Microwave irradiation-assisted ionic liquid or deep eutectic solvent pretreatment for effective bioconversion of sugarcane bagasse to bioethanol

Sharma, Vishal; Nargotra, Parushi; Sharma, Surbhi; Sawhney, Diksha; Vaid, Surbhi; Bangotra, Ridhika; Dutt, Harish Chander; Bajaj, Bijender Kumar

doi:10.1007/s40974-022-00267-0

Cited by 17 publications

(6 citation statements)

References 39 publications

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“…To increase the effectiveness of the microwave pretreatment, it can be combined with various chemicals, such as alkali, which are used for biomass pretreatment [14]. In a study, brewer's spent grain was subjected to microwave-assisted alkali pretreatment.…”

Section: Microwave Pretreatmentmentioning

confidence: 99%

“…A number of different pretreatment techniques have been applied for increasing the efficiency of cellulose separation from lignin and other components, including chemical, physical, biological and physicochemical methods [9][10][11][12]. However, in the recent times certain low-cost pretreatment strategies such as deep eutectic solvents, hydrothermal pretreatment, ball milling, microwaves, ultrasonication, etc., have been given importance, owing to their remarkable biomass deconstruction properties and contribution towards increasing the overall economy of the bioprocess [8,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Recent Advancements in the Valorization of Agro-Industrial Food Waste for the Production of Nanocellulose

et al. 2023

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The rising climate change concerns over the excessive exploitation of non-renewable sources have necessitated the need for alternative renewable and eco-friendly resources for the production of innovative materials, achieving the targets of bioeconomy. Lignocellulosic biomass (LB) constituted by polymeric sugars and lignin is an abundantly available plant-based renewable material in the form of agro-industrial food waste and crop residues that can be exploited for the production of an array of value-added chemicals and bioproducts. Cellulose is the most abundant natural and biodegradable organic polymer on earth derived from LB, with wide scale applications in the lignocellulosic biorefineries and food industries. The negative effects of food waste from agro-industrial activities could be reduced through the recovery of cellulose from these wastes and converting it into valuable forms. However, the extraction of cellulose from LB is a difficult task owing to the recalcitrant nature of biomass that restricts the easy accessibility of cellulose for value addition. Therefore, a suitable cellulose extraction method through the fractionation of LB is necessary for a better cellulose yield. Furthermore, owing to the enormous potential of nanocellulose (NC), researchers are keenly interested in developing ecologically acceptable cellulose extraction methods. Cellulose nanofibrils and nanocrystals confer excellent mechanical properties, non-toxic characteristics and biodegradability, due to which they possess wide-scale applications in diverse industrial sectors. The current review emphasizes the potential role of cellulose extraction and NC production from agro-food waste. The different pretreatment methods for their extraction from LB are outlined. The applications of nanocellulose in different areas are also discussed. The review also highlights the recent trends, challenges and future directions in the development of cellulose and NC-based commercial products.

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Section: Microwave Pretreatmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advancements in the Valorization of Agro-Industrial Food Waste for the Production of Nanocellulose

et al. 2023

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“…The drawbacks of these traditional pretreatment chemicals has necessitated the exploration of environment friendly and effective pretreatment agents [ 16 , 24 , 30 ]. The introduction of ‘green’ pretreatment methods such as those involving deep eutectic solvents (DESs), ionic liquids and organosolvs have created room for the development of economical lignocellulosic biorefineries [ 27 , [31] , [32] , [33] , [34] ]. Moreover, the low-cost physical pretreatments such as ultrasonic waves and microwave irradiations can be employed as assistive technologies with the chemical pretreatment methods to augment the effectiveness of the overall bioconversion process of LCB for the production of XOS.…”

Section: Introductionmentioning

confidence: 99%

Bioprocess development for the production of xylooligosaccharide prebiotics from agro-industrial lignocellulosic waste

Dong

Tsai

Nargotra

et al. 2023

Heliyon

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“…The first one represents an interesting way for using DES not only for the extraction of phenolics at milder conditions, but for the solubilization of lignin at harsher conditions [ 25 ]. Conversely, microwave irradiation, in the presence of water, is a promising method since it helps in biomass fractionation, which improves enzymatic hydrolysis and therefore sugar yield [ 26 , 27 , 28 ]. Among the advantages of using microwaves are heating occurs directly on the biomass with uniform distribution and can be stopped immediately, its ecological character, the degradation of hydrogen bonds due to electro-magnetic radiation, the low consumption of solvents, energy saving, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Among the advantages of using microwaves are heating occurs directly on the biomass with uniform distribution and can be stopped immediately, its ecological character, the degradation of hydrogen bonds due to electro-magnetic radiation, the low consumption of solvents, energy saving, etc. [ 26 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Avocado Seed Wastes for Antioxidant Phenolics and Carbohydrates Recovery Using Deep Eutectic Solvents (DES)

Del-Castillo-Llamosas,

Rodríguez-Rebelo,

Rodríguez-Martínez

et al. 2023

Antioxidants

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Avocado seeds represent the chief waste produced in avocado processing, leading not only to environmental problems regarding its elimination but to a loss of economic profitability. In fact, avocado seeds are known as interesting sources of bioactive compounds and carbohydrates, so their utilization may reduce the negative effect produced during the industrial manufacture of avocado-related products. In this sense, deep eutectic solvents (DES) are a novel greener alternative than organic solvents to extract bioactive polyphenols and carbohydrates. The study was based on a Box–Behnken experimental design to study the effect of three factors, temperature (40, 50, 60 °C), time (60, 120, 180 min) and water content (10, 30, 50% v/v) on the responses of total phenolic (TPC) and flavonoid content (TFC), antioxidant capacity (measured as ABTS and FRAP) and xylose content in the extract. The DES Choline chloride:glycerol (1:1) was used as solvent on avocado seed. Under optimal conditions, TPC: 19.71 mg GAE/g, TFC: 33.41 mg RE/g, ABTS: 20.91 mg TE/g, FRAP: 15.59 mg TE/g and xylose: 5.47 g/L were obtained. The tentative identification of eight phenolic compounds was assayed via HPLC-ESI. The carbohydrate content of the solid residue was also evaluated, and that solid was subjected to two different processing (delignification with DES and microwave-assisted autohydrolysis) to increase the glucan susceptibility to enzymes, and was also assayed reaching almost quantitative glucose yields. These results, added to the non-toxic, eco-friendly, and economic nature of DES, demonstrate that these solvents are an efficient alternative to organic solvents to recover phenolics and carbohydrates from food wastes.

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Microwave irradiation-assisted ionic liquid or deep eutectic solvent pretreatment for effective bioconversion of sugarcane bagasse to bioethanol

Cited by 17 publications

References 39 publications

Recent Advancements in the Valorization of Agro-Industrial Food Waste for the Production of Nanocellulose

Recent Advancements in the Valorization of Agro-Industrial Food Waste for the Production of Nanocellulose

Bioprocess development for the production of xylooligosaccharide prebiotics from agro-industrial lignocellulosic waste

Valorization of Avocado Seed Wastes for Antioxidant Phenolics and Carbohydrates Recovery Using Deep Eutectic Solvents (DES)

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