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Vardhan H, Sasmal S, Mohanty K. Detoxification of areca nut acid hydrolysate and production of xylitol by Candida tropicalis (MTCC 6192). Prep Biochem Biotechnol 2024; 54:61-72. [PMID: 37149784 DOI: 10.1080/10826068.2023.2207093] [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: 05/08/2023]
Abstract
Areca nut husk is the most promising alternative source of low-cost raw materials because it contains a considerable amount of five-carbon monosaccharide sugar in the form of xylose. This polymeric sugar can be isolated and transformed into a value-added chemical using fermentation. To extract sugars from areca nut husk fibers, preliminary pretreatment, such as dilute acid hydrolysis (H2SO4), was performed. The hemicellulosic hydrolysate of areca nut husk can produce xylitol through fermentation, but toxic components inhibit the growth of microorganisms. To overcome this, a series of detoxification treatments, including pH adjustment, activated charcoal, and ion exchange resin, were carried out to reduce the concentration of inhibitors in the hydrolysate. This study reports a remarkable 99% removal of inhibitors in the hemicellulosic hydrolysate. Subsequently, a fermentation process using Candida tropicalis (MTCC6192) was executed with the detoxified hemicellulosic hydrolysate of areca nut husk, yielding an optimum xylitol yield of 0.66 g/g. This study concludes that detoxification techniques like pH adjustment, activated charcoal, and ion exchange resins are the most economical and effective methods for eliminating toxic compounds in hemicellulosic hydrolysates. Therefore, the medium derived after detoxification from areca nut hydrolysate may be considered to have significant potential for xylitol production.
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Affiliation(s)
- Harsh Vardhan
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Soumya Sasmal
- Department of Biotechnology, Visva-Bharati, Santiniketan, India
| | - Kaustubha Mohanty
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
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Garmaroody ER, PahnehKolaei ND, Ramezani O, Hamedi S. Detoxification Approaches of Bagasse Pith Hydrolysate Affecting Xylitol Production by Rhodotorula mucilaginosa. Appl Biochem Biotechnol 2024; 196:129-144. [PMID: 37103733 DOI: 10.1007/s12010-023-04539-1] [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] [Accepted: 04/11/2023] [Indexed: 04/28/2023]
Abstract
In this study, the potential of bagasse pith (the waste of sugar and paper industry) was investigated for bio-xylitol production for the first time. Xylose-rich hydrolysate was prepared using 8% dilute sulfuric acid, at 120 °C for 90 min. Then, the acid-hydrolyzed solution was detoxified by individual overliming (OL), active carbon (AC), and their combination (OL+AC). The amounts of reducing sugars and inhibitors (furfural and hydroxyl methyl furfural) were measured after acid pre-treatment and detoxification process. Thereafter, xylitol was produced from detoxified hydrolysate by Rhodotorula mucilaginosa yeast. Results showed that after acid hydrolysis, the sugar yield was 20%. Detoxification by overliming and active carbon methods increased the reducing sugar content up to 65% and 36% and decreased the concentration of inhibitors to >90% and 16%, respectively. Also, combined detoxification caused an increase in the reducing sugar content (>73%) and a complete removal of inhibitors. The highest productivity of xylitol (0.366 g/g) by yeast was attained after the addition of 100 g/l non-detoxified xylose-rich hydrolysate into fermentation broth after 96 h, while the xylitol productivity enhanced to 0.496 g/g after adding the similar amount of xylose-rich hydrolysate detoxified by combined method (OL+AC2.5%).
