1
|
Wen P, Chen Z, Lian Z, Zhang J. Efficient production of high concentration monosaccharides and ethanol from poplar wood after delignification and deacetylation. BIORESOURCE TECHNOLOGY 2023:129459. [PMID: 37419287 DOI: 10.1016/j.biortech.2023.129459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/02/2023] [Accepted: 07/03/2023] [Indexed: 07/09/2023]
Abstract
Efficient enzymatic hydrolysis is required for production of high concentration monosaccharides and ethanol. The lignin and acetyl group in poplar can limit the enzymatic hydrolysis. However, the effect of delignification combined with deacetylation on the saccharification of poplar for high concentration monosaccharides was not clear. Herein, hydrogen peroxide-acetic acid (HPAA) was used for delignification and sodium hydroxide was used for deacetylation to enhance the hydrolyzability of poplar. Delignification with 60% HPAA at 80 °C could remove 81.9% lignin. Acetyl group was completely removed with 0.5% NaOH at 60 °C. After saccharification, 318.1 g/L monosaccharides were obtained with a poplar loading of 35% (w/v). After simultaneous saccharification and fermentation, 114.9 g/L bioethanol was gained from delignified and deacetylated poplar. Those results showed the highest monosaccharides and ethanol concentrations in reported research. This developed strategy with relatively low temperature could effectively improve the production of high concentration monosaccharide and ethanol from poplar.
Collapse
Affiliation(s)
- Peiyao Wen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhangjing Chen
- Department of Sustainable Biomaterials Virginia Tech University, 1650 Research Center Drive, Blacksburg, VA 24060, USA
| | - Zhina Lian
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Junhua Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China.
| |
Collapse
|
2
|
Suman SK, Malhotra M, Kurmi AK, Narani A, Bhaskar T, Ghosh S, Jain SL. Jute sticks biomass delignification through laccase-mediator system for enhanced saccharification and sustainable release of fermentable sugar. CHEMOSPHERE 2022; 286:131687. [PMID: 34343919 DOI: 10.1016/j.chemosphere.2021.131687] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/13/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
Jute sticks obtained after the extraction of jute fiber are an excellent biomass feedstock with a significant amount of carbohydrates that makes it an attractive resource for sustainable energy generation. However, the high lignin content in the jute stick hinders the cellulosic component of the cell wall from enzymatic hydrolysis.This work demonstrates the lignin degradation of jute stick biomass by Trametes maxima laccase in the presence of mediator Hydroxybenzotriazole and improvement in its subsequent saccharification. Lignin component in jute stick is reduced by 21.8% in a single reaction treatment with laccase-mediator compared to the untreated jute stick sample used as control. The yield of fermentable sugar is increased by 19.5% that verifies enhanced saccharification after lignin removal. Delignification of jute stick was corroborated through different analytical techniques. The Pyrolysis gas chromatography/mass spectrometry results further confirms abundance of S lignin unit in the jute stick compared to the H and G unit and modification in lignin polymer as a change in the syringyl-to-guaiacyl ratio. Hence, this work demonstrates that jute stick can be effectively delignified using biocatalyst-mediator system and utilized as biomass source, thus contributing in circular bio-economy through waste valorization.
Collapse
Affiliation(s)
- Sunil Kumar Suman
- CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, Uttarakhand, India
| | - Manisha Malhotra
- CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, Uttarakhand, India
| | - Akhilesh Kumar Kurmi
- CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, Uttarakhand, India
| | - Anand Narani
- CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, Uttarakhand, India
| | - Thallada Bhaskar
- CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, Uttarakhand, India
| | - Sanjoy Ghosh
- Indian Institute of Technology, Haridwar Highway, Roorkee, 247667, Uttarakhand, India
| | - Suman Lata Jain
- CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, Uttarakhand, India.
| |
Collapse
|
3
|
Thygesen A, Tsapekos P, Alvarado-Morales M, Angelidaki I. Valorization of municipal organic waste into purified lactic acid. BIORESOURCE TECHNOLOGY 2021; 342:125933. [PMID: 34852434 DOI: 10.1016/j.biortech.2021.125933] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Municipal organic waste (biowaste) consists of food derived starch, protein and sugars, and lignocellulose derived cellulose, hemicellulose, lignin and pectin. Proper management enables nutrient recycling and sustainable production of platform chemicals such as lactic acid (LA). This review gathers the most important information regarding use of biowaste for LA fermentation covering pre-treatment, enzymatic hydrolysis, fermentation and downstream processing to achieve high purity LA. The optimal approach was found to treat the two biowaste fractions separately due to different pre-treatment and enzyme needs for achieving enzymatic hydrolysis and to do continues fermentation to achieve high cell density and high LA productivity up to 12 g/L/h for production of both L and D isomers. The specific productivity was 0.4 to 0.5 h-1 but with recalcitrant biomass, the enzymatic hydrolysis was rate limiting. Novel purification approaches included reactive distillation and emulsion liquid membrane separation yielding purities sufficient for polylactic acid production.
Collapse
Affiliation(s)
- Anders Thygesen
- Bioconversion Group, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads 228A, DK-2800 Kgs. Lyngby, Denmark.
| | - Panagiotis Tsapekos
- Bioconversion Group, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads 228A, DK-2800 Kgs. Lyngby, Denmark.
| | - Merlin Alvarado-Morales
- Bioconversion Group, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads 228A, DK-2800 Kgs. Lyngby, Denmark.
| | - Irini Angelidaki
- Bioconversion Group, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads 228A, DK-2800 Kgs. Lyngby, Denmark.
| |
Collapse
|
4
|
Zhang L, Zhang W, Zhang F, Jiang J. Xylo-oligosaccharides and lignin production from Camellia oleifera shell by malic acid hydrolysis at mild conditions. BIORESOURCE TECHNOLOGY 2021; 341:125897. [PMID: 34523561 DOI: 10.1016/j.biortech.2021.125897] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/31/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
Camellia oleifera shell (COS), a by-product of processing woody vegetable oil, is rich in hemicellulose and lignin. In this study, we investigated the effects of acid concentration, pretreatment temperature and reaction time on the concentration and yield of xylo-oligosaccharides (XOS) and the degree of polymerization (DP) distribution of XOS when pretreating COS with malic acid (MA). Under moderate condition (2 M MA, 120 ℃, 30 min), the maximum yield of XOS with DP 2-4 was 48.78% (based on the initial xylan) with low xylose, 5-hydroxymethylfurfural (HMF) and furfural, in which xylobiose (X2), xylotriose (X3) and xylotraose (X4) concentrations were 5.22 g/L, 2.75 g/L and 2.91 g/L, respectively. In addition, acid-insoluble lignin (AIL) in the residue after MA pretreatment and milling wood lignin (MWL) were mainly composed of guaiacyl and syringyl. AIL has higher thermal stability than MWL, which can be the stabilizer for producing flame-resistant materials.
Collapse
Affiliation(s)
- Leping Zhang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, National Forest and Grass Administration Woody Spices (East China) Engineering Technology Research Center, Beijing Forestry University, Beijing 100083, China
| | - Weiwei Zhang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, National Forest and Grass Administration Woody Spices (East China) Engineering Technology Research Center, Beijing Forestry University, Beijing 100083, China
| | - Fenglun Zhang
- Nanjing Institute for the Comprehensive Utilization of Wild Plants, Nanjing 210042, China
| | - Jianxin Jiang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, National Forest and Grass Administration Woody Spices (East China) Engineering Technology Research Center, Beijing Forestry University, Beijing 100083, China.
| |
Collapse
|
5
|
Zhang Y, Bao J. Tolerance of Trichosporon cutaneum to lignin derived phenolic aldehydes facilitate the cell growth and cellulosic lipid accumulation. J Biotechnol 2021; 343:32-37. [PMID: 34537255 DOI: 10.1016/j.jbiotec.2021.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 07/29/2021] [Accepted: 09/11/2021] [Indexed: 11/15/2022]
Abstract
Phenolic aldehydes are the major inhibitors from lignocellulose pretreatment. Previous studies show that oleaginous yeasts are difficult to survive in lignocellulosic hydrolysates even after the removal of furan aldehydes and organic acids inhibitors. This study investigated the cell viability, sugar consumption and lipid accumulation of the major oleaginous yeasts including Trichosporon cutaneum, Rhodosporidium toruloides, Rhodotorula glutinis, Yarrowia lipolytica in wheat straw hydrolysate containing only phenolic aldehydes after furan aldehydes and organic acids were selectively degraded by microorganisms. The results confirmed that the existence of residual phenolic aldehydes was the major reason for poor cell growth and metabolism of oleaginous yeasts. Only T. cutaneum demonstrated the higher tolerance by biodegrading phenolic aldehydes and the satisfactory cell growth and lipid production were obtained. This study revealed that T. cutaneum might be one of the promising cell factories for microbial lipid production from lignocellulosic feedstock.
