1
|
Mahroof M, Dar RA, Nazir R, Ali MN, Ganai BA. Valorization of rice straw and vascular aquatic weeds for sustainable prebiotic hemicellulosic autohydrolysate production: Extraction, characterization and fermentability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:35744-35759. [PMID: 38744764 DOI: 10.1007/s11356-024-33611-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 05/04/2024] [Indexed: 05/16/2024]
Abstract
This study describes the extraction and characterization of the hemicellulosic autohydrolysates (HAHs) derived from rice straw (RS) and vascular aquatic weeds like Typha angustifolia (TA) and Ceretophyllum demersum (CD). It further explores their capacity to sustain the proliferation of selected lactic acid bacteria (i.e., prebiotic activity) isolated from milk samples. To fractionate HAH from RS, TA and CD hot water extraction (HWE) method was used and RS, TA, and CD biomasses yielded 6.8, 4.99 and 2.98% of HAH corresponding to the hemicellulose extraction efficiencies of 26.15 ± 0.8%, 23.76 ± 0.6%, and 18.62 ± 0.4% respectively. The chemical characterization of HAH concentrates through HPLC showed that they comprised galactose, arabinose, xylose and glucose. The total phenol content of the RS, TA and CD-derived HAH concentrates were 37.53, 56.78 and 48.08 mg GAE/g. The five lactic acid bacteria (LAB) isolates Q1B, Q2A, Q3B, G1C and G2B selected for prebiotic activity assays generated mixed responses with the highest growth in RS-HAH for Q2A and the least in TA-HAH for Q3B. Further, the isolates Q2A, Q3B, G1C, and G2B, which showed the highest growth performance, were identified through MALDI-TOF and 16S rRNA sequencing as Lactobacillus brevis. All the tested LAB isolates showed diauxic growth in crude HAH preparations to maximize the utilization of carbon resources for their proliferation. This suggests that the selected LAB isolates are efficient degraders of hemicellulosic sugars. This paves the way for the valorization of lignocellulosic biomass to produce prebiotic hemicellulosic autohydrolysate and consequently enhances environmental sustainability by improving resource efficiency.
Collapse
Affiliation(s)
- Mawish Mahroof
- Centre of Research for Development (CORD), University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
| | - Rouf Ahmad Dar
- Centre of Research for Development (CORD), University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India.
| | - Ruqeya Nazir
- Centre of Research for Development (CORD), University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
| | - Md Niamat Ali
- Centre of Research for Development (CORD), University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
| | - Bashir Ahmad Ganai
- Centre of Research for Development (CORD), University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
| |
Collapse
|
2
|
Lignocellulosic Biorefinery Technologies: A Perception into Recent Advances in Biomass Fractionation, Biorefineries, Economic Hurdles and Market Outlook. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9030238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Lignocellulosic biomasses (LCB) are sustainable and abundantly available feedstocks for the production of biofuel and biochemicals via suitable bioconversion processing. The main aim of this review is to focus on strategies needed for the progression of viable lignocellulosic biomass-based biorefineries (integrated approaches) to generate biofuels and biochemicals. Processing biomass in a sustainable manner is a major challenge that demands the accomplishment of basic requirements relating to cost effectiveness and environmental sustainability. The challenges associated with biomass availability and the bioconversion process have been explained in detail in this review. Limitations associated with biomass structural composition can obstruct the feasibility of biofuel production, especially in mono-process approaches. In such cases, biorefinery approaches and integrated systems certainly lead to improved biofuel conversion. This review paper provides a summary of mono and integrated approaches, their limitations and advantages in LCB bioconversion to biofuel and biochemicals.
Collapse
|
3
|
Ovejero-Pérez A, Rigual V, Domínguez JC, Alonso MV, Oliet M, Rodriguez F. Effect of autohydrolysis and ionosolv treatments on eucalyptus fractionation and recovered lignin properties †. RSC Adv 2023; 13:10338-10348. [PMID: 37020891 PMCID: PMC10068429 DOI: 10.1039/d2ra08013c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/20/2023] [Indexed: 04/05/2023] Open
Abstract
Wood fractionation is key for the integral valorization of its three main components. In this sense, recovering the hemicellulosic fraction after the ionosolv treatment of lignocellulosic materials is one of the main drawbacks of this process. Thus, the incorporation of a previous autohydrolyisis step to recover the hemicellulosic sugars before the ionosolv treatment is an interesting approach. The influence of both treatments, autohydrolysis and ionosolv, on the biomass fractions recovery yields was studied by a central composite design of experiments, varying the autohydrolysis temperature in a 175–195 °C range and ionosolv time between 1–5 h. Lignin recovery and cellulose purity were maximized at 184 °C and 3.5 h of autohydrolysis temperature and ionosolv time, respectively. In addition, lignin properties were incorporated to the statistical model, revealing lignin recondensation at severe conditions and a higher influence of the ionosolv treatment on lignin characteristics. These results remarked the importance of studying the effect of both treatments in the whole fractionation process and not each process separately and enhanced the understanding of the treatments combination in a complete fractionation biorefinery approach. This work enhances the understanding of the effect of autohydrolysis and ionosolv treatments combination on fractionation yields and lignin properties.![]()
Collapse
Affiliation(s)
- Antonio Ovejero-Pérez
- Department of Chemical Engineering and Materials, Complutense University of Madrid28040 MadridSpain
| | - Victoria Rigual
- Department of Chemical Engineering and Materials, Complutense University of Madrid28040 MadridSpain
| | - Juan C. Domínguez
- Department of Chemical Engineering and Materials, Complutense University of Madrid28040 MadridSpain
| | - M. Virginia Alonso
- Department of Chemical Engineering and Materials, Complutense University of Madrid28040 MadridSpain
| | - Mercedes Oliet
- Department of Chemical Engineering and Materials, Complutense University of Madrid28040 MadridSpain
| | - Francisco Rodriguez
- Department of Chemical Engineering and Materials, Complutense University of Madrid28040 MadridSpain
| |
Collapse
|
4
|
Shangdiar S, Lin YC, Ponnusamy VK, Wu TY. Pretreatment of lignocellulosic biomass from sugar bagasse under microwave assisted dilute acid hydrolysis for biobutanol production. BIORESOURCE TECHNOLOGY 2022; 361:127724. [PMID: 35917859 DOI: 10.1016/j.biortech.2022.127724] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Alternative renewable energy sources are the future potential energy that will benefit the country's overall energy shortage and demand. The efficient biofuel production depends on the viability of the raw material used. The holistic approach of this study is to establish an integrated bioprocess from lignocellulosic material for biofuel synthesis. Sugar bagasse as one of the waste material, can be economically process for sugar extraction used in biofuel production. In this study, the optimum saccharification rate obtained was 43.62% when the biomass was pretreated at microwave temperature of 100 °C for 15 min with 2.5 g catalyst concentration. The results attained shows that hydrolysis time reduces to approximately 40-50% in compare with other traditional heating method. The sample was analyzed by using UV spectrophotometer and HPLC and computed by using Response Surface Method in MINITAB 17, whereas the structural changes of the residue was detected by using ATR-FTIR and ESEM.
Collapse
Affiliation(s)
- Sumarlin Shangdiar
- Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan; Center for Emerging Contaminants Research, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Yuan-Chung Lin
- Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan; Center for Emerging Contaminants Research, National Sun Yat-sen University, Kaohsiung 804, Taiwan; Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung City, 807, Taiwan.
| | - Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung City, Taiwan; Department of Chemistry, National Sun Yat-sen University, Kaohsiung City, Taiwan
| | - Tzi-Yi Wu
- Department of Chemical Engineering and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan
| |
Collapse
|
5
|
Liu Z, Shi E, Ma F, Zhou X, Jiang K. Improved Release of Monosaccharides and Ferulic Acid Using Enzyme Blends From Aspergillus Niger and Eupenicillium Parvum. Front Bioeng Biotechnol 2022; 9:814246. [PMID: 35155413 PMCID: PMC8830502 DOI: 10.3389/fbioe.2021.814246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 12/17/2021] [Indexed: 11/14/2022] Open
Abstract
Supplementing commercial xylanase and cellulase with selected debranching enzymes only resulted in slight enhancement of the enzymatic hydrolysis of wheat bran autohydrolysis residues (WBAR) which was obtained at 160°C over a 30-min period of autohdyrolysis, while a blend of enzymes from Aspergillus niger and Eupenicillium parvum achieved synergistic efficacy in this context. Using an equal mixture blend of these enzymes at a 0.5% (w/w) enzyme loading dosage with the addition of ferulic acid esterase (1 U/g substrate), the obtained hydrolysis yields were desirable, including 84.98% of glucose, 84.74% of xylose, 80.24% of arabinose, and 80.86% of ferulic acid. Following further separation using an HP-20 resin, the final ferulic acid recovery levels were as high as 62.5% of the esterified ferulic acid present within the initial WBAR input. Together, these data suggest that a combination of autohydrolysis and enzymatic hydrolysis using crude enzyme blends can efficiently achieve wheat bran enzymatic saccharification and associated ferulic acid release.
Collapse
Affiliation(s)
- Zhenghui Liu
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
| | - Enze Shi
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
| | - Feng Ma
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
| | - Xin Zhou
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Kankan Jiang
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, China
- *Correspondence: Kankan Jiang,
| |
Collapse
|
6
|
Gu Y, Hu Y, Huang C, Lai C, Ling Z, Yong Q. Co-production of amino acid-rich xylooligosaccharide and single-cell protein from paper mulberry by autohydrolysis and fermentation technologies. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2022; 15:1. [PMID: 35418087 PMCID: PMC8746646 DOI: 10.1186/s13068-021-02095-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 12/18/2021] [Indexed: 11/10/2022]
Abstract
Background Autohydrolysis is an extensively investigated pretreatment method due to its environmental friendliness. During autohydrolysis, most xylan from hemicellulose can be converted into xylooligosaccharides (XOS), and cellulose in the autohydrolyzed residues can be transformed into glucose after enzymatic hydrolysis. Both of these are value-added biochemicals in the biorefining process. In this work, paper mulberry (PM), which contains abundant protein, was utilized as a raw material to coproduce XOS and single-cell protein (SCP) through autohydrolysis and fermentation technologies. Results The results showed that 8.3 g of XOS and 1.8 g of amino acids could be recovered in the autohydrolysate (based on 100 g raw material) after autohydrolysis (170 °C, 1 h). Moreover, 5.7 g of low-DP XOS along with 1.8 g of amino acids could be further obtained from the autohydrolysate after hydrolysis with endo-β-1-4-xylanase. In addition, 20.1 g of fermentable monosaccharides was recovered after hydrolyzing the autohydrolyzed PM with cellulase, which can be used to produce 4.8 g of SCP after fermentation with Candida utilis. Conclusion As a valuable application of PM, a novel process is proposed to coproduce amino acid-rich XOS and SCP through autohydrolysis. The carbohydrate of PM is effectively converted to high value-added products.
