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Saroj P, P M, Narasimhulu K. Enhanced reducing sugar production by blending hydrolytic enzymes from Aspergillus fumigatus to improve sugarcane bagasse hydrolysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:48085-48102. [PMID: 39017871 DOI: 10.1007/s11356-024-34246-1] [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: 09/07/2023] [Accepted: 07/02/2024] [Indexed: 07/18/2024]
Abstract
Biomass pretreatment for the production of second-generation (2G) ethanol and biochemical products is a challenging process. The present study investigated the synergistic efficiency of purified carboxymethyl cellulase (CMCase), β-glucosidase, and xylanase from Aspergillus fumigatus JCM 10253 in the hydrolysis of alkaline-pretreated sugarcane bagasse (SCB). The saccharification of pretreated SCB was optimised using a combination of CMCase and β-glucosidase (C + β; 1:1) and addition of xylanase (C + β + xyl; 1:1:1). Independent and dependent variables influencing enzymatic hydrolysis were investigated using response surface methodology (RSM). Hydrolysis using purified CMCase and β-glucosidase achieved yields of 18.72 mg/mL glucose and 6.98 mg/mL xylose. Incorporation of xylanase in saccharification increased the titres of glucose (22.83 mg/mL) and xylose (9.54 mg/mL). Furthermore, characterisation of SCB biomass by scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy respectively confirmed efficient structural disintegration and revealed the degree of crystallinity and spectral characteristics. Therefore, depolymerisation of lignin to produce high-value chemicals is essential for sustainable and competitive biorefinery development.
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Affiliation(s)
- Paramjeet Saroj
- Department of Biotechnology, National Institute of Technology Warangal, Hanamkonda, 506004, Telangana, India.
| | - Manasa P
- Department of Biotechnology, National Institute of Technology Andhra Pradesh, Tadepalligudem, 534101, India
| | - Korrapati Narasimhulu
- Department of Biotechnology, National Institute of Technology Warangal, Hanamkonda, 506004, Telangana, India
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2
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de Araujo Ribeiro GC, de Assis SA. β-glucosidases from Saccharomyces cerevisiae: production, protein precipitation, characterization, and application in the enzymatic hydrolysis of delignified sugarcane bagasse. Prep Biochem Biotechnol 2024; 54:317-327. [PMID: 38178713 DOI: 10.1080/10826068.2023.2238290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
β-glucosidase is an essential enzyme for the enzymatic hydrolysis of lignocellulosic biomass, as it catalyzes the final stage of cellulose breakdown, releasing glucose. This paper aims to produce β-glucosidase from Saccharomyces cerevisiae and evaluate the enzymatic degradation of delignified sugarcane bagasse. S. cerevisiae was grown in yeast peptone dextrose medium. Partial purification of the enzyme was achieved through precipitating proteins with ethanol, and the optimal activity was measured by optimizing pH and temperature. The effects of ions, glucose tolerance, and heat treatment were evaluated. Delignified sugarcane bagasse was hydrolyzed by the enzyme. β-glucosidase showed a specific activity of 14.0712 ± 0.0207 U mg-1. Partial purification showed 1.22-fold purification. The optimum pH and temperature were 6.24 and 54 °C, respectively. β-glucosidase showed tolerance to glucose, with a relative activity of 71.27 ± 0.16%. Thermostability showed a relative activity of 58.84 ± 0.91% at 90 °C. The hydrolysis of delignified sugarcane bagasse showed a conversion rate of 87.97 ± 0.10% in the presence of Zn2+, an ion that promoted the highest increase in enzymatic activity. S. cerevisiae produced an extracellular β-glucosidase with good stability at pH and temperatures conventionally applied in the hydrolysis of lignocellulosic biomass, showing viability for industrial application.
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Fan M, Liu Z, Xie J, Chen Y. An optimum biomass fractionation strategy into maximum carbohydrates conversion and lignin valorization from poplar. BIORESOURCE TECHNOLOGY 2023; 385:129344. [PMID: 37369319 DOI: 10.1016/j.biortech.2023.129344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023]
Abstract
Appropriate fractionation of lignocellulosic biomass into useable forms is a key challenge to achieving an economic bioethanol production. In the present study, four different fractionation strategies of hydrothermal-, NaOH-, ethanol-, and NaOH catalyzed ethanol pretreatment were investigated to compare their abilities of cellulose conversion. Results showed that NaOH catalyzed ethanol pretreatment showed a rather high extent of delignification of 85.92%, which also enhanced the retention of cellulose (92.56%) and hemicellulose (76.57%); while other pretreatments tended to produce cellulose fraction which was insufficient to achieve the whole component utilization. After simultaneous saccharification and fermentation at high solids loading, synergistic maximization of xylose (42.47 g/L) and ethanol (85.74 g/L) output was achieved via alkaline ethanol pretreatment. Lignin characterization information showed that alkaline ethanol pretreatment facilitates the cleavage of β-O-4 linkage and further converts into arylglycerol. Moreover, less condensed substructure units with high processing activity were also generated in S- and G- lignin.
