Abstract
In the present work, a systematic study has been performed to optimize the pretreatment of lignocellulosic biomass (wheat bran (WB)) to maximize fermentable sugar content by using an effective combination of high-pressure and deep eutectic solvents (DES). First, DES type and molar ratios were compared to determine the most suitable condition for the pretreatment at high-pressure reactor (HPR). This was performed with a two-stage pretreatment. WB samples were mixed with choline chloride (ChCl):glycerol and ChCl:acetic acid at different molar ratios (1:2, 1:4, and 1:6) and treated at 80 °C for 24 h in a water bath (conventional DES treatment). Then, DES-applied biomass was mixed with 1.99% (v/v) sulphuric acid solution at 121 °C in an autoclave for 1 min. ChCl:glycerol (1:2 molar ratio) and ChCl:acetic acid (1:2 molar ratio) provided the highest fermentable sugar concentrations (FSCs), 72.54 and 69.77 g/L, respectively . Therefore, the experiments in the high-pressure reactor (HPR) were continued with the aforementioned DES types. The effects of temperature (T, 100–150 °C), time (t, 20–40 min) and liquid-to-solid ratio (LSR, 4–10 w/w) on the FSCs in the HPR were examined using Box–Behnken Design (BBD) of response surface methodology (RSM). FSC and total phenolic substance concentration (TPC) were selected as dependent variables. In addition, the levels of sugars (glucose, xylose, fructose, sucrose, maltose and arabinose) and furans (furfural and 5-hydroxymethylfurfural (HMF)) in the samples were also measured after the pretreatment. Based on the results, the optimal pretreatment conditions were found as 130 °C, 27 min and 4 w/w liquid-to-solid ratio with ChCl: glycerol (1:2). Under optimal conditions, FSC and TPC were 75.43 g/L and 0.41 g GA/L. The results showed that DES pretreatment in the HPR is a promising technology that can be successfully implemented for the pretreatment of lignocellulosic biomass resulting in high sugar yields.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs13399-023-04457-6/MediaObjects/13399_2023_4457_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs13399-023-04457-6/MediaObjects/13399_2023_4457_Fig2_HTML.png)
Similar content being viewed by others
Data availability
Data are available on request from the authors.
Change history
04 July 2023
A Correction to this paper has been published: https://doi.org/10.1007/s13399-023-04564-4
References
Zhang YHP, Ding SY, Mielenz JR, Cui JB, Elander RT, Laser M, Himmel ME, McMillan JR, Lynd LR (2007) Fractionating recalcitrant lignocellulose at modest reaction conditions. Biotechnol Bioeng 97(2):214–223
Zhou M, Tian X (2022) Development of different pretreatments and related technologies for efficient biomass conversion of lignocellulose. Int J Biol Macromol 202:256–268
Wu W-H, Hung W-C, Lo K-Y, Chen Y-H, Wan H-P, Cheng K-C (2016) Bioethanol production from taro waste using thermo-tolerant yeast Kluyveromyces marxianus K21. Bioresour Technol 201:27–32
Si M, Sillanpää M, Zhuo S, Zhang J, Liu M, Wang S, Gao C, Chai L, Zhao F, Shi Y (2020) Phase separation of co-solvent promotes multiple bio-nanomaterials conversion from natural lignocellulose. Ind Crops Prod 152:112469
Arora A, Nandal P, Singh J, Verma ML (2020) Nanobiotechnological advancements in lignocellulosic biomass pretreatment. Mater Sci Energy Technol 3:308–318
Germec M, Demirel F, Tas N, Ozcan A, Yilmazer C, Onuk Z, Turhan I (2017) Microwave-assisted dilute acid pretreatment of different agricultural bioresources for fermentable sugar production. Cellulose 24(10):4337–4353
Ravindran R, Jaiswal AK (2016) A comprehensive review on pre-treatment strategy for lignocellulosic food industry waste: challenges and opportunities. Bioresour Technol 199:92–102
Mankar AR, Pandey A, Modak A, Pant KK (2021) Pretreatment of lignocellulosic biomass: a review on recent advances. Bioresour Technol 334:125235
Mamilla JLK, Novak U, Grilc M, Likozar B (2019) Natural deep eutectic solvents (DES) for fractionation of waste lignocellulosic biomass and its cascade conversion to value-added bio-based chemicals. Biomass Bioenergy 120:417–425