Collapse
Affiliation(s)
- Yang Gu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Yingying Hu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Caoxing Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Chenhuan Lai
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Zhe Ling
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.,State Key Laboratory of Pulp Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Qiang Yong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| |
Collapse
|
7
|
Alokika, Anu, Kumar A, Kumar V, Singh B. Cellulosic and hemicellulosic fractions of sugarcane bagasse: Potential, challenges and future perspective. Int J Biol Macromol 2020; 169:564-582. [PMID: 33385447 DOI: 10.1016/j.ijbiomac.2020.12.175] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/29/2020] [Accepted: 12/23/2020] [Indexed: 12/01/2022]
Abstract
Sugarcane bagasse is a rich source of cellulose (32-45%), hemicellulose (20-32%) and lignin (17-32%), 1.0-9.0% ash and some extractives. Huge amount of the generation of sugarcane bagasse has been a great challenge to industries and environment at global level for many years. Though cellulosic and hemicellulosic fractions in bagasse makes it a potential raw substrate for the production of value-added products at large scale, the presence of lignin hampers its saccharification which further leads to low yields of the value-added products. Therefore, an appropriate pretreatment strategy is of utmost importance that effectively solubilizes the lignin that exposes cellulose and hemicellulose for enzymatic action. Pretreatment also reduces the biomass recalcitrance i.e., cellulose crystallinity, structural complexity of cell wall and lignification for its effective utilization in biorefinery. Sugarcane bagasse served as nutrient medium for the cultivation of diverse microorganisms for the production of industrially important metabolites including enzymes, reducing sugars, prebiotic, organic acids and biofuels. Sugarcane bagasse has been utilized in the generation of electricity, syngas and as biosorbant in the bioremediation of heavy metals. Furthermore, the ash generated from bagasse is an excellent source for the synthesis of high strength and light weight bricks and tiles. Present review describes the utility of sugarcane bagasse as sustainable and renewable lignocellulosic substrate for the production of industrially important multifarious value-added products.
Collapse
Affiliation(s)
- Alokika
- Laboratory of Bioprocess Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Anu
- Laboratory of Bioprocess Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Anil Kumar
- Department of Botany, Pt. N.R.S. Govt. College, Rohtak 124001, Haryana, India
| | - Vinod Kumar
- Department of Chemistry, Central University of Haryana, Jant-Pali, Mahendergarh 123031, Haryana, India
| | - Bijender Singh
- Laboratory of Bioprocess Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India; Department of Biotechnology, Central University of Haryana, Jant-Pali, Mahendergarh 123031, Haryana, India.
| |
Collapse
|
8
|
Brunerová A, Roubík H, Brožek M, Van Dung D, Phung LD, Hasanudin U, Iryani DA, Herák D. Briquetting of sugarcane bagasse as a proper waste management technology in Vietnam. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2020; 38:1239-1250. [PMID: 32686610 DOI: 10.1177/0734242x20938438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The present research describes an application of high-pressure briquetting technology to the waste management of sugarcane processing in Vietnam. The amount of generated sugarcane bagasse was monitored during sugarcane processing within the street juice production in Hue city, Vietnam. Generated sugarcane bagasse was subjected to fuel parameters analysis within its suitability for direct combustion. The obtained sugarcane bagasse was converted into bio-briquette fuel by a high-pressure briquetting press and its mechanical quality was determined. Results proved that the proportion of generated sugarcane bagasse from whole sugarcane stem mass was equal to 35.45%. This indicated generation of an abundant amount of sugarcane bagasse worldwide in general. Fuel parameters analysis proved high quality level of low ash content = 0.97% and high calorific values (gross calorific value = 18.35 MJ·kg-1, net calorific value = 17.06 MJ·kg-1), which indicated good suitability for direct combustion processes. Indicators of mechanical quality proved the following observations: mechanical durability = 99.29%, compressive strength = 150.82 N∙mm-1 and bulk density = 1022.44 kg·m-3, with all these indicators representing positive results. In general, the observed results indicated suitability of sugarcane bagasse valorization within the production of bio-briquette fuel by using high-pressure briquetting technology. Finally, analysis of such waste biomass proved its great potential for energy recovery, thus, the advantage of its valorization within the sustainable technologies.
Collapse
Affiliation(s)
- Anna Brunerová
- Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Hynek Roubík
- Department of Sustainable Technologies, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Milan Brožek
- Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Dinh Van Dung
- Department of Animal Nutrition and Biochemistry, Faculty of Animal Sciences & Veterinary Medicine, Hue University, Hue University of Agriculture & Forestry, Hue City, Vietnam
| | - Le Dinh Phung
- Department of Animal Nutrition and Biochemistry, Faculty of Animal Sciences & Veterinary Medicine, Hue University, Hue University of Agriculture & Forestry, Hue City, Vietnam
| | - Udin Hasanudin
- Department of Agro-industrial Technology, Faculty of Agriculture, University of Lampung, Bandar Lampung, Republic of Indonesia
| | - Dewi Agustina Iryani
- Department of Chemical Engineering, Engineering Faculty, University of Lampung, Bandar Lampung, Republic of Indonesia
| | - David Herák
- Department of Mechanical Engineering, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic
| |
Collapse
|
9
|
Zhang X, Zhang W, Lei F, Yang S, Jiang J. Coproduction of xylooligosaccharides and fermentable sugars from sugarcane bagasse by seawater hydrothermal pretreatment. BIORESOURCE TECHNOLOGY 2020; 309:123385. [PMID: 32325380 DOI: 10.1016/j.biortech.2020.123385] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
In this study, natural seawater without additional chemicals was selected to treat sugarcane bagasse for the production of xylooligosaccharides and glucose. This pretreatment not only more effectively conserves freshwater resources than hydrothermal pretreatment and enzymatic hydrolysis, but also decreases corrosion of the equipment relative to techniques utilizing acid and alkaline pretreatment. The maximum yield of 67.12% xylooligosaccharides (of initial xylan), including 11.49% xylobiose, 16.23% xylotriose, 23.82% xylotetraose, and 15.58% xylopentaose was obtained under mild condition (175 °C for 30 min). Moreover, greater amounts of xylotetraose were generated during seawater hydrothermal pretreatment under all conditions, likely because NaCl in seawater cut the hydrogen bonds between xylo-oligomers. In addition, 94.69% cellulose digestibility and 78.58% xylan digestibility were achieved from the solid residue with an enzyme dosage of 30 FPU/g cellulose. Results indicated that seawater hydrothermal pretreatment is a more environmentally-friendly and sustainable technique for producing xylooligosaccharides and fermentable sugars than other methods.
Collapse
Affiliation(s)
- Xiankun Zhang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Weiwei Zhang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Fuhou Lei
- GuangXi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China
| | - Shujuan Yang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Jianxin Jiang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China.
| |
Collapse
|
10
|
Abstract
This article considers the problem of the evaluation of the sustainability of heterogeneous process systems, which can have different areas of focus: from single process operations to complete supply chains. The proposed method defines exergy-based concepts to evaluate the assets, liabilities, and the exergy footprint of the analysed process systems, ensuring that they are suitable for Life Cycle Assessment. The proposed concepts, evaluation framework and cumulative Exergy Composite Curves allow the quantitative assessment of process systems, including alternative solutions. The provided case studies clearly illustrate the applicability of the method and the close quantitative relationship between the exergy profit and the potential sustainability contribution of the proposed solutions. The first case study demonstrates how the method is applied to the separation and reuse of an acetic-acid-containing waste stream. It is shown that the current process is not sustainable and needs substantial external exergy input and deeper analysis. The second case study concerns Municipal Solid Waste treatment and shows the potential value and sustainability benefit that can be achieved by the extraction of useful chemicals and waste-to-energy conversion. The proposed exergy footprint accounting framework clearly demonstrates the potential to be applied to sustainability assessment and process improvement while simultaneously tracking different kinds of resources and impacts.
Collapse
|
11
|
Tan L, Liu Z, Zhang T, Wang Z, Liu T. Enhanced enzymatic digestibility of poplar wood by quick hydrothermal treatment. BIORESOURCE TECHNOLOGY 2020; 302:122795. [PMID: 32004810 DOI: 10.1016/j.biortech.2020.122795] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 05/26/2023]
Abstract
To elevate the glucose yield from the enzymatic hydrolysis of poplar wood for bio-ethanol production, quick hydrothermal treatment (QHT) was conducted at 200 °C for a short period of time from 5 min to 25 min. It was found that the QHT could remove >85% of the hemicelluloses and ~30% of the lignin in the poplar wood, and achieve 82% cellulose conversion at a low cellulase dosage of 10 FPU/g substrate. The enhancement digestibility of poplar wood was ascribed to the higher accessibility of cellulose, as the specific surface area of the substrate increased from 3.0 m2/g to 7.1 m2/g from the of untreated wood to the QHT-treated wood. The results demonstrate the improvements in digestibility and hydrolysis rates after QHT.
Collapse
Affiliation(s)
- Liping Tan
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Zhongyang Liu
- Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Tongtong Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Zhaojiang Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Tongjun Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
| |
Collapse
|
12
|
Qian S, Li X, Sun L, Shen Y, Ren Q, Diao E, Lu Z. Exploration of production of C 14 and C 15 bacillomycin D homologues with enzymatic hydrolysis from maize straws using fed-batch fermentation by Bacillus subtilis NS-174. RSC Adv 2020. [DOI: 10.1039/c9ra10536k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A strain with strong antifungal activity, Bacillus subtilis NS-174, was identified and the antifungal compounds were purified and structurally analyzed by high performance liquid chromatography-mass spectrometry/mass spectrometry (HPLC-MS/MS).