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Affiliation(s)
- Meishan Fan
- Institute of Biomass Engineering, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, PR China; Henry Fok School of Biology & Agriculture, Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512005, PR China
| | - Zhu Liu
- Henry Fok School of Biology & Agriculture, Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512005, PR China
| | - Jun Xie
- Institute of Biomass Engineering, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, PR China.
| | - Yong Chen
- Institute of Biomass Engineering, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, PR China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences (CAS), Guangzhou 510640, PR China
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Alharbi K, Hafez EM, Omara AED, Nehela Y. Composted Bagasse and/or Cyanobacteria-Based Bio-Stimulants Maintain Barley Growth and Productivity under Salinity Stress. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091827. [PMID: 37176885 PMCID: PMC10181477 DOI: 10.3390/plants12091827] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/16/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023]
Abstract
Soil and water salinity are among the most fatal environmental challenges that threaten agricultural production worldwide. This study investigated the potential impact(s) of soil amendment using composted bagasse and/or foliar application of cyanobacteria-based bio-stimulants (Arthrospira platensis, also known as Spirulina platensis) to combat the harmful effect(s) of using saline water to irrigate barley plants grown in salt-affected soils during 2020/2021 and 2021/2022. Briefly, the dual application of composted bagasse and cyanobacteria-based bio-stimulants significantly improved the soil properties, buffered the exchangeable sodium percentage (ESP), and enhanced the activity of soil enzymes (urease and dehydrogenase). Moreover, both treatments and their combination notably augmented the water relations of barley plants under salinity stress. All treatments significantly decreased stomatal conductance (gs) and relative water content (RWC) but increased the electrolyte leakage (EL) and balanced the contents of Na+ and K+, and their ratio (K+/Na+) of barley leaves under salinity stress compared with those irrigated with fresh water during the 2020/2021 and 2021/2022 seasons. Additionally, composted bagasse and cyanobacteria-based bio-stimulants diminished the oxidative stress in barley plants under salinity stress by improving the activity of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and peroxidase (POX). Consequently, the combination of composted bagasse and cyanobacteria extract resulted in superior yield-related traits such as spike length, number of grains per spike, 1000-grain weight, grain yield, straw yield, and harvest index. Collectively, our findings suggest that the integrative application of composted bagasse and cyanobacteria is promising as a sustainable environmental strategiy that can be used to improve soil properties, plant growth, and productivity of not only barley plants but also maybe other cereal crops irrigated with saline water in salt-affected soil.
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Affiliation(s)
- Khadiga Alharbi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Emad M Hafez
- Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Alaa El-Dein Omara
- Department of Microbiology, Soils, Water Environment Research Institute, Agricultural Research Center, Giza 12112, Egypt
| | - Yasser Nehela
- Department of Agricultural Botany, Faculty of Agriculture, Tanta University, Tanta 31527, Egypt
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Hamid A, Zafar A, Latif S, Peng L, Wang Y, Liaqat I, Afzal MS, ul-Haq I, Aftab MN. Enzymatic hydrolysis of low temperature alkali pretreated wheat straw using immobilized β-xylanase nanoparticles. RSC Adv 2023; 13:1434-1445. [PMID: 36686938 PMCID: PMC9814908 DOI: 10.1039/d2ra07231a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/15/2022] [Indexed: 01/07/2023] Open
Abstract
A low temperature alkali (LTA) pretreatment method was used to treat wheat straw. In order to obtain good results, different factors like temperature, incubation time, NaOH concentration and solid to liquid ratio for the pretreatment process were optimized. Wheat straw is a potential biomass for the production of monomeric sugars. The objective of the current study was to observe the saccharification (%) of wheat straw with immobilized magnetic nanoparticles (MNPs). For this purpose, immobilized MNPs of purified β-xylanase enzyme was used for hydrolysis of pretreated wheat straw. Wheat straw was pretreated using the LTA method and analyzed by SEM analysis. After completion of the saccharification process, saccharification% was calculated by using a DNS method. Scanning electron micrographs revealed that the hemicellulose, cellulose and lignin were partially removed and changes in the cell wall structure of the wheat straw had caused it to become deformed, increasing the specific surface area, so more fibers of the wheat straw were exposed to the immobilized β-xylanase enzyme after alkali pretreatment. The maximum saccharification potential of wheat straw was about 20.61% obtained after pretreatment with optimized conditions of 6% NaOH, 1/10 S/L, 30 °C and 72 hours. Our results indicate the reusability of the β-xylanase enzyme immobilized magnetic nanoparticles and showed a 15% residual activity after the 11th cycle. HPLC analysis of the enzyme-hydrolyzed filtrate also revealed the presence of sugars like xylose, arabinose, xylobiose, xylotriose and xylotetrose. The time duration of the pretreatment has an important effect on thermal energy consumption for the low-temperature alkali method.
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Affiliation(s)
- Attia Hamid
- Institute of Industrial Biotechnology, Govt. College UniversityLahore 54000Pakistan+924299213341+923444704190
| | - Asma Zafar
- Faculty of Science and Technology, University of Central PunjabLahorePakistan
| | | | - Liangcai Peng
- Biomass and Bioenergy Research Center, Huazhong Agriculture UniversityWuhanChina
| | - Yanting Wang
- Biomass and Bioenergy Research Center, Huazhong Agriculture UniversityWuhanChina
| | - Iram Liaqat
- Microbiology Lab, Department of Zoology, Government College UniversityLahorePakistan
| | - Muhammad Sohail Afzal
- Department of Life Sciences, School of Science, University of Management and Technology (UMT)LahorePakistan
| | - Ikram ul-Haq
- Institute of Industrial Biotechnology, Govt. College UniversityLahore 54000Pakistan+924299213341+923444704190
| | - Muhammad Nauman Aftab
- Institute of Industrial Biotechnology, Govt. College UniversityLahore 54000Pakistan+924299213341+923444704190
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Cousin E, Namhaed K, Pérès Y, Cognet P, Delmas M, Hermansyah H, Gozan M, Alaba PA, Aroua MK. Towards efficient and greener processes for furfural production from biomass: A review of the recent trends. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 847:157599. [PMID: 35901885 DOI: 10.1016/j.scitotenv.2022.157599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
As mentioned in several recent reviews, biomass-based furfural is attracting increasing interest as a feasible alternative for the synthesis of a wide range of non-petroleum-derived compounds. However, the lack of environmentally friendly, cost-effective, and sustainable industrial procedures is still evident. This review describes the chemical and biological routes for furfural production. The mechanisms proposed for the chemical transformation of xylose to furfural are detailed, as are the current advances in the manufacture of furfural from biomass. The main goal is to overview the different ways of improving the furfural synthesis process. A pretreatment process, particularly chemical and physico-chemical, enhances the digestibility of biomass, leading to the production of >70 % of available sugars for the production of valuable products. The combination of heterogeneous (zeolite and polymeric solid) catalyst and biphasic solvent system (water/GVL and water/CPME) is regarded as an attractive approach, affording >75 % furfural yield for over 80 % of selectivity with the possibility of catalyst reuse. Microwave heating as an activation technique reduces reaction time at least tenfold, making the process more sustainable. The state of the art in industrial processes is also discussed. It shows that, when sulfuric acid is used, the furfural yields do not exceed 55 % for temperatures close to 180 °C. However, the MTC process recently achieved an 83 % yield by continuously removing furfural from the liquid phase. Finally, the CIMV process, using a formic acid/acetic acid mixture, has been developed. The economic aspects of furfural production are then addressed. Future research will be needed to investigate scaling-up and biological techniques that produce acceptable yields and productivities to become commercially viable and competitive in furfural production from biomass.