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Affiliation(s)
- Esmaeil Rasooly Garmaroody
- Dept. of Bio-refinery, Faculty of New Technologies, Zirab Campus, Shahid Beheshti University, Savadkooh, Mazandaran, Iran
| | - Niloufar Davoodi PahnehKolaei
- Dept. of Bio-refinery, Faculty of New Technologies, Zirab Campus, Shahid Beheshti University, Savadkooh, Mazandaran, Iran
| | - Omid Ramezani
- Dept. of Bio-refinery, Faculty of New Technologies, Zirab Campus, Shahid Beheshti University, Savadkooh, Mazandaran, Iran.
| | - Sepideh Hamedi
- Dept. of Bio-refinery, Faculty of New Technologies, Zirab Campus, Shahid Beheshti University, Savadkooh, Mazandaran, Iran
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A Novel Method to Detoxify Steam-Exploded Biomass and Produce a Substrate for Biorefinery. Processes (Basel) 2022. [DOI: 10.3390/pr10122611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Pre-treatments at relatively high temperatures (range 160 °C–220 °C) are currently used to transform lignocellulosics into biofuels and chemicals. In this step, several molecules with an inhibitory effect in the subsequent fermentation processes are generated. These inhibitors include low-molecular-weight molecules and lignin fragments that can be removed by water washing. However, this procedure also removes valuable soluble carbohydrates which are then difficult to recover from the diluted stream. In this work, a new method to detoxify steam-exploded substrates is reported. The procedure is based on the evaporation of low-weight acids and aldehydes, which leaves all the sugars in the solid matrix, while the cellulose hornification (an irreversible modification of the cellulose fibres that depresses the saccharification yield) is prevented by adding steam to the hot fluidizing flow stream. Two systems were tested: a 0.1 kg/batch oscillating fluidized bed and a continuous fluidized bed dryer operating downstream of a steam explosion plant with a treatment capacity of 150 kg/h. The detoxified substrates were subjected to enzymatic hydrolysis and fermentation to obtain bioethanol, with a yield that was 14% higher than that obtained from substrates detoxified with conventional methods of drying or washing.
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Honarmandrad Z, Kucharska K, Gębicki J. Processing of Biomass Prior to Hydrogen Fermentation and Post-Fermentative Broth Management. Molecules 2022; 27:7658. [PMID: 36364485 PMCID: PMC9658980 DOI: 10.3390/molecules27217658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 09/10/2023] Open
Abstract
Using bioconversion and simultaneous value-added product generation requires purification of the gaseous and the liquid streams before, during, and after the bioconversion process. The effect of diversified process parameters on the efficiency of biohydrogen generation via biological processes is a broad object of research. Biomass-based raw materials are often applied in investigations regarding biohydrogen generation using dark fermentation and photo fermentation microorganisms. The literature lacks information regarding model mixtures of lignocellulose and starch-based biomass, while the research is carried out based on a single type of raw material. The utilization of lignocellulosic and starch biomasses as the substrates for bioconversion processes requires the decomposition of lignocellulosic polymers into hexoses and pentoses. Among the components of lignocelluloses, mainly lignin is responsible for biomass recalcitrance. The natural carbohydrate-lignin shields must be disrupted to enable lignin removal before biomass hydrolysis and fermentation. The matrix of chemical compounds resulting from this kind of pretreatment may significantly affect the efficiency of biotransformation processes. Therefore, the actual state of knowledge on the factors affecting the culture of dark fermentation and photo fermentation microorganisms and their adaptation to fermentation of hydrolysates obtained from biomass requires to be monitored and a state of the art regarding this topic shall become a contribution to the field of bioconversion processes and the management of liquid streams after fermentation. The future research direction should be recognized as striving to simplification of the procedure, applying the assumptions of the circular economy and the responsible generation of liquid and gas streams that can be used and purified without large energy expenditure. The optimization of pre-treatment steps is crucial for the latter stages of the procedure.