Collapse
Affiliation(s)
- Shiquan Qian
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection
- Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation
- Huaiyin Normal University
- Huaian 223300
| | - Xuejin Li
- School of Biological and Food Engineering
- Bengbu University
- Bengbu
- China
| | - Lu Sun
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Yuanyuan Shen
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection
- Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation
- Huaiyin Normal University
- Huaian 223300
| | - Qingyi Ren
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection
- Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation
- Huaiyin Normal University
- Huaian 223300
| | - Enjie Diao
- Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection
- Jiangsu Key Laboratory for Food Safety and Nutrition Function Evaluation
- Huaiyin Normal University
- Huaian 223300
| | - Zhaoxin Lu
- College of Food Science and Technology
- Nanjing Agricultural University
- Nanjing 210095
- China
| |
Collapse
|
13
|
Corbett DB, Knoll C, Venditti R, Jameel H, Park S. Fiber fractionation to understand the effect of mechanical refining on fiber structure and resulting enzymatic digestibility of biomass. Biotechnol Bioeng 2019; 117:924-932. [PMID: 31885079 DOI: 10.1002/bit.27258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/25/2019] [Accepted: 12/21/2019] [Indexed: 11/07/2022]
Abstract
Mechanical refining results in fiber deconstruction and modifications that enhance enzyme accessibility to carbohydrates. Further understanding of the morphological changes occurring to biomass during mechanical refining and the impacts of these changes on enzymatic digestibility is necessary to maximize yields and reduce energy consumption. Although the degree of fiber length reduction relative to fibrillation/delamination can be impacted by manipulating refining variables, mechanical refining of any type (PFI, disk, and valley beater) typically results in both phenomena. Separating the two is not straightforward. In this study, fiber fractionation based on particle size performed after mechanical refining of high-lignin pulp was utilized to successfully elucidate the relative impact of fibrillation/delamination and fiber cutting phenomena during mechanical refining. Compositional analysis showed that fines contain significantly more lignin than larger size fractions. Enzymatic hydrolysis results indicated that within fractions of uniform fiber length, fibrillation/delamination due to mechanical refining increased enzymatic conversion by 20-30 percentage points. Changes in fiber length had little effect on digestibility for fibers longer than ~0.5 mm. However, the digestibility of the fines fractions was high for all levels of refining even with the high-lignin content.
Collapse
Affiliation(s)
- Derek B Corbett
- Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina
| | - Charlie Knoll
- Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina
| | - Richard Venditti
- Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina
| | - Hasan Jameel
- Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina
| | - Sunkyu Park
- Department of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina
| |
Collapse
|
14
|
Li M, Guo C, Luo B, Chen C, Wang S, Min D. Comparing impacts of physicochemical properties and hydrolytic inhibitors on enzymatic hydrolysis of sugarcane bagasse. Bioprocess Biosyst Eng 2019; 43:111-122. [PMID: 31538235 DOI: 10.1007/s00449-019-02209-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/01/2019] [Accepted: 09/05/2019] [Indexed: 11/29/2022]
Abstract
An autohydrolysis pretreatment with different conditions was applied to sugarcane bagasse to compare the impacts of the physicochemical properties and hydrolytic inhibitors on its enzymatic hydrolysis. The results indicate that the autohydrolysis conditions significantly affected the physicochemical properties and inhibitors, which further affected the enzymatic hydrolysis. The inhibitor amount, pore size, and crystallinity degree increased with increasing autohydrolysis severity. Furthermore, the enzymatic hydrolysis was enhanced with increasing severity owing to the removal of hemicellulose and lignin. The physicochemical obstruction impeded the enzymatic hydrolysis more than the inhibitors. The multivariate correlated component regression analysis enabled an evaluation of the correlations between the physicochemical properties (and inhibitors) and enzymatic hydrolysis for the first time. According to the results, an autohydrolysis with a severity of 4.01 is an ideal pretreatment for sugarcane bagasse for sugar production.
Collapse
Affiliation(s)
- Mingfu Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Chenyan Guo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Bin Luo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China.,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, People's Republic of China. .,Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, People's Republic of China.
| |
Collapse
|
15
|
|
16
|
Zhang H, Huang S, Wei W, Zhang J, Xie J. Investigation of alkaline hydrogen peroxide pretreatment and Tween 80 to enhance enzymatic hydrolysis of sugarcane bagasse. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:107. [PMID: 31073331 PMCID: PMC6498686 DOI: 10.1186/s13068-019-1454-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 04/25/2019] [Indexed: 05/25/2023]
Abstract
BACKGROUND Due to the intact structure of lignocellulosic biomass, pretreatment was a prerequisite to improve the enzymatic hydrolysis by disrupting the recalcitrant lignocellulose and increasing the accessibility of cellulose to enzyme. In this study, an alkaline hydrogen peroxide (AHP) pretreatment of sugarcane bagasse with various loadings of H2O2 (1.25-6.25 wt%) at temperatures of 60-160 °C was proposed to degrade hemicellulose/lignin and improve the enzymatic digestibility. RESULTS It was found that increasing H2O2 loadings during pretreatment lead to the enhancement of substrate digestibility, whereas the alkali (only NaOH)-pretreated solid generated higher glucose yield than that pretreated under AHP pretreatment with lower loading of H2O2. This enhancement of enzymatic digestibility was due to the degradation of hemicellulose and lignin. Furthermore, Tween 80 was added to promote enzymatic digestibility, however, the increased yields were different with various substrates and hydrolysis time. The highest glucose yield of 77.6% was obtained after pretreatment at 160 °C for 60 min with 6.25% H2O2 and the addition of Tween 80, representing 89.1% of glucose in pretreated substrate. CONCLUSIONS This study demonstrated that the AHP pretreatment could greatly enhance the enzymatic saccharification. The addition of Tween 80 played remarkable performances in promoting the glucose yield during enzymatic hydrolysis by stabilizing and protecting the enzyme activity. This study provided an economical feasible and gradual process for the generation of glucose, which will be subsequently converted to bioethanol and bio-chemicals.
Collapse
Affiliation(s)
- Hongdan Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou, 510642 People’s Republic of China
- CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Guangzhou, 510640 People’s Republic of China
| | - Shihang Huang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou, 510642 People’s Republic of China
| | - Weiqi Wei
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037 People’s Republic of China
| | - Jiajie Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou, 510642 People’s Republic of China
| | - Jun Xie
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou, 510642 People’s Republic of China
| |
Collapse
|
17
|
On-site produced and commercially available alkali-active xylanases compared for xylan extraction from sugarcane bagasse. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
18
|
Corbett DB, Hong C, Venditti R, Jameel H, Park S. Hydrophobic resin treatment of hydrothermal autohydrolysate for prebiotic applications. RSC Adv 2019; 9:31819-31827. [PMID: 35530764 PMCID: PMC9072710 DOI: 10.1039/c9ra06018a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/29/2019] [Indexed: 11/21/2022] Open
Abstract
∼30% of xylooligosaccharides (XOS) in autohydrolysate are likely bonded to lignin “tied,” contributing to loss during resin purification. Loss of “free” XOS depends on DP.
Collapse
Affiliation(s)
- Derek B. Corbett
- North Carolina State University
- Department of Forest Biomaterials
- Raleigh
- USA
| | - Changyoung Hong
- North Carolina State University
- Department of Forest Biomaterials
- Raleigh
- USA
| | - Richard Venditti
- North Carolina State University
- Department of Forest Biomaterials
- Raleigh
- USA
| | - Hasan Jameel
- North Carolina State University
- Department of Forest Biomaterials
- Raleigh
- USA
| | - Sunkyu Park
- North Carolina State University
- Department of Forest Biomaterials
- Raleigh
- USA
| |
Collapse
|
19
|
Zhang F, Jiang X, Lin J, Zhao G, Chang HM, Jameel H. Reactivity improvement by phenolation of wheat straw lignin isolated from a biorefinery process. NEW J CHEM 2019. [DOI: 10.1039/c8nj05016c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work describes an effective phenolation process to improve wheat straw biorefinery lignin reactivity.
Collapse
Affiliation(s)
- Fangda Zhang
- Beijing Key Laboratory of Wood Science and Engineering
- Beijing Forestry University
- Beijing 100083
- China
- Department of Forest Biomaterials
| | - Xiao Jiang
- Department of Forest Biomaterials
- North Carolina State University
- Raleigh
- USA
| | - Jian Lin
- Beijing Key Laboratory of Wood Science and Engineering
- Beijing Forestry University
- Beijing 100083
- China
| | - Guangjie Zhao
- Beijing Key Laboratory of Wood Science and Engineering
- Beijing Forestry University
- Beijing 100083
- China
| | - Hou-min Chang
- Department of Forest Biomaterials
- North Carolina State University
- Raleigh
- USA
| | - Hasan Jameel
- Department of Forest Biomaterials
- North Carolina State University
- Raleigh
- USA
| |
Collapse
|
20
|
Corbett DB, Venditti R, Jameel H, Park S. Effect of Mechanical Refining Energy on the Enzymatic Digestibility of Lignocellulosic Biomass. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02932] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Derek B. Corbett
- North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Drive, Raleigh, North Carolina 27606, United States
| | - Richard Venditti
- North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Drive, Raleigh, North Carolina 27606, United States
| | - Hasan Jameel
- North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Drive, Raleigh, North Carolina 27606, United States
| | - Sunkyu Park
- North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Drive, Raleigh, North Carolina 27606, United States
| |
Collapse
|
21
|
Zhang H, Lyu G, Zhang A, Li X, Xie J. Effects of ferric chloride pretreatment and surfactants on the sugar production from sugarcane bagasse. BIORESOURCE TECHNOLOGY 2018; 265:93-101. [PMID: 29885498 DOI: 10.1016/j.biortech.2018.05.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 05/08/2023]
Abstract
An efficient pretreatment with various concentrations of FeCl3 (0.005-0.2 mol/L) was developed to extract hemicellulose in sugarcane bagasse and enhance the enzymatic hydrolysis of cellulose in pretreated solids. It was found that 0.025 mol/L FeCl3 pretreated substrate yielded a high glucose yield of 80.1% during enzymatic hydrolysis. Then the characterization of raw material and pretreated solids was carried out to better understand how hemicellulose removal affected subsequent enzymatic hydrolysis. In addition, Tween 80 and Bovine Serum Albumin (BSA) were added to promote enzymatic hydrolysis of pretreated substrate. Together with that obtained from pretreatment, the highest glucose yield reached 97.7% with addition of Tween 80, meanwhile, a reduction of 50% loading of enzyme yielded the same level of glucose. However, the increased yields with additives decreased gradually as the hydrolysis time was extended. Furthermore, the enhancement mechanisms of Tween 80 and BSA were determined.