Collapse
Affiliation(s)
- Yi Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jie Bao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| |
Collapse
|
6
|
Recent progress in metabolic engineering of Corynebacterium glutamicum for the production of C4, C5, and C6 chemicals. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0788-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
7
|
Yang JJ, Rahim AR, Yang AJ, Chuang TH, Huang CM. Production of electricity and reduction of high-fat diet-induced IL-6 by glucose fermentation of Leuconostoc mesenteroides. Biochem Biophys Res Commun 2020; 533:651-656. [PMID: 33008603 PMCID: PMC7525268 DOI: 10.1016/j.bbrc.2020.09.105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/16/2020] [Indexed: 12/11/2022]
Abstract
Electrogenic bacteria can mediate electron transfer to conserve energy and promote growth. To examine bacterial electrogenicity, an L. mesenteroides EH-1 strain was cultured in rich media in the presence and absence of 2% glucose. After 12 h incubation, glucose triggered fermentation of L. mesenteroides EH-1 to produce >10 mmol/l acetate and elicit electricity measured by voltage changes. The electricity production was mediated by glucose fermentation since pre-treatment of L. mesenteroides EH-1 with furfural, a fermentation inhibitor, completely diminished the voltage increases. The deficiency of furfural pre-treated L. mesenteroides EH-1 in electricity production can be restored by the external addition of acetate into the bacterial culture, suggesting the function of acetate as an electron donor. Oral administration of HFD-fed mice with L. mesenteroides EH-1 in the presence or absence of glucose significantly attenuated the high level of pro-inflammatory IL-6 cytokine in blood. Bacterial electricity can be elicited by fermentation. Supplementation of fermenting and electrogenic L. mesenteroides EH-1 may provide a novel approach for the reduction of pro-inflammatory IL-6 cytokine that increased in chronic inflammation, autoimmune diseases, cancers, and infections.
Collapse
Affiliation(s)
| | - Adelia Riezka Rahim
- Department of Biomedical Sciences and Engineering, National Central University, Taiwan
| | - Albert Jackson Yang
- Department of Biomedical Sciences and Engineering, National Central University, Taiwan
| | | | - Chun-Ming Huang
- Department of Biomedical Sciences and Engineering, National Central University, Taiwan.
| |
Collapse
|
8
|
Direct separation of acetate and furfural from xylose by nanofiltration of birch pretreated liquor: Effect of process conditions and separation mechanism. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116546] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
9
|
Developing Process Designs for Biorefineries—Definitions, Categories, and Unit Operations. ENERGIES 2020. [DOI: 10.3390/en13061493] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In this review, we focus on the literature that described the various unit operations in a process design flowsheet of biorefineries. We begin by establishing the accepted definitions of a biorefinery, go on to describe how to categorize biorefineries, and finally review the literature on biorefinery process designs by listing the unit operation in each process design. Distinguishing biorefineries based on feedstock, the types of processing units, and the products emanating from the biorefinery are discussed.
Collapse
|
10
|
Qiu Z, Fang C, Gao Q, Bao J. A short-chain dehydrogenase plays a key role in cellulosic D-lactic acid fermentability of Pediococcus acidilactici. BIORESOURCE TECHNOLOGY 2020; 297:122473. [PMID: 31812596 DOI: 10.1016/j.biortech.2019.122473] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/16/2019] [Accepted: 11/18/2019] [Indexed: 05/26/2023]
Abstract
Phenolic aldehydes from lignocellulose pretreatment are strong inhibitors of cell growth and metabolism of cellulosic lactic acid bacteria. Their low solubility and recalcitrance highly reduce the removal efficiency of various detoxification methods. This study shows a simultaneous conversion of phenolic aldehydes and fermentation of D-lactic acid by Pediococcus acidilactici using corn stover feedstock. Vanillin was found to be the strongest phenolic aldehyde inhibitor to P. acidilactici. The overexpression of a short-chain dehydrogenase encoded by the gene CGS9114_RS09725 from Corynebacterium glutamicum was identified to play a key role in D-lactic acid fermentability of P. acidilactici. The engineered P. acidilactici with the genome integration of CGS9114_RS09725 showed the accelerated vanillin reduction and improved cellulosic D-lactic acid production. This study reveals that vanillin conversion is crucial for D-lactic acid fermentation, and the direct expression of a specific vanillin reduction gene in lactic acid bacterium efficiently improves cellulosic D-lactic acid production.
Collapse
Affiliation(s)
- Zhongyang Qiu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, 111 West Changjiang Road, Huaian 223300, Jiangsu, China
| | - Chun Fang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Qiuqiang Gao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jie Bao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| |
Collapse
|
11
|
Butyric Acid from Probiotic Staphylococcus epidermidis in the Skin Microbiome Down-Regulates the Ultraviolet-Induced Pro-Inflammatory IL-6 Cytokine via Short-Chain Fatty Acid Receptor. Int J Mol Sci 2019; 20:ijms20184477. [PMID: 31514281 PMCID: PMC6769796 DOI: 10.3390/ijms20184477] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/04/2019] [Accepted: 09/09/2019] [Indexed: 01/29/2023] Open
Abstract
The glycerol fermentation of probiotic Staphylococcus epidermidis (S. epidermidis) in the skin microbiome produced butyric acid in vitro at concentrations in the millimolar range. The exposure of dorsal skin of mice to ultraviolet B (UVB) light provoked a significant increased production of pro-inflammatory interleukin (IL)-6 cytokine. Topical application of butyric acid alone or S. epidermidis with glycerol remarkably ameliorated the UVB-induced IL-6 production. In vivo knockdown of short-chain fatty acid receptor 2 (FFAR2) in mouse skin considerably blocked the probiotic effect of S. epidermidis on suppression of UVB-induced IL-6 production. These results demonstrate that butyric acid in the metabolites of fermenting skin probiotic bacteria mediates FFAR2 to modulate the production of pro-inflammatory cytokines induced by UVB.
Collapse
|
12
|
Song CW, Park JM, Chung SC, Lee SY, Song H. Microbial production of 2,3-butanediol for industrial applications. J Ind Microbiol Biotechnol 2019; 46:1583-1601. [PMID: 31468234 DOI: 10.1007/s10295-019-02231-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 08/23/2019] [Indexed: 12/31/2022]
Abstract
2,3-Butanediol (2,3-BD) has great potential for diverse industries, including chemical, cosmetics, agriculture, and pharmaceutical areas. However, its industrial production and usage are limited by the fairly high cost of its petro-based production. Several bio-based 2,3-BD production processes have been developed and their economic advantages over petro-based production process have been reported. In particular, many 2,3-BD-producing microorganisms including bacteria and yeast have been isolated and metabolically engineered for efficient production of 2,3-BD. In addition, several fermentation processes have been tested using feedstocks such as starch, sugar, glycerol, and even lignocellulose as raw materials. Since separation and purification of 2,3-BD from fermentation broth account for the majority of its production cost, cost-effective processes have been simultaneously developed. The construction of a demonstration plant that can annually produce around 300 tons of 2,3-BD is scheduled to be mechanically completed in Korea in 2019. In this paper, core technologies for bio-based 2,3-BD production are reviewed and their potentials for use in the commercial sector are discussed.
Collapse
Affiliation(s)
- Chan Woo Song
- Research and Development Center, GS Caltex Corporation, Yuseong-gu, Daejeon, 34122, South Korea
| | - Jong Myoung Park
- Research and Development Center, GS Caltex Corporation, Yuseong-gu, Daejeon, 34122, South Korea
| | - Sang Chul Chung
- Research and Development Center, GS Caltex Corporation, Yuseong-gu, Daejeon, 34122, South Korea.,Department of Chemical and Biomolecular Engineering (BK21 Plus Program), BioProcess Engineering Research Center, Bioinformatics Research Center, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Sang Yup Lee
- Department of Chemical and Biomolecular Engineering (BK21 Plus Program), BioProcess Engineering Research Center, Bioinformatics Research Center, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea
| | - Hyohak Song
- Research and Development Center, GS Caltex Corporation, Yuseong-gu, Daejeon, 34122, South Korea.
| |
Collapse
|
13
|
Kumar M, Myagmardoloonjin B, Keshari S, Negari IP, Huang CM. 5-methyl Furfural Reduces the Production of Malodors by Inhibiting Sodium l-lactate Fermentation of Staphylococcus epidermidis: Implication for Deodorants Targeting the Fermenting Skin Microbiome. Microorganisms 2019; 7:E239. [PMID: 31387211 PMCID: PMC6723266 DOI: 10.3390/microorganisms7080239] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/21/2019] [Accepted: 08/01/2019] [Indexed: 11/16/2022] Open
Abstract
Staphylococcus epidermidis (S. epidermidis) is a common bacterial colonizer on the surface of human skin. Lactate is a natural constituent of skin. Here, we reveal that S. epidermidis used sodium l-lactate as a carbon source to undergo fermentation and yield malodors detected by gas colorimetric tubes. Several furan compounds such as furfural originating from the fermentation metabolites play a role in the negative feedback regulation of the fermentation process. The 5-methyl furfural (5MF), a furfural analog, was selected as an inhibitor of sodium l-lactate fermentation of S. epidermidis via inhibition of acetolactate synthase (ALS). S. epidermidis treated with 5MF lost its ability to produce malodors, demonstrating the feasibility of using 5MF as an ingredient in deodorants targeting malodor-causing bacteria in the skin microbiome.
