journal
MENU ▼
Read by QxMD icon Read
search

Biotechnology for Biofuels

journal
https://www.readbyqxmd.com/read/27895710/in-situ-label-free-imaging-of-hemicellulose-in-plant-cell-walls-using-stimulated-raman-scattering-microscopy
#1
Yining Zeng, John M Yarbrough, Ashutosh Mittal, Melvin P Tucker, Todd B Vinzant, Stephen R Decker, Michael E Himmel
BACKGROUND: Plant hemicellulose (largely xylan) is an excellent feedstock for renewable energy production and second only to cellulose in abundance. Beyond a source of fermentable sugars, xylan constitutes a critical polymer in the plant cell wall, where its precise role in wall assembly, maturation, and deconstruction remains primarily hypothetical. Effective detection of xylan, particularly by in situ imaging of xylan in the presence of other biopolymers, would provide critical information for tackling the challenges of understanding the assembly and enhancing the liberation of xylan from plant materials...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27895709/the-dilemma-for-lipid-productivity-in-green-microalgae-importance-of-substrate-provision-in-improving-oil-yield-without-sacrificing-growth
#2
REVIEW
Kenneth Wei Min Tan, Yuan Kun Lee
Rising oil prices and concerns over climate change have resulted in more emphasis on research into renewable biofuels from microalgae. Unlike plants, green microalgae have higher biomass productivity, will not compete with food and agriculture, and do not require fertile land for cultivation. However, microalgae biofuels currently suffer from high capital and operating costs due to low yields and costly extraction methods. Microalgae grown under optimal conditions produce large amounts of biomass but with low neutral lipid content, while microalgae grown in nutrient starvation accumulate high levels of neutral lipids but are slow growing...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27895708/continuous-production-of-biohythane-from-hydrothermal-liquefied-cornstalk-biomass-via-two-stage-high-rate-anaerobic-reactors
#3
Bu-Chun Si, Jia-Ming Li, Zhang-Bing Zhu, Yuan-Hui Zhang, Jian-Wen Lu, Rui-Xia Shen, Chong Zhang, Xin-Hui Xing, Zhidan Liu
BACKGROUND: Biohythane production via two-stage fermentation is a promising direction for sustainable energy recovery from lignocellulosic biomass. However, the utilization of lignocellulosic biomass suffers from specific natural recalcitrance. Hydrothermal liquefaction (HTL) is an emerging technology for the liquefaction of biomass, but there are still several challenges for the coupling of HTL and two-stage fermentation. One particular challenge is the limited efficiency of fermentation reactors at a high solid content of the treated feedstock...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27895707/fungal-fermentation-on-anaerobic-digestate-for-lipid-based-biofuel-production
#4
Yuan Zhong, Zhiguo Liu, Christine Isaguirre, Yan Liu, Wei Liao
BACKGROUND: Anaerobic digestate is the effluent from anaerobic digestion of organic wastes. It contains a significant amount of nutrients and lignocellulosic materials, even though anaerobic digestion consumed a large portion of organic matters in the wastes. Utilizing the nutrients and lignocellulosic materials in the digestate is critical to significantly improve efficiency of anaerobic digestion technology and generate value-added chemical and fuel products from the organic wastes...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27895706/whole-genome-metabolic-model-of-trichoderma-reesei-built-by-comparative-reconstruction
#5
Sandra Castillo, Dorothee Barth, Mikko Arvas, Tiina M Pakula, Esa Pitkänen, Peter Blomberg, Tuulikki Seppanen-Laakso, Heli Nygren, Dhinakaran Sivasiddarthan, Merja Penttilä, Merja Oja
BACKGROUND: Trichoderma reesei is one of the main sources of biomass-hydrolyzing enzymes for the biotechnology industry. There is a need for improving its enzyme production efficiency. The use of metabolic modeling for the simulation and prediction of this organism's metabolism is potentially a valuable tool for improving its capabilities. An accurate metabolic model is needed to perform metabolic modeling analysis. RESULTS: A whole-genome metabolic model of T. reesei has been reconstructed together with metabolic models of 55 related species using the metabolic model reconstruction algorithm CoReCo...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27895705/improved-sugar-yields-from-biomass-sorghum-feedstocks-comparing-low-lignin-mutants-and-pretreatment-chemistries
