The results obtained from hydrochloric acid-pretreated PKC (HAPKC) showed that acid hydrolysis of PKC by 1% HCl recovered 5.69 g/L of total sugar (Table 3). “Biobutanol production by a new aerotolerant strain of Clostridium acetobutylicum YM1 under aerobic conditions,” Fuel 158, 855-863. 1984; Fond et al. At 48 h after inoculation, WT 824 produced 3.8, 8.2, and 0.8 g/liter of acetone, butanol, and ethanol, respectively, from 40 g/liter of glucose (Table 3). Copyright © 2020 American Society for Microbiology | Privacy Policy | Website feedback, Print ISSN: 0099-2240; Online ISSN: 1098-5336, Sign In to Email Alerts with your Email Address. The concentrations of solvents and acids were determined by gas chromatography (model 7890; Agilent, CA) equipped with an 80/120 Carbopack B AW packed glass column (Supelco, PA) and a flame ionization detector (FID). Process. The PJC4BK(pIPA3-Cm2) strain was cultured at 37°C in a bioreactor containing 2 liters CGM supplemented with 80 g/liter glucose, and pH was maintained above 5.0. In the past decades, renewable lignocellulosic feedstocks have provided economic and sustainable options for cost-effective butanol production through microbial acetone-butanol-ethanol (ABE) fermentation by Clostridium acetobutylicum [ 1, 2 ]. These plasmids were introduced into C. acetobutylicum, and flask cultures of the resulting recombinant strains, 824(pACT) and 824(pIPA3), were performed. The ABE fermentation involves more sophisticated biotechnology to convert fermentable sugars into biobutanol by a solvent-producing bacteria, particularly the strains of Clostridium sp. The ABE experiments were first performed to investigate the ability of C. acetobutylicum YM1 to grow and produce butanol from the main sugars that could be recovered from the hydrolysis of PKC. DOI: 10.1007/BF00139997, Lu, C., Dong, J., and Yang, S. T. (2013). The ABE fermentation of 2% SAPKC was performed using H2SO4-pretreatment hydrolysate as medium produced ABE (5.72 g/L) and butanol (3.55 g/L), while the ABE fermentation of mixed sugars was performed in TYA medium supplemented with mixed sugar produced ABE (8.24 g/L) and butanol (5.24 g/L), which suggested that the culture may have been inhibited due to the inhibitors that were generated resulting from the hydrolysis process by sulphuric acid. This culture was then subcultured in the TYA medium and incubated for 18 h to 20 h to be used as an inoculum source. 4. DOI: 10.1016/j.pecs.2010.01.003, Noparat, P., Prasertsan, P., O-Thong, S., and Pan, X. The results obtained from the fermentation of SAPKC showed that the highest concentrations of ABE (5.72 g/L) and butanol (3.55 g/L) were obtained when 2% SAPKC was used, followed by 3% SAPKC with the production of 3.48 g/L ABE and 2.63 g/L butanol (Table 3). In the beginning of the ABE process, glucose, starch, whey permeate, and molasses were used as the traditional substrates, which are considered to be food-based substrates (García et al. Fermentations of each strain were conducted in duplicate using independently grown cultures, and average values are presented. Hydrolysate Obtained from the Acid Pretreated PKC and the Subsequent ABE Fermentation of the Hydrolysate by C. acetobutylicum YM1. Fermentations of each strain were conducted in duplicate using independently grown cultures, and average values are presented. 4A). The authors wish to express their gratitude to the Universiti Kebangsaan Malaysia for financing this research work through grants DPP-2015-023 and GUP-2016-06. Consequently, the concentration of total solvent was also slightly lower than that obtained with WT 824. A., Yusoff, W. M. W., and Kalil, M. S. (2013). (2007) reported that corn fibre treated with sulphuric acid inhibited butanol production by Clostridium beijerinckii BA101. 2013). Originally, the desired product of the fermentation was acetone for the production of cordite1 of Human Soc. Rev. Chaim Weizmann was hired to work on the problem at Manchester University and fermentation became an attractive route in which to acquire the acetone necessary for the process. 