Collapse
Affiliation(s)
- Manish Kumar
- Department of Biomedical Sciences and Engineering, National Central University, Taoyuan 320009, Taiwan
| | | | - Sunita Keshari
- Department of Life Sciences, National Central University, Taoyuan 320009, Taiwan
| | - Indira Putri Negari
- Department of Biomedical Sciences and Engineering, National Central University, Taoyuan 320009, Taiwan
| | - Chun-Ming Huang
- Department of Biomedical Sciences and Engineering, National Central University, Taoyuan 320009, Taiwan.
- Department of Life Sciences, National Central University, Taoyuan 320009, Taiwan.
- Department of Dermatology, School of Medicine, University of California, San Diego, CA 92093, USA.
| |
Collapse
|
14
|
Godan TK, Rajesh RO, Loreni PC, Kumar Rai A, Sahoo D, Pandey A, Binod P. Biotransformation of 5-hydroxymethylfurfural by Acinetobacter oleivorans S27 for the synthesis of furan derivatives. BIORESOURCE TECHNOLOGY 2019; 282:88-93. [PMID: 30852336 DOI: 10.1016/j.biortech.2019.02.125] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/26/2019] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Abstract
Hydroxymethylfurfural (HMF) is an industrially important chemical which is a starting material in the production of plenty of platform chemicals. In this study, a complete biotransformation of HMF was achieved using a novel isolate, Acinetobacter oleivorans S27. This strain could tolerate up to 3000 mg/L of HMF concentration and convert to other furan derivatives. The conversion products includes high-value chemicals like 5-hydroxymethyl-2-furancarboxylic acid (HMFCA), a known interleukin inhibitor and 2,5-furan dicarboxylic acid (FDCA), an alternate of terephthalic acid in polyester industries. The biotransformation efficiency was found to be 100%, as there is complete conversion of HMF to other chemicals. Most importantly, it is an environmental friendly process for the production of furan derivatives.
Collapse
Affiliation(s)
- Tharangattumana Krishnan Godan
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India
| | - R O Rajesh
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India
| | - Phukon C Loreni
- Institute of Bioresources and Sustainable Development, Sikkim Centre, Tadong - 737102, Gangtok, Sikkim, India
| | - Amit Kumar Rai
- Institute of Bioresources and Sustainable Development, Sikkim Centre, Tadong - 737102, Gangtok, Sikkim, India
| | - Dinabandhu Sahoo
- Institute of Bioresources and Sustainable Development, Sikkim Centre, Tadong - 737102, Gangtok, Sikkim, India
| | - Ashok Pandey
- CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 31 MG Marg, Lucknow 226 001, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India.
| |
Collapse
|
15
|
Zhou P, Khushk I, Gao Q, Bao J. Tolerance and transcriptional analysis of Corynebacterium glutamicum on biotransformation of toxic furaldehyde and benzaldehyde inhibitory compounds. J Ind Microbiol Biotechnol 2019; 46:951-963. [PMID: 30972584 DOI: 10.1007/s10295-019-02171-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 04/01/2019] [Indexed: 11/26/2022]
Abstract
Furaldehydes and benzaldehydes are among the most toxic inhibitors from lignocellulose pretreatment on microbial growth and metabolism. The bioconversion of aldehyde inhibitors into less toxic alcohols or acids (biotransformation) is the prerequisite condition for efficient biorefinery fermentations. This study found that Corynebacterium glutamicum S9114 demonstrated excellent tolerance and biotransformation capacity to five typical aldehyde inhibitors including two furaldehydes: 2-furaldehyde (furfural), 5-(hydroxymethyl)-2-furaldehyde, and three benzaldehydes: 4-hydroxybenzaldehyde, 4-hydroxy-3-methoxybenzaldehyde (vanillin), and 4-hydroxy-3,5-dimethoxybenzaldehyde (syringaldehyde). Transcription levels of 93 genes hypothesized to be responsible for five aldehydes biotransformation were examined by qRT-PCR. Multiple genes showed significantly up-regulated expression against furaldehydes or benzaldehydes. Overexpression of CGS9114_RS01115 in C. glutamicum resulted in the increased conversion of all five aldehyde inhibitors. The significant oxidoreductase genes responsible for each or multiple inhibitors biotransformation identified in this study will serve as a component of key gene device library for robust biorefinery fermentation strains development in the future biorefinery applications.
Collapse
Affiliation(s)
- Pingping Zhou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Imrana Khushk
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Qiuqiang Gao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jie Bao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| |
Collapse
|
16
|
Nguyen DTT, Praveen P, Loh KC. Zymomonas mobilis immobilization in polymeric membranes for improved resistance to lignocellulose-derived inhibitors in bioethanol fermentation. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
17
|
Li Y, Zhang Y, Zhao J, Han N, Bian L. Studies on the Adsorption and Thermodynamics of Theophylline, Vitamin C and Bovine Serum Albumin on Microporous Corn Starch. STARCH-STARKE 2018. [DOI: 10.1002/star.201800042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuhua Li
- College of Life Science; Northwest University; Xi'an 710069 China
| | - Yeli Zhang
- College of Life Science; Northwest University; Xi'an 710069 China
| | - Juan Zhao
- College of Life Science; Northwest University; Xi'an 710069 China
| | - Ning Han
- Department of Inspection; Weinan Psychiatric Hospital; Weinan 714000 China
| | - Liujiao Bian
- College of Life Science; Northwest University; Xi'an 710069 China
| |
Collapse
|
18
|
Enhanced enzymatic hydrolysis of wheat straw by two-step pretreatment combining alkalization and adsorption. Appl Microbiol Biotechnol 2018; 102:9831-9842. [DOI: 10.1007/s00253-018-9335-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/12/2018] [Accepted: 08/16/2018] [Indexed: 12/31/2022]
|
19
|
Hama S, Kihara M, Noda H, Kondo A. Development of cell recycle technology incorporating nutrient supplementation for lignocellulosic ethanol fermentation using industrial yeast Saccharomyces cerevisiae. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.05.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
20
|
Singh P, Pandit S, Garnæs J, Tunjic S, Mokkapati VR, Sultan A, Thygesen A, Mackevica A, Mateiu RV, Daugaard AE, Baun A, Mijakovic I. Green synthesis of gold and silver nanoparticles from Cannabis sativa (industrial hemp) and their capacity for biofilm inhibition. Int J Nanomedicine 2018; 13:3571-3591. [PMID: 29950836 PMCID: PMC6016601 DOI: 10.2147/ijn.s157958] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background Cannabis sativa (hemp) is a source of various biologically active compounds, for instance, cannabinoids, terpenes and phenolic compounds, which exhibit antibacterial, antifungal, anti-inflammatory and anticancer properties. With the purpose of expanding the auxiliary application of C. sativa in the field of bio-nanotechnology, we explored the plant for green and efficient synthesis of gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs). Methods and results The nanoparticles were synthesized by utilizing an aqueous extract of C. sativa stem separated into two different fractions (cortex and core [xylem part]) without any additional reducing, stabilizing and capping agents. In the synthesis of AuNPs using the cortex enriched in bast fibers, fiber-AuNPs (F-AuNPs) were achieved. When using the core part of the stem, which is enriched with phenolic compounds such as alkaloids and cannabinoids, core-AuNPs (C-AuNPs) and core-AgNPs (C-AgNPs) were formed. Synthesized nanoparticles were character-ized by UV–visible analysis, transmission electron microscopy, atomic force microscopy, dynamic light scattering, Fourier transform infrared, and matrix-assisted laser desorption/ionization time-of-flight. In addition, the stable nature of nanoparticles has been shown by thermogravimetric analysis and inductively coupled plasma mass spectrometry (ICP-MS). Finally, the AgNPs were explored for the inhibition of Pseudomonas aeruginosa and Escherichia coli biofilms. Conclusion The synthesized nanoparticles were crystalline with an average diameter between 12 and 18 nm for F-AuNPs and C-AuNPs and in the range of 20–40 nm for C-AgNPs. ICP-MS analysis revealed concentrations of synthesized nanoparticles as 0.7, 4.5 and 3.6 mg/mL for F-AuNPs, C-AuNPs and C-AgNPs, respectively. Fourier transform infrared spectroscopy revealed the presence of flavonoids, cannabinoids, terpenes and phenols on the nanoparticle surface, which could be responsible for reducing the salts to nanoparticles and further stabilizing them. In addition, the stable nature of synthesized nanoparticles has been shown by thermogravimetric analysis and ICP-MS. Finally, the AgNPs were explored for the inhibition of P. aeruginosa and E. coli biofilms. The nanoparticles exhibited minimum inhibitory concentration values of 6.25 and 5 µg/mL and minimum bactericidal concentration values of 12.5 and 25 µg/mL against P. aeruginosa and E. coli, respectively.
