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Published on: October 24, 2016
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Enhancing deep eutectic solvent systems for efficient fermentable sugar recovery from lignocellulosic fiber.
Bibi Nausheen Jaffur1, Gopalakrishnan Kumar2, Pratima Khadoo-Jeetah1
1Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit 80837, Mauritius.
Summary
Efficiently converting sugars from Mauritius Hemp (Furcraea Foetida) into fermentable sugars is key for biofuels. Optimized deep eutectic solvent extraction significantly boosts sugar yields, outperforming traditional methods.
Area of Science:
- Biomass Valorization
- Green Chemistry
- Biopolymer Production
Background:
- Lignocellulosic biomass conversion faces challenges in efficient sugar release.
- Furcraea Foetida (Mauritius Hemp) is a potential feedstock for bioproducts.
- Deep eutectic solvents (DES) offer a sustainable alternative for biomass processing.
Purpose of the Study:
- To optimize deep eutectic solvent (DES) and natural deep eutectic solvent (NADES) based extraction of fermentable sugars from Furcraea Foetida.
- To compare the efficiency of DES/NADES extraction with traditional methods.
- To identify optimal operational conditions for maximizing sugar yield.
Main Methods:
- Utilized a Taguchi experimental design to optimize extraction parameters (time, concentration, temperature).
- Investigated various DES formulations including urea, glycerol, citrates, pyrogallol (PY), and cetyltrimethylammonium bromide (CTAB).
- Quantified fermentable sugar (FS) yields using optimized DES/NADES extraction and compared with alkali, hot-water, and acid methods.
Main Results:
- Optimized CTAB:PY (1:3 ratio) extraction at 50°C for 60 min yielded 0.6891 ± 0.0123 g FS/g LCB.
- This yield was 2-6 times higher than non-optimized DES/NADES conditions.
- Achieved 0.2-0.3 times higher yields compared to optimized traditional extraction methods.
Conclusions:
- Optimized DES/NADES extraction is a highly effective green solvent approach for Furcraea Foetida biomass.
- This method significantly enhances fermentable sugar yield, crucial for cost-effective biofuel and biopolymer production.
- The study highlights the potential of tailored DES/NADES for efficient lignocellulosic biomass valorization.
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