The low secretion levels of cellobiohydrolase I (CBHI) in yeasts are one of the key barriers preventing yeast from directly degrading and utilizing lignocellulose. To overcome this obstacle, we have explored t...
Authors: Qi Xu, Markus Alahuhta, Hui Wei, Eric P. Knoshaug, Wei Wang, John O. Baker, Todd Vander Wall, Michael E. Himmel and Min Zhang
Fumaric acid is widely used in food and pharmaceutical industries and is recognized as a versatile industrial chemical feedstock. Increasing concerns about energy and environmental problems have resulted in a ...
Authors: Shuying Gu, Jingen Li, Bingchen Chen, Tao Sun, Qian Liu, Dongguang Xiao and Chaoguang Tian
The greenhouse gas (GHG) mitigation is one of the most important environmental benefits of using bioenergy replacing fossil fuels. Nitrous oxide (N2O) and methane (CH4) are important GHGs and have drawn extra att...
Authors: Jia Mi, Wei Liu, Xuhong Zhao, Lifang Kang, Cong Lin, Juan Yan and Tao Sang
The use of inedible lignocellulosic biomasses for biomanufacturing provides important environmental and economic benefits for society. Efficient co-utilization of lignocellulosic biomass-derived sugars, primar...
Authors: Zhaojuan Zheng, Ting Jiang, Lihua Zou, Shuiping Ouyang, Jie Zhou, Xi Lin, Qin He, Limin Wang, Bo Yu, Haijun Xu and Jia Ouyang
Effective enzymatic degradation of crystalline polysaccharides requires a synergistic cocktail of hydrolytic enzymes tailored to the wide-ranging degree of substrate crystallinity. To accomplish this type of t...
Authors: Abhishek A. Kognole and Christina M. Payne
Biological pretreatment is an environmentally safe method for disrupting recalcitrant structures of lignocellulose and thereby improving their hydrolysis efficiency. Expansin and expansin-like proteins act syn...
Authors: Yuhao Duan, Yuanyuan Ma, Xudong Zhao, Renliang Huang, Rongxin Su, Wei Qi and Zhimin He
Metabolic engineering has emerged as a potential strategy for improving microalgal lipid content through targeted changes to lipid metabolic networks. However, the intricate nature of lipogenesis has impeded m...
Authors: Xiang Wang, Hong-Po Dong, Wei Wei, Srinivasan Balamurugan, Wei-Dong Yang, Jie-Sheng Liu and Hong-Ye Li
Biofilms are cell communities wherein cells are embedded in a self-produced extracellular polymeric substances (EPS). The biofilm of Clostridium acetobutylicum confers the cells superior phenotypes and has been e...
Although various pre-treatment methods have been developed to disrupt the structure of lignocellulosic biomass, high dosage of cellulases is still required to hydrolyze lignocellulose to fermentable sugars. En...
Authors: Ye Yuan, Rui Zhai, Ying Li, Xiangxue Chen and Mingjie Jin
The filamentous fungus Trichoderma reesei (anamorph of Hypocrea jecorina) displays increased cellulase expression while growing on inducers such as lactose or cellulose. However, the mechanism of cellulase induct...
Authors: Gen Zou, Yanping Jiang, Rui Liu, Zhihua Zhu and Zhihua Zhou
In photosynthetic oleaginous microalgae, acyl-CoA molecules are used as substrates for the biosynthesis of membrane glycerolipids, triacylglycerol (TAG) and other acylated molecules. Acyl-CoA can also be direc...
Authors: Xiahui Hao, Ling Luo, Juliette Jouhet, Fabrice Rébeillé, Eric Maréchal, Hanhua Hu, Yufang Pan, Xiaoming Tan, Zhuo Chen, Lingjie You, Hong Chen, Fang Wei and Yangmin Gong
The authors have retracted this article [1] because due to a mistake in the laboratory, SEC analyses of some of the lignin samples used had already been published as part of another article [2]. The data in th...