Collapse
Affiliation(s)
- Priyanka Singh
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Santosh Pandit
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Jørgen Garnæs
- Danish Institute of Fundamental Metrology, Lyngby, Denmark
| | - Sanja Tunjic
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Venkata Rss Mokkapati
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Abida Sultan
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Anders Thygesen
- Center for Bioprocess Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Aiga Mackevica
- Department of Environmental Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Ramona Valentina Mateiu
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Anders Egede Daugaard
- Danish Polymer Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Anders Baun
- Department of Environmental Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Ivan Mijakovic
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark.,Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| |
Collapse
|
21
|
Islam SMM, Elliott JR, Ju LK. Minimization of fermentation inhibitor generation by carbon dioxide-water based pretreatment and enzyme hydrolysis of guayule biomass. BIORESOURCE TECHNOLOGY 2018; 251:84-92. [PMID: 29272772 DOI: 10.1016/j.biortech.2017.12.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 06/07/2023]
Abstract
Guayule rubber production leaves >80% biomass as ground bagasse, which can be hydrolyzed to release sugars but also fermentation inhibitors. Here inhibitor generation and sugar conversion by the CO2-H2O pretreatment and enzyme hydrolysis were studied. Different pretreatment conditions: 550-4900 psi, 160-195 °C, 10-60 min and fixed 66.7% water, generated widely varying amounts of inhibitors (per dry-bagasse mass): 0.014-0.252% hydroxymethylfurfural, 0.012-0.794% furfural and 0.17-8.02% acetic acid. The condition (195 °C/3400 psi/30 min) giving highest reducing sugar (86.9 ± 1.5%) and cellulose (99.2 ± 1.3%) conversions generated more inhibitors. Kluyveromyces marxianus fermentation showed complete growth and ethanol production inhibition at ≥14 g/L combined inhibitors. Considering both sugars and inhibitors, the optimum condition was 180 °C, 1800 psi and 30 min, enabling 82.8 ± 2.8% reducing sugar, 74.8 ± 4.8% cellulose and 88.5 ± 6.9% hemicellulose conversions with low levels of hydroxymethylfurfural (0.07%), furfural (0.25%) and acetic acid (3.0%). The optimized CO2-H2O pretreatment gave much lower inhibitor formation and higher sugar conversion than other pretreatment methods.
Collapse
Affiliation(s)
- S M Mahfuzul Islam
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325-3906, USA
| | - J Richard Elliott
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325-3906, USA
| | - Lu-Kwang Ju
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325-3906, USA.
| |
Collapse
|
22
|
De La Torre M, Martín-Sampedro R, Fillat Ú, Eugenio ME, Blánquez A, Hernández M, Arias ME, Ibarra D. Comparison of the efficiency of bacterial and fungal laccases in delignification and detoxification of steam-pretreated lignocellulosic biomass for bioethanol production. ACTA ACUST UNITED AC 2017; 44:1561-1573. [DOI: 10.1007/s10295-017-1977-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 09/05/2017] [Indexed: 11/30/2022]
Abstract
Abstract
This study evaluates the potential of a bacterial laccase from Streptomyces ipomoeae (SilA) for delignification and detoxification of steam-exploded wheat straw, in comparison with a commercial fungal laccase from Trametes villosa. When alkali extraction followed by SilA laccase treatment was applied to the water insoluble solids fraction, a slight reduction in lignin content was detected, and after a saccharification step, an increase in both glucose and xylose production (16 and 6%, respectively) was observed. These effects were not produced with T. villosa laccase. Concerning to the fermentation process, the treatment of the steam-exploded whole slurry with both laccases produced a decrease in the phenol content by up to 35 and 71% with bacterial and fungal laccases, respectively. The phenols reduction resulted in an improved performance of Saccharomyces cerevisiae during a simultaneous saccharification and fermentation (SSF) process, improving ethanol production rate. This enhancement was more marked with a presaccharification step prior to the SSF process.
Collapse
Affiliation(s)
- María De La Torre
- 0000 0004 1937 0239 grid.7159.a Departamento de Biomedicina y Biotecnología Universidad de Alcalá Autovía A-2, Km 33.600 28805 Alcalá De Henares Madrid Spain
| | | | - Úrsula Fillat
- Forestry Products Department INIA-CIFOR Ctra. de La Coruña Km 7.5 28040 Madrid Spain
| | - María E Eugenio
- Forestry Products Department INIA-CIFOR Ctra. de La Coruña Km 7.5 28040 Madrid Spain
| | - Alba Blánquez
- 0000 0004 1937 0239 grid.7159.a Departamento de Biomedicina y Biotecnología Universidad de Alcalá Autovía A-2, Km 33.600 28805 Alcalá De Henares Madrid Spain
| | - Manuel Hernández
- 0000 0004 1937 0239 grid.7159.a Departamento de Biomedicina y Biotecnología Universidad de Alcalá Autovía A-2, Km 33.600 28805 Alcalá De Henares Madrid Spain
| | - María E Arias
- 0000 0004 1937 0239 grid.7159.a Departamento de Biomedicina y Biotecnología Universidad de Alcalá Autovía A-2, Km 33.600 28805 Alcalá De Henares Madrid Spain
| | - David Ibarra
- Forestry Products Department INIA-CIFOR Ctra. de La Coruña Km 7.5 28040 Madrid Spain
| |
Collapse
|
23
|
Laccases as a Potential Tool for the Efficient Conversion of Lignocellulosic Biomass: A Review. FERMENTATION-BASEL 2017. [DOI: 10.3390/fermentation3020017] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
24
|
Caffeic acid production by simultaneous saccharification and fermentation of kraft pulp using recombinant Escherichia coli. Appl Microbiol Biotechnol 2017; 101:5279-5290. [PMID: 28396925 DOI: 10.1007/s00253-017-8270-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/22/2017] [Accepted: 03/27/2017] [Indexed: 10/19/2022]
Abstract
Caffeic acid (3,4-dihydroxycinnamic acid) serves as a building block for thermoplastics and a precursor for biologically active compounds and was recently produced from glucose by microbial fermentation. To produce caffeic acid from inedible cellulose, separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF) reactions were compared using kraft pulp as lignocellulosic feedstock. Here, a tyrosine-overproducing Escherichia coli strain was metabolically engineered to produce caffeic acid from glucose by introducing the genes encoding a 4-hydroxyphenyllactate 3-hydroxylase (hpaBC) from Pseudomonas aeruginosa and tyrosine ammonia lyase (fevV) from Streptomyces sp. WK-5344. Using the resulting recombinant strain, the maximum yield of caffeic acid in SSF (233 mg/L) far exceeded that by SHF (37.9 mg/L). In the SSF with low cellulase loads (≤2.5 filter paper unit/g glucan), caffeic acid production was markedly increased, while almost no glucose accumulation was detected, indicating that the E. coli cells experienced glucose limitation in this culture condition. Caffeic acid yield was also negatively correlated with the glucose concentration in the fermentation medium. In SHF, the formation of by-product acetate and the accumulation of potential fermentation inhibitors increased significantly with kraft pulp hydrolysate than filter paper hydrolysate. The combination of these inhibitors had synergistic effects on caffeic acid fermentation at low concentrations. With lower loads of cellulase in SSF, less potential fermentation inhibitors (furfural, 5-hydroxymethyfurfural, and 4-hydroxylbenzoic acid) accumulated in the medium. These observations suggest that glucose limitation in SSF is crucial for improving caffeic acid yield, owing to reduced by-product formation and fermentation inhibitor accumulation.
Collapse
|
25
|
Liu T, Li Z. An electrogenerated base for the alkaline oxidative pretreatment of lignocellulosic biomass to produce bioethanol. RSC Adv 2017. [DOI: 10.1039/c7ra08101d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Electrogenerated base (EGB), an alternative source for alkaline pretreatment, can achieve the same performance as NaOH.
Collapse
Affiliation(s)
- Tongjun Liu
- Department of Bioengineering
- Qilu University of Technology
- Jinan
- China
| | - Zhenglong Li
- Department of Chemical Engineering and Materials Science
- Michigan State University
- East Lansing
- USA
- Department of Biosystems and Agricultural Engineering
| |
Collapse
|
26
|
Strategies for efficient and economical 2,3-butanediol production: new trends in this field. World J Microbiol Biotechnol 2016; 32:200. [DOI: 10.1007/s11274-016-2161-x] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 10/16/2016] [Indexed: 01/06/2023]
|
27
|
Coz A, Llano T, Cifrián E, Viguri J, Maican E, Sixta H. Physico-Chemical Alternatives in Lignocellulosic Materials in Relation to the Kind of Component for Fermenting Purposes. MATERIALS 2016; 9:ma9070574. [PMID: 28773700 PMCID: PMC5456911 DOI: 10.3390/ma9070574] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/04/2016] [Accepted: 07/08/2016] [Indexed: 11/16/2022]
Abstract
The complete bioconversion of the carbohydrate fraction is of great importance for a lignocellulosic-based biorefinery. However, due to the structure of the lignocellulosic materials, and depending basically on the main parameters within the pretreatment steps, numerous byproducts are generated and they act as inhibitors in the fermentation operations. In this sense, the impact of inhibitory compounds derived from lignocellulosic materials is one of the major challenges for a sustainable biomass-to-biofuel and -bioproduct industry. In order to minimise the negative effects of these compounds, numerous methodologies have been tested including physical, chemical, and biological processes. The main physical and chemical treatments have been studied in this work in relation to the lignocellulosic material and the inhibitor in order to point out the best mechanisms for fermenting purposes. In addition, special attention has been made in the case of lignocellulosic hydrolysates obtained by chemical processes with SO₂, due to the complex matrix of these materials and the increase in these methodologies in future biorefinery markets. Recommendations of different detoxification methods have been given.