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Affiliation(s)
| | - Karolina Kucharska
- Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 11/12 Gabriela Narutowicza Street, 80-233 Gdansk, Poland
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Gares M, Hiligsmann S, Kacem Chaouche N. Lignocellulosic biomass and industrial bioprocesses for the production of second generation bio-ethanol, does it have a future in Algeria? SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03442-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Optimization of Xylose Recovery in Oil Palm Empty Fruit Bunches for Xylitol Production. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10041391] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The hardest obstacle to make use of lignocellulosic biomass by using green technology is the existence of lignin. It can hinder enzyme reactions with cellulose or hemicellulose as a substrate. Oil palm empty fruit bunches (OPEFBs) consist of hemicellulose with xylan as the main component. Xylitol production via fermentation could use this xylan since it can be converted into xylose. Several pretreatment processes were explored to increase sugar recovery from lignocellulosic biomass. Considering that hemicellulose is more susceptible to heat than cellulose, the hydrothermal process was applied to OPEFB before it was hydrolyzed enzymatically. The purpose of this study was to investigate the effect of temperature, solid loading, and pretreatment time on the OPEFB hydrothermal process. The xylose concentration in OPEFB hydrolysate was analyzed using high-performance liquid chromatography (HPLC). The results indicated that temperature was more important than pretreatment time and solid loading for OPEFB sugar recovery. The optimum temperature, solid loading, and pretreatment time for maximum xylose recovery from pretreated OPEFB were 165 °C, 7%, and 60 min, respectively, giving a xylose recovery of 0.061 g/g of pretreated OPEFB (35% of OPEFB xylan was recovered).
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Rhodotorula toruloides Single Cell Oil Production Using Eucalyptus urograndis Hemicellulose Hydrolysate as a Carbon Source. ENERGIES 2020. [DOI: 10.3390/en13040795] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Microbial oil is a potential substitute for vegetable oils in the biodiesel industry. Efforts to obtain cheap carbon sources for the cultivation of lipid-producing microorganisms comprise an active research area. This work aimed to extract the hemicellulose fraction from Eucalyptus uograndis and to use its hydrolysate as a carbon source for Rhodotorula toruloides (an oleaginous yeast) cultivation for microbial oil production. Hemicellulose hydrothermal extractions were performed at different temperatures, times, and ratios of solid to liquid (S/L). Temperature and time showed a stronger effect on the solubilization of hemicellulose. Hemicellulose extraction at 155 °C, 195 min, and an S/L ratio of 1/2 resulted in a hydrolysate with a xylose content of 37.0 g/l. R. toruloides cultivation in this hydrolysate showed that initial pH had a strong influence on cell growth. At an initial pH of 6.2, cells grew to 6.0 g/l of biomass with a lipid content of 50%. Therefore, we believe that E. urograndis hemicellulose hydrolysate could be a potential substrate for R. toruloides for lipid production based on the biorefinery concept.
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Wang F, Dong Y, Cheng X, Xie H, Song A, Zhang Z. Effect of detoxification methods on ABE production from corn stover hydrolysate by Clostridium acetobutylicum CICC 8016. Biotechnol Appl Biochem 2020; 67:790-798. [PMID: 31903642 DOI: 10.1002/bab.1881] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this study, effects of different single biomass derived inhibitors on acetone-butanol-ethanol (ABE) production by Clostridium acetobutylicum CICC 8016 were first investigated. The results showed that formic acid, coumaric acid, and furfural at 0.5 g/L (sodium formate equivalent) inhibited ABE production. Furthermore, corn stover hydrolysate media were prepared following dilute acid pretreatment, enzymatic hydrolysis, and detoxification with different methods. Among overliming, steam stripping, acetone-ethyl ether extraction, and ion exchange with five anion resins, adsorption with resin D301 showed the highest efficiency for inhibitor removal (99-100% of phenolics and 87-99% of sugar degradation products). Without detoxification, ABE production was lower than 1.0 g/L from 28.1 g/L sugars whereas ABE production with medium detoxified by D301 resin achieved higher ABE concentrations and yields than control with synthetic medium. Correlation analysis further revealed that formic acid, coumaric acid, and total phenolics were the major compounds inhibiting ABE production. The results also showed that the single detoxification method was sufficient to detoxify the hydrolysate for ABE production at the pretreatment conditions used in this study.