Authors: Krithika Ravi, Omar Y. Abdelaziz, Matthias Nöbel, Javier García-Hidalgo, Marie F. Gorwa-Grauslund, Christian P. Hulteberg and Gunnar Lidén
Citation:Biotechnology for Biofuels
2018
11:313
Published on: 12 November 2018
The
original article was published in Biotechnology for Biofuels
2018
11:240
As a sustainable industrial process, the production of dicarboxylic acids (DCAs), used as precursors of polyamides, polyesters, perfumes, plasticizers, lubricants, and adhesives, from vegetable oil has continu...
Authors: Heeseok Lee, Changpyo Han, Hyeok-Won Lee, Gyuyeon Park, Wooyoung Jeon, Jungoh Ahn and Hongweon Lee
Poly-γ-glutamic acid (γ-PGA) is a natural polymer with great potential applications in areas of agriculture, industry, and pharmaceutical. The biodiesel-derived glycerol can be used as an attractive feedstock ...
Authors: Yangyang Zhan, Bojie Sheng, Huan Wang, Jiao Shi, Dongbo Cai, Li Yi, Shihui Yang, Zhiyou Wen, Xin Ma and Shouwen Chen
Acetylated galactoglucomannan (AcGGM) is a complex hemicellulose found in softwoods such as Norway spruce (Picea abies). AcGGM has a large potential as a biorefinery feedstock and source of oligosaccharides for h...
Authors: Leszek Michalak, Svein Halvor Knutsen, Ida Aarum and Bjørge Westereng
The recalcitrant structure of lignocellulosic biomass made it challenging for their bioconversion into biofuels and biochemicals. Pretreatment was required to deconstruct the intact structure by the removal of...
Authors: Hongdan Zhang, Weiqi Wei, Jiajie Zhang, Shihang Huang and Jun Xie
Due to scarcity of fossil fuel, the importance of alternative energy sources is ever increasing. The oleaginous microalgae have demonstrated their potential as an alternative source of energy, but have not ach...
Authors: Chitralekha Nag Dasgupta, Sanjeeva Nayaka, Kiran Toppo, Atul Kumar Singh, Uday Deshpande and Amitabikram Mohapatra
The biological production of 2,3-butanediol from xylose-rich raw materials from Klebsiella pneumoniae is a low-cost process. RpoD, an encoding gene of the sigma factor, is the key element in global transcription ...
2-Phenylethanol (2-PE) is a higher aromatic alcohol that is widely used in the perfumery, cosmetics, and food industries and is also a potentially valuable next-generation biofuel. In our previous study, a new...
Authors: Changqing Liu, Kai Zhang, Wenyan Cao, Ge Zhang, Guoqiang Chen, Haiyan Yang, Qian Wang, Haobao Liu, Mo Xian and Haibo Zhang
The ability to use organic solvents in enzyme reactions offers a number of industrially useful advantages. However, most enzymes are almost completely inactive in the presence of organic solvents. Thus, organi...
Authors: Hyo-Jung Lee, Yong-Suk Lee and Yong-Lark Choi
The white rot fungus Irpex lacteus exhibits a great potential in biopretreatment of lignocellulose as well as in biodegradation of xenobiotic compounds by extracellular ligninolytic enzymes. Among these enzymes, ...
Authors: Xing Qin, Huiying Luo, Xiaoyu Zhang, Bin Yao, Fuying Ma and Xiaoyun Su
Lignin is a promising source of building blocks for upgrading to valuable aromatic chemicals and materials. Endocarp biomass represents a non-edible crop residue in an existing agricultural setting which canno...
Authors: Wenqi Li, Kirtley Amos, Mi Li, Yunqiao Pu, Seth Debolt, Arthur J. Ragauskas and Jian Shi
Methanogenic archaea are of importance to the global C-cycle and to biological methane (CH4) production through anaerobic digestion and pure culture. Here, the individual and combined effects of copper (Cu), zinc...
Authors: Annalisa Abdel Azim, Simon K.-M. R. Rittmann, Debora Fino and Günther Bochmann
Bacterial insertion sequences (ISs) are ubiquitous mobile genetic elements that play important roles in genome plasticity, cell adaptability, and function evolution. ISs of various families and subgroups conta...
Authors: Ya-Jun Liu, Kuan Qi, Jie Zhang, Chao Chen, Qiu Cui and Yingang Feng
The release of refined soybean oil wastewater (RSOW) with a high chemical oxygen demand (COD) and oil content burdens the environment. The conversion of RSOW into lipids by oleaginous yeasts may be a good way ...
