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https://www.readbyqxmd.com/read/29234464/production-of-isoprene-one-of-the-high-density-fuel-precursors-from-peanut-hull-using-the-high-efficient-lignin-removal-pretreatment-method
#1
Sumeng Wang, Zhaobao Wang, Yongchao Wang, Qingjuan Nie, Xiaohua Yi, Wei Ge, Jianming Yang, Mo Xian
Background: Isoprene as the feedstock can be used to produce renewable energy fuels, providing an alternative to replace the rapidly depleting fossil fuels. However, traditional method for isoprene production could not meet the demands for low-energy consumption and environment-friendliness. Moreover, most of the previous studies focused on biofuel production out of lignocellulosic materials such as wood, rice straw, corn cob, while few studies concentrated on biofuel production using peanut hull (PH)...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29234458/robust-genetic-transformation-of-sorghum-sorghum-bicolor-l-using-differentiating-embryogenic-callus-induced-from-immature-embryos
#2
Srinivas Belide, Thomas Vanhercke, James Robertson Petrie, Surinder Pal Singh
Background: Sorghum (Sorghum bicolor L.) is one of the world's most important cereal crops grown for multiple applications and has been identified as a potential biofuel crop. Despite several decades of study, sorghum has been widely considered as a recalcitrant major crop for transformation due to accumulation of phenolic compounds, lack of model genotypes, low regeneration frequency and loss of regeneration potential through sub-cultures. Among different explants used for genetic transformation of sorghum, immature embryos are ideal over other explants...
2017: Plant Methods
https://www.readbyqxmd.com/read/29233030/hydrodynamic-cavitation-as-a-strategy-to-enhance-the-efficiency-of-lignocellulosic-biomass-pretreatment
#3
Ruly Terán Hilares, Lucas Ramos, Silvio Silvério da Silva, Giuliano Dragone, Solange I Mussatto, Júlio César Dos Santos
Hydrodynamic cavitation (HC) is a process technology with potential for application in different areas including environmental, food processing, and biofuels production. Although HC is an undesirable phenomenon for hydraulic equipment, the net energy released during this process is enough to accelerate certain chemical reactions. The application of cavitation energy to enhance the efficiency of lignocellulosic biomass pretreatment is an interesting strategy proposed for integration in biorefineries for the production of bio-based products...
December 12, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/29232601/marine-microalgae-for-production-of-biofuels-and-chemicals
#4
REVIEW
Yoshiaki Maeda, Tomoko Yoshino, Tadashi Matsunaga, Mitsufumi Matsumoto, Tsuyoshi Tanaka
Marine microalgae are recognized as promising feedstocks for biofuels and chemicals owing to their higher growth rates than those of terrestrial crop plants. We aimed to summarize the production of biofuels and chemicals by marine microalgae and to discuss their advantages and potential from the aspect of bioprocess. The present circumstances of the microalgae industry were briefly described and large-scale industrial plants for microalgae production, where some marine microalgae are cultivated, were introduced...
December 9, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29232119/catalytic-mechanism-of-fungal-lytic-polysaccharide-monooxygenases-investigated-by-first-principles-calculations
#5
Luca Bertini, Raffaella Breglia, Matteo Lambrughi, Piercarlo Fantucci, Luca De Gioia, Marco Borsari, Marco Sola, Carlo Augusto Bortolotti, Maurizio Bruschi
Lytic polysaccharide monooxygenases (LPMOs) are Cu-containing enzymes that facilitate the degradation of recalcitrant polysaccharides by the oxidative cleavage of glycosidic bonds. They are gaining rapidly increasing attention as key players in biomass conversion, especially for the production of second-generation biofuels. Elucidation of the detailed mechanism of the LPMO reaction is a major step toward the assessment and optimization of LPMO efficacy in industrial biotechnology, paving the way to utilization of sustainable fuel sources...