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Affiliation(s)
- Fengqin Wang
- College of Life Science, Henan Agricultural University, Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Zhengzhou, People's Republic of China
| | - Yuheng Dong
- College of Life Science, Henan Agricultural University, Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Zhengzhou, People's Republic of China
| | - Xiang Cheng
- College of Life Science, Henan Agricultural University, Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Zhengzhou, People's Republic of China
| | - Hui Xie
- College of Life Science, Henan Agricultural University, Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Zhengzhou, People's Republic of China
| | - Andong Song
- College of Life Science, Henan Agricultural University, Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Zhengzhou, People's Republic of China
| | - Zhanying Zhang
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, Australia
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9
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López-Linares JC, Romero I, Cara C, Castro E, Mussatto SI. Xylitol production by Debaryomyces hansenii and Candida guilliermondii from rapeseed straw hemicellulosic hydrolysate. BIORESOURCE TECHNOLOGY 2018; 247:736-743. [PMID: 30060408 DOI: 10.1016/j.biortech.2017.09.139] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 06/08/2023]
Abstract
This study evaluated the possibility of using rapeseed straw hemicellulosic hydrolysate as a fermentation medium for xylitol production. Two yeast strains, namely Debaryomyces hansenii and Candida guilliermondii, were used for this bioconversion process and their performance to convert xylose into xylitol was compared. Additionally, different strategies were evaluated for the hydrolysate detoxification before its use as a fermentation medium. Assays in semi-defined media were also performed to verify the influence of hexose sugars on xylose metabolism by the yeasts. C. guilliermondii exhibited higher tolerance to toxic compounds than D. hansenii. Not only the toxic compounds present in the hydrolysate affected the yeast's performance, but glucose also had a negative impact on their performance. It was not necessary to completely eliminate the toxic compounds to obtain an efficient conversion of xylose into xylitol, mainly by C. guilliermondii (YP/S=0.55g/g and 0.45g/g for C. guilliermondii and D. hansenii, respectively).
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Affiliation(s)
- Juan Carlos López-Linares
- Center for Advanced Studies in Energy and Environment (CEAEMA), University of Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - Inmaculada Romero
- Center for Advanced Studies in Energy and Environment (CEAEMA), University of Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - Cristobal Cara
- Center for Advanced Studies in Energy and Environment (CEAEMA), University of Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - Eulogio Castro
- Center for Advanced Studies in Energy and Environment (CEAEMA), University of Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - Solange I Mussatto
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800, Kongens Lyngby, Denmark.
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10
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Jia H, Shao T, Zhong C, Li H, Jiang M, Zhou H, Wei P. Evaluation of xylitol production using corncob hemicellulosic hydrolysate by combining tetrabutylammonium hydroxide extraction with dilute acid hydrolysis. Carbohydr Polym 2016; 151:676-683. [DOI: 10.1016/j.carbpol.2016.06.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 05/26/2016] [Accepted: 06/02/2016] [Indexed: 11/16/2022]
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11
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Coz A, Llano T, Cifrián E, Viguri J, Maican E, Sixta H. Physico-Chemical Alternatives in Lignocellulosic Materials in Relation to the Kind of Component for Fermenting Purposes. MATERIALS 2016; 9:ma9070574. [PMID: 28773700 PMCID: PMC5456911 DOI: 10.3390/ma9070574] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/04/2016] [Accepted: 07/08/2016] [Indexed: 11/16/2022]
Abstract
The complete bioconversion of the carbohydrate fraction is of great importance for a lignocellulosic-based biorefinery. However, due to the structure of the lignocellulosic materials, and depending basically on the main parameters within the pretreatment steps, numerous byproducts are generated and they act as inhibitors in the fermentation operations. In this sense, the impact of inhibitory compounds derived from lignocellulosic materials is one of the major challenges for a sustainable biomass-to-biofuel and -bioproduct industry. In order to minimise the negative effects of these compounds, numerous methodologies have been tested including physical, chemical, and biological processes. The main physical and chemical treatments have been studied in this work in relation to the lignocellulosic material and the inhibitor in order to point out the best mechanisms for fermenting purposes. In addition, special attention has been made in the case of lignocellulosic hydrolysates obtained by chemical processes with SO₂, due to the complex matrix of these materials and the increase in these methodologies in future biorefinery markets. Recommendations of different detoxification methods have been given.
