Endoglucanase enzymatic modification of kraft pulp during recycling

Deng, Tao; Lu, Liuliu; Gao, Shipeng; Lin, Ying; Han, Sang‐Ik

doi:10.1007/s10529-016-2088-1

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…It is common to use complex protein mixtures or crude extracts derived from microorganisms to control pitch problems [16,37,38]. However, to develop feasible stickies control, it is important to study each microorganism-derived protein [39,40] or improve the over-expression of tailor-made recombinant proteins [41][42][43]. Another product consisting of esterase enzymes has been developed by Buckman and is known as Optimyze.…”

Section: Discussionmentioning

confidence: 99%

Chemical Characterization and Enzymatic Control of Stickies in Kraft Paper Production

et al. 2020

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Paper recycling has increased in recent years. A principal consequence of this process is the problem of addressing some polymeric components known as stickies. A deep characterization of stickies sampled over one year in a recycled paper industry in México was performed. Based on their chemical structure, an enzymatic assay was performed using lipases. Compounds found in stickies by Fourier-transform infrared spectrometry were poly (butyl-acrylate), dioctyl phthalate, poly (vinyl-acetate), and poly (vinyl-acrylate). Pulp with 4% (w/w) consistency and pH = 6.2 was sampled directly from the mill once macrostickies were removed. Stickies were quantified by counting the tacky macrostructures in the liquid fraction of the pulp using a Neubauer chamber before the paper was made, and they were analyzed with rhodamine dye and a UV lamp. Of the two commercial enzymes evaluated, the best treatment condition used Lipase 30 G (Specialty Enzymes & Biotechnologies Co®, Chino, CA, USA) at a concentration of 0.44 g/L, which decreased 35.59% of stickies. SebOil DG (Specialty Enzymes & Biotechnologies®) showed a stickies reduction of 21.5% when used at a concentration of 0.33 g/L. Stickies in kraft paper processes were actively controlled by the action of lipases, and future research should focus on how this enzyme recognizes its substrate and should apply synthetic biology to improve lipase specificity.

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Section: Discussionmentioning

confidence: 99%

Chemical Characterization and Enzymatic Control of Stickies in Kraft Paper Production

et al. 2020

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“…It is common to use complex protein mixtures or crude extracts derived from microorganisms to control pitch problems [16,29,30]. However, to develop feasible stickies control, it is important to study each microorganismderived protein [31,32] or improve the over-expression of tailor-made recombinant proteins [33][34][35]. Another product consisting of esterase enzymes has been developed by Buckman and is known as Optimyze.…”

Section: Discussionmentioning

confidence: 99%

Chemical Characterization and Enzymatic Control of Stickies in Kraft Paper Production

Ballinas-Casarrubias¹,

Sánchez²,

Eguiarte-Franco³

et al. 2019

Preprint

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Paper recycling has increased in recent years. A principal consequence of this process is the problem of addressing polymeric components known as stickies. A deep characterization of stickies sampled over one year in a recycled paper industry in México was performed. Based on their chemical structure, an enzymatic assay was performed using lipases. Compounds found in stickies by Fourier-Transform Infrared spectrometry were poly (butyl-acrylate), dioctyl phthalate, poly (vinyl-acetate), and poly (vinyl-acrylate). Pulp with 4% consistency and pH=6.2 was sampled directly from the mill once macro stickies were removed. Stickies were quantified by counting the tacky macrostructures in the liquid fraction of the pulp using a Neubauer chamber before the paper was made, and they were analyzed with rhodamine dye and a UV lamp. Of the two enzymes evaluated, the best treatment condition used Lipase 30G at a concentration of 0.44 g/L, which produced a 35.59% decrease in stickies. SebOil DG showed a smaller stickies reduction of 21.5% when used at a concentration of 0.33 g/L. Stickies in kraft paper processes were actively controlled by the action of lipases, and future research should focus on how this enzyme recognizes its substrate and should apply synthetic biology to improve lipase specificity.

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Statistical analysis of the crystallinity index of nanocellulose produced from Kraft pulp via controlled enzymatic hydrolysis

Ribeiro

Bojorge

Pereira

2020

Biotechnology and Applied Biochemistry

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Endoglucanase enzymatic modification of kraft pulp during recycling

Abstract: Endoglucanase EG1 modifies the interfacial properties of fibers, which affects fibre morphology during the recycling process and improves the technical properties of the resulting pulp and paper.

Cited by 7 publications

References 19 publications

Chemical Characterization and Enzymatic Control of Stickies in Kraft Paper Production

Chemical Characterization and Enzymatic Control of Stickies in Kraft Paper Production

Chemical Characterization and Enzymatic Control of Stickies in Kraft Paper Production

Statistical analysis of the crystallinity index of nanocellulose produced from Kraft pulp via controlled enzymatic hydrolysis

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