Greener approach for pulp and paper industry by Xylanase and Laccase

Sharma, Deepak; Chaudhary, Rimple; Kaur, Jaspreet; Arya, Shailendra Kumar

doi:10.1016/j.bcab.2020.101604

Cited by 68 publications

(30 citation statements)

References 124 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Laccase being readily involved in the biodegradation of lignocellulose is an important contributor to the carbon cycle in the biosphere. Japanese lacquer tree Rhus vernicifera was the source from where it was first discovered [69]. Later on, this enzyme was observed in different plant species, bacteria, and insects [70].…”

Section: Laccasesmentioning

confidence: 99%

Enzyme‐assisted bioremediation approach for synthetic dyes and polycyclic aromatic hydrocarbons degradation

et al. 2021

View full text Add to dashboard Cite

Environmental protection from emerging pollutants has become a significant challenge for mankind as an increasing number of contaminants, including synthetic dyes and polycyclic aromatic hydrocarbons (PAHs), represent a serious risk to ecological and environmental balance. Most synthetic dyes have complex aromatic structures and are resistant to degrade by classical approaches, such as physical and chemical processes, including adsorption, chemical coagulation, flocculation, ion exchange, membrane separation, froth flotation, and reverse osmosis. Enzymes-assisted catalytic transformation of pollutants has become a potential alternative to classical methods because of their ability to react with complex compounds, a quick degradation rate, and producing less harmful by-products. Plant peroxidases, and microbial laccase and lignin-degrading peroxidases (manganese and lignin peroxidase) have gained significant attention for treating aromatic waste due to their capability of oxidizing and detoxifying a wide range of recalcitrant xenobiotics, including PAHs and synthetic dyes. Peroxidases being efficient biocatalysts detoxify an array of toxic compounds by simple free-radical mechanism resulting in the formation of oxidized and depolymerized products of significantly reduced toxicity. Moreover, it is an ecofriendly and economically favorable approach towards the biodegradation of recalcitrant and toxic industrial waste. Among microbial and plant peroxidases, bacterial enzymes have broad substrate specificity and can transform a wide range of recalcitrant substrates. Ligninolytic enzymes oxidize the aromatic ring into quinones and acids by producing free hydroxyl radicals instead of dihydrodiols and mineralize aromatic hydrocarbon in combination with cytochrome P450, monooxygenases, and epoxide hydrolases. In the review, an attempt has been made to provide detailed knowledge about the availability of inexpensive peroxidases sources, their mechanism of action, and degradation potential. The present review summarizes the exploitation of peroxidases from plants, bacteria, and fungus (manganese peroxidase, lignin peroxidase, and laccases) for detoxification and degradation of textile dyes as well as PAHs. Conclusively, peroxidases have great potential to react with almost all classes of synthetic dyes and most PAHs

show abstract

Section: Laccasesmentioning

confidence: 99%

Enzyme‐assisted bioremediation approach for synthetic dyes and polycyclic aromatic hydrocarbons degradation

et al. 2021

View full text Add to dashboard Cite

show abstract

“…(ii) For the Kraft process, the wood chips are submitted to NaOH and NaS 2 treatments using high temperature and pressure to remove lignin from cellulose. (iii) In the soda process, which is the most employed process for agro-industrial residues, and NaOH at high temperatures is used to solubilize lignin from cellulose fibers [ 20 ]. In addition, chemical-mechanical pulping combines the chemical and mechanical refining treatments, such as wood cooking with NaOH to remove lignin from cellulose fibers, and then they are submitted to mechanical treatment.…”

Section: Processing Of Lignocellulosic Biomass For Cellulose Extramentioning

confidence: 99%

Nanocellulose Production: Exploring the Enzymatic Route and Residues of Pulp and Paper Industry

et al. 2020

View full text Add to dashboard Cite

Increasing environmental and sustainability concerns, caused by current population growth, has promoted a raising utilization of renewable bio-resources for the production of materials and energy. Recently, nanocellulose (NC) has been receiving great attention due to its many attractive features such as non-toxic nature, biocompatibility, and biodegradability, associated with its mechanical properties and those related to its nanoscale, emerging as a promising material in many sectors, namely packaging, regenerative medicine, and electronics, among others. Nanofibers and nanocrystals, derived from cellulose sources, have been mainly produced by mechanical and chemical treatments; however, the use of cellulases to obtain NC attracted much attention due to their environmentally friendly character. This review presents an overview of general concepts in NC production. Especial emphasis is given to enzymatic hydrolysis processes using cellulases and the utilization of pulp and paper industry residues. Integrated process for the production of NC and other high-value products through enzymatic hydrolysis is also approached. Major challenges found in this context are discussed along with its properties, potential application, and future perspectives of the use of enzymatic hydrolysis as a pretreatment in the scale-up of NC production.

show abstract

“…Among them, endo-xylanase, and exo-xylanase are the most important contributors to xylan depolymerization. Until now, vast applications of xylanase have been extensively explored based on its ability in xylan degradation, for example, biofuels production [ 6 , 7 , 8 ], pulp and paper bleaching [ 9 , 10 , 11 ], bioactive compounds [ 12 , 13 , 14 ], animal feed [ 15 , 16 ], and baking [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Conversion of Wheat Bran to Xylanases and Dye Adsorbent by Streptomyces thermocarboxydus

2021

View full text Add to dashboard Cite

Agro-byproducts can be utilized as effective and low-cost nutrient sources for microbial fermentation to produce a variety of usable products. In this study, wheat bran powder (WBP) was found to be the most effective carbon source for xylanase production by Streptomyces thermocarboxydus TKU045. The optimal media for xylanase production was 2% (w/v) WBP, 1.50% (w/v) KNO3, 0.05% (w/v) MgSO4, and 0.10% (w/v) K2HPO4, and the optimal culture conditions were 50 mL (in a 250 mL-volume Erlenmeyer flask), initial pH 9.0, 37 °C, 125 rpm, and 48 h. Accordingly, the highest xylanase activity was 6.393 ± 0.130 U/mL, 6.9-fold higher than that from un-optimized conditions. S. thermocarboxydus TKU045 secreted at least four xylanases with the molecular weights of >180, 36, 29, and 27 kDa when cultured on the WBP-containing medium. The enzyme cocktail produced by S. thermocarboxydus TKU045 was optimally active over a broad range of temperature and pH (40–70 °C and pH 5–8, respectively) and could hydrolyze birchwood xylan to produce xylobiose as the major product. The obtained xylose oligosaccharide (XOS) were investigated for 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity and the growth effect of lactic acid bacteria. Finally, the solid waste from the WBP fermentation using S. thermocarboxydus TKU045 revealed the high adsorption of Congo red, Red 7, and Methyl blue. Thus, S. thermocarboxydus TKU045 could be a potential strain to utilize wheat bran to produce xylanases for XOS preparation and dye adsorbent.

show abstract

Greener approach for pulp and paper industry by Xylanase and Laccase

Cited by 68 publications

References 124 publications

Enzyme‐assisted bioremediation approach for synthetic dyes and polycyclic aromatic hydrocarbons degradation

Enzyme‐assisted bioremediation approach for synthetic dyes and polycyclic aromatic hydrocarbons degradation

Nanocellulose Production: Exploring the Enzymatic Route and Residues of Pulp and Paper Industry

Conversion of Wheat Bran to Xylanases and Dye Adsorbent by Streptomyces thermocarboxydus

Contact Info

Product

Resources

About