Authors: Dayu Yu, Xiaoning Wang, Xue Fan, Huimin Ren, Shuang Hu, Lei Wang, Yunfen Shi, Na Liu and Nan Qiao
Rice not only produces grains for human beings, but also provides large amounts of lignocellulose residues, which recently highlighted as feedstock for biofuel production. Genetic modification of plant cell wa...
Authors: Fengcheng Li, Sitong Liu, Hai Xu and Quan Xu
The yeast Saccharomyces cerevisiae plays an essential role in the fermentation of lignocellulosic hydrolysates. Weak organic acids in lignocellulosic hydrolysate can hamper the use of this renewable resource for ...
Authors: Zhong-peng Guo, Sakda Khoomrung, Jens Nielsen and Lisbeth Olsson
Lytic polysaccharide monooxygenases (LPMOs) are copper-dependent enzymes that oxidatively cleave recalcitrant lignocellulose in the presence of oxygen or hydrogen peroxide as co-substrate and a reducing agent ...
Authors: Madhu Nair Muraleedharan, Dimitrios Zouraris, Antonis Karantonis, Evangelos Topakas, Mats Sandgren, Ulrika Rova, Paul Christakopoulos and Anthi Karnaouri
Cellulose is the most abundant biological polymer on earth, making it an attractive substrate for the production of next-generation biofuels and commodity chemicals. However, the economics of cellulose utiliza...
Authors: Anthony P. Neumann, Paul J. Weimer and Garret Suen
The bamboo weevil Cyrtotrachelus buqueti, which is considered a pest species, damages bamboo shoots via its piercing–sucking mode of feeding. C. buqueti is well known for its ability to transform bamboo shoot bio...
Authors: Chaobing Luo, Yuanqiu Li, Hong Liao and Yaojun Yang
Plant biomass is an abundant but underused feedstock for bioenergy production due to its complex and variable composition, which resists breakdown into fermentable sugars. These feedstocks, however, are routin...
Authors: Casey A. Hooker, Ethan T. Hillman, Jonathan C. Overton, Adrian Ortiz-Velez, Makayla Schacht, Abigail Hunnicutt, Nathan S. Mosier and Kevin V. Solomon
Recent advances in metabolic engineering enable the production of chemicals from sugars through microbial bio-conversion. Terpenes have attracted substantial attention due to their relatively high prices and w...
In addition to its outstanding cellulase production ability, Trichoderma reesei produces a wide variety of valuable secondary metabolites, the production of which has not received much attention to date. Among th...
Mechanical refining is a low-capital and well-established technology used in pulp and paper industry to improve fiber bonding for product strength. Refining can also be applied in a biorefinery context to over...
Authors: Tiago de Assis, Shixin Huang, Carlos Eduardo Driemeier, Bryon S. Donohoe, Chaehoon Kim, Seong H. Kim, Ronalds Gonzalez, Hasan Jameel and Sunkyu Park
Asymmetric aldol-type C–C bond formation with ketones used as electrophilic receptor remains a challenging reaction for aldolases as biocatalysts. To date, only one kind of dihydroxyacetone phosphate (DHAP)-de...
Authors: Jiangang Yang, Yueming Zhu, Ge Qu, Yan Zeng, Chaoyu Tian, Caixia Dong, Yan Men, Longhai Dai, Zhoutong Sun, Yuanxia Sun and Yanhe Ma
One of the major obstacles of acetone–butanol–ethanol (ABE) fermentation from renewable biomass resources is the energy-intensive separation process. To decrease the energy demand of the ABE downstream separat...
Authors: Huidong Chen, Di Cai, Changjing Chen, Jianhong Wang, Peiyong Qin and Tianwei Tan
Pretreatment of biomass to maximize the recovery of fermentable sugars as well as to minimize the amount of enzyme inhibitors formed during the pretreatment is a challenge in biofuel process. We develop a modi...
Authors: Hui-Tse Yu, Bo-Yu Chen, Bing-Yi Li, Mei-Chun Tseng, Chien-Chung Han and Shin-Guang Shyu
Aviation fuels are an important target of biofuels research due to their high market demand and competitive price. Isoprenoids have been demonstrated as good feedstocks for advanced renewable
jet fuels with h...