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Affiliation(s)
- Elsa Cousin
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Kritsana Namhaed
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Yolande Pérès
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Patrick Cognet
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Michel Delmas
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Heri Hermansyah
- Biorefinery Lab, Bioprocess Engineering Program, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia.
| | - Misri Gozan
- Biorefinery Lab, Bioprocess Engineering Program, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia.
| | - Peter Adeniyi Alaba
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Mohamed Kheireddine Aroua
- Centre for Carbon Dioxide Capture and Utilization (CCDCU), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500 Petaling Jaya, Malaysia; Department of Engineering, Lancaster University, Lancaster LA1 4YW, United Kingdom; Sunway Materials Smart Science & Engineering Research Cluster (SMS2E), Sunway University, No. 5 Jalan Universiti, Bandar Sunway, 47500 Petaling Jaya, Selangor, Malaysia
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Reena R, Alphy MP, Reshmy R, Thomas D, Madhavan A, Chaturvedi P, Pugazhendhi A, Awasthi MK, Ruiz H, Kumar V, Sindhu R, Binod P. Sustainable valorization of sugarcane residues: Efficient deconstruction strategies for fuels and chemicals production. BIORESOURCE TECHNOLOGY 2022; 361:127759. [PMID: 35961508 DOI: 10.1016/j.biortech.2022.127759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
The global climate crisis and the ongoing increase in fossil-based fuels have led to an alternative solution of using biomass for fuel production. Sugarcane bagasse (SCB) is an agricultural residue with a global production of more than 100 million metric tons and it has various applications in a biorefinery concept. This review brings forth the composition, life cycle assessment, and various pretreatments for the deconstruction techniques of SCB for the production of valuable products. The ongoing research in the production of biofuels, biogas, and electricity utilizing the bagasse was elucidated. SCB is used in the production of carboxymethyl cellulose, pigment, lactic acid, levulinic acid, and xylooligosaccharides and it has prospective in meeting the demand for global energy and environmental sustainability.
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Affiliation(s)
- Rooben Reena
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Maria Paul Alphy
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - R Reshmy
- Department of Science and Humanities, Providence College of Engineering, Chengannur 689 122, Kerala, India
| | - Deepa Thomas
- Post Graduate and Research Department of Chemistry, Bishop Moore College, Mavelikara 690 110, Kerala, India
| | - Aravind Madhavan
- Rajiv Gandhi Center for Biotechnology, Jagathy, Thiruvananthapuram 695 014, Kerala, India; School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India
| | - Preeti Chaturvedi
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, CSIR Indian Institute for Toxicology Research (CSIR-IITR), 31 MG Marg, Lucknow 226 001, India
| | - Arivalagan Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712 100, China
| | - Hector Ruiz
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, Saltillo, Coahuila 25280, Mexico
| | - Vinod Kumar
- Fermentation Technology Division, CSIR - Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001, J & K, India
| | - Raveendran Sindhu
- Department of Food Technology, T K M Institute of Technology, Kollam-691505, Kerala, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India.
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Zhang X, Zhou Y, Xiong W, Wei W, Jiang W. Co-production of xylose, lignin, and ethanol from eucalyptus through a choline chloride-formic acid pretreatment. BIORESOURCE TECHNOLOGY 2022; 359:127502. [PMID: 35724907 DOI: 10.1016/j.biortech.2022.127502] [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: 05/07/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
A choline chloride-formic acid (ChCl-FA) pretreatment followed by enzymatic hydrolysis and fermentation were developed in this work for co-produce bioethanol, xylose, and lignin from eucalyptus. Results showed that ChCl-FA pretreatment can simultaneously degrade the xylan (∼95.2%) and lignin (∼74.4%) in eucalyptus, and obtained the pretreated eucalyptus having high glucan content and a numbers of cracks and holes, which was conducive to follow-up cellulase attacking. The hydrolysis experiments showed the maximum yield of glucose of 100 g eucalyptus was 35.3 g, which was equivalent to 90.3% of glucan in eucalyptus feedstock. The fermentation of enzymatic hydrolysate finally achieved the ethanol yield of 16.5 g, which corresponded to 74.5% theoretical ethanol yield from initial glucan in eucalyptus. In addition, 12.1 g xylose and 23.9 g lignin also could be obtained in pretreated liquid or/and hydrolysis residue, which represented for 61.4% xylan and 80.7% lignin in eucalyptus feedstock, respectively.