Collapse
Affiliation(s)
- Hongdan Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China, Qilu University of Technology, Jinan 250353, PR China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China.
| | - Gaojin Lyu
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China, Qilu University of Technology, Jinan 250353, PR China
| | - Aiping Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China
| | - Xin Li
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China
| | - Jun Xie
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China.
| |
Collapse
|
22
|
Chandel AK, Garlapati VK, Singh AK, Antunes FAF, da Silva SS. The path forward for lignocellulose biorefineries: Bottlenecks, solutions, and perspective on commercialization. BIORESOURCE TECHNOLOGY 2018; 264:370-381. [PMID: 29960825 DOI: 10.1016/j.biortech.2018.06.004] [Citation(s) in RCA: 184] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/02/2018] [Accepted: 06/04/2018] [Indexed: 05/05/2023]
Abstract
Lignocellulose biorefinery encompasses process engineering and biotechnology tools for the processing of lignocellulosic biomass for the manufacturing of bio-based products (such as biofuels, bio-chemicals, biomaterials). While, lignocellulose biorefinery offers clear value proposition, success at industrial level has not been vibrant for the commercial production of renewable chemicals and fuels. This is because of high capital and operating expenditures, irregularities in biomass supply chain, technical process immaturity, and scale up challenges. As a result, commercial production of biochemicals and biofuels with right economics is still lagging behind. To hit the market place, efforts are underway by bulk and specialty chemicals producing companies like DSM (Succinic acid, Cellulosic ethanol), Dow-DuPont (1,3-Propanediol, 1,4-Butanediol), Clariant-Global bioenergies-INEOS (bio-isobutene), Braskem (Ethylene, polypropylene), Raizen, Gran-bio and POET-DSM (Cellulosic ethanol), Amyris (Farnesene), and several other potential players. This paper entails the concept of lignocellulose biorefinery, technical challenges for industrialization of renewable fuels and bulk chemicals and future directions.
Collapse
Affiliation(s)
- Anuj Kumar Chandel
- Department of Biotechnology, Engineering School of Lorena (EEL), University of São Paulo, Lorena 12.602.810, Brazil.
| | - Vijay Kumar Garlapati
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat 173234, Himachal Pradesh, India
| | - Akhilesh Kumar Singh
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Lucknow 226028, India
| | | | - Silvio Silvério da Silva
- Department of Biotechnology, Engineering School of Lorena (EEL), University of São Paulo, Lorena 12.602.810, Brazil
| |
Collapse
|
23
|
Santos TM, Alonso MV, Oliet M, Domínguez JC, Rigual V, Rodriguez F. Effect of autohydrolysis on Pinus radiata wood for hemicellulose extraction. Carbohydr Polym 2018; 194:285-293. [DOI: 10.1016/j.carbpol.2018.04.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/11/2018] [Accepted: 04/01/2018] [Indexed: 10/17/2022]
|
24
|
Zhang H, Fan M, Li X, Zhang A, Xie J. Enhancing enzymatic hydrolysis of sugarcane bagasse by ferric chloride catalyzed organosolv pretreatment and Tween 80. BIORESOURCE TECHNOLOGY 2018; 258:295-301. [PMID: 29555585 DOI: 10.1016/j.biortech.2018.03.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 05/15/2023]
Abstract
In this work, a FeCl3-catalyzed organosolv pretreatment was employed at 160 °C to remove hemicellulose and lignin in sugarcane bagasse leaving the cellulose-enriched residue for enzymatic hydrolysis to sugars. The solubilized hemicellulose fractions consisted more monomer xylose than oligomer xylose. The FeCl3-catalyzed organosolv pretreatment significantly improved the enzymatic hydrolysis, nearly 100% of cellulose components were converted to glucose after pretreatment with 0.05 M FeCl3. Structural analysis was employed to reveal how pretreatment affected the enzymatic hydrolysis. With the addition of Tween 80, the same level of glucose was obtained with 50% reduction of enzyme dosage after 24 h. Furthermore, the influence of Tween 80 on different pretreatment systems was investigated, indicating that the improvement was increased as the lignin content increased, decreased with high enzyme loading and extending hydrolysis time. This work suggested that the addition of Tween 80 could improve the enzymatic hydrolysis, reduce the hydrolysis time and enzyme dosage.
Collapse
Affiliation(s)
- Hongdan Zhang
- College of Forestry and Landscape Architecture, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, and Application, Guangzhou 510640, PR China; State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530003, PR China.
| | - Meishan Fan
- College of Forestry and Landscape Architecture, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China
| | - Xin Li
- College of Forestry and Landscape Architecture, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China
| | - Aiping Zhang
- College of Forestry and Landscape Architecture, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China
| | - Jun Xie
- College of Forestry and Landscape Architecture, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China.
| |
Collapse
|
25
|
de Gouvêa PF, Bernardi AV, Gerolamo LE, de Souza Santos E, Riaño-Pachón DM, Uyemura SA, Dinamarco TM. Transcriptome and secretome analysis of Aspergillus fumigatus in the presence of sugarcane bagasse. BMC Genomics 2018; 19:232. [PMID: 29614953 PMCID: PMC5883313 DOI: 10.1186/s12864-018-4627-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/27/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Sugarcane bagasse has been proposed as a lignocellulosic residue for second-generation ethanol (2G) produced by breaking down biomass into fermentable sugars. The enzymatic cocktails for biomass degradation are mostly produced by fungi, but low cost and high efficiency can consolidate 2G technologies. A. fumigatus plays an important role in plant biomass degradation capabilities and recycling. To gain more insight into the divergence in gene expression during steam-exploded bagasse (SEB) breakdown, this study profiled the transcriptome of A. fumigatus by RNA sequencing to compare transcriptional profiles of A. fumigatus grown on media containing SEB or fructose as the sole carbon source. Secretome analysis was also performed using SDS-PAGE and LC-MS/MS. RESULTS The maximum activities of cellulases (0.032 U mL-1), endo-1,4-β--xylanase (10.82 U mL-1) and endo-1,3-β glucanases (0.77 U mL-1) showed that functional CAZymes (carbohydrate-active enzymes) were secreted in the SEB culture conditions. Correlations between transcriptome and secretome data identified several CAZymes in A. fumigatus. Particular attention was given to CAZymes related to lignocellulose degradation and sugar transporters. Genes encoding glycoside hydrolase classes commonly expressed during the breakdown of cellulose, such as GH-5, 6, 7, 43, 45, and hemicellulose, such as GH-2, 10, 11, 30, 43, were found to be highly expressed in SEB conditions. Lytic polysaccharide monooxygenases (LPMO) classified as auxiliary activity families AA9 (GH61), CE (1, 4, 8, 15, 16), PL (1, 3, 4, 20) and GT (1, 2, 4, 8, 20, 35, 48) were also differentially expressed in this condition. Similarly, the most important enzymes related to biomass degradation, including endoxylanases, xyloglucanases, β-xylosidases, LPMOs, α-arabinofuranosidases, cellobiohydrolases, endoglucanases and β-glucosidases, were also identified in the secretome. CONCLUSIONS This is the first report of a transcriptome and secretome experiment of Aspergillus fumigatus in the degradation of pretreated sugarcane bagasse. The results suggest that this strain employs important strategies for this complex degradation process. It was possible to identify a set of genes and proteins that might be applied in several biotechnology fields. This knowledge can be exploited for the improvement of 2G ethanol production by the rational design of enzymatic cocktails.
Collapse
Affiliation(s)
- Paula Fagundes de Gouvêa
- Faculty of Philosophy, Sciences and Literature of Ribeirão Preto, Chemistry Department, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Aline Vianna Bernardi
- Faculty of Philosophy, Sciences and Literature of Ribeirão Preto, Chemistry Department, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Luis Eduardo Gerolamo
- Faculty of Philosophy, Sciences and Literature of Ribeirão Preto, Chemistry Department, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Emerson de Souza Santos
- Faculty of Pharmaceutical Science, Department of Clinical, Toxicological and Bromatological Analysis, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Diego Mauricio Riaño-Pachón
- Brazilian Bioethanol Science and Technology Laboratory, Campinas, São Paulo, Brazil
- Current address: Laboratory of Regulatory Systems Biology, Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Sergio Akira Uyemura
- Faculty of Pharmaceutical Science, Department of Clinical, Toxicological and Bromatological Analysis, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Taisa Magnani Dinamarco
- Faculty of Philosophy, Sciences and Literature of Ribeirão Preto, Chemistry Department, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| |
Collapse
|
26
|
Liu L, Chang HM, Jameel H, Park S. Furfural production from biomass pretreatment hydrolysate using vapor-releasing reactor system. BIORESOURCE TECHNOLOGY 2018; 252:165-171. [PMID: 29324276 DOI: 10.1016/j.biortech.2018.01.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/28/2017] [Accepted: 01/01/2018] [Indexed: 05/26/2023]
Abstract
Biomass hydrolysate from autohydrolysis pretreatment was used for furfural production considering it is in rich of xylose, xylo-oligomers, and other decomposition products from hemicellulose structure. By using the vapor-releasing reactor system, furfural was protected from degradation by separating it from the reaction media. The maximum furfural yield of 73% was achieved at 200 °C for biomass hydrolysate without the use of the catalyst. This is because the presence of organic acids such as acetic acid in hydrolysate functioned as a catalyst. According to the results in this study, biomass hydrolysate with a vapor-releasing system proves to be efficient for furfural production. The biorefinery process which allows the separation of xylose-rich autohydrolysate from other parts from biomass feedstock also improves the overall application of the biomass.
Collapse
Affiliation(s)
- Lu Liu
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, United States
| | - Hou-Min Chang
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, United States
| | - Hasan Jameel
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, United States
| | - Sunkyu Park
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, United States.
| |
Collapse
|
27
|
Carvalho AFA, Marcondes WF, de Oliva Neto P, Pastore GM, Saddler JN, Arantes V. The potential of tailoring the conditions of steam explosion to produce xylo-oligosaccharides from sugarcane bagasse. BIORESOURCE TECHNOLOGY 2018; 250:221-229. [PMID: 29174899 DOI: 10.1016/j.biortech.2017.11.041] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/09/2017] [Accepted: 11/13/2017] [Indexed: 06/07/2023]
Abstract
In this study, the potential of the steam explosion (SE) method to produce high levels XOS from sugarcane bagasse, a xylan-rich hemicellulosic feedstock, was assessed. The effect of different operating conditions on XOS production yield and selectivity were investigated using a mini-pilot scale SE unit. The results show that even under a non-optimized condition (190 °C, 5 min and 0.5% H2SO4 as catalyst), SE led to about 40% xylan recovery as XOS, which was comparable to the well-known, multi-step, enzymatic production of XOS from alkaline-extracted xylan, and other commonly employed chemical methods. In addition, the XOS-rich hydrolysate from SE constituted of greater diversity in the degree of polymerization, which has been shown to be desirable for prebiotic application.
