Evolution of functional group of lignocellulosic biomass and its delignified form during thermal conversion using synchrotron-based THz and laboratory-based in-situ DRIFT spectroscopy

Kundu, Chandan; Biswas, Saheli; Thomas, Bennet Sam; Appadoo, Dominique; Duan, Xiaofei; Bhattacharya, Sankar

doi:10.1016/j.fuel.2023.128579

Cited by 6 publications

(2 citation statements)

References 36 publications

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“…Hence, it cannot be discounted that furans might be generated through Nonetheless, it is widely acknowledged that furans may also be formed directly through the dehydration of cellulose or fructose, resulting in anhydrosugar intermediates like levoglucosan and levoglucosenone. Subsequently, at 250 • C, these intermediates can be converted into furans, including furanone and dihydro-hydroxy-2(3H)-furanone, as well as acetaldehyde and glycolaldehyde [25,26]. Examination of their potential energy surfaces indicates that furans represent the minima in Gibbs free energy (∆G) within the product mixture.…”

Section: Phytochemical Profilementioning

confidence: 99%

Smilax aspera L. Leaf and Fruit Extracts as Antibacterial Agents for Crop Protection

Fontana,

Sánchez-Hernández,

Martín-Ramos

et al. 2024

Agronomy

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Smilax aspera L. (commonly known as sarsaparilla) is recognized for its composition rich in flavonoids, phenylpropanoids, steroidal saponins, stilbenoids, and tannins, exhibiting anti-inflammatory, cytotoxic, and antimicrobial properties. This study investigates the hydromethanolic extracts of its leaves and fruits through vibrational spectroscopy and gas chromatography–mass spectrometry, evaluating their potential as biorationals for safeguarding crops. Analysis of S. aspera leaf and fruit extracts revealed the presence of phytochemicals such as lactones and other furan derivatives. In vitro assessments against three phytopathogens—Erwinia amylovora, Pseudomonas syringae pv. actinidiae, and Xanthomonas campestris pv. campestris—demonstrated strong antibacterial activity, with minimum inhibitory concentration (MIC) values of 1500 μg·mL−1 for both extracts. Biofilm tests indicated that the leaf extract reduced biofilm formation by 78–85%, while the fruit extract led to a reduction of 73–92.5%. At a concentration of 750 µg·mL−1, the extracts caused a decrease in amylovoran synthesis by 41–58%. Additionally, noticeable alterations in membrane permeability were observed at MIC and MIC/2 doses. Subsequent in vivo trials conducted on Pyrus communis L. trees utilizing the combined aerial part extract yielded substantial protection against E. amylovora at a dose of 1500 μg·mL−1, reaching 80% wilting reduction for the leaf extract. The findings presented herein cast S. aspera extracts as a promising natural-based treatment against these bacterial phytopathogens.

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Section: Phytochemical Profilementioning

confidence: 99%

Smilax aspera L. Leaf and Fruit Extracts as Antibacterial Agents for Crop Protection

Fontana,

Sánchez-Hernández,

Martín-Ramos

et al. 2024

Agronomy

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“…Studies have shown that pretreatment of solid biomass with high acid and temperature generates higher concentrations of degradation products like furfural and HMF, with an improved chance of fermentable sugar yield from the process [13]. Aromatic degradation products like furans and phenols also form due to sugar degradation during this process [14].…”

Section: Introductionmentioning

confidence: 99%

Minimization of Inhibitor Generation in Rice Straw Hydrolysate Using RSM Optimization Technique

et al. 2023

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Ethanol production from lignocellulosic biomass comprises pretreatment, hydrolysis, and fermentation. However, several inhibitors are generated during rice straw chemical hydrolysis, including furfural, 5-hydroxymethylfurfural (HMF), and phenolics. These inhibitors, i.e., furfural and HMF, are toxic to yeast cells, can negatively impact yeast growth and metabolism, and reduce the process efficiency and production yield. Total phenolics are also reported to inhibit yeast growth and metabolism and act as a source of reactive oxygen species (ROS), which can damage yeast cells. Therefore, minimizing the generation of these inhibitors during rice straw hydrolysis is essential to improve the efficiency and yield of ethanol fermentation. Optimization of process variables can help reduce inhibitor generation and increase the efficiency of used detoxification methods such as adsorption, ion exchange, and biological methods. This study aimed to minimize inhibitor generation during the chemical hydrolysis of rice straw biomass. Minitab 17 software was employed and response surface curve regression analysis was used to develop a quadratic equation of an optimized process for minimized release of inhibitors molecules. The main inhibitors in pretreated rice straw hydrolysate identified were furfural (48.60%/100 g solid biomass), HMF (2.32%/100 g solid biomass), and total phenolics (1.65%/100 g solid biomass). The optimal pretreatment conditions were a biomass solid loading rate of 15% w/v, an H2SO4concentration of 12% v/v, a pretreatment reaction time of 30 min, and a temperature of 100 °C. Optimization of these process variables reduced the inhibitor generation by up to one and a half fold.

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Isolation and characterization of a novel lignocellulosic fiber from Butea monosperma as a sustainable material for lightweight polymer composite applications

Rao

Singh

Ramulu

et al. 2023

Biomass Conv. Bioref.

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Evolution of functional group of lignocellulosic biomass and its delignified form during thermal conversion using synchrotron-based THz and laboratory-based in-situ DRIFT spectroscopy

Cited by 6 publications

References 36 publications

Smilax aspera L. Leaf and Fruit Extracts as Antibacterial Agents for Crop Protection

Smilax aspera L. Leaf and Fruit Extracts as Antibacterial Agents for Crop Protection

Minimization of Inhibitor Generation in Rice Straw Hydrolysate Using RSM Optimization Technique

Isolation and characterization of a novel lignocellulosic fiber from Butea monosperma as a sustainable material for lightweight polymer composite applications

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