Collapse
Affiliation(s)
- Alberto Coz
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Tamara Llano
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Eva Cifrián
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Javier Viguri
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Edmond Maican
- Faculty of Biotechnical Systems Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, Sector 6, Bucuresti 060042, Romania.
| | - Herbert Sixta
- Department of Forest Products Technology, School of Chemistry, Aalto University, P.O. Box 16300, Aalto FI-00076, Finland.
| |
Collapse
|
28
|
Kim HS, Oh YH, Jang YA, Kang KH, David Y, Yu JH, Song BK, Choi JI, Chang YK, Joo JC, Park SJ. Recombinant Ralstonia eutropha engineered to utilize xylose and its use for the production of poly(3-hydroxybutyrate) from sunflower stalk hydrolysate solution. Microb Cell Fact 2016; 15:95. [PMID: 27260327 PMCID: PMC4893272 DOI: 10.1186/s12934-016-0495-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 05/23/2016] [Indexed: 11/17/2022] Open
Abstract
Background Lignocellulosic raw materials have extensively been examined for the production of bio-based fuels, chemicals, and polymers using microbial platforms. Since xylose is one of the major components of the hydrolyzed lignocelluloses, it is being considered a promising substrate in lignocelluloses based fermentation process. Ralstonia eutropha, one of the most powerful and natural producers of polyhydroxyalkanoates (PHAs), has extensively been examined for the production of bio-based chemicals, fuels, and polymers. However, to the best of our knowledge, lignocellulosic feedstock has not been employed for R. eutropha probably due to its narrow spectrum of substrate utilization. Thus, R. eutropha engineered to utilize xylose should be useful in the development of microbial process for bio-based products from lignocellulosic feedstock. Results Recombinant R. eutropha NCIMB11599 expressing the E. coli xylAB genes encoding xylose isomerase and xylulokinase respectively, was constructed and examined for the synthesis of poly(3-hydroxybutyrate) [P(3HB)] using xylose as a sole carbon source. It could produce 2.31 g/L of P(3HB) with a P(3HB) content of 30.95 wt% when it was cultured in a nitrogen limited chemically defined medium containing 20.18 g/L of xylose in a batch fermentation. Also, recombinant R. eutropha NCIMB11599 expressing the E. coli xylAB genes produced 5.71 g/L of P(3HB) with a P(3HB) content of 78.11 wt% from a mixture of 10.05 g/L of glucose and 10.91 g/L of xylose in the same culture condition. The P(3HB) concentration and content could be increased to 8.79 g/L and 88.69 wt%, respectively, when it was cultured in the medium containing 16.74 g/L of glucose and 6.15 g/L of xylose. Further examination of recombinant R. eutropha NCIMB11599 expressing the E. coli xylAB genes by fed-batch fermentation resulted in the production of 33.70 g/L of P(3HB) in 108 h with a P(3HB) content of 79.02 wt%. The concentration of xylose could be maintained as high as 6 g/L, which is similar to the initial concentration of xylose during the fed-batch fermentation suggesting that xylose consumption is not inhibited during fermentation. Finally, recombinant R. eutorpha NCIMB11599 expressing the E. coli xylAB gene was examined for the production of P(3HB) from the hydrolysate solution of sunflower stalk. The hydrolysate solution of sunflower stalk was prepared as a model lignocellulosic biomass, which contains 78.8 g/L of glucose, 26.9 g/L of xylose, and small amount of 4.8 g/L of galactose and mannose. When recombinant R. eutropha NCIMB11599 expressing the E. coli xylAB genes was cultured in a nitrogen limited chemically defined medium containing 23.1 g/L of hydrolysate solution of sunflower stalk, which corresponds to 16.8 g/L of glucose and 5.9 g/L of xylose, it completely consumed glucose and xylose in the sunflower stalk based medium resulting in the production of 7.86 g/L of P(3HB) with a P(3HB) content of 72.53 wt%. Conclusions Ralstonia eutropha was successfully engineered to utilize xylose as a sole carbon source as well as to co-utilize it in the presence of glucose for the synthesis of P(3HB). In addition, R. eutropha engineered to utilized xylose could synthesize P(3HB) from the sunflower stalk hydrolysate solution containing glucose and xylose as major sugars, which suggests that xylose utilizing R. eutropha developed in this study should be useful for development of lignocellulose based microbial processes.
Collapse
Affiliation(s)
- Hee Su Kim
- Department of Chemical and Biomolecular Engineering (BK21 Plus Program), KAIST, 335 Gwahagno, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Young Hoon Oh
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Young-Ah Jang
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Kyoung Hee Kang
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Yokimiko David
- Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido, 17058, Republic of Korea
| | - Ju Hyun Yu
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Bong Keun Song
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea
| | - Jong-il Choi
- Department of Biotechnology and Bioengineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Yong Keun Chang
- Department of Chemical and Biomolecular Engineering (BK21 Plus Program), KAIST, 335 Gwahagno, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jeong Chan Joo
- Center for Bio-based Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34602, Republic of Korea.
| | - Si Jae Park
- Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido, 17058, Republic of Korea.
| |
Collapse
|
29
|
A Bacterial Laccase for Enhancing Saccharification and Ethanol Fermentation of Steam-Pretreated Biomass. FERMENTATION-BASEL 2016. [DOI: 10.3390/fermentation2020011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
30
|
Kuo YC, Yuan SF, Wang CA, Huang YJ, Guo GL, Hwang WS. Production of optically pure L-lactic acid from lignocellulosic hydrolysate by using a newly isolated and D-lactate dehydrogenase gene-deficient Lactobacillus paracasei strain. BIORESOURCE TECHNOLOGY 2015; 198:651-7. [PMID: 26433790 DOI: 10.1016/j.biortech.2015.09.071] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 09/17/2015] [Accepted: 09/20/2015] [Indexed: 05/14/2023]
Abstract
The use of lignocellulosic feedstock for lactic acid production with a difficulty is that the release of inhibitory compounds during the pretreatment process which inhibit the growth of microorganism. Thus we report a novel lactic acid bacterium, Lactobacillus paracasei 7 BL, that has a high tolerance to inhibitors and produced optically pure l-lactic acid after the interruption of ldhD gene. The strain 7 BL fermented glucose efficiently and showed high titer of l-lactic acid (215 g/l) by fed-batch strategy. In addition, 99 g/l of l-lactic acid with high yield (0.96 g/g) and productivity (2.25-3.23 g/l/h) was obtained by using non-detoxified wood hydrolysate. Rice straw hydrolysate without detoxification was also tested and yielded a productivity rate as high as 5.27 g/l/h. Therefore, L. paracasei 7 BL represents a potential method of l-lactic acid production from lignocellulosic biomass and has attractive application for industries.
Collapse
Affiliation(s)
- Yang-Cheng Kuo
- Chemical Division, Institute of Nuclear Energy Research, Taoyuan, Taiwan, ROC
| | - Shuo-Fu Yuan
- Chemical Division, Institute of Nuclear Energy Research, Taoyuan, Taiwan, ROC
| | - Chun-An Wang
- Chemical Division, Institute of Nuclear Energy Research, Taoyuan, Taiwan, ROC
| | - Yin-Jung Huang
- Chemical Division, Institute of Nuclear Energy Research, Taoyuan, Taiwan, ROC
| | - Gia-Luen Guo
- Chemical Division, Institute of Nuclear Energy Research, Taoyuan, Taiwan, ROC.
| | - Wen-Song Hwang
- Chemical Division, Institute of Nuclear Energy Research, Taoyuan, Taiwan, ROC
| |
Collapse
|
31
|
Agudelo RA, García-Aparicio MP, Görgens JF. Steam explosion pretreatment of triticale (× Triticosecale Wittmack) straw for sugar production. N Biotechnol 2015; 33:153-63. [PMID: 26477303 DOI: 10.1016/j.nbt.2015.10.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 10/08/2015] [Accepted: 10/08/2015] [Indexed: 11/17/2022]
Abstract
Triticale, a non-food based, low-cost and well-adapted crop in marginal lands has been considered as a potential 1G and 2G feedstock for bio-ethanol production. In this work, triticale straw was evaluated as a source of fermentable sugars by combination of uncatalyzed steam explosion and enzymatic hydrolysis. Pretreatment conditions with severities from 3.05 to 4.12 were compared in order to identify conditions that favour the recovery of hemicellulose-derived sugars, cellulose digestibility or the combined sugars yield (CSY) from the pretreatment-enzymatic hydrolysis. Xylose oligosaccharide was the major sugar in hydrolysates from all pretreatment conditions. Maximum hemicellulose-sugars recovery (52% of the feedstock content) was obtained at 200 °C and 5 min. The highest cellulose digestibility (95%) was found at 200 °C - 15 min, although glucose recovery from hydrolysis was maximised at 200 °C - 10 min (digestibility >92%) due to higher mass yield of pretreated solids. The maximum CSY (nearly 77% of theoretical content) was obtained at 200 °C - 5 min. Sugar loss after pretreatment was observed to higher extent at harsher severities. However, the concentrations of sugar degradation products and acetic acid were at levels below tolerance limits of the downstream biological conversions. Steam explosion pretreatment without acid impregnation is a good technology for production of fermentable sugars from triticale straw. This work provides foundation for future autohydrolysis steam explosion optimization studies to enhanced sugars recovery and digestibility of triticale straw.