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Affiliation(s)
- Xiaohua Zhang
- College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China.
| | - Yaohong Zhou
- College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Wanming Xiong
- College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Weiqi Wei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Weikun Jiang
- State Key Laboratory of Bio-based Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology/Shandong Academy of Sciences, Jinan 250353, China
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Jayasekara S, Dissanayake L, Jayakody LN. Opportunities in the microbial valorization of sugar industrial organic waste to biodegradable smart food packaging materials. Int J Food Microbiol 2022; 377:109785. [PMID: 35752069 DOI: 10.1016/j.ijfoodmicro.2022.109785] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/12/2022] [Accepted: 06/07/2022] [Indexed: 12/20/2022]
Abstract
Many petroleum-derived plastics, including food packaging materials are non-biodegradable and designed for single-use applications. Annually, around 175 Mt. of plastic enters the land and ocean ecosystems due to mismanagement and lack of techno economically feasible plastic waste recycling technologies. Renewable sourced, biodegradable polymer-based food packaging materials can reduce this environmental pollution. Sugar production from sugarcane or sugar beet generates organic waste streams that contain fermentable substrates, including sugars, acids, and aromatics. Microbial metabolism can be leveraged to funnel those molecules to platform chemicals or biopolymers to generate biodegradable food packaging materials that have active or sensing molecules embedded in biopolymer matrices. The smart package can real-time monitor food quality, assure health safety, and provide economic and environmental benefits. Active packaging materials display functional properties such as antimicrobial, antioxidant, and light or gas barrier. This article provides an overview of potential biodegradable smart/active polymer packages for food applications by valorizing sugar industry-generated organic waste. We highlight the potential microbial pathways and metabolic engineering strategies to biofunnel the waste carbon efficiently into the targeted platform chemicals such as lactic, succinate, muconate, and biopolymers, including polyhydroxyalkanoates, and bacterial cellulose. The obtained platform chemicals can be used to produce biodegradable polymers such as poly (butylene adipate-co-terephthalate) (PBAT) that could replace incumbent polyethylene and polypropylene food packaging materials. When nanomaterials are added, these polymers can be active/smart. The process can remarkably lower the greenhouse gas emission and energy used to produce food-packaging material via sugar industrial waste carbon relative to the petroleum-based production. The proposed green routes enable the valorization of sugar processing organic waste into biodegradable materials and enable the circular economy.
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Affiliation(s)
- Sandhya Jayasekara
- School of Biological Science, Southern Illinois University Carbondale, Carbondale, IL, USA
| | - Lakshika Dissanayake
- School of Biological Science, Southern Illinois University Carbondale, Carbondale, IL, USA
| | - Lahiru N Jayakody
- School of Biological Science, Southern Illinois University Carbondale, Carbondale, IL, USA; Fermentation Science Institute, Southern Illinois University Carbondale, Carbondale, IL, USA.
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Sánchez Muñoz S, Rocha Balbino T, Mier Alba E, Gonçalves Barbosa F, Tonet de Pier F, Lazuroz Moura de Almeida A, Helena Balan Zilla A, Antonio Fernandes Antunes F, Terán Hilares R, Balagurusamy N, César Dos Santos J, Silvério da Silva S. Surfactants in biorefineries: Role, challenges & perspectives. BIORESOURCE TECHNOLOGY 2022; 345:126477. [PMID: 34864172 DOI: 10.1016/j.biortech.2021.126477] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/26/2021] [Accepted: 11/28/2021] [Indexed: 06/13/2023]
Abstract
The use of lignocellulosic biomass (LCB) as feedstock has received increasing attention as an alternative to fossil-based refineries. Initial steps such as pretreatment and enzymatic hydrolysis are essential to breakdown the complex structure of LCB to make the sugar molecules available to obtain bioproducts by fermentation. However, these steps increase the cost of the bioproduct and often reduces its competitiveness against synthetic products. Currently, the use of surfactants has shown considerable potential to enhance lignocellulosic biomass processing. This review addresses the main mechanisms and role of surfactants as key molecules in various steps of biorefinery processes, viz., increasing the removal of lignin and hemicellulose during the pretreatments, increasing enzymatic stability and enhancing the accessibility of enzymes to the polymeric fractions, and improving the downstream process during fermentation. Further, technical advances, challenges in application of surfactants, and future perspectives to augment the production of several high value-added bioproducts have been discussed.
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Affiliation(s)
- Salvador Sánchez Muñoz
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Thércia Rocha Balbino
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Edith Mier Alba
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Fernanda Gonçalves Barbosa
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Fernando Tonet de Pier
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Alexandra Lazuroz Moura de Almeida
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Ana Helena Balan Zilla
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Felipe Antonio Fernandes Antunes
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Ruly Terán Hilares
- Laboratório de Materiales, Universidad Católica de Santa María - UCSM. Urb. San José, San José s/n, Yanahuara, Arequipa, Perú
| | - Nagamani Balagurusamy
- Bioremediation laboratory. Faculty of Biological Sciences, Autonomous University of Coahuila (UA de C), Torreón Campus, 27000 Coah, México
| | - Júlio César Dos Santos
- Biopolymers, bioreactors, and process simulation laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil
| | - Silvio Silvério da Silva
- Bioprocesses and sustainable products laboratory. Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), 12.602.810. Lorena, SP, Brazil.