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Affiliation(s)
- Alberto Coz
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Tamara Llano
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Eva Cifrián
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Javier Viguri
- Green Engineering and Resources, Department of Chemistry and Process and Resource Engineering, University of Cantabria, Avda. Los Castros s/n, Santander 39005, Spain.
| | - Edmond Maican
- Faculty of Biotechnical Systems Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, Sector 6, Bucuresti 060042, Romania.
| | - Herbert Sixta
- Department of Forest Products Technology, School of Chemistry, Aalto University, P.O. Box 16300, Aalto FI-00076, Finland.
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12
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Compounds inhibiting the bioconversion of hydrothermally pretreated lignocellulose. Appl Microbiol Biotechnol 2015; 99:4201-12. [DOI: 10.1007/s00253-015-6595-0] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 04/06/2015] [Accepted: 04/09/2015] [Indexed: 01/02/2023]
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13
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Ajao O, Le Hir M, Rahni M, Marinova M, Chadjaa H, Savadogo O. Concentration and Detoxification of Kraft Prehydrolysate by Combining Nanofiltration with Flocculation. Ind Eng Chem Res 2015. [DOI: 10.1021/ie504271w] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olumoye Ajao
- Research
Unit on Energy Efficiency and Sustainable Development of the Forest
Biorefinery, Chemical Engineering Department, Polytechnique Montreal, C.P. 6079 succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
| | - Morgane Le Hir
- Faculty
of Science, Aix Marseille Université, 52 Avenue Escadrille Normandie Niemen 13013 Marseille, Cedex 20, France
| | - Mohamed Rahni
- Centre National en Électrochimie et en Technologies Environnementales, Shawinigan, Quebec, Canada G9N 6V8
| | - Mariya Marinova
- Research
Unit on Energy Efficiency and Sustainable Development of the Forest
Biorefinery, Chemical Engineering Department, Polytechnique Montreal, C.P. 6079 succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
| | - Hassan Chadjaa
- Centre National en Électrochimie et en Technologies Environnementales, Shawinigan, Quebec, Canada G9N 6V8
| | - Oumarou Savadogo
- Research
Unit on Energy Efficiency and Sustainable Development of the Forest
Biorefinery, Chemical Engineering Department, Polytechnique Montreal, C.P. 6079 succ. Centre-Ville, Montréal, Quebec, Canada H3C 3A7
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15
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Cai D, Zhang T, Zheng J, Chang Z, Wang Z, Qin PY, Tan TW. Biobutanol from sweet sorghum bagasse hydrolysate by a hybrid pervaporation process. BIORESOURCE TECHNOLOGY 2013; 145:97-102. [PMID: 23562566 DOI: 10.1016/j.biortech.2013.02.094] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 02/22/2013] [Accepted: 02/23/2013] [Indexed: 06/02/2023]
Abstract
In this study, the pervaporation membrane was used not only for the detoxification of sweet sorghum bagasse (SSB) hydrolysate, but also for butanol separation from its fermentation broth. As a result of detoxification, about 94.5% furfural was reduced by the pervaporation method, and 138.25 g/L furfural was obtained in the permeate side. 87.5% phenolic compounds were degradated by further laccase detoxification. As for fermentation part, 12.3±0.1 g/L butanol, 6.1±0.05 g/L acetone and 2.5±0.07 g/L ethanol were obtained. And after 2h of pervaporation separation, 201.9 g/L butanol, 76.2g/L acetone and traces of ethanol were obtained in the permeate. The hybrid pervaporation process shows promising for the industrial production of biofuel butanol and biochemical furfural.