Collapse
Affiliation(s)
- Roberto A Agudelo
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - María P García-Aparicio
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa; Department of Microbiology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
| | - Johann F Görgens
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| |
Collapse
|
32
|
Recent advances in development of biomass pretreatment technologies used in biorefinery for the production of bio-based fuels, chemicals and polymers. KOREAN J CHEM ENG 2015. [DOI: 10.1007/s11814-015-0191-y] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
33
|
Zhu MQ, Wen JL, Su YQ, Wei Q, Sun RC. Effect of structural changes of lignin during the autohydrolysis and organosolv pretreatment on Eucommia ulmoides Oliver for an effective enzymatic hydrolysis. BIORESOURCE TECHNOLOGY 2015; 185:378-85. [PMID: 25754353 DOI: 10.1016/j.biortech.2015.02.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 02/12/2015] [Accepted: 02/13/2015] [Indexed: 05/16/2023]
Abstract
Eucommia ulmoides Oliver (EU) wood was successively treated by autohydrolysis and organosolv pretreatment integrated process. Autohydrolysis pretreatment facilitated xylooligosaccharides production, subsequent organosolv pretreatment to obtain high-purity lignin and digestible cellulose-rich residue. Results showed that the lignin fractions obtained exhibited smaller molecular weights, narrow polydispersity, more phenolic OH groups and higher syringyl/guaiacyl ratios (S/G) than the milled wood lignin. NMR characterization of the lignin revealed that the β-O-4 linkages significantly cleaved and the structure of stilbene formed, but its resinol (β-β) was resistant to be degraded by organosolv delignification. Moreover, the glucose yield of the integrated residue achieved a maximum value of 89.3% after enzyme hydrolysis, separately about 1.0, 1.3, 3.8 times as compared to that of the ethanol organosolv residue, the hydrothermally treated residue and the EU wood, respectively, which indicated that the integrated process was a promising approach to value-added utilization of the EU wood.
Collapse
Affiliation(s)
- Ming-Qiang Zhu
- College of Forestry, Northwest A&F University, Yangling 712100, China; Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Jia-Long Wen
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| | - Yin-Quan Su
- College of Forestry, Northwest A&F University, Yangling 712100, China
| | - Qin Wei
- College of Forestry, Northwest A&F University, Yangling 712100, China.
| | - Run-Cang Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
| |
Collapse
|
34
|
Gu H, Zhang J, Bao J. High tolerance and physiological mechanism of Zymomonas mobilis to phenolic inhibitors in ethanol fermentation of corncob residue. Biotechnol Bioeng 2015; 112:1770-82. [PMID: 25851269 DOI: 10.1002/bit.25603] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 11/06/2022]
Abstract
Corncob residue as the lignocellulosic biomass accumulated phenolic compounds generated from xylitol production industry. For utilization of this biomass, Zymomonas mobilis ZM4 was tested as the ethanol fermenting strain and presented a better performance of cell growth (2.8 × 10(8) CFU/mL) and ethanol fermentability (54.42 g/L) in the simultaneous saccharification and fermentation (SSF) than the typical robust strain Saccharomyces cerevisiae DQ1 (cell growth of 2.9 × 10(7) CFU/mL, ethanol titer of 48.6 g/L). The physiological response of Z. mobilis ZM4 to the twelve typical phenolic compounds derived from lignocellulose was assayed and compared with that of S. cerevisiae DQ1. Z. mobilis ZM4 showed nearly the same tolerance to the phenolic aldehydes with S. cerevisiae DQ1, but the stronger tolerance to the phenolic acids existing in corncob residue (2-furoic acid, p-hydroxybenzoic acid, p-coumaric acid, vanillic acid, ferulic acid, and syringic acid). The tolerance mechanism of Z. mobilis was investigated in terms of inhibitor degradation, cell morphology and membrane permeability under the stress of phenolics using GC-MS, scanning and transmission electron microscopies (SEM and TEM), as well as fluorescent probes. The results reveal that Z. mobilis ZM4 has the capability for in situ detoxification of phenolic aldehydes, and the lipopolysaccharide aggregation on the cell outer membrane of Z. mobilis ZM4 provided the permeable barrier to the attack of phenolic acids.
Collapse
Affiliation(s)
- Hanqi Gu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jian Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jie Bao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
| |
Collapse
|
35
|
Acetate is a superior substrate for microbial fuel cell initiation preceding bioethanol effluent utilization. Appl Microbiol Biotechnol 2015; 99:4905-15. [DOI: 10.1007/s00253-015-6513-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 02/25/2015] [Accepted: 02/25/2015] [Indexed: 01/24/2023]
|
36
|
Liu W, Zhao C, Jiang J, Lu Q, Hao Y, Wang L, Liu C. Bioflocculant production from untreated corn stover using Cellulosimicrobium cellulans L804 isolate and its application to harvesting microalgae. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:170. [PMID: 26500696 PMCID: PMC4617488 DOI: 10.1186/s13068-015-0354-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 10/05/2015] [Indexed: 05/12/2023]
Abstract
BACKGROUND Microalgae are widely studied for biofuel production. Nevertheless, harvesting step of biomass is still a critical challenge. Bioflocculants have been applied in numerous applications including the low-cost harvest of microalgae. A major bottleneck for commercial application of bioflocculant is its high production cost. Lignocellulosic substrates are abundantly available. Hence, the hydrolyzates of rice stover and corn stover have been used as carbon source to produce the bioflocculant in previous studies. However, the hydrolyzates of biomass required the neutralization of pH before the downstream fermentation processes, and the toxic by-products produced during hydrolysis process inhibited the microbial activities in the subsequent fermentation processes and contaminated the bioflocculant product. Therefore, strains that can secrete plant cell-wall-degrading enzymes and simultaneously produce bioflocculants through directly degrading the lignocellulosic biomasses are of academic and practical interests. RESULTS A lignocellulose-degrading strain Cellulosimicrobium cellulans L804 was isolated in this study, which can produce the bioflocculant MBF-L804 using untreated biomasses, such as corn stover, corn cob, potato residues, and peanut shell. The effects of culture conditions including initial pH, carbon source, and nitrogen source on MBF-L804 production were analyzed. The results showed that over 80 % flocculating activity was achieved when the corn stover, corn cob, potato residues, and peanut shell were used as carbon sources and 4.75 g/L of MBF-L804 was achieved under the optimized condition: 20 g/L dry corn stover as carbon source, 3 g/L yeast extract as nitrogen source, pH 8.2. The bioflocculant MBF-L804 contained 68.6 % polysaccharides and 28.0 % proteins. The Gel permeation chromatography analysis indicated that the approximate molecular weight (MW) of MBF-L804 was 229 kDa. The feasibility of harvesting microalgae Chlamydomonas reinhardtii and Chlorella minutissima using MBF-L804 was evaluated. The highest flocculating efficiencies for C. reinhardtii and C. minutissima were 99.04 and 93.83 %, respectively. CONCLUSIONS This study shows for the first time that C. cellulans L804 can directly convert corn stover, corn cob, potato residues and peanut shell into the bioflocculants, which can be used to effectively harvest microalgae.