Chen H, Liu J, Chang X, Chen D, Xue Y, Liu P, Lin H, Han S (2017) A review on the pretreatment of lignocellulose for high-value chemicals. Fuel Process Technol 160:196–206
Seidl PR, Goulart AK (2016) Pretreatment processes for lignocellulosic biomass conversion to biofuels and bioproducts. Curr Opin Green Sustain Chem 2:48–53
Rezania S, Oryani B, Cho J, Talaiekhozani A, Sabbagh F, Hashemi B, Rupani PF, Mohammadi AA (2020) Different pretreatment technologies of lignocellulosic biomass for bioethanol production: an overview. Energy 199:117457
Haghighi Mood S, Hossein Golfeshan A, Tabatabaei M, Salehi Jouzani G, Najafi GH, Gholami M, Ardjmand M (2013) Lignocellulosic biomass to bioethanol, a comprehensive review with a focus on pretreatment. Renew Sustain Energy Rev 27:77–93
Florindo C, Oliveira FS, Rebelo LPN, Fernandes AM, Marrucho IM (2014) Insights into the synthesis and properties of deep eutectic solvents based on cholinium chloride and carboxylic acids. ACS Sustain Chem Eng 2(10):2416–2425
Isci A, Erdem GM, Bagder Elmaci S, Sakiyan O, Lamp A, Kaltschmitt M (2020) Effect of microwave-assisted deep eutectic solvent pretreatment on lignocellulosic structure and bioconversion of wheat straw. Cellulose 27(15):8949–8962
Martins MA, Pinho SP, Coutinho JA (2019) Insights into the nature of eutectic and deep eutectic mixtures. J Solution Chem 48(7):962–982
Isci A, Kaltschmitt M (2022) Recovery and recycling of deep eutectic solvents in biomass conversions: a review. Biomass Convers. Biorefinery 12(1):197–226
**an X, Fang L, Zhou Y, Li B, Zheng X, Liu Y, Lin X (2022) Integrated bioprocess for cellulosic ethanol production from wheat straw: new ternary deep-eutectic-solvent pretreatment, enzymatic saccharification, and fermentation. Fermentation 8(8):371
Francisco M, Van Den Bruinhorst A, Kroon MC (2012) New natural and renewable low transition temperature mixtures (LTTMs): screening as solvents for lignocellulosic biomass processing. Green Chem 14(8):2153–2157
Xu H, Peng J, Kong Y, Liu Y, Su Z, Li B, Song X, Liu S, Tian W (2020) Key process parameters for deep eutectic solvents pretreatment of lignocellulosic biomass materials: a review. Bioresour Technol 310:123416
Ho MC, Wu TY (2020) Sequential pretreatment with alkaline hydrogen peroxide and choline chloride:copper (II) chloride dihydrate – synergistic fractionation of oil palm fronds. Bioresour Technol 301:122684
Lin S-P, Kuo T-C, Wang H-T, Ting Y, Hsieh C-W, Chen Y-K, Hsu H-Y, Cheng K-C (2020) Enhanced bioethanol production using atmospheric cold plasma-assisted detoxification of sugarcane bagasse hydrolysate. Bioresour Technol 313:123704
Wang R, Wang K, Zhou M, Xu J, Jiang J (2021) Efficient fractionation of moso bamboo by synergistic hydrothermal-deep eutectic solvents pretreatment. Bioresour Technol 328:124873
Gunny AAN, Arbain D, Nashef EM, Jamal P (2015) Applicability evaluation of Deep Eutectic Solvents–Cellulase system for lignocellulose hydrolysis. Bioresour Technol 181:297–302
Locci E, Laconi S, Pompei R, Scano P, Lai A, Marincola FC (2008) Wheat bran biodegradation by Pleurotus ostreatus: a solid-state carbon-13 NMR study. Bioresour Technol 99(10):4279–4284
Germec M, Ozcan A, Turhan I (2019) Bioconversion of wheat bran into high value-added products and modelling of fermentations. Ind. Crops Prod 139:111565
Aparicio E, Rodríguez-Jasso RM, Pinales-Márquez CD, Loredo-Treviño A, Robledo-Olivo A, Aguilar CN, Kostas ET, Ruiz HA (2021) High-pressure technology for Sargassum spp biomass pretreatment and fractionation in the third generation of bioethanol production. Bioresour Technol 329:124935
Garai D, Kumar V (2013) A Box–Behnken design approach for the production of xylanase by Aspergillus candidus under solid state fermentation and its application in saccharification of agro residues and Parthenium hysterophorus L. Ind Crops Prod 44:352–363
Silva TP, Ferreira AN, de Albuquerque FS, de Almeida Barros AC, da Luz JMR, Gomes FS, Pereira HJV (2021) Box–Behnken experimental design for the optimization of enzymatic saccharification of wheat bran. Biomass Convers Biorefinery 2021:1–8. https://doi.org/10.1007/s13399-021-01378-0
