RETRACTED: Biological pretreatment of lignocellulosic biomass – An overview

Sindhu, Raveendran; Binod, Parameswaran; Pandey, Ashok

doi:10.1016/j.biortech.2015.08.030

Cited by 964 publications

(379 citation statements)

References 46 publications

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“…However, extracting cellulose (40-50%) and hemicellulose (20-40%) from raw plant biomass has proven to be challenging due to the high lignin content of the substrate [3]. Current industrial techniques used to overcome this barrier include physical, chemical and biological treatment (e.g., milling, acid hydrolysis and enzyme treatment, respectively) [4].…”

Section: Introductionmentioning

confidence: 99%

In Silico Identification of Microbial Partners to Form Consortia with Anaerobic Fungi

et al. 2018

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Abstract:Lignocellulose is an abundant and renewable resource that holds great promise for sustainable bioprocessing. However, unpretreated lignocellulose is recalcitrant to direct utilization by most microbes. Current methods to overcome this barrier include expensive pretreatment steps to liberate cellulose and hemicellulose from lignin. Anaerobic gut fungi possess complex cellulolytic machinery specifically evolved to decompose crude lignocellulose, but they are not yet genetically tractable and have not been employed in industrial bioprocesses. Here, we aim to exploit the biomass-degrading abilities of anaerobic fungi by pairing them with another organism that can convert the fermentable sugars generated from hydrolysis into bioproducts. By combining experiments measuring the amount of excess fermentable sugars released by the fungal enzymes acting on crude lignocellulose, and a novel dynamic flux balance analysis algorithm, we screened potential consortia partners by qualitative suitability. Microbial growth simulations reveal that the fungus Anaeromyces robustus is most suited to pair with either the bacterium Clostridia ljungdahlii or the methanogen Methanosarcina barkeri-both organisms also found in the rumen microbiome. By capitalizing on simulations to screen six alternative organisms, valuable experimental time is saved towards identifying stable consortium members. This approach is also readily generalizable to larger systems and allows one to rationally select partner microbes for formation of stable consortia with non-model microbes like anaerobic fungi.

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Section: Introductionmentioning

confidence: 99%

In Silico Identification of Microbial Partners to Form Consortia with Anaerobic Fungi

et al. 2018

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“…e utilization of crop residues such as straws and stalks has been as a major strategic industry in the area of the renewable resources development in the 21st century of the world. And the resources' utilization is mainly focused on the development of chemical industry and building materials [19][20][21]. According to current reports, the raw materials used for the production of the water-reducing agent are mostly cellulose products.…”

Section: Introductionmentioning

confidence: 99%

Research on Wheat Straw Application in the Preparation of Superplasticizer

Guo

Zhu

Gao

et al. 2018

Advances in Materials Science and Engineering

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Wheat straw was utilized in the preparation of polycarboxylate superplasticizer (PCS) to improve its performance as well as to reduce the production cost in this paper. e addition time and pretreatment time of wheat straw in the production of PCS were detected. Orthogonal experimental design was adopted to optimize the components of reactants, and the adding time of the initiator was also examined. e PCS produced with wheat straw in this paper kept a rather high water-reducing rate. In addition, the results of some physical characteristics showed there were no obvious differences between the PCS produced with and without wheat straw, while the PCS produced with wheat straw had the longer time of coagulation. At the same time, infrared spectrum implied that the addition of wheat straw made the side chain more abundant and had little influence on the main chain of the large molecules.

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“…Biomass pretreatment followed by biochemical degradation allows recovery of targeted molecules (Sindhu et al, 2016). Pretreatment for decomposition of biomass into cellulose, hemicellulose and lignin is needed for lignocellulosic or second generation feedstock, such as MSW, due to its heterogeneous nature.…”

Section: Introductionmentioning

confidence: 99%