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Extraction of dermatan sulfate using ionic liquid-assisted enzymatic digestion: An efficient approach
Aafiya Tarannum1, Sangeeta Ballav1, Jonnalagadda Raghava Rao1
1Inorganic and Physical Chemistry Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai, 600 020, India.
Carbohydrate Research
|July 13, 2023
Summary
This study presents an eco-friendly ionic liquid-assisted enzymatic method to extract dermatan sulfate (DS) from buffalo hides. The new process significantly improves extraction yield and reduces environmental impact, offering a sustainable use for meat industry byproducts.
Area of Science:
- Biochemistry
- Green Chemistry
- Biotechnology
Background:
- Animal hides are a rich source of glycosaminoglycans (GAGs), such as dermatan sulfate.
- Efficiently utilizing meat industry byproducts like hides is crucial for environmental sustainability.
- Conventional methods for GAG extraction often involve harsh chemicals and multiple steps.
Purpose of the Study:
- To develop an efficient and environmentally safe method for extracting dermatan sulfate from buffalo hides.
- To explore the use of ionic liquids in combination with enzymatic processes for GAG extraction.
- To improve the yield and sustainability of dermatan sulfate production.
Main Methods:
- Extraction of dermatan sulfate from buffalo hides using an ionic liquid-assisted enzymatic process.
- Separation and purification of dermatan sulfate from the GAG mixture via chromatographic techniques.
- Characterization of the extracted dermatan sulfate using NMR, FT-IR, and ESI-MS.
Main Results:
- The ionic liquid-assisted enzymatic process achieved a 75% increase in dermatan sulfate extraction yield compared to conventional methods.
- The process demonstrated significant advantages, including reduced chemical usage, elimination of harsh chemicals, and fewer processing steps.
- The optimized process time was reduced to 12 hours.
- Spectroscopic analyses confirmed the successful extraction and purity of dermatan sulfate.
Conclusions:
- Ionic liquid-assisted enzymatic extraction offers an efficient and green alternative for dermatan sulfate recovery from animal hides.
- This methodology enhances the utilization of meat industry byproducts, promoting environmental sustainability.
- The developed process provides a foundation for future applications of derived GAGs.