December 12, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29230370/cell-wall-composition-and-lignin-biosynthetic-gene-expression-along-a-developmental-gradient-in-an-australian-sugarcane-cultivar
#6
William P Bewg, Heather D Coleman
Sugarcane bagasse is an abundant source of lignocellulosic material for bioethanol production. Utilisation of bagasse for biofuel production would be environmentally and economically beneficial, but the recalcitrance of lignin continues to provide a challenge. Further understanding of lignin production in specific cultivars will provide a basis for modification of genomes for the production of phenotypes with improved processing characteristics. Here we evaluated the expression profile of lignin biosynthetic genes and the cell wall composition along a developmental gradient in KQ228 sugarcane...
2017: PeerJ
https://www.readbyqxmd.com/read/29227859/waste-biorefineries-integrating-anaerobic-digestion-and-microalgae-cultivation-for-bioenergy-production
#7
REVIEW
Yi-di Chen, Shih-Hsin Ho, Dillirani Nagarajan, Nan-Qi Ren, Jo-Shu Chang
Commercialization of microalgal cultivation has been well realized in recent decades with the use of effective strains that can yield the target products, but it is still challenged by the high costs arising from mass production, harvesting, and further processing. Recently, more interest has been directed towards the utilization of waste resources, such as sludge digestate, to enhance the economic feasibility and sustainability of microalgae production. Anaerobic digestion for waste disposal and phototrophic microalgal cultivation are well-characterized technologies in both fields...
December 8, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29227181/effects-of-fuel-components-and-combustion-particle-physicochemical-properties-on-toxicological-responses-of-lung-cells
#8
Isabel C Jaramillo, Anne Sturrock, Hossein Ghiassi, Diana J Woller, Cassandra E Deering-Rice, JoAnn S Lighty, Robert Paine, Christopher Reilly, Kerry E Kelly
The physicochemical properties of combustion particles that promote lung toxicity are not fully understood, hindered by the fact that combustion particles vary based on the fuel and combustion conditions. Real-world combustion-particle properties also continually change as new fuels are implemented, engines age, and engine technologies evolve. This work used laboratory-generated particles produced under controlled combustion conditions in an effort to understand the relationship between different particle properties and the activation of established toxicological outcomes in human lung cells (H441 and THP-1)...
December 11, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29224716/the-role-of-constructed-wetlands-in-a-new-circular-economy-resource-oriented-and-ecosystem-services-paradigm
#9
F Masi, A Rizzo, M Regelsberger
Wastewater management is included in one of the 17 Sustainable Development Goals (SDGs): SDG 6 is dedicated to water and sanitation and sets out to "ensure availability and sustainable management of water and sanitation for all". SDG 6 expands the Millennium Development Goals (MDGs) focus on drinking water and basic sanitation to now cover the entire water cycle, including the management of water, wastewater and ecosystem resources. A UN report in 2017 states that likely over 80% of the wastewater worldwide is still discharged without adequate treatment...
December 7, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29223344/native-vascular-related-nac-transcription-factors-are-efficient-regulator-of-multiple-classes-of-secondary-wall-associated-genes-in-banana
#10
Sanjana Negi, Himanshu Tak, T R Ganapathi
Secondary-wall deposition in xylem vessel elements is regulated by vascular-related NAC transcription factors (VNDs). We show that three banana VNDs (MusaVND1, MusaVND2 and MusaVND3) directly regulate multiple secondary-wall associated genes by binding to their 5'-upstream regulatory region. Transgenic banana harboring either PMusaVND1:GUS, PMusaVND2:GUS or PMusaVND3:GUS showed specific GUS staining in lignified tissues. MusaVND1, MusaVND2 and MusaVND3 encodes transcriptional-activators as its C-terminal region drive expression of reporter genes in vivo in yeast...
December 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29223022/next-generation-industrial-biotechnology-based-on-extremophilic-bacteria
#11
REVIEW
Guo-Qiang Chen, Xiao-Ran Jiang
Industrial biotechnology aims to produce bulk chemicals including polymeric materials and biofuels based on bioprocessing sustainable agriculture products such as starch, fatty acids and/or cellulose. However, traditional bioprocesses require bioreactors made of stainless steel, complicated sterilization, difficult and expensive separation procedures as well as well-trained engineers that are able to conduct bioprocessing under sterile conditions, reducing the competitiveness of the bio-products. Amid the continuous low petroleum price, next generation industrial biotechnology (NGIB) allows bioprocessing to be conducted under unsterile (open) conditions using ceramic, cement or plastic bioreactors in a continuous way, it should be an energy, water and substrate saving technology with convenient operation procedure...