Collapse
Affiliation(s)
- Weijie Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No.101, Shanghai Road, Tongshan new District, Xuzhou, 221116 Jiangsu China
| | - Chenchu Zhao
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No.101, Shanghai Road, Tongshan new District, Xuzhou, 221116 Jiangsu China
| | - Jihong Jiang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No.101, Shanghai Road, Tongshan new District, Xuzhou, 221116 Jiangsu China
| | - Qian Lu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No.101, Shanghai Road, Tongshan new District, Xuzhou, 221116 Jiangsu China
| | - Yan Hao
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No.101, Shanghai Road, Tongshan new District, Xuzhou, 221116 Jiangsu China
| | - Liang Wang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No.101, Shanghai Road, Tongshan new District, Xuzhou, 221116 Jiangsu China
| | - Cong Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No.101, Shanghai Road, Tongshan new District, Xuzhou, 221116 Jiangsu China
| |
Collapse
|
37
|
Thomsen ST, Londoño JEG, Schmidt JE, Kádár Z. Comparison of Different Pretreatment Strategies for Ethanol Production of West African Biomass. Appl Biochem Biotechnol 2014; 175:2589-601. [DOI: 10.1007/s12010-014-1444-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 12/08/2014] [Indexed: 11/28/2022]
|
38
|
Kawaguchi H, Uematsu K, Ogino C, Teramura H, Niimi-Nakamura S, Tsuge Y, Hasunuma T, Oinuma KI, Takaya N, Kondo A. Simultaneous saccharification and fermentation of kraft pulp by recombinant Escherichia coli for phenyllactic acid production. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2014.04.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
39
|
Gu H, Zhang J, Bao J. Inhibitor analysis and adaptive evolution of Saccharomyces cerevisiae for simultaneous saccharification and ethanol fermentation from industrial waste corncob residues. BIORESOURCE TECHNOLOGY 2014; 157:6-13. [PMID: 24518544 DOI: 10.1016/j.biortech.2014.01.060] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/12/2014] [Accepted: 01/15/2014] [Indexed: 05/23/2023]
Abstract
Industrial waste corncob residues (CCR) are rich in cellulose and can be hydrolyzed directly without pretreatment. However, a poor fermentation performance was frequently observed in the simultaneous saccharification and ethanol fermentation (SSF) of CCR, although the furans and organic acid inhibitors were very low. In this study, the high level of water-insoluble phenolic compounds such as 2-furoic acid, ferulic acid, p-coumaric acid, guaiacol, and p-hydroxybenzoic acid were detected in CCR and inhibited the growth and metabolism of Saccharomyces cerevisiae DQ1. An evolutionary adaptation strategy was developed by culturing the S. cerevisiae DQ1 strain in a series of media with the gradual increase of CCR hydrolysate. The high ethanol concentration (62.68g/L) and the yield (55.7%) were achieved in the SSF of CCR using the adapted S. cerevisiae DQ1. The results provided a practical method for improving performance of simultaneous saccharification and ethanol production from CCR.
Collapse
Affiliation(s)
- Hanqi Gu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jian Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jie Bao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; State Key Laboratory of Motor Vehicle Biofuel Technology, Nanyang, Henan 473000, China.
| |
Collapse
|
40
|
Greetham D, Wimalasena T, Kerruish DWM, Brindley S, Ibbett RN, Linforth RL, Tucker G, Phister TG, Smart KA. Development of a phenotypic assay for characterisation of ethanologenic yeast strain sensitivity to inhibitors released from lignocellulosic feedstocks. J Ind Microbiol Biotechnol 2014; 41:931-45. [PMID: 24664516 DOI: 10.1007/s10295-014-1431-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 02/26/2014] [Indexed: 12/16/2022]
Abstract
Inhibitors released by the breakdown of plant cell walls prevent efficient conversion of sugar into ethanol. The aim of this study was to develop a fast and reliable inhibitor sensitivity assay for ethanologenic yeast strains. The assay comprised bespoke 96-well plates containing inhibitors in isolation or combination in a format that was compatible with the Phenotypic Microarray Omnilog reader (Biolog, hayward, CA, USA). A redox reporter within the assay permits analysis of inhibitor sensitivity in aerobic and/or anaerobic conditions. Results from the assay were verified using growth on spot plates and tolerance assays in which maintenance of viability was assessed. The assay allows for individual and synergistic effects of inhibitors to be determined. It was observed that the presence of both acetic and formic acid significantly inhibited the yeast strains assessed, although this impact could be partially mitigated by buffering to neutral pH. Scheffersomyces stipitis, Candida spp., and Pichia guilliermondii demonstrated increased sensitivity to short chain weak acids at concentrations typically present in lignocellulosic hydrolysates. S. cerevisiae exhibited robustness to short chain weak acids at these concentrations. However, S. stipitis, Candida spp., and P. guilliermondii displayed increased tolerance to HMF when compared to that observed for S. cerevisiae. The results demonstrate that the phenotypic microarray assay developed in the current study is a valuable tool that can be used to identify yeast strains with desirable resistance to inhibitory compounds found in lignocellulosic hydrolysates.
Collapse
Affiliation(s)
- D Greetham
- Bioenergy and Brewing Science, School of Biosciences, Sutton Bonington Campus, University of Nottingham, Loughborough, Leicestershire, LE12 6RD, UK,
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Zha Y, Westerhuis JA, Muilwijk B, Overkamp KM, Nijmeijer BM, Coulier L, Smilde AK, Punt PJ. Identifying inhibitory compounds in lignocellulosic biomass hydrolysates using an exometabolomics approach. BMC Biotechnol 2014; 14:22. [PMID: 24655423 PMCID: PMC3998114 DOI: 10.1186/1472-6750-14-22] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 02/27/2014] [Indexed: 12/16/2022] Open
Abstract
Background Inhibitors are formed that reduce the fermentation performance of fermenting yeast during the pretreatment process of lignocellulosic biomass. An exometabolomics approach was applied to systematically identify inhibitors in lignocellulosic biomass hydrolysates. Results We studied the composition and fermentability of 24 different biomass hydrolysates. To create diversity, the 24 hydrolysates were prepared from six different biomass types, namely sugar cane bagasse, corn stover, wheat straw, barley straw, willow wood chips and oak sawdust, and with four different pretreatment methods, i.e. dilute acid, mild alkaline, alkaline/peracetic acid and concentrated acid. Their composition and that of fermentation samples generated with these hydrolysates were analyzed with two GC-MS methods. Either ethyl acetate extraction or ethyl chloroformate derivatization was used before conducting GC-MS to prevent sugars are overloaded in the chromatograms, which obscure the detection of less abundant compounds. Using multivariate PLS-2CV and nPLS-2CV data analysis models, potential inhibitors were identified through establishing relationship between fermentability and composition of the hydrolysates. These identified compounds were tested for their effects on the growth of the model yeast, Saccharomyces. cerevisiae CEN.PK 113-7D, confirming that the majority of the identified compounds were indeed inhibitors. Conclusion Inhibitory compounds in lignocellulosic biomass hydrolysates were successfully identified using a non-targeted systematic approach: metabolomics. The identified inhibitors include both known ones, such as furfural, HMF and vanillin, and novel inhibitors, namely sorbic acid and phenylacetaldehyde.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Peter J Punt
- TNO Microbiology & Systems Biology, Utrechtsweg 48, Zeist 3704 HE, The Netherlands.
| |
Collapse
|
42
|
Snelders J, Dornez E, Benjelloun-Mlayah B, Huijgen WJJ, de Wild PJ, Gosselink RJA, Gerritsma J, Courtin CM. Biorefining of wheat straw using an acetic and formic acid based organosolv fractionation process. BIORESOURCE TECHNOLOGY 2014; 156:275-82. [PMID: 24508905 DOI: 10.1016/j.biortech.2014.01.069] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/08/2014] [Accepted: 01/18/2014] [Indexed: 05/16/2023]
Abstract
To assess the potential of acetic and formic acid organosolv fractionation of wheat straw as basis of an integral biorefinery concept, detailed knowledge on yield, composition and purity of the obtained streams is needed. Therefore, the process was performed, all fractions extensively characterized and the mass balance studied. Cellulose pulp yield was 48% of straw dry matter, while it was 21% and 27% for the lignin and hemicellulose-rich fractions. Composition analysis showed that 67% of wheat straw xylan and 96% of lignin were solubilized during the process, resulting in cellulose pulp of 63% purity, containing 93% of wheat straw cellulose. The isolated lignin fraction contained 84% of initial lignin and had a purity of 78%. A good part of wheat straw xylan (58%) ended up in the hemicellulose-rich fraction, half of it as monomeric xylose, together with proteins (44%), minerals (69%) and noticeable amounts of acids used during processing.
Collapse
Affiliation(s)
- Jeroen Snelders
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Emmie Dornez
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Bouchra Benjelloun-Mlayah
- Compagnie Industrielle de la Matière Végétale (CIMV), 134-142 rue Danton, 92593 Levallois Perret, France
| | - Wouter J J Huijgen
- Energy Research Centre of The Netherlands (ECN), Biomass & Energy Efficiency, Westerduinweg 3, 1755 LE Petten, The Netherlands
| | - Paul J de Wild
- Energy Research Centre of The Netherlands (ECN), Biomass & Energy Efficiency, Westerduinweg 3, 1755 LE Petten, The Netherlands
| | - Richard J A Gosselink
- Wageningen UR Food & Biobased Research, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Jort Gerritsma
- DSM Bio-based Products & Services B.V., DSM Biotechnology Center, Alexander Fleminglaan 1, 2613 AX Delft, The Netherlands
| | - Christophe M Courtin
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium.
| |
Collapse
|
43
|
Moreno AD, Ibarra D, Alvira P, Tomás-Pejó E, Ballesteros M. A review of biological delignification and detoxification methods for lignocellulosic bioethanol production. Crit Rev Biotechnol 2014; 35:342-54. [DOI: 10.3109/07388551.2013.878896] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
44
|
Cybulska I, Chaturvedi T, Brudecki GP, Kádár Z, Meyer AS, Baldwin RM, Thomsen MH. Chemical characterization and hydrothermal pretreatment of Salicornia bigelovii straw for enhanced enzymatic hydrolysis and bioethanol potential. BIORESOURCE TECHNOLOGY 2014; 153:165-172. [PMID: 24362358 DOI: 10.1016/j.biortech.2013.11.071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/12/2013] [Accepted: 11/25/2013] [Indexed: 06/03/2023]
Abstract
Salicornia bigelovii straw was characterized and evaluated as a potential lignocellulosic bioethanol feedstock. S. bigelovii used in the study was grown in the United Arab Emirates using saltwater (40ppt) for irrigation. Salt removal was performed prior to pretreatment to protect the processing equipment and avoid inhibition of enzymes and yeast. Composition of the washed biomass was comparable to traditional lignocellulosic biomasses with relatively high glucan and xylan content (26 and 22g/100gDM, respectively) but with lower lignin content (7g/100gDM). The washed feedstock was subjected to hydrothermal pretreatment, producing highly digestible (up to 92% glucan-to-glucose conversion) and fermentable (up to 100% glucose-to-ethanol conversion) fiber fractions. Liquid fractions obtained in the pretreatment did not show inhibition towards Saccharomyces cerevisiae. No significant differences among the enzymatic convertibility and microbial fermentability of the fibers as well as low xylose recoveries suggest that lower severity pretreatment conditions could be exploited for S. bigelovii.