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Statistical optimization of saccharificaion of carbohydrate content of alkali pretreated sugarcane bagasse by enzyme cocktail produced by Bacillus vallismortis MH 1 and Bacillus aestuarii UE25. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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12
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Wei W, Lyu G, Jiang W, Chen Z, Wu S. High-efficiency synthesis of 5-hydroxymethylfurfural and 2,5-diformylfuran from fructose over magnetic separable catalysts. J Colloid Interface Sci 2021; 602:146-158. [PMID: 34119754 DOI: 10.1016/j.jcis.2021.05.161] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/18/2021] [Accepted: 05/27/2021] [Indexed: 11/15/2022]
Abstract
In this work, a sulfonic acid-functionalized magnetic separable solid acid (Fe3O4@SiO2-SO3H) was synthesized, characterized, and tested for fructose conversion to 5-hydroxymethylfurfural (HMF). Results indicated that the prepared catalyst had a good efficacy for fructose dehydration to HMF due to its larger specific surface area, appropriate acid amount and homogeneous acid distribution. The maximum HMF yield of this work was 96.1 mol%. It was obtained at 120 °C for 1.5 h with 100 mol% fructose conversion. More importantly, the produced HMF could be further in-situ oxidized into 2,5-diformylfuran (DFF) after the replacing of the Fe3O4@SiO2-SO3H with a ZnFeRuO4 catalyst, and the highest DFF yield of 90.2 mol% (based on initial fructose) was obtained after reaction another 8.5 h. The production of DFF from fructose through the above two consecutive steps avoids the intermediate HMF separation, which saves time and energy. In addition, both Fe3O4@SiO2-SO3H and ZnFeRuO4 catalysts exhibited satisfied stability in the recycling experiments, which can be reused at least for five times with the HMF and DFF yield loss<5.3% and 3.3%, respectively. Finally, the plausible reaction mechanisms for fructose conversion to HMF or DFF over Fe3O4@SiO2-SO3H or/and ZnFeRuO4 catalysts were also proposed in this work.
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Affiliation(s)
- Weiqi Wei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China; International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China; Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology, No. 3501 Daxue Road, Jinan 250353, China.
| | - Gaojing Lyu
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology, No. 3501 Daxue Road, Jinan 250353, China
| | - Weikun Jiang
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology, No. 3501 Daxue Road, Jinan 250353, China
| | - Zhengyu Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China; International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China
| | - Shubin Wu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou 510641, China.
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13
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Yuan Y, Jiang B, Chen H, Wu W, Wu S, Jin Y, Xiao H. Recent advances in understanding the effects of lignin structural characteristics on enzymatic hydrolysis. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:205. [PMID: 34670604 PMCID: PMC8527784 DOI: 10.1186/s13068-021-02054-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 10/10/2021] [Indexed: 05/19/2023]
Abstract
Enzymatic hydrolysis of lignocellulose for bioethanol production shows a great potential to remit the rapid consumption of fossil fuels, given the fact that lignocellulose feedstocks are abundant, cost-efficient, and renewable. Lignin results in low enzymatic saccharification by forming the steric hindrance, non-productive adsorption of cellulase onto lignin, and deactivating the cellulase. In general, the non-productive binding of cellulase on lignin is widely known as the major cause for inhibiting the enzymatic hydrolysis. Pretreatment is an effective way to remove lignin and improve the enzymatic digestibility of lignocellulose. Along with removing lignin, the pretreatment can modify the lignin structure, which significantly affects the non-productive adsorption of cellulase onto lignin. To relieve the inhibitory effect of lignin on enzymatic hydrolysis, enormous efforts have been made to elucidate the correlation of lignin structure with lignin-enzyme interactions but with different views. In addition, contrary to the traditional belief that lignin inhibits enzymatic hydrolysis, in recent years, the addition of water-soluble lignin such as lignosulfonate or low molecular-weight lignin exerts a positive effect on enzymatic hydrolysis, which gives a new insight into the lignin-enzyme interactions. For throwing light on their structure-interaction relationship during enzymatic hydrolysis, the effect of residual lignin in substrate and introduced lignin in hydrolysate on enzymatic hydrolysis are critically reviewed, aiming at realizing the targeted regulation of lignin structure for improving the saccharification of lignocellulose. The review is also focused on exploring the lignin-enzyme interactions to mitigate the negative impact of lignin and reducing the cost of enzymatic hydrolysis of lignocellulose.
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Affiliation(s)
- Yufeng Yuan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
| | - Bo Jiang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
| | - Hui Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
| | - Wenjuan Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
| | - Shufang Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China
| | - Yongcan Jin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China.
- Laboratory of Wood Chemistry, Nanjing Forestry University, 159 Longpan Rd, Nanjing, 210037, China.
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton, NB, E3B 11 5A3, Canada
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14
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Chourasia VR, Pandey A, Pant KK, Henry RJ. Improving enzymatic digestibility of sugarcane bagasse from different varieties of sugarcane using deep eutectic solvent pretreatment. BIORESOURCE TECHNOLOGY 2021; 337:125480. [PMID: 34320760 DOI: 10.1016/j.biortech.2021.125480] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 06/13/2023]
Abstract
Sugarcane bagasse, a fundamental by-product of the sugar industry, was utilised to improve its digestibility for bioenergy applications. Choline chloride based deep eutectic solvents (DESs) were used for pretreatment of five different varieties of sugarcane bagasse (SRA1, SRA5, Q208, MA239, ISB) and a comparative study of compositional and morphological changes was performed. Three eutectic mixtures - choline chloride: malonic acid (1:1), choline chloride: glycerol (1:2) and choline chloride: lactic acid (1:5) were used to selectively remove lignin and improve saccharification efficiency. Physico-chemical characterizations performed using FE-SEM, FTIR, TGA and XRD analysis consistently indicated disruption of bagasse structure after DES pretreatment. Glucose recovery was predominantly influenced by the glucose content, as SRA1 variety showed the highest recovery of 92.8% for choline chloride: glycerol DES pretreatment. Choline chloride: lactic acid DES pretreatment demonstrated the most efficient lignin removal of 81.6% for ISB variety and the enzyme amenability was prominently increased to 98.5%.