Collapse
Affiliation(s)
- Ana Flavia Azevedo Carvalho
- Department of Wood Science, Forest Sciences Centre, University of British Columbia, 2424 Main Mall, V6TIZ4 Vancouver, BC, Canada; Associated Laboratory of Bioenergy Research Institute (IPBEN), Bioprocess Unit, São Paulo State University (UNESP), Av. Dom Antonio, 2100, 19806-380 Assis, SP, Brazil; Department of Food Science, School of Food Engineering, State University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862 Campinas, SP, Brazil
| | - Wilian Fioreli Marcondes
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo (USP), Lorena, SP, Brazil
| | - Pedro de Oliva Neto
- Associated Laboratory of Bioenergy Research Institute (IPBEN), Bioprocess Unit, São Paulo State University (UNESP), Av. Dom Antonio, 2100, 19806-380 Assis, SP, Brazil
| | - Glaucia Maria Pastore
- Department of Food Science, School of Food Engineering, State University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862 Campinas, SP, Brazil
| | - Jack N Saddler
- Department of Wood Science, Forest Sciences Centre, University of British Columbia, 2424 Main Mall, V6TIZ4 Vancouver, BC, Canada
| | - Valdeir Arantes
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo (USP), Lorena, SP, Brazil.
| |
Collapse
|
28
|
Zhang H, Zhang S, Yuan H, Lyu G, Xie J. FeCl 3-catalyzed ethanol pretreatment of sugarcane bagasse boosts sugar yields with low enzyme loadings and short hydrolysis time. BIORESOURCE TECHNOLOGY 2018; 249:395-401. [PMID: 29059622 DOI: 10.1016/j.biortech.2017.10.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 10/11/2017] [Accepted: 10/12/2017] [Indexed: 05/22/2023]
Abstract
An organosolv pretreatment system consisting of 60% ethanol and 0.025 mol·L-1 FeCl3 under various temperatures was developed in this study. During the pretreatment, the highest xylose yield was 11.4 g/100 g raw material, representing 49.8% of xylose in sugarcane bagasse. Structural features of raw material and pretreated substrates were characterized to better understand how hemicellulose removal and delignification affected subsequent enzymatic hydrolysis. The 160 °C pretreated solid presented a remarkable glucose yield of 93.8% for 72 h. Furthermore, the influence of different additives on the enzymatic hydrolysis of pretreated solid was investigated. The results indicated that the addition of Tween 80 shortened hydrolysis time to 6 h and allowed a 50% reduction of enzyme loading to achieve the same level of glucose yield. This work suggested that FeCl3-catalyzed organosolv pretreatment could improve the enzymatic hydrolysis significantly and reduce the hydrolysis time and enzyme dosage with the addition of Tween 80.
Collapse
Affiliation(s)
- Hongdan Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research, Development, and Application, Guangzhou 510640, PR China; Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China, Qilu University of Technology, Jinan 250353, PR China
| | - Shuaishuai Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China
| | - Hongyou Yuan
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research, Development, and Application, Guangzhou 510640, PR China
| | - Gaojin Lyu
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China, Qilu University of Technology, Jinan 250353, PR China
| | - Jun Xie
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, PR China.
| |
Collapse
|
29
|
de Assis T, Huang S, Driemeier CE, Donohoe BS, Kim C, Kim SH, Gonzalez R, Jameel H, Park S. Toward an understanding of the increase in enzymatic hydrolysis by mechanical refining. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:289. [PMID: 30386426 PMCID: PMC6201573 DOI: 10.1186/s13068-018-1289-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/09/2018] [Indexed: 05/11/2023]
Abstract
BACKGROUND Mechanical refining is a low-capital and well-established technology used in pulp and paper industry to improve fiber bonding for product strength. Refining can also be applied in a biorefinery context to overcome the recalcitrance of pretreated biomass by opening up the biomass structure and modifying substrate properties (e.g., morphology, particle size, porosity, crystallinity), which increases enzyme accessibility to substrate and improves carbohydrate conversion. Although several characterization methods have been used to identify the changes in substrate properties, there is no systematic approach to evaluate the extent of fiber cell wall disruption and what physical properties can explain the improvement in enzymatic digestibility when pretreated lignocellulosic biomass is mechanically refined. This is because the fiber cell wall is complex across multiple scales, including the molecular scale, nano- and meso-scale (microfibril), and microscale (tissue level). A combination of advanced characterization tools is used in this study to better understand the effect of mechanical refining on the meso-scale microfibril assembly and the relationship between those meso-scale modifications and enzymatic hydrolysis. RESULTS Enzymatic conversion of autohydrolysis sugarcane bagasse was improved from 69.6 to 77.2% (11% relative increase) after applying mechanical refining and an increase in enzymatic digestibility is observed with an increase in refining intensity. Based on a combination of advanced characterizations employed in this study, it was found that the refining action caused fiber size reduction, internal delamination, and increase in pores and swellability. CONCLUSIONS A higher level of delamination and higher increase in porosity, analyzed by TEM and DSC, were clearly demonstrated, which explain the faster digestibility rate during the first 72 h of enzymatic hydrolysis for disc-refined samples when compared to the PFI-refined samples. In addition, an increased inter-fibrillar distance between cellulose microfibrils at the nano-meso-scale was also revealed by SFG analysis, while no evidence was found for a change in crystalline structure by XRD and solid-state NMR analysis.
Collapse
Affiliation(s)
- Tiago de Assis
- Department of Forest Biomaterials, College of Natural Reseources, NC State University, Raleigh, NC USA
| | - Shixin Huang
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA USA
| | - Carlos Eduardo Driemeier
- Brazilian Bioethanol Science and Technology Laboratory (CTBE), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP Brazil
| | - Bryon S. Donohoe
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO USA
| | - Chaehoon Kim
- Department of Forest Biomaterials, College of Natural Reseources, NC State University, Raleigh, NC USA
| | - Seong H. Kim
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA USA
| | - Ronalds Gonzalez
- Department of Forest Biomaterials, College of Natural Reseources, NC State University, Raleigh, NC USA
| | - Hasan Jameel
- Department of Forest Biomaterials, College of Natural Reseources, NC State University, Raleigh, NC USA
| | - Sunkyu Park
- Department of Forest Biomaterials, College of Natural Reseources, NC State University, Raleigh, NC USA
| |
Collapse
|
30
|
Comparison of One-Stage Batch and Fed-Batch Enzymatic Hydrolysis of Pretreated Hardwood for the Production of Biosugar. Appl Biochem Biotechnol 2017; 184:1441-1452. [PMID: 29064030 DOI: 10.1007/s12010-017-2633-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 10/13/2017] [Indexed: 10/18/2022]
Abstract
Fed-batch method has shown a great promise in debottlenecking the high-solid enzymatic hydrolysis for the commercialization of cellulosic biosugar conversion for biofuel/biochemical production. To further improve enzymatic hydrolysis efficiency at high solid loading, fed-batch methods of green liquor-pretreated hardwood were performed to evaluate their effects on sugar recovery by comparing with one-stage batch method in this study. Among all the explored conditions, the fed-batch at 15% consistency gave higher sugar recovery on green liquor-pretreated hardwood compared to that of one-stage batch. By using general linear model analysis, the percentage of enzymatic sugar recovery in fed-batch consistency method (increasing consistency from the initial 10.7 to 15% at intervals of 24 and 48 h) was higher than that of batch hydrolysis at higher density of 15% consistency. Under that best fed-batch condition, the total sugar recovery of pretreated hardwood in enzymatic hydrolysate reached approximately 48.41% at Cellic® enzyme loading of 5 filter-paper unit (FPU)/g and 58.83% at Cellic® enzyme loading of 10 FPU/g with a hydrolysis time of 96 h.
Collapse
|
31
|
Narron RH, Han Q, Park S, Chang HM, Jameel H. Lignocentric analysis of a carbohydrate-producing lignocellulosic biorefinery process. BIORESOURCE TECHNOLOGY 2017; 241:857-867. [PMID: 28629103 DOI: 10.1016/j.biortech.2017.05.207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 05/30/2017] [Accepted: 05/31/2017] [Indexed: 05/27/2023]
Abstract
A biologically-based lignocellulosic biorefinery process for obtaining carbohydrates from raw biomass was investigated across six diverse biomasses (three hardwoods & three nonwoods) for the purpose of decoding lignin's influence on sugar production. Acknowledging that lignin could positively alter the economics of an entire process if valorized appropriately, we sought to correlate the chemical properties of lignin within the process to the traditional metrics associated with carbohydrate production-cellulolytic digestibility and total sugar recovery. Based on raw carbohydrate, enzymatic recovery ranged from 40 to 64% w/w and total recovery ranged from 70 to 87% w/w. Using nitrobenzene oxidation to quantify non-condensed lignin structures, it was found that raw hardwoods bearing increasing non-condensed S/V ratios (2.5-5.1) render increasing total carbohydrate recovery from hardwood biomasses. This finding indicates that the chemical structure of hardwood lignin influences the investigated biorefinery process' ability to generate carbohydrates from a given raw hardwood feedstock.
