Efficacy and functional mechanisms of a novel combinatorial pretreatment approach based on deep eutectic solvent and ultrasonic waves for bioconversion of sugarcane bagasse

Sharma, Vishal; Nargotra, Parushi; Sharma, Surbhi; Bajaj, Bijender Kumar

doi:10.1016/j.renene.2020.10.101

Cited by 80 publications

(31 citation statements)

References 37 publications

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“…The angles of 26.5 • , 33.8 • , and 51.7 • might be ascribed to the tetrahedral type of SnO 2 [37]. Ultrasonic treatment and NaOH (1 wt%) soaking might form the exposed surfaces, remove amorphous components and make biomass loose [49], which resulted in the increased crystallinity index (CrI) of CSUTS-CSW. The surface and pore properties of CSUTS-CSW and Sn-CSW were also determined via the BET method (Table 1).…”

Section: Characterization Of Csuts-cswmentioning

confidence: 99%

Valorization of Waste Lignocellulose to Furfural by Sulfonated Biobased Heterogeneous Catalyst Using Ultrasonic-Treated Chestnut Shell Waste as Carrier

et al. 2021

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Recently, the highly efficient production of value-added biobased chemicals from available, inexpensive, and renewable biomass has gained more and more attention in a sustainable catalytic process. Furfural is a versatile biobased chemical, which has been widely used for making solvents, lubricants, inks, adhesives, antacids, polymers, plastics, fuels, fragrances, flavors, fungicides, fertilizers, nematicides, agrochemicals, and pharmaceuticals. In this work, ultrasonic-treated chestnut shell waste (UTS-CSW) was utilized as biobased support to prepare biomass-based heterogeneous catalyst (CSUTS-CSW) for transforming waste lignocellulosic materials into furfural. The pore and surface properties of CSUTS-CSW were characterized with BET, SEM, XRD, and FT-IR. In toluene–water (2:1, v:v; pH 1.0), CSUTS-CSW (3.6 wt%) converted corncob into furfural yield in the yield of 68.7% at 180 °C in 15 min. CSUTS-CSW had high activity and thermostability, which could be recycled and reused for seven batches. From first to seventh, the yields were obtained from 68.7 to 47.5%. Clearly, this biobased solid acid CSUTS-CSW could be used for the sustainable conversion of waste biomasses into furfural, which had potential application in future.

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Section: Characterization Of Csuts-cswmentioning

confidence: 99%

Valorization of Waste Lignocellulose to Furfural by Sulfonated Biobased Heterogeneous Catalyst Using Ultrasonic-Treated Chestnut Shell Waste as Carrier

et al. 2021

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“…The effect of ultrasonic on lignocellulosic is mainly derived from mechanical action and cavitation, while ultrasound pretreatment can disrupt cell wall structure to increase the available surface area of biomass. Previous studies have shown that ultrasonic pretreatment combined with chemical methods can improve reaction efficiency and achieve efficient lignin removal ( 18 , 19 ). Therefore, ultrasonic-assisted alkali pretreatment could be a novel technique to promote the enzymatic hydrolysis of sugarcane bagasse.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic-Assisted Dual-Alkali Pretreatment and Enzymatic Hydrolysis of Sugarcane Bagasse Followed by Candida tropicalis Fermentation to Produce Xylitol

et al. 2022

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In this work, the investigation mainly focused on ultrasonic-assisted dual-alkali pretreatment and enzymatic hydrolysis of sugarcane bagasse followed by Candida tropicalis fermentation to produce xylitol. The results showed that the combination of NaOH and ammonia water had the best effect by comparing the effects of the four single-alkali (NaOH, KOH, ammonia water, Ca(OH)2) and their mixed double-alkali pretreatments on xylose content. Then, the optimal conditions for ultrasonic-assisted pretreatment and enzymatic hydrolysis of sugarcane bagasse were obtained by response surface methodology. When the ratio of NaOH and ammonia water was 2:1, the mixed alkali concentration (v/v) was 17%, the ultrasonic temperature was 45°C, the ultrasonic power was 300 W, and the ultrasonic time was 40 min, the content of xylose reached a maximum of 2.431 g/L. Scanning electron microscopy showed that sugarcane bagasse by ultrasonic-assisted alkali pretreatment aggravated with more folds and furrows. Moreover, the fermentation results showed that the concentration ratio of enzymatic hydrolysate of sugarcane bagasse affected the xylitol yield, and when concentrated three times, the highest yield of xylitol (54.42%) was obtained.

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“…Additionally, compared to ionic liquid, DES is generally safer, exhibits superior biodegradability, and is more cost-effective to prepare as it is made from natural compounds [ 4 ]. At present, DESs have been used in wide-ranging applications, including electrodeposition [ 5 , 6 , 7 , 8 , 9 ], synthesis of nanomaterials [ 10 , 11 , 12 , 13 ], biotransformation [ 14 , 15 , 16 , 17 , 18 , 19 ], synthesis of pharmaceuticals and drug delivery systems [ 20 , 21 , 22 , 23 , 24 , 25 ], and extraction of bioactive compounds [ 2 , 26 , 27 , 28 , 29 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Deep Eutectic Solvent as Green Solvent in Extraction of Biological Macromolecules: A Review

Ling

Hadinoto

2022

IJMS

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Greater awareness of environmental sustainability has driven many industries to transition from using synthetic organic solvents to greener solvents in their manufacturing. Deep eutectic solvents (DESs) have emerged as a highly promising category of green solvents with well-demonstrated and wide-ranging applications, including their use as a solvent in extraction of small-molecule bioactive compounds for food and pharmaceutical applications. The use of DES as an extraction solvent of biological macromolecules, on the other hand, has not been as extensively studied. Thereby, the feasibility of employing DES for biomacromolecule extraction has not been well elucidated. To bridge this gap, this review provides an overview of DES with an emphasis on its unique physicochemical properties that make it an attractive green solvent (e.g., non-toxicity, biodegradability, ease of preparation, renewable, tailorable properties). Recent advances in DES extraction of three classes of biomacromolecules—i.e., proteins, carbohydrates, and lipids—were discussed and future research needs were identified. The importance of DES’s properties—particularly its viscosity, polarity, molar ratio of DES components, and water addition—on the DES extraction’s performance were discussed. Not unlike the findings from DES extraction of bioactive small molecules, DES extraction of biomacromolecules was concluded to be generally superior to extraction using synthetic organic solvents.

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Efficacy and functional mechanisms of a novel combinatorial pretreatment approach based on deep eutectic solvent and ultrasonic waves for bioconversion of sugarcane bagasse

Cited by 80 publications

References 37 publications

Valorization of Waste Lignocellulose to Furfural by Sulfonated Biobased Heterogeneous Catalyst Using Ultrasonic-Treated Chestnut Shell Waste as Carrier

Valorization of Waste Lignocellulose to Furfural by Sulfonated Biobased Heterogeneous Catalyst Using Ultrasonic-Treated Chestnut Shell Waste as Carrier

Ultrasonic-Assisted Dual-Alkali Pretreatment and Enzymatic Hydrolysis of Sugarcane Bagasse Followed by Candida tropicalis Fermentation to Produce Xylitol

Deep Eutectic Solvent as Green Solvent in Extraction of Biological Macromolecules: A Review

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