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Affiliation(s)
- Vallari R Chourasia
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India; Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Brisbane, QLD 4072, Australia
| | - Ashish Pandey
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Kamal Kishore Pant
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Robert J Henry
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Brisbane, QLD 4072, Australia
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15
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Almeida LEDS, Ribeiro GCA, Aparecida de Assis S. β-Glucosidase produced by Moniliophthora perniciosa: Characterization and application in the hydrolysis of sugarcane bagasse. Biotechnol Appl Biochem 2021; 69:963-973. [PMID: 33855775 DOI: 10.1002/bab.2167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 04/03/2021] [Indexed: 11/11/2022]
Abstract
β-Glucosidases (BGLs) belong to the group of enzymes of cellulases and act in the last stage of cellulose degradation, releasing glucose molecules, eliminating the inhibitory effect of cellobiose. This study focused on the production, characterization, and application of BGL from Moniliophthora perniciosa in the hydrolysis of pretreated sugarcane bagasse (3% NaOH + 6% Na2 SO3 ), with varying enzymatic loads and reaction times. The enzyme showed an optimum pH of 4.5 and 60°C. It was stable at all temperatures analyzed (50-90°C) and retained about 100% of its activity at 50°C after 60 min of incubation. Among the ions analyzed, BaCl2 increased BGL activity 9.04 ± 1.41 times. The maximum production of reducing sugars (89.15%) was achieved after 48 h with 10 mg of protein.
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Affiliation(s)
- Larissa Emanuelle da Silva Almeida
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
| | - Geise Camila Araújo Ribeiro
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
| | - Sandra Aparecida de Assis
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
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16
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Ling R, Wu W, Yuan Y, Wei W, Jin Y. Investigation of choline chloride-formic acid pretreatment and Tween 80 to enhance sugarcane bagasse enzymatic hydrolysis. BIORESOURCE TECHNOLOGY 2021; 326:124748. [PMID: 33508645 DOI: 10.1016/j.biortech.2021.124748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
In this study, a pretreatment that consisting of choline chloride (ChCl) and formic acid (FA) were performed to improve sugarcane bagasse (SCB) enzymatic hydrolysis. Results showed that the ChCl-FA pretreatment exhibited an extraordinary ability to selectively extract hemicellulose (~95.6%) and degrade a large number of lignin (~72.6%) at 110 °C for 120 min, which enhanced the enzymatic hydrolysis of pretreated SCB. Besides, the impact of various additives on pretreated substrate enzymatic hydrolysis confirmed that Tween 80 was the best enzymatic additive, which could significantly improve the glucose produced from pretreated SCB and remarkably reduce the hydrolysis time (from 72 h to 48 h) and enzyme dosage (from 20 FPU/g pretreated solid to 10 FPU/g pretreated solid). In summary, the coupling of ChCl-FA pretreatment and Tween 80 exhibited a promising way to enhance the sugar release from SCB.
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Affiliation(s)
- Rongxin Ling
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China; Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China
| | - Wenjuan Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China
| | - Yufeng Yuan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China; Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China
| | - Weiqi Wei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China; Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China
| | - Yongcan Jin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China; Joint International Research Lab of Lignocellulosic Functional Materials, Nanjing Forestry University, No. 159 Longpan Road, Nanjing 210037, China.
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17
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Zhang J, Xie J, Zhang H. Sodium hydroxide catalytic ethanol pretreatment and surfactant on the enzymatic saccharification of sugarcane bagasse. BIORESOURCE TECHNOLOGY 2021; 319:124171. [PMID: 33039842 DOI: 10.1016/j.biortech.2020.124171] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 05/16/2023]
Abstract
The effect of NaOH catalytic ethanol pretreatment under various temperatures (130-180 °C) and time (15-90 min) on the chemical composition and enzymatic saccharification of sugarcane bagasse was investigated in this study. The results showed that NaOH catalytic ethanol pretreatment assisted delignification and the reservation of cellulose and hemicellulose. When sugarcane bagasse was pretreated at 180 °C for 30 min, a substantial glucose yield of 91.6% was obtained after hydrolysis for 72 h, representing 94.6% of glucose in pretreated residue. This yield was promoted with respect to the compositional change and surface alteration of pretreated substrate. With the supplement of Tween 80, the enzyme usage would be saved by 50% and the enzymolysis time could be shortened to 24 h while obtaining comparable glucose yield. This study provided an economical feasible and gradual process for the generation of glucose, which was followed by fermentation and conversion to platform chemicals.
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Affiliation(s)
- Jiajie Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, 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 and Rural Affairs, South China Agricultural University, Guangzhou 510642, PR China
| | - Hongdan Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, PR China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China.