#6
Bruno Godin, Nick Nagle, Scott Sattler, Richard Agneessens, Jérôme Delcarte, Edward Wolfrum
BACKGROUND: For biofuel production processes to be economically efficient, it is essential to maximize the production of monomeric carbohydrates from the structural carbohydrates of feedstocks. One strategy for maximizing carbohydrate production is to identify less recalcitrant feedstock cultivars by performing some type of experimental screening on a large and diverse set of candidate materials, or by identifying genetic modifications (random or directed mutations or transgenic plants) that provide decreased recalcitrance...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27891177/furfural-tolerance-and-detoxification-mechanism-in-candida-tropicalis
#7
Shizeng Wang, Gang Cheng, Chijioke Joshua, Zijun He, Xinxiao Sun, Ruimin Li, Lexuan Liu, Qipeng Yuan
BACKGROUND: Current biomass pretreatment by hydrothermal treatment (including acid hydrolysis, steam explosion, and high-temperature steaming) and ionic liquids generally generate inhibitors to the following fermentation process. Furfural is one of the typical inhibitors generated in hydrothermal treatment of biomass. Furfural could inhibit cell growth rate and decrease biofuel productivity of microbes. Candida tropicalis is a promising microbe for the production of biofuels and value-added chemicals using hemicellulose hydrolysate as carbon source...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27882076/redox-dependent-metabolic-shift-in-clostridium-autoethanogenum-by-extracellular-electron-supply
#8
Frauke Kracke, Bernardino Virdis, Paul V Bernhardt, Korneel Rabaey, Jens O Krömer
BACKGROUND: Microbial electrosynthesis is a novel approach that aims at shifting the cellular metabolism towards electron-dense target products by extracellular electron supply. Many organisms including several acetogenic bacteria have been shown to be able to consume electrical current. However, suitable hosts for relevant industrial processes are yet to be discovered, and major knowledge gaps about the underlying fundamental processes still remain. RESULTS: In this paper, we present the first report of electron uptake by the Gram-positive, ethanol-producing acetogen, Clostridium autoethanogenum...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27872661/production-of-l-lactic-acid-from-acid-pretreated-sugarcane-bagasse-using-bacillus-coagulans-dsm2314-in-a-simultaneous-saccharification-and-fermentation-strategy
#9
Edwin C van der Pol, Gerrit Eggink, Ruud A Weusthuis
BACKGROUND: Sugars derived from lignocellulose-rich sugarcane bagasse can be used as feedstock for production of l(+)-lactic acid, a precursor for renewable bioplastics. In our research, acid-pretreated bagasse was hydrolysed with the enzyme cocktail GC220 and fermented by the moderate thermophilic bacterium Bacillus coagulans DSM2314. Saccharification and fermentation were performed simultaneously (SSF), adding acid-pretreated bagasse either in one batch or in two stages. SSF was performed at low enzyme dosages of 10...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27872660/improvement-of-catalytic-performance-of-lignin-peroxidase-for-the-enhanced-degradation-of-lignocellulose-biomass-based-on-the-imbedded-electron-relay-in-long-range-electron-transfer-route
#10
Le Thanh Mai Pham, Su Jin Kim, Yong Hwan Kim
BACKGROUND: Although lignin peroxidase is claimed as a key enzyme in enzyme-catalyzed lignin degradation, in vitro enzymatic degradation of lignin was not easily observed in lab-scale experiments. It implies that other factors may hinder the enzymatic degradation of lignin. Irreversible interaction between phenolic compound and lignin peroxidase was hypothesized when active enzyme could not be recovered after the reaction with degradation product (guaiacol) of lignin phenolic dimer. RESULTS: In the study of lignin peroxidase isozyme H8 from white-rot fungi Phanerochaete chrysosporium (LiPH8), W251 site was revealed to make the covalent coupling with one moiety of monolignolic radical (guaiacol radical) by LC-MS/MS analysis...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27872659/whole-genome-de-novo-sequencing-combined-with-rna-seq-analysis-reveals-unique-genome-and-physiological-features-of-the-amylolytic-yeast-saccharomycopsis-fibuligera-and-its-interspecies-hybrid