December 6, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29220811/synergistic-effect-of-the-enzyme-complexes-comprising-agarase-carrageenase-and-neoagarobiose-hydrolase-on-degradation-of-the-red-algae
#12
Dae Hee Kang, Seung Kyou You, Young-Chul Joo, Sang Kyu Shin, Jeong Eun Hyeon, Sung Ok Han
In the practice of converting red algae biomass into biofuel or valuable biomaterials, the critical step is the decomposition process of the agarose to give fermentable monomeric sugars. In this study, we selected three enzymes such as agarase, carrageenase and neoagarobiose hydrolase to inducible the simultaneous hydrolysis of the major substrates such as agar and carrageenan constituting the pretreated red algae, and expressed the chimeric enzymes and formed a complexes through optimization of addition ratio...
December 2, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29219295/carbon-with-expanded-and-well-developed-graphene-planes-derived-directly-from-condensed-lignin-as-a-high-performance-anode-for-sodium-ion-batteries
#13
Dohyeon Yoon, Jieun Hwang, Wonyoung Chang, Jaehoon Kim
In this study, we demonstrate that lignin, which constitutes 30-40 wt% of the terrestrial lignocellulosic biomass and is produced from 2nd-generation biofuel plants as a cheap byproduct, is an excellent precursor material for sodium-ion battery anodes (NIBs). Because it is rich in aromatic monomers that are highly crosslinked by ether and condensed bonds, the lignin material carbonized at 1300 °C (C-1300) in this study has small graphitic domains with well-developed graphene layers, a large interlayer spacing (0...
December 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29216465/optical-source-profiles-of-brown-carbon-in-size-resolved-particulate-matter-from-typical-domestic-biofuel-burning-over-guanzhong-plain-china
#14
Yali Lei, Zhenxing Shen, Tian Zhang, Qian Zhang, Qiyuan Wang, Jian Sun, Xuesong Gong, Junji Cao, Hongmei Xu, Suixin Liu, Liu Yang
In this study, both PM2.5 and size-resolved source samples were collected from a "heated kang" and an advanced stove to investigate the optical properties of brown carbon (BrC). The light-absorption coefficient (babs), the absorption Ångström exponent (AAE), and the mass absorption cross-section (MAC) of both water and methanol-extracted BrC were investigated. The methanol-extracted BrC (BrCmethanol) had higher light absorption than water-extracted BrC (BrCwater). The value of PM2.5 babs of BrCmethanol at 365nm (babs365,methanol) dramatically decreased from 64,669...
December 4, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29216330/genome-wide-analysis-of-the-brachypodium-distachyon-l-p-beauv-hsp90-gene-family-reveals-molecular-evolution-and-expression-profiling-under-drought-and-salt-stresses
#15
Ming Zhang, Zhiwei Shen, Guoqing Meng, Yu Lu, Yilei Wang
The structure, evolution, and function of heat shock proteins 90 (Hsp90s) have been investigated in great detail in fungi and animals. However, studies on the Hsp90 genes in plants are generally limited. Brachypodium distachyon (L.) P. Beauv., as a model plant for cereal crops, has become a potential biofuel grass. During its long evolution, the Hsp90 gene family in Brachypodium has developed some strategies to cope with adverse environments. How the Hsp90 gene family in Brachypodium evolved in different plant lineages and what its role is in plant responses to drought and salt stresses remains to be elucidated...
2017: PloS One
https://www.readbyqxmd.com/read/29214125/toward-wearable-energy-storage-devices-paper-based-biofuel-cells-based-on-a-screen-printing-array-structure
#16
Isao Shitanda, Misaki Momiyama, Naoto Watanabe, Tomohiro Tanaka, Seiya Tsujimura, Yoshinao Hoshi, Masayuki Itagaki
A novel paper-based biofuel cell with a series/parallel array structure has been fabricated, in which the cell voltage and output power can easily be adjusted as required by printing. The output of the fabricated 4-series/4-parallel biofuel cell reached 0.97±0.02 mW at 1.4 V, which is the highest output power reported to date for a paper-based biofuel cell. This work contributes to the development of flexible, wearable energy storage device.
