Chanos chanos ) using different pretreatment and extraction methods. The effects of acetic acid, combined sulfuric acid-acetic acid pretreatments, ultrasound-assisted extraction, and optimized multi-step extraction were evaluated. Extraction conditions significantly affected gelatin yield and functional properties. The highest yield (42.63 ± 1.63%) was obtained using ultrasound-assisted extraction combined with sulfuric acid and acetic acid pretreatment. Ultrasound treatment also improved the thermal and rheological properties of gelatin, resulting in higher melting (33.30 °C) and gelling temperatures (19.70 °C). Gelatin produced using acetic acid pretreatment and ultrasound exhibited greater viscosity (11.92 cP) and gel strength (219.57 g) than gelatin obtained through conventional extraction methods. Color analysis showed ΔE* values ranging from 55.37 to 59.19, indicating retention of the natural gelatin pigmentation. Overall, ultrasound-assisted extraction combined with appropriate acid pretreatment enhanced gelatin yield and improved its physicochemical, thermal, and rheological characteristics.
The authors' abstract, as published at the source. BMC Biotechnology, 2026 · DOI ↗
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Field: Biomaterials
BiomaterialsMaterials Science