#11
Jin Ho Choo, Chang Pyo Hong, Jae Yun Lim, Jeong-Ah Seo, Young-Suk Kim, Dong Wook Lee, Sin-Gi Park, Gir Won Lee, Emily Carroll, Yin-Won Lee, Hyun Ah Kang
BACKGROUND: Genomic studies on fungal species with hydrolytic activity have gained increased attention due to their great biotechnological potential for biomass-based biofuel production. The amylolytic yeast Saccharomycopsis fibuligera has served as a good source of enzymes and genes involved in saccharification. Despite its long history of use in food fermentation and bioethanol production, very little is known about the basic physiology and genomic features of S. fibuligera. RESULTS: We performed whole-genome (WG) de novo sequencing and complete assembly of S...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27843490/presence-does-not-imply-activity-dna-and-rna-patterns-differ-in-response-to-salt-perturbation-in-anaerobic-digestion
#12
Jo De Vrieze, Leticia Regueiro, Ruben Props, Ramiro Vilchez-Vargas, Ruy Jáuregui, Dietmar H Pieper, Juan M Lema, Marta Carballa
BACKGROUND: The microbial community in anaerobic digestion is mainly monitored by means of DNA-based methods. This may lead to incorrect interpretation of the community parameters, because microbial abundance does not necessarily reflect activity. In this research, the difference between microbial community response on DNA (total community) and RNA (active community) based on the 16S rRNA (gene) with respect to salt concentration and response time was evaluated. RESULTS: The application of higher NaCl concentrations resulted in a decrease in methane production...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27843489/long-term-adaptive-evolution-of-leuconostoc-mesenteroides-for-enhancement-of-lactic-acid-tolerance-and-production
#13
Si Yeon Ju, Jin Ho Kim, Pyung Cheon Lee
BACKGROUND: Lactic acid has been approved by the United States Food and Drug Administration as Generally Regarded As Safe (GRAS) and is commonly used in the cosmetics, pharmaceutical, and food industries. Applications of lactic acid have also emerged in the plastics industry. Lactic acid bacteria (LAB), such as Leuconostoc and Lactobacillus, are widely used as lactic acid producers for food-related and biotechnological applications. Nonetheless, industrial mass production of lactic acid in LAB is a challenge mainly because of growth inhibition caused by the end product, lactic acid...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27833657/flowthrough-pretreatment-with-very-dilute-acid-provides-insights-into-high-lignin-contribution-to-biomass-recalcitrance
#14
Samarthya Bhagia, Hongjia Li, Xiadi Gao, Rajeev Kumar, Charles E Wyman
BACKGROUND: Flowthrough pretreatment is capable of removing much higher quantities of hemicellulose and lignin from lignocellulosic biomass than batch pretreatment performed at otherwise similar conditions. Comparison of these two pretreatment configurations for sugar yields and lignin removal can provide insights into lignocellulosic biomass deconstruction. Therefore, we applied liquid hot water (LHW) and extremely dilute acid (EDA, 0.05%) flowthrough and batch pretreatments of poplar at two temperatures and the same pretreatment severity for the solids...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27833656/metagenomic-and-metaproteomic-analyses-of-a-corn-stover-adapted-microbial-consortium-emsd5-reveal-its-taxonomic-and-enzymatic-basis-for-degrading-lignocellulose
#15
Ning Zhu, Jinshui Yang, Lei Ji, Jiawen Liu, Yi Yang, Hongli Yuan
BACKGROUND: Microbial consortia represent promising candidates for aiding in the development of plant biomass conversion strategies for biofuel production. However, the interaction between different community members and the dynamics of enzyme complements during the lignocellulose deconstruction process remain poorly understood. We present here a comprehensive study on the community structure and enzyme systems of a lignocellulolytic microbial consortium EMSD5 during growth on corn stover, using metagenome sequencing in combination with quantitative metaproteomics...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27833655/what-could-the-entire-cornstover-contribute-to-the-enhancement-of-waste-activated-sludge-acidification-performance-assessment-and-microbial-community-analysis