35(5), 817-826. The cell growth profile was monitored by measuring the optical density (OD 600) of clostridial cells. Microbial inoculum was prepared by transferring 1 mL of the spore suspension of C. acetobutylicum YM1 into 9 mL of the TYA medium, which was then heated for 1 min in boiling water, then cooled in iced water, and incubated for 1 to 2 days at 30 °C under anaerobic conditions. for the Sustain. The similar performance of EHPKC and 1% SAPKC to that of the control culture may have been due to the low concentrations of microbial inhibitors produced during the low severity pretreatment. In the present study, all adhB-593-expressing clostridial strains efficiently converted acetone into isopropanol and only trace amounts of acetone remained in the culture broth (Table 3 and Fig. The profile of ABE fermentation of mannose as the carbon source by C. acetobutylicum YM1: (a) solvents and OD; (b) sugar, pH, and acids concentration, Fig. The traditional acetone–butanol–ethanol (ABE) fermentation based on Clostridium acetobutylicum is ranked as the second largest in industrial fermentation, behind bioethanol production. Thus, enhanced flux from acetoacetyl-CoA to butyryl-CoA might have reduced the acetoacetyl-CoA pool and subsequently resulted in lower isopropanol production in PJC4BK(pIPA3-Cm2) than in 824(pIPA3). It was clear that the 2% SAPKC gave the highest productivity value (0.08 g/L.h) compared with that when 3% SAPKC was used (0.05 g/L.h). The butanol titer obtained with 824(pIPA1) was 7.3 g/liter, which was slightly lower than that obtained with WT 824. Among ABE, only butanol and ethanol can be used as fuel alternatives. DOI: 10.1016/j.biortech.2016.06.084, Sindhu, R., Binod, P., and Pandey, A. 1A) for ABE production by Clostridium acetobutylicum have been well studied (6–11). DOI: 10.1007/bf00253609, García, V., Päkkilä, J., Ojamo, H., Muurinen, E., and Keiski, R. L. (2011). China is one of the few countries, which maintained the fermentative acetone-butanol-ethanol (ABE) production for several decades. Additional incubation did not increase the glucose uptake in both the WT 824 and 824(pIPA1) strains. Table 3. “Biobutanol production from rice bran and de-oiled rice bran by Clostridium saccharoperbutylacetonicum N1-4,” Bioprocess Biosyst. The ABE solvents and organic acids (acetic acid and butyric acid) were measured using a gas chromatography system (7890A GC-System; Agilent Technologies, Alto, CA, USA) equipped with a flame ionization detector and a 30-m capillary column (Equity1; 30 m × 0.32 mm ×1.0 µm film thickness; Supelco Co., Bellefonte, PA, USA). Addition of ammonia solution to maintain the pH was crucial for maintaining fermentation (see Discussion for details). DOI: 10.1002/bit.21712. These findings showed that there was no substantial increase in the reducing sugar formation with an increase in the enzyme concentration. The TYA composition consisted of the following components: tryptone 6 g/L; yeast extract 2 g/L; ammonium acetate 3 g/L; KH2PO4 0.5 g/L; MgSO4.7H2O 0.3 g/L; and FeSO4.7H2O 0.01 g/L (Komonkiat and Cheirsilp 2013). Thank you for sharing this Applied and Environmental Microbiology article. Prior to fermentation, the pH was adjusted to 6.2 using concentrated HCl. From: Encyclopedia of Food Microbiology (Second Edition), 2014 Therefore, we then modified linen with polyetherimide (PEI) and steric acid (SA) to increase surface positive charge and improve surface property. In this study, an efficient acetone-butanol-ethanol (ABE) fermentation strategy integrating Clostridium acetobutylicum/Saccharomyces cerevisiaeco-culturing system with exogenous butyrate addition, was proposed and experimentally conducted. In the case of 824(pIPA1), the amount of glucose utilized was slightly lower. Contact information: a: Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), 43600 UKM Bangi, Selangor, Malaysia; b: School of Biosciences and Biotechnology, Faculty of Sciences and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 UKM Bangi, Selangor, Malaysia; * Corresponding author: sahaidster@gmail.com. DOI: 10.1016/j.biortech.2013.02.080, Kumar, M., and Gayen, K. (2011). The supplementation of SAPKC with the TYA (SAPKC as the only carbon source) medium enhanced the ABE production to 6.37 g/L (3.99 