Bioethanol production from rice straw through an enzymatic route mediated by enzymes developed in-house from Aspergillus fumigatus

Xian-chun, Jin; Song, Jianing; Liu, Gao-Qiang

doi:10.1016/j.energy.2019.116395

Cited by 77 publications

(17 citation statements)

References 45 publications

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“…Previous studies also found that Penicillium could produce a series of enzymes that efficiently degrade straw [61,62]. It was also reported that Talaromyces, Fusarium, and Aspergillus produced a series of enzymes, such as beta-glucosidase, carboxymethyl cellulase, laccase, lignin peroxidase, and manganese peroxidase, which are essential for straw degradation [63][64][65][66][67], and this may explain the identification of the keystone taxa in our study. Though Aphelidiomycota was the most abundant in and only existed in FT, its members were not culturable at this time.…”

Section: Discussionsupporting

confidence: 74%

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

et al. 2021

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Rice is a staple food for the world’s population. However, the straw produced by rice cultivation is not used sufficiently. Returning rice straw to the field is an effective way to help reduce labor and protect the soil. This study focused on the effect of water-covered depth with the freeze–thaw cycle on rice straw decomposition and the soil fungal community structure in a field in Northeast China. The field and controlled experiments were designed, and the fungal ITS1 region was tested by high-throughput sequencing for analyzing the fungal communities in this study. The results showed that water coverage with the freeze–thaw cycle promoted the decomposition of rice straw and influenced the fungal community structure; by analyzing the network of the fungal communities, it was found that the potential keystone taxa were Penicillium, Talaromyces, Fusarium, and Aspergillus in straw decomposition; and the strains with high beta-glucosidase, carboxymethyl cellulase, laccase, lignin peroxidase, and manganese peroxidase could also be isolated in the treated experiment. Furthermore, plant pathogenic fungi were found to decrease in the water-covered treatment. We hope that our results can help in rice production and straw return in practice.

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Section: Discussionsupporting

confidence: 74%

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

et al. 2021

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“…These residues were not considered as promising as the residues of the remaining cereals. In fact, despite presenting an average distance to the reference NUT III (Santarém, Lezíria do Tejo) lower (159 km) than the residues of the remaining cereals, these residues present a maximum yield of 83.5% (Jin et al, 2020), therefore lower than the values of the wheat and barley residues. These are one of the reasons why these last agricultural residues score better than the rice.…”

Section: Discussionmentioning

confidence: 87%

Multicriteria evaluation of biomass residues in Portugal to second generation bioethanol production

Fontes

João

Silva

2021

Prod.

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This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Thematic Section -Future of Energy-efficient Operations and Production Systems IntroductionOvercoming the problem of global warming and pollution due to fossil fuel consumption is imperative and one of the greatest challenges of our times. Increasing the global energy production from renewable sources by 2030 to combat climate change and minimize its impacts on populations around the world is vital, reason why European legislation established the goal of improving energy efficiency by 32.5% until 2030 (Energy Efficiency Directive 2012/27/EU, recently amended to Directive (EU) 2018/2002) (Trotta, 2019). With this in mind, in accordance with the policies and the targets defined and approved internationally by different countries, it was decided to incorporate until 2030 between 20% and 30% of ethanol in gasoline (Jahid et al., 2018).When ethanol is produced by alcoholic fermentation process, mediated by yeasts, filamentous fungi, or bacteria from simple sugars, namely pentoses, C5 (i.e., xylose), or hexoses, C6 (i.e., glucose), and it is not provided by oil refineries, it is called bioethanol (Rosa, 2006). Bioethanol has increasingly emerged on the market as the biofuel

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“…A. fumigatus is gaining great interest as an enzymes producer for biotechnological applications including lignocellulose conversion to added value products [ 2 , 4 , 49 , 50 , 51 , 52 ]. In this case, strain LMB-35Aa was selected as a neutral alkaline endoglucanase producer and grown as biofilms on polyester cloth in order to improve its enzymatic productivity.…”

Section: Discussionmentioning

confidence: 99%

Gene Expression Analysis of Non-Clinical Strain of Aspergillus fumigatus (LMB-35Aa): Does Biofilm Affect Virulence?

Rebaza¹,

Ludeña²,

Samolski³

et al. 2020

JoF

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Aspergillus fumigatus LMB-35Aa, a saprophytic fungus, was used for cellulase production through biofilms cultures. Since biofilms usually favor virulence in clinical strains, the expression of the related genes of the LMB 35-Aa strain was analyzed by qPCR from the biomass of planktonic cultures and biofilms developed on polyester cloth and polystyrene microplates. For this, virulence-related genes reported for the clinical strain Af293 were searched in A. fumigatus LMB 35-Aa genome, and 15 genes were identified including those for the synthesis of cell wall components, hydrophobins, invasins, efflux transporters, mycotoxins and regulators. When compared with planktonic cultures at 37 °C, invasin gene calA was upregulated in both types of biofilm and efflux transporter genes mdr4 and atrF were predominantly upregulated in biofilms on polystyrene, while aspHs and ftmA were upregulated only in biofilms formed on polyester. Regarding the transcription regulators, laeA was downregulated in biofilms, and medA did not show a significant change. The effect of temperature was also evaluated by comparing the biofilms grown on polyester at 37 vs. 28 °C. Non-significant changes at the expression level were found for most genes evaluated, except for atrF, gliZ and medA, which were significantly downregulated at 37 °C. According to these results, virulence appears to depend on the interaction of several factors in addition to biofilms and growth temperature.

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Bioethanol production from rice straw through an enzymatic route mediated by enzymes developed in-house from Aspergillus fumigatus

Cited by 77 publications

References 45 publications

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

Multicriteria evaluation of biomass residues in Portugal to second generation bioethanol production

Gene Expression Analysis of Non-Clinical Strain of Aspergillus fumigatus (LMB-35Aa): Does Biofilm Affect Virulence?

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