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Affiliation(s)
- Di Cai
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China
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16
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Pacek AW, Ding P, Garrett M, Sheldrake G, Nienow AW. Catalytic Conversion of Sodium Lignosulfonate to Vanillin: Engineering Aspects. Part 1. Effects of Processing Conditions on Vanillin Yield and Selectivity. Ind Eng Chem Res 2013. [DOI: 10.1021/ie4007744] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrzej W. Pacek
- School of Chemical
Engineering, University of Birmingham,
Birmingham B15 2TT, U.K
| | - Ping Ding
- School of Chemical
Engineering, University of Birmingham,
Birmingham B15 2TT, U.K
| | - Mark Garrett
- School of Chemistry and Chemical Engineering, Queens University, Belfast BT9 5AG, U.K
| | - Gary Sheldrake
- School of Chemistry and Chemical Engineering, Queens University, Belfast BT9 5AG, U.K
| | - Alvin W. Nienow
- School of Chemical
Engineering, University of Birmingham,
Birmingham B15 2TT, U.K
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17
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Bioconversion of sugarcane biomass into ethanol: an overview about composition, pretreatment methods, detoxification of hydrolysates, enzymatic saccharification, and ethanol fermentation. J Biomed Biotechnol 2012; 2012:989572. [PMID: 23251086 PMCID: PMC3516358 DOI: 10.1155/2012/989572] [Citation(s) in RCA: 139] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 10/19/2012] [Indexed: 11/17/2022] Open
Abstract
Depleted supplies of fossil fuel, regular price hikes of gasoline, and environmental damage have necessitated the search for economic and eco-benign alternative of gasoline. Ethanol is produced from food/feed-based substrates (grains, sugars, and molasses), and its application as an energy source does not seem fit for long term due to the increasing fuel, food, feed, and other needs. These concerns have enforced to explore the alternative means of cost competitive and sustainable supply of biofuel. Sugarcane residues, sugarcane bagasse (SB), and straw (SS) could be the ideal feedstock for the second-generation (2G) ethanol production. These raw materials are rich in carbohydrates and renewable and do not compete with food/feed demands. However, the efficient bioconversion of SB/SS (efficient pretreatment technology, depolymerization of cellulose, and fermentation of released sugars) remains challenging to commercialize the cellulosic ethanol. Among the technological challenges, robust pretreatment and development of efficient bioconversion process (implicating suitable ethanol producing strains converting pentose and hexose sugars) have a key role to play. This paper aims to review the compositional profile of SB and SS, pretreatment methods of cane biomass, detoxification methods for the purification of hydrolysates, enzymatic hydrolysis, and the fermentation of released sugars for ethanol production.
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18
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Zhang J, Geng A, Yao C, Lu Y, Li Q. Effects of lignin-derived phenolic compounds on xylitol production and key enzyme activities by a xylose utilizing yeast Candida athensensis SB18. BIORESOURCE TECHNOLOGY 2012; 121:369-378. [PMID: 22864173 DOI: 10.1016/j.biortech.2012.07.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 07/03/2012] [Accepted: 07/05/2012] [Indexed: 06/01/2023]
Abstract
Candida athensensis SB18 is potential xylitol producing yeast isolated in Singapore. It has excellent xylose tolerance and is able to produce xylitol in high titer and yield. However, by-products, such as phenolic compounds, derived in lignocellulosic biomass hydrolysate might negatively influence the performance of this strain for xylitol production. In this work, four potential phenolic inhibitors, such as vanillin, syringaldehyde, 4-hydroxybenzaldehyde and phenol, were evaluated for their inhibitory effects on xylitol production by C. athensensis SB18. Phenol was shown to be the most toxic molecule on this microorganism followed by syringaldehyde. Vanillin and 4-hydroxylbenzaldehyde was less toxic than phenol and syringaldehyde, with vanillin being the least toxic. Inhibition was insignificant when the total content of inhibitors was below 1.0 g/L. The presence of phenolic compounds affected the activity of xylose reductase, however not on that of xylitol dehydrogenase. C. athensensis SB18 is therefore a potential xylitol producer from hemicellulosic hydrolysate due to its assimilation of such phenolic inhibitors.
