Fiber characterization of old corrugated container bleached pulp with laccase and glycine pretreatment

Chen, Guozheng; Dong, Junjing; Wan, Jinquan; Ma, Yuanyuan; Yan, Wang

doi:10.1007/s13399-020-01200-3

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…The nonlinear trend in relative crystallinity with laccase concentration perhaps suggested that as the lignin was degraded, it dissolved in the surrounding solution, which increased the crystallinity. However, when the laccase concentration was too high, the lignin degradation products adsorbed on the surface of straw and could form an amorphous coating with decreased the overall crystallinity of the materials (Chen et al 2023). Meanwhile, the PU modified treatment increased the numbers of aldehyde groups and Schiff bases in the corn straw, which might increase the crystallinity of the modified material.…”

Section: Xrd Analyses Of the Pcp With Different Modified Treatmentsmentioning

confidence: 99%

Two modified treatment methods for pretreated corn stalk and its composites with modified lignosulfonate

Bin

Zhong

et al. 2023

BioRes

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Effects of two different modified treatments were investigated relative to the chemical and mechanical properties of pretreated corn stalk particles and their composites prepared with a modified lignosulfonate (ML) binder. Corn stalk particles (CP) first were prepared by treating corn stalk particles with oxalic acid in ultrasonic conditions (pretreated corn stalk particles, PCP). These particles were then modified by treatment with either laccase-vanillin system with ultrasound (LU) or polyethylenimine-glutaraldehyde with ultrasound (PU), and the surface chemistries of the modified PCP and mechanical properties of LU-PCP/ML composites and PU-PCP/ML composites, such as modulus of rupture (MOR), modulus of elasticity (MOE), internal bonding strength (IB), 24-h thickness swelling (TS), and crystallinity were compared. Both modified treatments dramatically enhanced the mechanical properties of the composites. The MOR, MOE, and IB of the PU-PCP/ML composites were improved by up to 148%, 81%, and 62%, respectively, compared to LU-PCP/ML. Moreover, the 24-h TS of the LU-PCP/ML composites was reduced by 16%. These results show that the pretreatment method of CP and ultrasonic collaborative treatment of PCP can effectively improve the properties of its composites. Modified PCP with PU was more favorable for surface chemical and mechanical properties.

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Section: Xrd Analyses Of the Pcp With Different Modified Treatmentsmentioning

confidence: 99%

Two modified treatment methods for pretreated corn stalk and its composites with modified lignosulfonate

Bin

Zhong

et al. 2023

BioRes

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“…These agriculture residues pose a serious threat to the environment if not managed properly. Therefore, using these wastes for the degradation and recycling of pollutants has become an important strategy to reduce the disposal problems (Chen et al 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Optimization of laccase from Stenotrophomonas maltophilia E1 by submerge fermentation using coconut husk with its detoxification and biodecolorization ability of synthetic dyes

Albulaihed,

Adnan,

Jamal

et al. 2023

Bioresour. Bioprocess.

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Enzymatic degradation of synthetic dyes holds an immense promise for addressing the environmental concerns associated with the textile and dye industries. This study aimed to isolate bacteria capable of producing laccase enzymes from an anthropogenic environment. Subsequently, viability of utilizing cost-effective agricultural residues as substrates for laccase production was assessed. Response Surface Methodology (RSM) and the One Variable at a Time (OVAT) approach was pursued for the optimization of laccase production, followed by pH and temperature stability, dye degradation and decolorization experiments, toxicological studies on the degraded dye metabolites. In results, laccase-producing bacterial strain was identified as Stenotrophomonas maltophilia strain E1 (S. maltophilia). Among variety of substrates, coconut husk exhibited optimal efficacy. In a statistical optimization study, it was found that S. maltophilia was capable of producing laccase 51.38 IU/mL, i.e., three times higher than the amount of laccase produced by unoptimized medium (16.7 IU/mL), and the enzyme activity was found to be steady at an acidic pH, and a mesophilic temperature range. The laccase obtained from S. maltophilia E1 demonstrated proficient dye decolorization capabilities, achieving a notable 92.1% reduction in Malachite green dye coloration at a concentration of 500 ppm. Gas chromatography–mass spectrometry (GC–MS) analysis of the decolorized derivatives of Malachite green revealed a conversion into a distinct compounds. Moreover, after undergoing laccase treatment, Malachite green exhibited decreased phytotoxic effects on Oryza sativa, pointing to enzymatic detoxification. Collectively, insights gained from the present study will contribute to the development of efficient enzymatic approaches for addressing the environmental pollution caused by synthetic dyes. Graphical Abstract

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Sustainable Production of Thermostable Laccase from Agro-Residues Waste by Bacillus aquimaris AKRC02

et al. 2021

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Fiber characterization of old corrugated container bleached pulp with laccase and glycine pretreatment

Cited by 8 publications

References 24 publications

Two modified treatment methods for pretreated corn stalk and its composites with modified lignosulfonate

Two modified treatment methods for pretreated corn stalk and its composites with modified lignosulfonate

Optimization of laccase from Stenotrophomonas maltophilia E1 by submerge fermentation using coconut husk with its detoxification and biodecolorization ability of synthetic dyes

Sustainable Production of Thermostable Laccase from Agro-Residues Waste by Bacillus aquimaris AKRC02

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