Collapse
Affiliation(s)
- Robert H Narron
- Department of Forest Biomaterials, North Carolina State University, 2820 Faucette Dr, Raleigh 27607, NC, United States
| | - Qiang Han
- Department of Forest Biomaterials, North Carolina State University, 2820 Faucette Dr, Raleigh 27607, NC, United States
| | - Sunkyu Park
- Department of Forest Biomaterials, North Carolina State University, 2820 Faucette Dr, Raleigh 27607, NC, United States
| | - Hou-Min Chang
- Department of Forest Biomaterials, North Carolina State University, 2820 Faucette Dr, Raleigh 27607, NC, United States
| | - Hasan Jameel
- Department of Forest Biomaterials, North Carolina State University, 2820 Faucette Dr, Raleigh 27607, NC, United States.
| |
Collapse
|
32
|
Enhanced Production of Bioethanol by Fermentation of Autohydrolyzed and C4mimOAc-Treated Sugarcane Bagasse Employing Various Yeast Strains. ENERGIES 2017. [DOI: 10.3390/en10081207] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
33
|
Relations Between Moso Bamboo Surface Properties Pretreated by Kraft Cooking and Dilute Acid with Enzymatic Digestibility. Appl Biochem Biotechnol 2017; 183:1526-1538. [DOI: 10.1007/s12010-017-2520-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 05/19/2017] [Indexed: 10/19/2022]
|
34
|
Birhade S, Pednekar M, Sagwal S, Odaneth A, Lali A. Preparation of cellulase concoction using differential adsorption phenomenon. Prep Biochem Biotechnol 2017; 47:520-529. [PMID: 28045609 DOI: 10.1080/10826068.2016.1275009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Controlled depolymerization of cellulose is essential for the production of valuable cellooligosaccharides and cellobiose from lignocellulosic biomass. However, enzymatic cellulose hydrolysis involves multiple synergistically acting enzymes, making difficult to control the depolymerization process and generate desired product. This work exploits the varying adsorption properties of the cellulase components to the cellulosic substrate and aims to control the enzyme activity. Cellulase adsorption was favored on pretreated cellulosic biomass as compared to synthetic cellulose. Preferential adsorption of exocellulases was observed over endocellulase, while β-glucosidases remained unadsorbed. Adsorbed enzyme fraction with bound exocellulases when used for hydrolysis generated cellobiose predominantly, while the unadsorbed enzymes in the liquid fraction produced cellooligosaccharides majorly, owing to its high endocellulases activity. Thus, the differential adsorption phenomenon of the cellulase components can be used for the controlling cellulose hydrolysis for the production of an array of sugars.
Collapse
Affiliation(s)
- Sachinkumar Birhade
- a DBT-ICT Centre of Energy Biosciences , Institute of Chemical Technology, Nathalal Parikh Marg, Matunga , Mumbai , Maharashtra , India
| | - Mukesh Pednekar
- a DBT-ICT Centre of Energy Biosciences , Institute of Chemical Technology, Nathalal Parikh Marg, Matunga , Mumbai , Maharashtra , India
| | - Shilpa Sagwal
- a DBT-ICT Centre of Energy Biosciences , Institute of Chemical Technology, Nathalal Parikh Marg, Matunga , Mumbai , Maharashtra , India
| | - Annamma Odaneth
- a DBT-ICT Centre of Energy Biosciences , Institute of Chemical Technology, Nathalal Parikh Marg, Matunga , Mumbai , Maharashtra , India
| | - Arvind Lali
- a DBT-ICT Centre of Energy Biosciences , Institute of Chemical Technology, Nathalal Parikh Marg, Matunga , Mumbai , Maharashtra , India
| |
Collapse
|
35
|
Machado ADS, Ferraz A. Biological pretreatment of sugarcane bagasse with basidiomycetes producing varied patterns of biodegradation. BIORESOURCE TECHNOLOGY 2017; 225:17-22. [PMID: 27875764 DOI: 10.1016/j.biortech.2016.11.053] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/11/2016] [Accepted: 11/12/2016] [Indexed: 05/06/2023]
Abstract
This work evaluated sugarcane bagasse pretreatment with wood-decay fungi, producing varied patterns of biodegradation. The overall mass balance of sugars released after pretreatment and enzymatic hydrolysis indicated that a selective white-rot was necessary to provide glucose yields similar to the ones observed from leading physico-chemical pretreatment technologies. The selective white-rot Ceriporiopsis subvermispora was selective for lignin degradation in the lignocellulosic material, preserved most of the glucan fraction, and increased the cellulose digestibility of biotreated material. Glucose mass balances indicated that of the potential glucose of untreated bagasse, 47% was recovered as sugar-rich syrup after C. subvermispora biotreatment for 60days followed by enzymatic digestion of the pretreated material.
Collapse
Affiliation(s)
- Angela da Silva Machado
- Departamento de Biotecnologia, Escola de Engenharia de Lorena, Universidade de São Paulo, 12610-820 Lorena, SP, Brazil
| | - André Ferraz
- Departamento de Biotecnologia, Escola de Engenharia de Lorena, Universidade de São Paulo, 12610-820 Lorena, SP, Brazil.
| |
Collapse
|
36
|
Jeong H, Jang SK, Hong CY, Kim SH, Lee SY, Lee SM, Choi JW, Choi IG. Levulinic acid production by two-step acid-catalyzed treatment of Quercus mongolica using dilute sulfuric acid. BIORESOURCE TECHNOLOGY 2017; 225:183-190. [PMID: 27889477 DOI: 10.1016/j.biortech.2016.11.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/14/2016] [Accepted: 11/15/2016] [Indexed: 06/06/2023]
Abstract
The objectives of this research were to produce a levulinic acid by two-step acid-catalyzed treatment of Quercus mongolica and to investigate the effect of treatment parameter (reaction temperature range: 100-230°C; sulfuric acid (SA) concentration range: 0-2%) on the levulinic acid yield. After 1st step acid-catalyzed treatment, most of the hemicellulosic C5 sugars (15.6gg/100gbiomass) were released into the liquid hydrolysate at the reaction temperature of 150°C in 1% SA; the solid fraction, which contained 53.5% of the C6 sugars, was resistant to further loss of C6 sugars. Subsequently, 2nd step acid-catalyzed treatment of the solid fractions was performed under more severe conditions. Finally, 16.5g/100g biomass of levulinic acid was produced at the reaction temperature of 200°C in 2% SA, corresponding to a higher conversion rate than during single-step treatment.
Collapse
Affiliation(s)
- Hanseob Jeong
- Division of Wood Chemistry & Microbiology, Department of Forest Products, National Institute of Forest Science, Seoul 02455, Republic of Korea
| | - Soo-Kyeong Jang
- Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Chang-Young Hong
- Division of Wood Chemistry & Microbiology, Department of Forest Products, National Institute of Forest Science, Seoul 02455, Republic of Korea
| | - Seon-Hong Kim
- Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Su-Yeon Lee
- Division of Wood Chemistry & Microbiology, Department of Forest Products, National Institute of Forest Science, Seoul 02455, Republic of Korea
| | - Soo Min Lee
- Division of Wood Chemistry & Microbiology, Department of Forest Products, National Institute of Forest Science, Seoul 02455, Republic of Korea
| | - Joon Weon Choi
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea; Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - In-Gyu Choi
- Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea; Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea; Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
| |
Collapse
|
37
|
Hashmi M, Sun Q, Tao J, Wells T, Shah AA, Labbé N, Ragauskas AJ. Comparison of autohydrolysis and ionic liquid 1-butyl-3-methylimidazolium acetate pretreatment to enhance enzymatic hydrolysis of sugarcane bagasse. BIORESOURCE TECHNOLOGY 2017; 224:714-720. [PMID: 27864135 DOI: 10.1016/j.biortech.2016.10.089] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 10/26/2016] [Accepted: 10/30/2016] [Indexed: 06/06/2023]
Abstract
The aim of this work was to evaluate the efficiency of an ionic liquid (IL) 1-butyl-3-methylimidazolium acetate ([C4mim][OAc]) pretreatment (110°C for 30min) in comparison to high severity autohydrolysis pretreatment in terms of delignification, cellulose crystallinity and enzymatic digestibility. The increase in severity of autohydrolysis pretreatment had positive effect on glucan digestibility, but was limited by the crystallinity of cellulose. [C4mim][OAc] pretreated sugarcane bagasse exhibited a substantial decrease in lignin content, reduced cellulose crystallinity, and enhanced glucan and xylan digestibility. Glucan and xylan digestibility was determined as 97.4% and 98.6% from [C4mim][OAc] pretreated bagasse, and 62.1% and 57.5% from the bagasse autohydrolyzed at 205°C for 6min, respectively. The results indicated the improved digestibility and hydrolysis rates after [C4mim][OAc] pretreatment when compared against a comparable autohydrolyzed biomass.
Collapse
Affiliation(s)
- Muzna Hashmi
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Qining Sun
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA
| | - Jingming Tao
- Center of Renewable Carbon, The University of Tennessee, Knoxville, TN, USA
| | - Tyrone Wells
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA
| | - Aamer Ali Shah
- Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Nicole Labbé
- Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA; Center of Renewable Carbon, The University of Tennessee, Knoxville, TN, USA
| | - Arthur J Ragauskas
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA; Department of Forestry, Wildlife and Fisheries, The University of Tennessee, Knoxville, TN 37996-2200, USA; Center of Renewable Carbon, The University of Tennessee, Knoxville, TN, USA; Joint Institute for Biological Sciences, Biosciences Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA.
| |
Collapse
|
38
|
David GF, Perez VH, Rodriguez Justo O, Garcia-Perez M. Effect of acid additives on sugarcane bagasse pyrolysis: Production of high yields of sugars. BIORESOURCE TECHNOLOGY 2017; 223:74-83. [PMID: 27788430 DOI: 10.1016/j.biortech.2016.10.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 10/17/2016] [Accepted: 10/18/2016] [Indexed: 06/06/2023]
Abstract
The aim of this work was to improve sugarcane bagasse thermochemical conversion to pyrolytic sugars production, particularly to levoglucosan. The experiments were carried out evaluating the effect of acid washing with HNO3 (0.1wt.%) followed by H2SO4 addition (0.1, 0.2 and 0.3wt.%) at pyrolysis temperatures of 350, 400, 450, 500, 550 and 600°C was studied by Py-GC/MS. The experimental results showed that HNO3 washing, followed by H2SO4 concentration of 0.2wt.% at 350°C resulted in an increase in levoglucosan yield between 5 and 7 times the yield obtained when the raw bagasse was processed. Thus, these results are very attractive to improve pyrolytic sugars production in sugarcane bagasse by previously acid treatment to pyrolysis technology.