#16
Aijuan Zhou, Jiaguang Zhang, Kaili Wen, Zhihong Liu, Guoying Wang, Wenzong Liu, Aijie Wang, Xiuping Yue
BACKGROUND: Volatile fatty acids (VFAs) production from waste activated sludge (WAS) digestion is constrained by unbalanced nutrient composition (low carbon-to-nitrogen ratio). Characteristics conditioning by extra carbon sources, normally in the mixture of raw solid, has been reported to be an efficient approach to enhance WAS acidification. However, little attention has been paid to the contributions of other adjustment forms. Moreover, the corresponding ecological estimation has not been investigated yet...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27833654/bioinformatic-characterization-of-type-specific-sequence-and-structural-features-in-auxiliary-activity-family-9-proteins
#17
Vuyani Moses, Rowan Hatherley, Özlem Tastan Bishop
BACKGROUND: Due to the impending depletion of fossil fuels, it has become important to identify alternative energy sources. The biofuel industry has proven to be a promising alternative. However, owing to the complex nature of plant biomass, hence the degradation, biofuel production remains a challenge. The copper-dependent Auxiliary Activity family 9 (AA9) proteins have been found to act synergistically with other cellulose-degrading enzymes resulting in an increased rate of cellulose breakdown...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27833653/valorization-of-lignin-and-cellulose-in-acid-steam-exploded-corn-stover-by-a-moderate-alkaline-ethanol-post-treatment-based-on-an-integrated-biorefinery-concept
#18
Sheng Yang, Yue Zhang, Wen Yue, Wei Wang, Yun-Yan Wang, Tong-Qi Yuan, Run-Cang Sun
BACKGROUND: Due to the unsustainable consumption of fossil resources, great efforts have been made to convert lignocellulose into bioethanol and commodity organic compounds through biological methods. The conversion of cellulose is impeded by the compactness of plant cell wall matrix and crystalline structure of the native cellulose. Therefore, appropriate pretreatment and even post-treatment are indispensable to overcome this problem. Additionally, an adequate utilization of coproduct lignin will be important for improving the economic viability of modern biorefinery industries...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27826356/inhibition-of-microbial-biofuel-production-in-drought-stressed-switchgrass-hydrolysate
#19
Rebecca Garlock Ong, Alan Higbee, Scott Bottoms, Quinn Dickinson, Dan Xie, Scott A Smith, Jose Serate, Edward Pohlmann, Arthur Daniel Jones, Joshua J Coon, Trey K Sato, Gregg R Sanford, Dustin Eilert, Lawrence G Oates, Jeff S Piotrowski, Donna M Bates, David Cavalier, Yaoping Zhang
BACKGROUND: Interannual variability in precipitation, particularly drought, can affect lignocellulosic crop biomass yields and composition, and is expected to increase biofuel yield variability. However, the effect of precipitation on downstream fermentation processes has never been directly characterized. In order to investigate the impact of interannual climate variability on biofuel production, corn stover and switchgrass were collected during 3 years with significantly different precipitation profiles, representing a major drought year (2012) and 2 years with average precipitation for the entire season (2010 and 2013)...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27826355/piezo-tolerant-natural-gas-producing-microbes-under-accumulating-pco2
#20
Ralph E F Lindeboom, Seung Gu Shin, Jan Weijma, Jules B van Lier, Caroline M Plugge
BACKGROUND: It is known that a part of natural gas is produced by biogenic degradation of organic matter, but the microbial pathways resulting in the formation of pressurized gas fields remain unknown. Autogeneration of biogas pressure of up to 20 bar has been shown to improve the quality of biogas to the level of biogenic natural gas as the fraction of CO2 decreased. Still, the pCO2 is higher compared to atmospheric digestion and this may affect the process in several ways. In this work, we investigated the effect of elevated pCO2 of up to 0...
2016: Biotechnology for Biofuels
journal
journal
41752
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"