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18
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The Effect of Deinking Process on Bioethanol Production from Waste Banknote Paper. Processes (Basel) 2020. [DOI: 10.3390/pr8121563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this paper is to study the effect of reinking and pretreatment of waste banknote paper on its usability in the bioethanol production process. To this end, the tensile strength of worn banknote paper was first studied at different pH values. The sample with the lowest tensile strength was considered for the next sections. In the deinking process, NaOH at different concentrations (1%, 2%, 3%, and 4%) and in combination with ultrasonic treatment was applied. After deinking the pulp, two acidic and alkaline chemical pretreatments with concentrations of 1%, 2%, 3%, and 4% were used independently and in combination with ultrasonic. Enzymatic hydrolysis, following fermentation with Scheffersomyces stipitis, and crystallinity measurements were used to confirm the efficiency of the pretreatments. RSM Design Expert software was used to determine the optimal values by considering the three variables—enzyme loading, ultrasonic loading, and contact time for waste paper deinked (WPD) and waste paper blank (WPB) pulps. The results indicated that repulping was the most efficient at pH = 2. In deinking, the highest brightness was obtained using 3% NaOH in combination with ultrasonic. Between the acid and alkaline pretreatment, the acid treatment was more appropriate according to the resulting sugar concentration and weight loss. XRD tests confirmed that the lowest crystallinity index was obtained in the sample pretreated with 4% sulfuric acid in combination with ultrasonic. The highest sugar concentration in the enzymatic hydrolysis step was 92 g/L for WPD and 81 g/L for WPB. For the fermentation at 96 h, the highest ethanol concentration and process efficiency achieved were 38 g/L and 80.9% for WPD and 31 g/L and 75.04% for WPB, respectively. Our research shows that the deinking process can widen the utilization potential of waste banknote paper in biorefinery processes.
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19
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Zhao ZM, Liu ZH, Pu Y, Meng X, Xu J, Yuan JS, Ragauskas AJ. Emerging Strategies for Modifying Lignin Chemistry to Enhance Biological Lignin Valorization. CHEMSUSCHEM 2020; 13:5423-5432. [PMID: 32750220 DOI: 10.1002/cssc.202001401] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/19/2020] [Indexed: 06/11/2023]
Abstract
Biological lignin valorization represents a promising approach contributing to sustainable and economic biorefineries. The low level of valuable lignin-derived products remains a major challenge hindering the implementation of microbial lignin conversion. Lignin's properties play a significant role in determining the efficiency of lignin bioconversion. To date, despite significant progress in the development of biomass pretreatment, lignin fractionation, and fermentation over the last few decades, little efforts have gone into identifying the ideal lignin substrates for an efficient microbial metabolism. In this Minireview, emerging and state-of-the-art strategies for biomass pretreatment and lignin fractionation are summarized to elaborate their roles in modifying lignin structure for bioconversion. Fermentation strategies aimed at enhancing lignin depolymerization for microbial utilization are systematically reviewed as well. With an improved understanding of the ideal lignin structure elucidated by comprehensive metabolic pathways and/or big data analysis, modifying lignin chemistry could be more directional and effective. Ultimately, together with the progress of fermentation process optimization, biological lignin valorization will become more competitive in biorefineries.
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Affiliation(s)
- Zhi-Min Zhao
- School of Ecology and Environment, Inner Mongolia Key Laboratory of Environmental Pollution Controlling and Wastes Recycling, Inner Mongolia University, Hohhot, 010021, P. R. China
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA
| | - Zhi-Hua Liu
- Synthetic and Systems Biology Innovation Hub (SSBiH), Texas A&M University, College Station, TX 77843, USA
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Yunqiao Pu
- Center for Bioenergy Innovation, Joint Institute of Biological Science, Biosciences Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
| | - Xianzhi Meng
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA
| | - Jifei Xu
- School of Ecology and Environment, Inner Mongolia Key Laboratory of Environmental Pollution Controlling and Wastes Recycling, Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Joshua S Yuan
- Synthetic and Systems Biology Innovation Hub (SSBiH), Texas A&M University, College Station, TX 77843, USA
- Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Arthur J Ragauskas
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA
- Center for Bioenergy Innovation, Joint Institute of Biological Science, Biosciences Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
- Department of Forestry, Wildlife, and Fisheries, Center for Renewable Carbon, University of Tennessee Institute of Agriculture, Knoxville, TN 37996, USA
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20
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Hassanpour M, Abbasabadi M, Strong J, Gebbie L, Te'o VSJ, O'Hara IM, Zhang Z. Scale-up of two-step acid-catalysed glycerol pretreatment for production of oleaginous yeast biomass from sugarcane bagasse by Rhodosporidium toruloides. BIORESOURCE TECHNOLOGY 2020; 313:123666. [PMID: 32562969 DOI: 10.1016/j.biortech.2020.123666] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Two-step dilute acid and acid-catalysed glycerol pretreatment was developed to maximise sugar yield from sugarcane bagasse. At the laboratory scale, dilute acid pretreatment at 130 °C followed by acid-catalysed glycerol pretreatment at 170 °C led to a total sugar (C5 + C6) yield of 82%, 31% higher than that from one-step acid-catalysed glycerol pretreatment. At the pilot scale, the two-step dilute acid and acid-catalysed glycerol pretreatment led to a maximum sugar yield of 74%, 13% higher than that from one-step pretreatment with 52% reduction in glycerol usage. The enzymatic hydrolysate containing glucose and residual glycerol were used to produce microbial oils by a Rhodosporidium toruloides strain. A fed-batch cultivation strategy led to the production of 44.8 g/L cell mass, including 26.6 g/L oil, 8.6 g/L protein and 12.7 mg/L carotenoid. The cell mass and oil yields were 19% higher than those from batch cultivation as feedstock inhibition and catabolite repression were alleviated.
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Affiliation(s)
- Morteza Hassanpour
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia; School of Mechanical, Medical and Process Engineering, Science and Engineering Faculty, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia
| | - Mahsa Abbasabadi
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia; School of Biology & Environmental Science, Science and Engineering Faculty, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia
| | - James Strong
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia; School of Biology & Environmental Science, Science and Engineering Faculty, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia
| | - Leigh Gebbie
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia; School of Biology & Environmental Science, Science and Engineering Faculty, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia
| | - Valentino Setoa Junior Te'o
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia; School of Biology & Environmental Science, Science and Engineering Faculty, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia
| | - Ian M O'Hara
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia; School of Mechanical, Medical and Process Engineering, Science and Engineering Faculty, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia
| | - Zhanying Zhang
- Centre for Agriculture and the Bioeconomy, Institute for Future Environments, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia; School of Mechanical, Medical and Process Engineering, Science and Engineering Faculty, Queensland University of Technology, 2 George St, Brisbane, Qld 4000, Australia.