Collapse
Affiliation(s)
- Geraldo Ferreira David
- Processes Engineering Sector, State University of Northern of Rio de Janeiro, Brazil; Biological System Engineering, Washington State University, Pullman, WA, USA
| | - Victor Haber Perez
- Processes Engineering Sector, State University of Northern of Rio de Janeiro, Brazil; Biological System Engineering, Washington State University, Pullman, WA, USA.
| | - Oselys Rodriguez Justo
- Biological System Engineering, Washington State University, Pullman, WA, USA; Estácio de Sá University, Campos dos Goytacazes. RJ, Brazil
| | - Manuel Garcia-Perez
- Biological System Engineering, Washington State University, Pullman, WA, USA
| |
Collapse
|
39
|
Huang C, Jeuck B, Du J, Yong Q, Chang HM, Jameel H, Phillips R. Novel process for the coproduction of xylo-oligosaccharides, fermentable sugars, and lignosulfonates from hardwood. BIORESOURCE TECHNOLOGY 2016; 219:600-607. [PMID: 27543951 DOI: 10.1016/j.biortech.2016.08.051] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/05/2016] [Accepted: 08/06/2016] [Indexed: 06/06/2023]
Abstract
Many biorefineries have not been commercialized due to poor economic returns from final products. In this work, a novel process has been developed to coproduce valuable sugars, xylo-oligosaccharides, and lignosulfonates from hardwood. The modified process includes a mild autohydrolysis pretreatment, which enables for the recovery of the xylo-oligosaccharides in auto-hydrolysate. Following enzymatic hydrolysis, the residue is sulfomethylated to produce lignosulfonates. Recycling the sulfomethylation residues increased both the glucan recovery and lignosulfonate production. The glucose recovery was increased from 81.7% to 87.9%. Steady state simulation using 100g of hardwood produced 46.7g sugars, 5.9g xylo-oligosaccharides, and 25.7g lignosulfonates, which were significantly higher than that produced from the no-recycling process with 39.1g sugars, 5.9g xylo-oligosaccharides, and 15.0g lignosulfonates. The results indicate that this novel biorefinery process can improve the production of fermentable sugars and lignosulfonate from hardwood as compared to a conventional biorefinery process.
Collapse
Affiliation(s)
- Caoxing Huang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China; Department of Forestry Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, NC 27695-8005, USA
| | - Ben Jeuck
- Department of Forestry Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, NC 27695-8005, USA
| | - Jing Du
- Department of Forestry Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, NC 27695-8005, USA
| | - Qiang Yong
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, China
| | - Hou-Min Chang
- Department of Forestry Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, NC 27695-8005, USA
| | - Hasan Jameel
- Department of Forestry Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, NC 27695-8005, USA.
| | - Richard Phillips
- Department of Forestry Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, NC 27695-8005, USA
| |
Collapse
|
40
|
Sadhukhan J, Ng KS, Martinez-Hernandez E. Novel integrated mechanical biological chemical treatment (MBCT) systems for the production of levulinic acid from fraction of municipal solid waste: A comprehensive techno-economic analysis. BIORESOURCE TECHNOLOGY 2016; 215:131-143. [PMID: 27085988 DOI: 10.1016/j.biortech.2016.04.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 05/12/2023]
Abstract
This paper, for the first time, reports integrated conceptual MBCT/biorefinery systems for unlocking the value of organics in municipal solid waste (MSW) through the production of levulinic acid (LA by 5wt%) that increases the economic margin by 110-150%. After mechanical separation recovering recyclables, metals (iron, aluminium, copper) and refuse derived fuel (RDF), lignocelluloses from remaining MSW are extracted by supercritical-water for chemical valorisation, comprising hydrolysis in 2wt% dilute H2SO4 catalyst producing LA, furfural, formic acid (FA), via C5/C6 sugar extraction, in plug flow (210-230°C, 25bar, 12s) and continuous stirred tank (195-215°C, 14bar, 20min) reactors; char separation and LA extraction/purification by methyl isobutyl ketone solvent; acid/solvent and by-product recovery. The by-product and pulping effluents are anaerobically digested into biogas and fertiliser. Produced biogas (6.4MWh/t), RDF (5.4MWh/t), char (4.5MWh/t) are combusted, heat recovered into steam generation in boiler (efficiency: 80%); on-site heat/steam demand is met; balance of steam is expanded into electricity in steam turbines (efficiency: 35%).
Collapse
Affiliation(s)
- Jhuma Sadhukhan
- Centre for Environmental Strategy, University of Surrey, GU2 7XH, UK.
| | - Kok Siew Ng
- Centre for Environmental Strategy, University of Surrey, GU2 7XH, UK
| | | |
Collapse
|
41
|
He YC, Zhang DP, Di JH, Wu YQ, Tao ZC, Liu F, Zhang ZJ, Chong GG, Ding Y, Ma CL. Effective pretreatment of sugarcane bagasse with combination pretreatment and its hydrolyzates as reaction media for the biosynthesis of ethyl (S)-4-chloro-3-hydroxybutanoate by whole cells of E. coli CCZU-K14. BIORESOURCE TECHNOLOGY 2016; 211:720-726. [PMID: 27060248 DOI: 10.1016/j.biortech.2016.03.150] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 03/26/2016] [Accepted: 03/28/2016] [Indexed: 06/05/2023]
Abstract
In this study, sugarcane bagasse (SB) was pretreated with combination pretreatment (e.g., sequential KOH extraction and ionic liquid soaking, sequential KOH extraction and Fenton soaking, or sequential KOH extraction and glycerol soaking). After the enzymatic hydrolysis of pretreated SBs, it was found that all these three concentrated hydrolyzates could be used for the asymmetric bioreduction of ethyl 4-chloro-3-oxobutanoate (COBE) into ethyl (S)-4-chloro-3-hydroxybutanoate [(S)-CHBE]. Compared with glucose, arabinose and cellobiose couldn't promote the initial reaction rate, and xylose could increase the intracellular NADH content. Moreover, it was the first report that hydrolyzates could be used for the effective biosynthesis of (S)-CHBE (∼500g/L; 98.0% yield) from 3000 COBE by whole cells of Escherichia coli CCZU-K14 in the presence of β-CD (0.4mol β-CD/mol COBE), l-glutamine (200mM) and glycine (500mM). In conclusion, it is a new alternative to utilize bioresource for the synthesis of key chiral intermediate (S)-CHBE.
Collapse
Affiliation(s)
- Yu-Cai He
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China; State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China; Bioproducts, Sciences and Engineering Laboratory, Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA.
| | - Dan-Ping Zhang
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| | - Jun-Hua Di
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| | - Yin-Qi Wu
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| | - Zhi-Cheng Tao
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| | - Feng Liu
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| | - Zhi-Jun Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Gang-Gang Chong
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| | - Yun Ding
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| | - Cui-Luan Ma
- Laboratory of Biochemical Engineering, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, China
| |
Collapse
|
42
|
Neves PV, Pitarelo AP, Ramos LP. Production of cellulosic ethanol from sugarcane bagasse by steam explosion: Effect of extractives content, acid catalysis and different fermentation technologies. BIORESOURCE TECHNOLOGY 2016; 208:184-194. [PMID: 26943936 DOI: 10.1016/j.biortech.2016.02.085] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 06/05/2023]
Abstract
The production of cellulosic ethanol was carried out using samples of native (NCB) and ethanol-extracted (EECB) sugarcane bagasse. Autohydrolysis (AH) exhibited the best glucose recovery from both samples, compared to the use of both H3PO4 and H2SO4 catalysis at the same pretreatment time and temperature. All water-insoluble steam-exploded materials (SEB-WI) resulted in high glucose yields by enzymatic hydrolysis. SHF (separate hydrolysis and fermentation) gave ethanol yields higher than those obtained by SSF (simultaneous hydrolysis and fermentation) and pSSF (pre-hydrolysis followed by SSF). For instance, AH gave 25, 18 and 16 g L(-1) of ethanol by SHF, SSF and pSSF, respectively. However, when the total processing time was taken into account, pSSF provided the best overall ethanol volumetric productivity of 0.58 g L(-1) h(-1). Also, the removal of ethanol-extractable materials from cane bagasse had no influence on the cellulosic ethanol production of SEB-WI, regardless of the fermentation strategy used for conversion.
Collapse
Affiliation(s)
- P V Neves
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil
| | - A P Pitarelo
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil; Sugarcane Technology Center (CTC), Piracicaba, SP, Brazil
| | - L P Ramos
- Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil.
| |
Collapse
|
43
|
Liu W, Wang B, Hou Q, Chen W, Wu M. Effects of fibrillation on the wood fibers' enzymatic hydrolysis enhanced by mechanical refining. BIORESOURCE TECHNOLOGY 2016; 206:99-103. [PMID: 26851576 DOI: 10.1016/j.biortech.2016.01.074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/18/2016] [Accepted: 01/19/2016] [Indexed: 05/25/2023]
Abstract
The hardwood bleached kraft pulp (HBKP) fibers were pretreated by PFI mill to obtain the substrates, the effects of fibrillation on HBKP fibers' enzymatic hydrolysis was studied. The results showed that the enzymatic hydrolysis efficiency was enhanced obviously by mechanical refining. The mechanical refining alterated the fibers' characteristics such as fibrillation degree, specific surface area, swelling ability, crystallinity, fiber length and fines content. All these factors correlating to the enzymatic hydrolysis were evaluated through mathematical analysis. Among these factors, the fibrillation degree has the profoundest impact on the enzymatic hydrolysis of wood fibers. Consequently, the mechanical refining aiming for a high fibrillation degree was feasible to enhance the enzymatic hydrolysis of lignocellulosic biomass.
Collapse
Affiliation(s)
- Wei Liu
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China; Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Jinan 250353, China.
| | - Bing Wang
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Qingxi Hou
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Chen
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Ming Wu
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China
| |
Collapse
|
44
|
Prats Mateu B, Hauser MT, Heredia A, Gierlinger N. Waterproofing in Arabidopsis: Following Phenolics and Lipids In situ by Confocal Raman Microscopy. Front Chem 2016; 4:10. [PMID: 26973831 PMCID: PMC4770935 DOI: 10.3389/fchem.2016.00010] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/11/2016] [Indexed: 12/28/2022] Open
Abstract
Waterproofing of the aerial organs of plants imposed a big evolutionary step during the colonization of the terrestrial environment. The main plant polymers responsible of water repelling are lipids and lignin, which play also important roles in the protection against biotic/abiotic stresses, regulation of flux of gases and solutes, and mechanical stability against negative pressure, among others. While the lipids, non-polymerized cuticular waxes together with the polymerized cutin, protect the outer surface, lignin is confined to the secondary cell wall within mechanical important tissues. In the present work a micro cross-section of the stem of Arabidopsis thaliana was used to track in situ the distribution of these non-carbohydrate polymers by Confocal Raman Microscopy. Raman hyperspectral imaging gives a molecular fingerprint of the native waterproofing tissues and cells with diffraction limited spatial resolution (~300 nm) at relatively high speed and without any tedious sample preparation. Lipids and lignified tissues as well as their effect on water content was directly visualized by integrating the 1299, 1600, and 3400 cm(-1) band, respectively. For detailed insights into compositional changes of these polymers vertex component analysis was performed on selected sample positions. Changes have been elucidated in the composition of lignin within the lignified tissues and between interfascicular fibers and xylem vessels. Hydrophobizing changes were revealed from the epidermal layer to the cuticle as well as a change in the aromatic composition within the cuticle of trichomes. To verify Raman signatures of different waterproofing polymers additionally Raman spectra of the cuticle and cutin monomer from tomato (Solanum lycopersicum) as well as aromatic model polymers (milled wood lignin and dehydrogenation polymer of coniferyl alcohol) and phenolic acids were acquired.