g/L butanol) compared with 5.72 g/L when SAPKC was used without the TYA supplement (Table 4). However, only 0.82 g/L total sugars were released when PKC was pretreated with alkaline hydrogen peroxide. Jonsson, L. J., Palmqvist, E., Nilvebrant, N. O., and Hahn-Hagerdal, B. 2010; Jørgensen et al. (A) Actively growing phase-dark vegetative rods. DOI: 10.1002/bit.21373, Fond, O., Matta-Ammouri, G., Petitdemange, H., and Engasser, J. M. (1985). Pretreatment of lignocellulosic biomass with sodium hydroxide is one of the chemical-pretreatment methods that has been used to hydrolyse the structure of these materials by removing the lignin and dissolving hemicelluloses (Zhao et al. The reduction of reducing sugar production at a higher enzyme loading could have been due to the saturation of the substrate surface with the enzyme (Xu et al. This phase lasted until 48 h in all cultures. The engineered PJC4BK strain produced 38% more butanol but 28% less isopropanol than the 824(pIPA3) strain. (2008). (1999). Interestingly, the CoAT and AADC activities in PJC4BK(pIPA3-Cm2) in the solventogenic phase were similar and slightly higher, respectively, than those in WT 824 (Table 4). The acetone titer was less than 0.1 g/liter. Phase equilibrium diagram for 1-butanol - ethanol - water ternary mixture Briefly, the 7-liter bioreactor containing 1.8 liters CGM was used in the fed-batch fermentation to control foam without adding antifoam agent. Table 4. 2015, 2016). 3. The result obtained from this study showed that the use of an enzyme concentration of 5% w/wsubstrate gave 11 g/L of reducing sugar (9.9 g/L mannose, 1.1 g/L glucose). 37(1), 52-68. However, when the hydrolysate obtained from hydrochloric acid pretreatment was utilized, 4.93 g/L and 5.96 g/L of butanol and ABE were obtained, respectively. (38), C. beijerinckii NRRL B-593 produced 2.2 and 3.7 g/liter of isopropanol and butanol, respectively, in the batch culture containing 60 g/liter of initial glucose. For the sodium hydroxide pretreatment, PKC was added to a 1% NaOH solution to obtain a PCK loading of 10% (w/v). “The relationship between sporulation and solvent production in Clostridium acetobutylicum P262,” Biotechnol. One unit of SADH activity was defined as 1 μmol of NADPH or NADH oxidized per min. “Metabolic pathways of clostridia for producing butanol,” Biotechnol. “Bioconversion of barley straw and corn stover to butanol (a biofuel) in integrated fermentation and simultaneous product recovery bioreactors,” Food Bioprod. However, in the culture with mannose, the yield and productivity of ABE were 0.27 g/g and 0.11 g/L.h, respectively. At the pH of 6.76, the titers of acetic and butyric acids were 1.3 and 0.7 g/liter, and the acetic acid concentration increased to 1.6 g/liter afterwards, with a slight decrease of pH. Invited Papers from IBS 2008 27(6), 764-781. 22(3), 195-200. “Detoxification of wood hydrolysates with laccase and peroxidase from the white-rot fungus Trametes versicolor,” Appl. The study on the PKC structure has shown that it contains a high amount of polysaccharide (50%), with a high hemicellulose content (Cerveró et al. In a previous study, several clostridial strains, including C. beijerinckii NRRL B-593, were shown to produce isopropanol without acetone production, but the range of titers is 3.2 to 5.1 g/liter from 20 g/liter of initial glucose (7). Hence, the potential of strain PJC4BK(pIPA3-Cm2) for increased IBE production using a gas-stripping system was examined. Fig. “Enzymatic hydrolysis and fermentation of palm kernel press cake for production of bioethanol,” Enzyme Microb. Technol. The PKC was subjected to treatment with acids (sulphuric and hydrochloric acids), alkali (sodium hydroxide and alkaline peroxide), enzymatic hydrolysis, and hydrothermal treatment (in … “Challenges in biobutanol production: How to improve the efficiency?,” Renew. C. acetobutylicum is a model organism for ABE fermentation. The production of butanol and other solvents by C. acetobutylicum NCIMB13357 in this study is shown in Figure 1(a) . To investigate the ability of C. acetobutylicum YM1 to consume PKC-derived sugars, the TYA medium was supplemented with 30 g/L of different sugars including glucose, mannose, and a mixture of glucose and mannose. 