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Affiliation(s)
- Jinming Zhang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
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19
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Maiti SK, Lukka Thuyavan Y, Singh S, Oberoi HS, Agarwal GP. Modeling of the separation of inhibitory components from pretreated rice straw hydrolysate by nanofiltration membranes. BIORESOURCE TECHNOLOGY 2012; 114:419-427. [PMID: 22494575 DOI: 10.1016/j.biortech.2012.03.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 03/07/2012] [Accepted: 03/09/2012] [Indexed: 05/31/2023]
Abstract
The main objective of this work was to remove inhibitors and concentrate sugars in hydrolysates obtained from dilute acid-treated rice straw. The Donnan steric pore flow model (DSPM) was applied for membrane characterization and it captured the membrane transport adequately. The polyamide and polyethylene sulfate nanofiltration membranes of 150 Da molecular weight cut-off showed a separation factor of 3 for acetic acid over glucose and xylose and 7 over cellobiose for a simulated mixture at the optimum pH of 3. A separation factor of 3 was also found for the inhibitors hydroxymethyl furfural, ferulic and vanilic acids over sugars. The concentration of rice straw acid hydrolysate by a volume concentration ratio of 4 increased the concentrations of xylose, glucose, arabinose, cellobiose and inhibitor by 100%, 104%, 93%, 151% and 3%, respectively which indicates the membrane can be used for separating the inhibitors from acid-pretreated rice straw hydrolysate while simultaneously concentrating sugars.
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Affiliation(s)
- Soumen K Maiti
- Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
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Soto ML, Moure A, Domínguez H, Parajó JC. Recovery, concentration and purification of phenolic compounds by adsorption: A review. J FOOD ENG 2011. [DOI: 10.1016/j.jfoodeng.2011.02.010] [Citation(s) in RCA: 331] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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21
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Increased fermentability of enzymatically hydrolyzed steam-exploded corn stover for butanol production by removal of fermentation inhibitors. Process Biochem 2011. [DOI: 10.1016/j.procbio.2010.09.027] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Wei J, Yuan Q, Wang T, Wang L. Purification and crystallization of xylitol from fermentation broth of corncob hydrolysates. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11705-009-0295-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Sagne C, Fargues C, Broyart B, Lameloise ML, Decloux M. Modeling permeation of volatile organic molecules through reverse osmosis spiral-wound membranes. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2008.12.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Huang HJ, Ramaswamy S, Tschirner U, Ramarao B. A review of separation technologies in current and future biorefineries. Sep Purif Technol 2008. [DOI: 10.1016/j.seppur.2007.12.011] [Citation(s) in RCA: 446] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Telli-Okur M, Eken-Saraçoğlu N. Fermentation of sunflower seed hull hydrolysate to ethanol by Pichia stipitis. BIORESOURCE TECHNOLOGY 2008; 99:2162-9. [PMID: 17643295 DOI: 10.1016/j.biortech.2007.05.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2006] [Revised: 05/18/2007] [Accepted: 05/18/2007] [Indexed: 05/16/2023]
Abstract
Ethanol production from sunflower seed hull hydrolysate was evaluated using Pichia stipitis NRRL Y-7124. The hydrolysate prepared with 0.7 M H2SO4 at 90 degrees C was fermented as substrate in shaking bath experiments at 30 degrees C. In a group of experiments, the influence of various detoxification methods on the fermentability of hydrolysate was investigated at pH 6. Even though the ability of all employed pretreatments to enhance fermentation performance was close, the sequential application of overliming with sodium sulfite addition was the best detoxification method. Additional experiments were performed with detoxified hydrolysate to investigate the effect of shaking rate (70-130 rpm) and initial pH (5.5-7) on the fermentation. The highest ethanol level 11 gL(-1) was achieved at initial pH of 6 and 100 rpm shaking rate from a hydrolysate containing 48 gL(-1) total reducing sugar. The corresponding alcohol yield and volumetric productivity were 0.32 gg(-1) and 0.065 gL(-1)h(-1).