Collapse
Affiliation(s)
- Batirtze Prats Mateu
- Department of Material Sciences and Process Engineering, University of Natural Resources and Life SciencesVienna, Austria
| | - Marie Theres Hauser
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life SciencesVienna, Austria
| | - Antonio Heredia
- Department of Molecular Biology and Biochemistry, University of MalagaMalaga, Spain
| | - Notburga Gierlinger
- Department of Material Sciences and Process Engineering, University of Natural Resources and Life SciencesVienna, Austria
- Institute for Building Materials, Eidgenössische Technische Hochschule ZürichZürich, Switzerland
- Applied Wood Research Laboratory, Empa-Swiss Federal Laboratories for Material Testing and ResearchDübendorf, Switzerland
| |
Collapse
|
45
|
Lachos-Perez D, Martinez-Jimenez F, Rezende C, Tompsett G, Timko M, Forster-Carneiro T. Subcritical water hydrolysis of sugarcane bagasse: An approach on solid residues characterization. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2015.10.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
46
|
Kim SM, Dien BS, Singh V. Promise of combined hydrothermal/chemical and mechanical refining for pretreatment of woody and herbaceous biomass. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:97. [PMID: 27141232 PMCID: PMC4852465 DOI: 10.1186/s13068-016-0505-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 04/12/2016] [Indexed: 05/07/2023]
Abstract
Production of advanced biofuels from woody and herbaceous feedstocks is moving into commercialization. Biomass needs to be pretreated to overcome the physicochemical properties of biomass that hinder enzyme accessibility, impeding the conversion of the plant cell walls to fermentable sugars. Pretreatment also remains one of the most costly unit operations in the process and among the most critical because it is the source of chemicals that inhibit enzymes and microorganisms and largely determines enzyme loading and sugar yields. Pretreatments are categorized into hydrothermal (aqueous)/chemical, physical, and biological pretreatments, and the mechanistic details of which are briefly outlined in this review. To leverage the synergistic effects of different pretreatment methods, conducting two or more pretreatments consecutively has gained attention. Especially, combining hydrothermal/chemical pretreatment and mechanical refining, a type of physical pretreatment, has the potential to be applied to an industrial plant. Here, the effects of the combined pretreatment (combined hydrothermal/chemical pretreatment and mechanical refining) on energy consumption, physical structure, sugar yields, and enzyme dosage are summarized.
Collapse
Affiliation(s)
- Sun Min Kim
- />Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Bruce S. Dien
- />Bioenergy Research Unit, Agricultural Research Service, USDA, National Center for Agricultural Utilization Research, Peoria, IL 61604 USA
| | - Vijay Singh
- />Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| |
Collapse
|
47
|
Chandra RP, Chu Q, Hu J, Zhong N, Lin M, Lee JS, Saddler J. The influence of lignin on steam pretreatment and mechanical pulping of poplar to achieve high sugar recovery and ease of enzymatic hydrolysis. BIORESOURCE TECHNOLOGY 2016; 199:135-141. [PMID: 26391968 DOI: 10.1016/j.biortech.2015.09.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/31/2015] [Accepted: 09/01/2015] [Indexed: 05/05/2023]
Abstract
With the goal of enhancing overall carbohydrate recovery and reducing enzyme loading refiner mechanical pulping and steam pretreatment (210°C, 5 min) were used to pretreat poplar wood chips. Neutral sulphonation post-treatment indicated that, although the lignin present in the steam pretreated substrate was less reactive, the cellulose-rich, water insoluble component was more accessible to cellulases and Simons stain. This was likely due to lignin relocation as the relative surface lignin measured by X-ray photoelectron spectroscopy increased from 0.4 to 0.8. The integration of sulphite directly into steam pretreatment resulted in the solubilisation of 60% of the lignin while more than 80% of the carbohydrate present in the original substrate was recovered in the water insoluble fraction after Na2CO3 addition. More than 80% of the sugars present in the original cellulose and xylan could be recovered after 48 h using an enzyme loading of 20 mg protein/g cellulose at a 10% substrate concentration.
Collapse
Affiliation(s)
- Richard P Chandra
- Forest Products Biotechnology/Bioenergy Group, University of British Columbia, Faculty of Forestry, British Columbia, Canada
| | - QiuLu Chu
- Forest Products Biotechnology/Bioenergy Group, University of British Columbia, Faculty of Forestry, British Columbia, Canada
| | - Jinguang Hu
- Forest Products Biotechnology/Bioenergy Group, University of British Columbia, Faculty of Forestry, British Columbia, Canada
| | - Na Zhong
- Forest Products Biotechnology/Bioenergy Group, University of British Columbia, Faculty of Forestry, British Columbia, Canada
| | - Mandy Lin
- Forest Products Biotechnology/Bioenergy Group, University of British Columbia, Faculty of Forestry, British Columbia, Canada
| | - Jin-Suk Lee
- Clean Fuel Department, Korea Institute of Energy Research, Jeongeup, Jeonbuk 580-185, South Korea
| | - Jack Saddler
- Forest Products Biotechnology/Bioenergy Group, University of British Columbia, Faculty of Forestry, British Columbia, Canada
| |
Collapse
|
48
|
Pretreatment Processes for Cellulosic Ethanol Production: Processes Integration and Modeling for the Utilization of Lignocellulosics Such as Sugarcane Straw. GREEN FUELS TECHNOLOGY 2016. [DOI: 10.1007/978-3-319-30205-8_5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
|
49
|
Baêta BEL, Lima DRS, Adarme OFH, Gurgel LVA, Aquino SFD. Optimization of sugarcane bagasse autohydrolysis for methane production from hemicellulose hydrolyzates in a biorefinery concept. BIORESOURCE TECHNOLOGY 2016; 200:137-146. [PMID: 26476615 DOI: 10.1016/j.biortech.2015.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/02/2015] [Accepted: 10/03/2015] [Indexed: 06/05/2023]
Abstract
This study aimed to optimize through design of experiments, the process variables (temperature - T, time - t and solid-to-liquid ratio - SLR) for sugarcane bagasse (SB) autohydrolysis (AH) to obtain hemicellulose hydrolyzates (HH) prone to anaerobic digestion (AD) and biochemical methane production (BMP). The results indicated that severe AH conditions, which lead to maximum hemicelluloses dissolution and sugar content in the HH, were not the best for BMP, probably due to the accumulation of toxic/recalcitrant compounds (furans and lignin). Mild AH conditions (170°C, 35min and SLR=0.33) led to the highest BMP (0.79Nm(3)kg TOC(-1)), which was confirmed by the desirability tool. HH produced by AH carried out at the desired condition DC2 (178.6°C, 43.6min and SLR=0.24) showed the lowest accumulation of inhibitory compounds and volatile fatty acids (VFA) and highest BMP (1.56Nm(3)kg TOC(-1)). The modified Gompertz model best fit the experimental data and led to a maximum methane production rate (R) of 2.6mmol CH4d(-1) in the best condition.
Collapse
Affiliation(s)
- Bruno Eduardo Lôbo Baêta
- Laboratório de Química Tecnológica e Ambiental, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, s/n°, Bauxita, 35400-000 Ouro Preto, MG, Brazil.
| | - Diego Roberto Sousa Lima
- Laboratório de Química Tecnológica e Ambiental, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, s/n°, Bauxita, 35400-000 Ouro Preto, MG, Brazil
| | - Oscar Fernando Herrera Adarme
- Laboratório de Química Tecnológica e Ambiental, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, s/n°, Bauxita, 35400-000 Ouro Preto, MG, Brazil
| | - Leandro Vinícius Alves Gurgel
- Laboratório de Química Tecnológica e Ambiental, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, s/n°, Bauxita, 35400-000 Ouro Preto, MG, Brazil
| | - Sérgio Francisco de Aquino
- Laboratório de Química Tecnológica e Ambiental, Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, s/n°, Bauxita, 35400-000 Ouro Preto, MG, Brazil
| |
Collapse
|
50
|
Yu H, You Y, Lei F, Liu Z, Zhang W, Jiang J. Comparative study of alkaline hydrogen peroxide and organosolv pretreatments of sugarcane bagasse to improve the overall sugar yield. BIORESOURCE TECHNOLOGY 2015; 187:161-166. [PMID: 25846186 DOI: 10.1016/j.biortech.2015.03.123] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 05/17/2023]
Abstract
Green liquor (GL) combined with H2O2 (GL-H2O2) and green liquor (GL) combined with ethanol (GL-ethanol) were chosen for treating sugarcane bagasse. Results showed that the glucose yield (calculated from the glucose content as a percentage of the theoretical glucose available in the substrates)of sugarcane bagasse from GL-ethanol pretreatment (97.7%) was higher than that from GL-H2O2 pretreatment (41.7%) after 72h hydrolysis with 18 filter paper unit (FPU)/g-cellulose for cellulase, 27,175 cellobiase units (CBU)/g-cellulose for β-glucosidase. Furthermore, about 94.1% of xylan was converted to xylose after GL-ethanol pretreatment without additional xylanase, while the xylose yield was only 29.2% after GL-H2O2 pretreatment. Scanning electron microscopy showed that GL-ethanol pretreatment could break up the fiber severely. Moreover, GL-ethanol pretreated substrate was more accessible to cellulase and more hydrophilic than that of GL-H2O2 pretreated. Therefore, GL-ethanol pretreatment is a promising method for improving the overall sugar (glucose and xylan) yield of sugarcane bagasse.
Collapse
Affiliation(s)
- Hailong Yu
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Yanzhi You
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Fuhou Lei
- GuangXi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, China
| | - Zuguang Liu
- GuangXi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, China
| | - Weiming Zhang
- Nanjing Institute for the Comprehensive Utilization of Wild Plant, Nanjing 210042, China
| | - Jianxin Jiang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| |
Collapse
|