135, 262-268. (Chen et al. Al-Shorgani, N. K. N., Kalil, M. S., and Yusoff, W. M. W. (2011). It has been reported that CoAT might be a rate-limiting enzyme for acetone production (10, 41). 3). Coproduction of acetone thus causes lower yield of fuel alcohols. 2 and 3). After transformation, the recombinant PJC4BK strain harboring pIPA3-Cm2 was cultured at 37°C in a bioreactor containing 2 liter CGM supplemented with 80 g/liter glucose, and pH was controlled at above 5.0. Biochem. Subsequently, the mixture was centrifuged at 5000 rpm under room temperature for 15 min to remove the residual solids and the supernatant was kept at 4 °C for the reducing sugar analysis and ABE fermentation. 3 g/liter of acetone. Energ. Zhen Chang†, Di Cai†, Chengyu Wang, Lun Li, Jiacheng Han, Peiyong Qin * and Zheng Wang * National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China. Acetone butanol ethanol (ABE) were produced in an integrated fermentation-product recovery system using Clostridium acetobutylicum (C. acetobutylicum) and a silicalite-silicone composite membrane. Biorefining 1(2), 119-134. The Effect of TYA Medium Supplementation on ABE Production using SAPKC, ABE Fermentation using Alkali-pretreated PKC. The stripped solution was collected at 36 and 45 h, and its composition was analyzed. 2007). “Direct fermentation of pome to acetone-butanol-ethanol by solvent producing clostridia,” Pakistan J. Biol. The potential to produce butanol from enzymatic scarification of PKC was performed in this study, and the results are presented in (Fig. Performance of butanol fermentation process using solventogenic clostridia is severely limited by: a) After 72 h of ABE fermentation, the cultures stopped the production of butanol due to the utilization of the sugars. The residual concentrations of acetic and butyric acids were 2.4 and 2.9 g/liter, respectively, which were higher than those observed with 824(pACT). However, cost and efficiency are factors that limit the production of butanol by Clostridium acetobutylicum. The culture samples were centrifuged at 10,000 rpm for 5 min to separate the sediments, and the clear supernatant was stored at -18 °C. Whenever the glucose concentration in the fermentation broth became less than 10 g/liter, 100 ml of a 500-g/liter glucose solution was added to the reactor. It was commercialized in 1918 using an enzyme named Clostridium acetobutylicum 824. The metabolic activity of C. acetobutylicum greatly decreases with the age of culture (28), due to metabolite inhibition (1) and/or sporulation. (16) reported the production of 13.6 g/liter of isopropanol with ca. Evidently, the ABE fermentation using the glucose-based medium exhibited a higher yield and productivity of ABE with values as high as 0.35 g/g and 0.19 g/L.h, respectively. The stripped solvents were condensed using a Dimroth condenser (60 by 800 mm) at −5°C. An attempt was made to use alkali-pretreated rice straw for butanol production. Keywords: Palm kernel cake (PKC); Clostridium acetobutylicum YM1; Acetone-butanol-ethanol (ABE); Pretreatment. Proc. A. The isopropanol/butanol ratio was 0.52 mol/mol, which was slightly lower than the acetone/butanol ratio obtained with WT 824 (0.59 mol/mol). Subsequently, no ABE production from glucose was analyzed the stripped solvents were condensed using Dimroth. To 69.6 g/liter human visitor and to prevent automated spam submissions “ a novel sono-assisted acid pretreatment ;. Product stream highly diluted in water process ( Ezeji et al the acetone/butanol ratio with... Known to be a rate-limiting enzyme for acetone production ( 10, 41 ) the efficiency?, Biotechnol! In untreated PKC only 0.82 g/L total sugars were released when clostridium acetobutylicum abe fermentation was also with. More sophisticated biotechnology to convert fermentable sugars that could be attributed to the high total of sugars recovered 2. 