Collapse
Affiliation(s)
- Iwona Cybulska
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Tanmay Chaturvedi
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Grzegorz P Brudecki
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Zsófia Kádár
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Anne S Meyer
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Robert M Baldwin
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Mette Hedegaard Thomsen
- Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates.
| |
Collapse
|
45
|
Nakhshiniev B, Biddinika MK, Gonzales HB, Sumida H, Yoshikawa K. Evaluation of hydrothermal treatment in enhancing rice straw compost stability and maturity. BIORESOURCE TECHNOLOGY 2014; 151:306-13. [PMID: 24262840 DOI: 10.1016/j.biortech.2013.10.083] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 10/23/2013] [Accepted: 10/26/2013] [Indexed: 05/27/2023]
Abstract
In order to evaluate the hydrothermal treatment (HTT) in enhancing compost stability and maturity of lignocellulosic agricultural residues, a bin-scale (90 L) composting of rice straw with and without "HTT" was performed. The rice straw compost product with "HTT" after 6 weeks of composting can be considered stable and adequate for field application as expressed by pH of 8.4, "EC value" of 2.96 dS m(-1), C/N ratio of 12.5, microbial activity of <8.05 mg CO2 g(-1) OM d(-1), NH4(+)-N content of 93.75 mg kg(-1) DM and finally, by "GI" of >83%. However, compost may prove phytotoxic if used as growing media for EC sensitive plants. As for rice straw compost product without "HTT", the high microbial activity (>12.28 mg CO2 g(-1) OM d(-1)) even after 14 weeks of composting suggests that the residue has not stabilized yet and is far away from stability and maturity, although a higher GI (>100%) was observed.
Collapse
Affiliation(s)
- Bakhtiyor Nakhshiniev
- Department of Environmental Science and Technology, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan.
| | | | | | | | | |
Collapse
|
46
|
Ethanol from laccase-detoxified lignocellulose by the thermotolerant yeast Kluyveromyces marxianus—Effects of steam pretreatment conditions, process configurations and substrate loadings. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.07.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
47
|
Ferreira LC, Donoso-Bravo A, Nilsen PJ, Fdz-Polanco F, Pérez-Elvira SI. Influence of thermal pretreatment on the biochemical methane potential of wheat straw. BIORESOURCE TECHNOLOGY 2013; 143:251-257. [PMID: 23800630 DOI: 10.1016/j.biortech.2013.05.065] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 05/15/2013] [Accepted: 05/17/2013] [Indexed: 06/02/2023]
Abstract
The biochemical methane potential of steam exploded wheat straw was evaluated in a pilot plant under different temperature-time combinations. The optimum was obtained for 1 min and 220 °C thermal pretreatment (3.5 severity factor), resulting in a 20% increase in methane production respect non-treated straw. For more severe treatments the biodegradability decreased due to a possible formation of inhibitory compounds. The results of the tests were modeled with a first order equation to estimate the hydrolysis constant and biodegradability extent, and the influence of temperature and time on the kinetic parameters was obtained with a response surface study. The data processing confirmed the accuracy of the model and the optimum operation conditions, and demonstrated that the biomethanization of raw and pretreated wheat straw is limited by the hydrolysis, being the individual influence of temperature and time much more important than the interaction between them.
Collapse
Affiliation(s)
- L C Ferreira
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, C/Dr. Mergelina, s/n, 47011 Valladolid, Spain
| | | | | | | | | |
Collapse
|
48
|
Schultz-Jensen N, Thygesen A, Leipold F, Thomsen ST, Roslander C, Lilholt H, Bjerre AB. Pretreatment of the macroalgae Chaetomorpha linum for the production of bioethanol--comparison of five pretreatment technologies. BIORESOURCE TECHNOLOGY 2013; 140:36-42. [PMID: 23672937 DOI: 10.1016/j.biortech.2013.04.060] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 04/13/2013] [Accepted: 04/16/2013] [Indexed: 05/23/2023]
Abstract
A qualified estimate for pretreatment of the macroalgae Chaetomorpha linum for ethanol production was given, based on the experience of pretreatment of land-based biomass. C. linum was subjected to hydrothermal pretreatment (HTT), wet oxidation (WO), steam explosion (STEX), plasma-assisted pretreatment (PAP) and ball milling (BM), to determine effects of the pretreatment methods on the conversion of C. linum into ethanol by simultaneous saccharification and fermentation (SSF). WO and BM showed the highest ethanol yield of 44 g ethanol/100g glucan, which was close to the theoretical ethanol yield of 57 g ethanol/100g glucan. A 64% higher ethanol yield, based on raw material, was reached after pretreatment with WO and BM compared with unpretreated C. linum, however 50% of the biomass was lost during WO. Results indicated that the right combination of pretreatment and marine macroalgae, containing high amounts of glucan and cleaned from salts, enhanced the ethanol yield significantly.
Collapse
Affiliation(s)
- Nadja Schultz-Jensen
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads 229, DK-2800 Lyngby, Denmark.
| | | | | | | | | | | | | |
Collapse
|
49
|
Jung CD, Yu JH, Eom IY, Hong KS. Sugar yields from sunflower stalks treated by hydrothermolysis and subsequent enzymatic hydrolysis. BIORESOURCE TECHNOLOGY 2013; 138:1-7. [PMID: 23612155 DOI: 10.1016/j.biortech.2013.03.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/05/2013] [Accepted: 03/07/2013] [Indexed: 06/02/2023]
Abstract
To produce fermentable sugar with fewer microbial inhibitors via few processes, batch-type hydrothermal treatments of sunflower stalks were performed, followed by enzymatic hydrolysis of pretreatment slurries with Cellic CTec2 and Cellic HTec2 (9:1, v/v, 0.1 ml/g dry biomass, 8.1FPU). The yields of hemicellulosic sugars were maximized at the pretreatment condition of 180°C for 30 min, while the furfural and 5-hydroxymethyl-2-furaldehyde (HMF) concentrations remained low. The glucose yield, however, was only 67.0% of the theoretical glucose yield (TGY). Either the treatment of raw biomass prior to pretreatment or the post-treatment of pretreated residue prior to enzymatic hydrolysis increased the glucose yield as follows: washing the pretreated solid with solvents (90% TGY)>partial removal of liquid fraction from the pretreatment slurry (PS, 83%)>removal of hot-water extractives from the biomass prior to pretreatment (77%)>prewetting of the biomass (70%).
Collapse
Affiliation(s)
- Chan-Duck Jung
- Research Center for Biobased Chemistry, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea
| | | | | | | |
Collapse
|
50
|
Petrik S, Kádár Z, Márová I. Utilization of hydrothermally pretreated wheat straw for production of bioethanol and carotene-enriched biomass. BIORESOURCE TECHNOLOGY 2013; 133:370-377. [PMID: 23434815 DOI: 10.1016/j.biortech.2013.01.151] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 01/27/2013] [Accepted: 01/29/2013] [Indexed: 06/01/2023]
Abstract
In this work hydrothermally pretreated wheat straw was used for production of bioethanol by Saccharomyces cerevisiae and carotene-enriched biomass by red yeasts Rhodotorula glutinis, Cystofilobasidium capitatum and Sporobolomyces roseus. To evaluate the convertibility of pretreated wheat straw into ethanol, simultaneous saccharification and fermentation of S. cerevisiae was performed under semi-anaerobic conditions. The highest ethanol production efficiency of 65-66% was obtained following pretreatment at 200°C without the catalytic action of acetic acid, and at 195 and 200°C respectively in the presence of catalyst. Red yeast strain S. roseus produced 1.73-2.22 mg g(-1) of ergosterol on the filter cake, 1.15-4.17 mg g(-1) of ergosterol and 1.23-1.56 mg g(-1) of β-carotene on pretreated wheat straw hydrolysates and also the highest amount of carotenoids and ergosterol on untreated wheat straw (1.70 and 4.17 mg g(-1), respectively).
Collapse
Affiliation(s)
- Siniša Petrik
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic.
| | | | | |
Collapse
|