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Affiliation(s)
- Müjgan Telli-Okur
- Department of Chemical Engineering, Faculty of Architecture and Engineering, Gazi University, Maltepe 06570, Ankara, Turkey
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27
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Optimization of the pretreatment of rice straw hemicellulosic hydrolyzates for microbial production of xylitol. BIOTECHNOL BIOPROC E 2007. [DOI: 10.1007/bf02931063] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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DENG LIHONG, WANG YANHUI, ZHANG YANG, MA RUNYU. THE ENHANCEMENT OF AMMONIA PRETREATMENT ON THE FERMENTATION OF RICE STRAW HYDROLYSATE TO XYLITOL. J Food Biochem 2007. [DOI: 10.1111/j.1745-4514.2007.00102.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Sampaio FC, Torre P, Passos FML, de Moraes CA, Perego P, Converti A. Influence of inhibitory compounds and minor sugars on xylitol production by Debaryomyces hansenii. Appl Biochem Biotechnol 2007; 136:165-82. [PMID: 17496338 DOI: 10.1007/bf02686021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2006] [Revised: 04/09/2006] [Accepted: 04/20/2006] [Indexed: 10/22/2022]
Abstract
To obtain in-depth information on the overall metabolic behavior of the new good xylitol producer Debaryomyces hansenii UFV-170, batch bioconversions were carried out using semisynthetic media with compositions simulating those of typical acidic hemicellulose hydrolysates of sugarcane bagasse. For this purpose, we used media containing glucose (4.3-6.5 g/L), xylose (60.1-92.1 g/L), or arabinose (5.9-9.2 g/L), or binary or ternary mixtures of them in either the presence or absence of typical inhibitors of acidic hydrolysates, such as furfural (1.0-5.0 g/L), hydroxymethylfurfural (0.01- 0.30 g/L), acetic acid (0.5-3.0 g/L), and vanillin (0.5-3.0 g/L). D. hansenii exhibited a good tolerance to high sugar concentrations as well as to the presence of inhibiting compounds in the fermentation media. It was able to produce xylitol only from xylose, arabitol from arabinose, and no glucitol from glucose. Arabinose metabolization was incomplete, while ethanol was mainly produced from glucose and, to a lesser less extent, from xylose and arabinose. The results suggest potential application of this strain in xyloseto- xylitol bioconversion from complex xylose media from lignocellulosic materials.
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Affiliation(s)
- Fábio C Sampaio
- Department of Microbiology, Instituto de Biotecnologia Aplicada à Agropecuária, Federal University of Viçosa, Av. P. H. Rolfs s/n, 36570-000 Viçosa, Minas Gerais, Brazil
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Eucalyptus hydrolysate detoxification with activated charcoal adsorption or ion-exchange resins for xylitol production. Process Biochem 2004. [DOI: 10.1016/j.procbio.2003.09.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Kinetic behavior of Candida guilliermondii yeast during xylitol production from highly concentrated hydrolysate. Process Biochem 2004. [DOI: 10.1016/s0032-9592(03)00261-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lima LHA, das Graças de Almeida Felipe M, Vitolo M, Torres FAG. Effect of acetic acid present in bagasse hydrolysate on the activities of xylose reductase and xylitol dehydrogenase in Candida guilliermondii. Appl Microbiol Biotechnol 2004; 65:734-8. [PMID: 15107950 DOI: 10.1007/s00253-004-1612-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2004] [Accepted: 03/21/2004] [Indexed: 12/15/2022]
Abstract
The first two steps in xylose metabolism are catalyzed by NAD(P)H-dependent xylose reductase (XR) (EC 1.1.1.21) and NAD(P)-dependent xylitol dehydrogenase (XDH) (EC 1.1.1.9), which lead to xylose-->xylitol-->xylulose conversion. Xylitol has high commercial value, due to its sweetening and anticariogenic properties, as well as several clinical applications. The acid hydrolysis of sugarcane bagasse allows the separation of a xylose-rich hemicellulosic fraction that can be used as a substrate for Candida guilliermondii to produce xylitol. However, the hydrolysate contains acetic acid, an inhibitor of microbial metabolism. In this study, the effect of acetic acid on the activities of XR and XDH and on xylitol formation by C. guilliermondii were studied. For this purpose, fermentations were carried out in bagasse hydrolysate and in synthetic medium. The activities of XR and XDH were higher in the medium containing acetic acid than in control medium. Moreover, none of the fermentative parameters were significantly altered during cell culture. It was concluded that acetic acid does not interfere with xylitol formation since the increase in XR activity is proportional to XDH activity, leading to a greater production of xylitol and its subsequent conversion to xylulose.
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