Authors: Chun-Li Liu, Tian Tian, Jorge Alonso-Gutierrez, Brett Garabedian, Shuai Wang, Edward E. K. Baidoo, Veronica Benites, Yan Chen, Christopher J. Petzold, Paul D. Adams, Jay D. Keasling, Tianwei Tan and Taek Soon Lee
Aliphatic hydrocarbons of microbial origin are highly interesting candidate biofuels because these molecules are identical or very similar to the main components of petroleum-based gasoline and diesel fuels. T...
Authors: Angel Angelov, Maria Übelacker and Wolfgang Liebl
Lignocellulose is the most abundant renewable carbon resource that can be used for biofuels and commodity chemicals production. The ability of complex microbial communities present in natural environments that...
Authors: Adèle Lazuka, Lucas Auer, Michael O’Donohue and Guillermina Hernandez-Raquet
Toxic compounds present in both the hydrolysate and pyrolysate of lignocellulosic biomass severely hinder the further conversion of lignocellulose-derived fermentable sugars into useful chemicals by common bio...
Authors: Dongdong Chang, Zhisheng Yu, Zia Ul Islam, W. Todd French, Yiming Zhang and Hongxun Zhang
Genome shuffling (GS) is a widely adopted methodology for the evolutionary engineering of desirable traits in industrially relevant microorganisms. We have previously used genome shuffling to generate a strain...
Authors: Damien Biot-Pelletier, Dominic Pinel, Kane Larue and Vincent J. J. Martin
One of the main challenges of acetone–butanol–ethanol fermentation is to reduce acetone production with high butanol yield. Converting acetone into isopropanol is an alternative pathway to reduce fermentation ...
Current EU directives demand increased use of renewable fuels in the transportation sector but restrict governmental support for production of biofuels produced from crops. The use of intercropped lucerne and ...
Authors: Eoin Byrne, Krisztina Kovacs, Ed W. J. van Niel, Karin Willquist, Sven-Erik Svensson and Emma Kreuger
Renewable raw materials in sustainable biorefinery processes pose new challenges to the manufacturing routes of platform chemicals. Beside the investigations of individual unit operations, the research on proc...
Authors: Lars Regestein, Tobias Klement, Philipp Grande, Dirk Kreyenschulte, Benedikt Heyman, Tim Maßmann, Armin Eggert, Robert Sengpiel, Yumei Wang, Nick Wierckx, Lars M. Blank, Antje Spiess, Walter Leitner, Carsten Bolm, Matthias Wessling, Andreas Jupke…
The thermotolerant methylotrophic yeast Ogataea polymorpha has been regarded as an important organism for basic research and biotechnological applications. It is generally recognized as an efficient and safe cell...
Authors: Laiyou Wang, Aihua Deng, Yun Zhang, Shuwen Liu, Yong Liang, Hua Bai, Di Cui, Qidi Qiu, Xiuling Shang, Zhao Yang, Xiuping He and Tingyi Wen
One important metabolic engineering strategy is to localize the enzymes close to their substrates for improved catalytic efficiency. However, localization configurations become more complex the greater the num...
Authors: Lijun Ye, Xinna Zhu, Tao Wu, Wen Wang, Dongdong Zhao, Changhao Bi and Xueli Zhang
Duckweeds (Lemnaceae) are efficient aquatic plants for wastewater treatment due to their high nutrient-uptake capabilities and resilience to severe environmental conditions. Combined with their rapid growth ra...
Authors: Ozgul Calicioglu, Michael J. Shreve, Tom L. Richard and Rachel A. Brennan
Perfect and low cost of fungal amylolytic and cellulolytic enzymes are prerequisite for the industrialization of plant biomass biorefinergy to biofuels. Genetic engineering of fungal strains based on regulator...
Authors: Gui-Yan Liao, Shuai Zhao, Ting Zhang, Cheng-Xi Li, Lu-Sheng Liao, Feng-Fei Zhang, Xue-Mei Luo and Jia-Xun Feng
Demand-driven biogas production could play an important role for future sustainable energy supply. However, feeding a biogas reactor according to energy demand may lead to organic overloading and, thus, to pro...