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21
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Zhang H, Zhang J, Xie J, Qin Y. Effects of NaOH-catalyzed organosolv pretreatment and surfactant on the sugar production from sugarcane bagasse. BIORESOURCE TECHNOLOGY 2020; 312:123601. [PMID: 32502887 DOI: 10.1016/j.biortech.2020.123601] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/25/2020] [Accepted: 05/27/2020] [Indexed: 06/11/2023]
Abstract
In this study, NaOH-catalyzed organosolv pretreatment with different loading of NaOH (0-10%) was proposed to disrupt the recalcitrant structure by degrading lignin, reserve the majority of cellulose and hemicellulose, and improve the enzymatic efficiency of sugarcane bagasse. It was found that the higher loading of NaOH during organosolv pretreatment yielded more glucose, and the synergistic performance of NaOH and ethanol on enzymolysis was superior to that pretreated with only NaOH and only ethanol during two-step pretreatment. Furthermore, Tween 80 was added to determine its influence on enzymolysis after NaOH-catalyzed organosolv pretreatment, leading to the highest glucose yield of 95.1% at 24 h, which saved 2/3 hydrolysis time while generating the similar glucose yield comparing with that without Tween 80. However, the increased yields of glucose by adding Tween 80 were decreased as hydrolysis time was prolonged from 6 h to 24 h.
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Affiliation(s)
- Hongdan Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, PR China; CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Guangzhou 510640, PR China.
| | - Jiajie Zhang
- College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, 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 and Rural Affairs, South China Agricultural University, Guangzhou 510642, PR China
| | - Yanlin Qin
- Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, PR China.
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22
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Gou Z, Ma NL, Zhang W, Lei Z, Su Y, Sun C, Wang G, Chen H, Zhang S, Chen G, Sun Y. Innovative hydrolysis of corn stover biowaste by modified magnetite laccase immobilized nanoparticles. ENVIRONMENTAL RESEARCH 2020; 188:109829. [PMID: 32798948 DOI: 10.1016/j.envres.2020.109829] [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: 02/25/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 05/22/2023]
Abstract
Intensive studies have been performed on the improvement of bioethanol production by transformation of lignocellulose biomass. In this study, the digestibility of corn stover was dramatically improved by using laccase immobilized on Cu2+ modified recyclable magnetite nanoparticles, Fe3O4-NH2. After digestion, the laccase was efficiently separated from slurry. The degradation rate of lignin reached 40.76%, and the subsequent cellulose conversion rate 38.37% for 72 h at 35 °C with cellulase at 50 U g-1 of corn stover. Compared to those of free and inactivated mode, the immobilized laccase pre-treatment increased subsequent cellulose conversion rates by 23.98% and 23.34%, respectively. Moreover, the reusability of immobilized laccase activity remained 50% after 6 cycles. The storage and thermal stability of the fixed laccase enhanced by 70% and 24.1% compared to those of free laccase at 65 °C, pH 4.5, respectively. At pH 10.5, it exhibited 16.3% more activities than its free mode at 35 °C. Our study provides a new avenue for improving the production of bioethanol with immobilized laccase for delignification using corn stover as the starting material.
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Affiliation(s)
- Zechang Gou
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Nyuk Ling Ma
- Faculty of Science and Marine Environment, University Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, China
| | - Wenqi Zhang
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Zhipeng Lei
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Yingjie Su
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Chunyu Sun
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Gang Wang
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Huan Chen
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Sitong Zhang
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Guang Chen
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China
| | - Yang Sun
- Key Laboratory of Straw Biology and Utilization, Ministry of Education, College of Life Science, JiLin Agricultural University, Changchun, 130000, JiLin, China; Innovation Platform of Straw Comprehensive Utilization Technology in Jilin Province, Changchun, 130000, Jilin, China.
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Hu S, Meng F, Huang D, Huang J, Lou W. Hydrolysis of corn stover pretreated by DESs with carbon-based solid acid catalyst. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-3022-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Evaluation of Napier Grass for Bioethanol Production through a Fermentation Process. Processes (Basel) 2020. [DOI: 10.3390/pr8050567] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Ethanol is one of the widely used liquid biofuels in the world. The move from sugar-based production into the second-generation, lignocellulosic-based production has been of interest due to an abundance of these non-edible raw materials. This study interested in the use of Napier grass (Pennisetum purpureum Schumach), a common fodder in tropical regions and is considered an energy crop, for ethanol production. In this study, we aim to evaluate the ethanol production potential from the grass and to suggest a production process based on the results obtained from the study. Pretreatments of the grass by alkali, dilute acid, and their combination prepared the grass for further hydrolysis by commercial cellulase (Cellic® CTec2). Separate hydrolysis and fermentation (SHF), and simultaneous saccharification and fermentation (SSF) techniques were investigated in ethanol production using Saccharomyces cerevisiae and Scheffersomyces shehatae, a xylose-fermenting yeast. Pretreating 15% w/v Napier grass with 1.99 M NaOH at 95.7 °C for 116 min was the best condition to prepare the grass for further enzymatic hydrolysis using the enzyme dosage of 40 Filter Paper Unit (FPU)/g for 117 h. Fermentation of enzymatic hydrolysate by S. cerevisiae via SHF resulted in the best ethanol production of 187.4 g/kg of Napier grass at 44.7 g/L ethanol concentration. The results indicated that Napier grass is a promising lignocellulosic raw material that could serve a fermentation with high ethanol concentration.
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