October 2017: ChemElectroChem
https://www.readbyqxmd.com/read/29213329/oxygen-radical-pretreatment-promotes-cellulose-degradation-by-cellulolytic-enzymes
#17
Kiyota Sakai, Saki Kojiya, Junya Kamijo, Yuta Tanaka, Kenta Tanaka, Masahiro Maebayashi, Jun-Seok Oh, Masafumi Ito, Masaru Hori, Motoyuki Shimizu, Masashi Kato
Background: The efficiency of cellulolytic enzymes is important in industrial biorefinery processes, including biofuel production. Chemical methods, such as alkali pretreatment, have been extensively studied and demonstrated as effective for breaking recalcitrant lignocellulose structures. However, these methods have a detrimental effect on the environment. In addition, utilization of these chemicals requires alkali- or acid-resistant equipment and a neutralization step. Results: Here, a radical generator based on non-thermal atmospheric pressure plasma technology was developed and tested to determine whether oxygen-radical pretreatment enhances cellulolytic activity...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29213323/defined-tetra-allelic-gene-disruption-of-the-4-coumarate-coenzyme-a-ligase-1-pv4cl1-gene-by-crispr-cas9-in-switchgrass-results-in-lignin-reduction-and-improved-sugar-release
#18
Jong-Jin Park, Chang Geun Yoo, Amy Flanagan, Yunqiao Pu, Smriti Debnath, Yaxin Ge, Arthur J Ragauskas, Zeng-Yu Wang
Background: The development of genome editing technologies offers new prospects in improving bioenergy crops like switchgrass (Panicum virgatum). Switchgrass is an outcrossing species with an allotetraploid genome (2n = 4x = 36), a complexity which forms an impediment to generating homozygous knock-out plants. Lignin, a major component of the plant cell wall and a contributor to cellulosic feedstock's recalcitrance to decomposition, stands as a barrier to efficient biofuel production by limiting enzyme access to cell wall polymers during the fermentation process...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29213320/metabolome-analysis-reveals-a-role-for-glyceraldehyde-3-phosphate-dehydrogenase-in-the-inhibition-of-c-thermocellum-by-ethanol
#19
Liang Tian, Skyler J Perot, David Stevenson, Tyler Jacobson, Anthony A Lanahan, Daniel Amador-Noguez, Daniel G Olson, Lee R Lynd
Background: Clostridium thermocellum is a promising microorganism for conversion of cellulosic biomass to biofuel, without added enzymes; however, the low ethanol titer produced by strains developed thus far is an obstacle to industrial application. Results: Here, we analyzed changes in the relative concentration of intracellular metabolites in response to gradual addition of ethanol to growing cultures. For C. thermocellum, we observed that ethanol tolerance, in experiments with gradual ethanol addition, was twofold higher than previously observed in response to a stepwise increase in the ethanol concentration, and appears to be due to a mechanism other than mutation...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29213317/dynamic-changes-in-transcriptome-and-cell-wall-composition-underlying-brassinosteroid-mediated-lignification-of-switchgrass-suspension-cells
#20
Xiaolan Rao, Hui Shen, Sivakumar Pattathil, Michael G Hahn, Ivana Gelineo-Albersheim, Debra Mohnen, Yunqiao Pu, Arthur J Ragauskas, Xin Chen, Fang Chen, Richard A Dixon
Background: Plant cell walls contribute the majority of plant biomass that can be used to produce transportation fuels. However, the complexity and variability in composition and structure of cell walls, particularly the presence of lignin, negatively impacts their deconstruction for bioenergy. Metabolic and genetic changes associated with secondary wall development in the biofuel crop switchgrass (Panicum virgatum) have yet to be reported. Results: Our previous studies have established a cell suspension system for switchgrass, in which cell wall lignification can be induced by application of brassinolide (BL)...
2017: Biotechnology for Biofuels
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