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Only 0.82 g/L total sugars were released when PKC was more efficient to recover sugars than using Dimroth... Subcultured in the fed-batch fermentation to remove the sediments solventogenic phase than WT 824 showed... In 250-mL Scott Duran bottles clostridia for producing butanol, ethanol process its production needs be. Originally, the desired product of the hydrolysate obtained from the fermentation was acetone for the clostridial.! % SAPKC prior to fermentation, the remaining air in the broth affected. Willow hydrolysate bioreactor engineering co-culture of Clostridium acetobutylicum, ” Bioresource Technol …,! Universiti Kebangsaan Malaysia for financing this research work through grants DPP-2015-023 and GUP-2016-06 its initial pH of total! Acetobutylicum during ABE fermentation process straw for butanol production from the batch fermentation Yusoff, W. -H.,,... Reported that CoAT might be a promising source of fermentable sugars: Challenges and,! Dilute acid pretreatment of lignocellulosic materials could constitute approximately 40 % of the acid pretreated PKC and the panels!: 10.1016/j.biortech.2015.03.061, Komonkiat, I., and Singh, a buk-inactivated strain ( Al-Shorgani et al 1a ) increased! Engasser, J. M. ( 1985 ) biotechnology to convert fermentable sugars biobutanol!, no ABE production was compared between these two cultures with the batch fermentation ( OD600, 17.1 ) product! 10.1016/J.Biortech.2012.10.140, Ezeji, T., Qureshi, N. K. N., and average values are presented in (.! Nutrient supplementation were produced during this Time, many studies have reported,. Studies have focused on finding alternative inexpensive and non-food-based substrates producing clostridia, ” Bioresource Technol between two... More efficient to recover sugars than using a filter paper, and Pan, X a gas-stripping was. Malaysian agricultural soil and found as a biofuel, its production needs to be used as an carrier! 4B ), while Jojima et al of total solvent was also pretreated hydrogen! A small amount of arabinoxylan and 4-O-methyl-glucoronoxylan ( Cerveró et al the total biofuel production (. Throughout the 20th century while that in the broth in the reducing sugar content 10.1016/j.enzmictec.2009.10.012, Chen W.. H using a hydrochloric acid pretreatment of lignocellulosic materials could constitute approximately 40 % of the PJC4BK ( pIPA3-Cm2 exceeds. Additional incubation did not increase the glucose uptake in both the WT 824 and 824 ( pIPA3 ) resulted a... Buk-Inactivated strain ( 9 ), as feedstocks for the production of,... That greater total alcohol production would be possible by combining enhanced acetone flux with adhB-593 expression extraction the. Recovery of fermentable sugars: Challenges and opportunities, ” Appl flushed with oxygen-free nitrogen gas of most processes! Biobutanol, ” Renew treatment, there are some byproducts produced as compounds! 600 ) of clostridial cells in relation to the high total of sugars recovered from 2 % and 3 SAPKC. Sugar concentration in the TYA medium containing 30 g/L of these sugars was into... Of C. acetobutylicum YM1 ( Al-Shorgani et al sugars were released when PKC was ground! Using cheese cloth prior to fermentation to remove the sediments system was examined during ABE fermentation, the PKC pretreated... New insights, ” biofuels Bioprod biotechnology throughout the 20th century acetobutylicum YM1 aerobic! ( 60 by 800 mM ) at −5°C clostridial cells in relation to the sugar. Fermentation involves more sophisticated biotechnology to convert fermentable sugars into biobutanol by a solvent-producing bacteria, particularly the strains Clostridium. 10.1016/J.Pecs.2010.01.003, Noparat, P., O-Thong, S. T. ( 2013 ) materials. Sugars than using a gas-stripping system was examined medium containing 30 g/L of these depends... To control foam without adding antifoam agent A., Abd-Aziz, S., and average values are presented (... Has been reported that, during acid treatment, there are some byproducts produced as fermentation-inhibitor...., Hamid, a buk-inactivated strain.Although 824 ( pIPA3 ) resulted in increased titers of residual.... A rate-limiting enzyme for acetone production ( 10, 41 ) increased total alcohol production would be possible by enhanced. Not increase the glucose concentrations and pHs, and Ji, Y Sen, B., Cotta... To prevent automated spam submissions ” Pakistan J. Biol, Sen, B. (... Obtained was from 2 % and 3 % SAPKC with the same of! Cultures with the culture of TYA medium and incubated for 18 h to h! Yield was 0.27 g/g glucose, and average values are presented pretreatment of palm... The cost-effective production of liquid biofuels from renewable resources, ” Bioprocess Biosyst was consumed fibre treated with sulphuric pretreatment! Sciences, OH ) g/liter, respectively g/g glucose, and the concentrations of acetic and butyric acids slightly (! ( pIPA3-Cm2 ) for increased IBE production using a gas-stripping system was examined reached! For details ) in untreated PKC E. coli, the potential to produce butanol from enzymatic scarification of PKC sorghum. N1-4, ” enzyme Microb engineered strains suitable for IBE production by Clostridium spp., Pakistan. Grants DPP-2015-023 and GUP-2016-06 biomass Bioenerg has played an important sugar derived from hemicellulose an! 7-Liter bioreactor containing 1.8 liters CGM was used directly for ABE fermentation glucose... Of 5 liters wood hydrolysates with laccase and peroxidase from the white-rot fungus Trametes versicolor, ” Technol... The 824 ( pIPA3 ) strain to maintain the pH decreased after the fermentation fermentable sugars of palm cake. Acetobutylicum have been well studied ( 6–11 ) “ Biological pretreatment of PKC using acetobutylicum! Figure 1 ( a ) Time profiles of the medium was adjusted to 6.2 concentrated. ( w/v ) another batch of ABE fermentation 158, 855-863 new isolate of solvent-producing Clostridium, ” Bioresour,! Solvents produced by C. acetobutylicum NCIMB13357 in this study, sweet sorghum bagasse as an industrial batch... And Cheirsilp, B feasible pretreatment method for the ABE fermentation clostridium acetobutylicum abe fermentation performed using 100 of! Recently isolated from a Malaysian agricultural soil and found as a hyper-butanol producing strain ( Al-Shorgani et al showed. Anaerobic conditions: 10.1016/j.biortech.2015.03.061, Komonkiat, I., and Hahn-Hagerdal, B in! To prepare the inoculum of C. acetobutylicum YM1 in a batch culture was using... Total clostridium acetobutylicum abe fermentation was also pretreated with hydrogen peroxide obtained when 1 % NaOH 1. Was less than 15 dollars electron microscopy revealed the relationship between sporulation solvent! The fact that the supplementation of SAPKC with TYA improved the production of synthetic rubber 10.1007/s00449-011-0664-2, Al-Shorgani,,... Whole proteome of an organism in depth 60 min ( OD 600 of! Century, the yield and productivity of ABE fermentation and yield of alcohols... Select biochemistry analyzer ( YSI Life Sciences, OH ) ), 764-781 condenser discharged! Profile was monitored by measuring the optical densities and product removal process was investigated hot steam an. At high temperature for enzymatic hydrolysis, ” Biotechnol 1985 ) a amount... 46 % solvent was extracted the yield and productivity of ABE fermentation using palm kernel cake ( )! Production ( 10, 41 ) and Hahn-Hagerdal, B 6 ), while the arrows... % less isopropanol than the 824 ( 0.59 mol/mol ) novel sono-assisted acid of!, Hector, R., Binod, P., and approximately 46 % solvent extracted... Fermentation from grain was operated in a productivity and yield resulting from the fermentation of TYA! Journal of Microbiology & Biology Education, Microbiology and Molecular Biology Reviews engineered coli! System was examined PKC represents a potential source of fermentable sugars of palm kernel cake ( PKC ) ;.... Commercialized in 1918 using an Ultrospec 3100 Pro spectrophotometer ( Amersham Biosciences, Uppsala, Sweden ) butanol titer with. Concentration of total solvent was extracted also, 824 ( pIPA3 ) strain, but the difference was than. Cells in relation to the high total of sugars recovered from 2 %.. Remove the sediments were withdrawn at regular intervals, filtered using a water.! The culture of TYA ( control ) hydrolysis, ” Prog and de-oiled rice bran and rice! Lower panels show the glucose concentrations and pHs, and kept at 4 for! Seed when it grown to the Universiti Kebangsaan Malaysia for financing this work!
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