Germec M, Ozcan A, Yilmazer C, Tas N, Onuk Z, Demirel F, Turhan I (2017) Ethanol fermentation from microwave-assisted acid pretreated raw materials by Scheffersomyces stipitis. AgroLife Sci J 6(1):112–118
Abbott AP, Boothby D, Capper G, Davies DL, Rasheed RK (2004) Deep eutectic solvents formed between choline chloride and carboxylic acids: versatile alternatives to ionic liquids. J Am Chem Soc 126(29):9142–9147
Xu G-C, Ding J-C, Han R-Z, Dong J-J, Ni Y (2016) Enhancing cellulose accessibility of corn stover by deep eutectic solvent pretreatment for butanol fermentation. Bioresour Technol 203:364–369
Jablonský M, Škulcová A, Kamenská L, Vrška M, Šima J (2015) Deep eutectic solvents: fractionation of wheat straw. BioResources 10(4):8039–8047
Miller GL (1959) Use of dinitrosalicylic acid reagent for determination of reducing sugar. Anal Chem 31(3):426–428
Germec M, Kartal FK, Bilgic M, Ilgin M, Ilhan E, Güldali H, Isci A, Turhan I (2016) Ethanol production from rice hull using Pichia stipitis and optimization of acid pretreatment and detoxification processes. Biotechnol Prog 32(4):872–882
Germec M, Tarhan K, Yatmaz E, Tetik N, Karhan M, Demirci A, Turhan I (2016) Ultrasound-assisted dilute acid hydrolysis of tea processing waste for production of fermentable sugar. Biotechnol Prog 32(2):393–403
Singleton VL, Orthofer R, Lamuela-Raventós RM (1999) Analysis of total phenols and other oxidation substrates and antioxidants by means of folin-ciocalteu reagent. Methods Enzymol, Elsevier 299:152–178
Palmarola-Adrados B, Chotěborská P, Galbe M, Zacchi G (2005) Ethanol production from non-starch carbohydrates of wheat bran. Bioresour Technol 96(7):843–850
Chotěborská P, Palmarola-Adrados B, Galbe M, Zacchi G, Melzoch K, Rychtera M (2004) Processing of wheat bran to sugar solution. J Food Eng 61(4):561–565
Prado JM, Lachos-Perez D, Forster-Carneiro T, Rostagno MA (2016) Sub- and supercritical water hydrolysis of agricultural and food industry residues for the production of fermentable sugars: a review. Food Bioprod Process 98:95–123
Moreira BP, Draszewski CP, Celante D, Brondani L, Lachos-Perez D, Mayer FD, Abaide ER, Castilhos F (2022) Defatted rice bran pretreated with deep eutectic solvents and sequential use as feedstock for subcritical water hydrolysis. Bioresour Technol 351:127063
Chandel AK, Kapoor RK, Singh A, Kuhad RC (2007) Detoxification of sugarcane bagasse hydrolysate improves ethanol production by Candida shehatae NCIM 3501. Bioresour Technol 98(10):1947–1950
Mussatto SI, Roberto IC (2004) Alternatives for detoxification of diluted-acid lignocellulosic hydrolyzates for use in fermentative processes: a review. Bioresour Technol 93(1):1–10
Jönsson LJ, Martín C (2016) Pretreatment of lignocellulose: formation of inhibitory by-products and strategies for minimizing their effects. Bioresource tech 199:103–112
Steinbach D, Kruse A, Sauer J (2017) Pretreatment technologies of lignocellulosic biomass in water in view of furfural and 5-hydroxymethylfurfural production-a review. Biomass Convers Biorefin 7:247–274
Iwaki A, Kawai T, Yamamoto Y, Izawa S (2013) Biomass conversion inhibitors furfural and 5-hydroxymethylfurfural induce formation of messenger RNP granules and attenuate translation activity in Saccharomyces cerevisiae. Appl Environ Microbiol 79(5):1661–1667
Funding
This work was supported by the Akdeniz University Research Foundation [Grant number #FBA-2023-6253]. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors declare the following financial interests/personal relationships which may be considered as potential competing interests.
Author information
Authors and Affiliations
Contributions
All the authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by HGHY, IY, AIY and IT. The first draft of the manuscript was written by HGHY, and all the authors commented on the previous versions of the manuscript. All the authors read and approved the final manuscript. Hatice Gozde Hosta Yavuz: writing-original draft, visualization and investigation. İbrahim Yavuz: conceptualization, ınvestigation and resources. Asli İsci Yakan: writing—review and editing, resources and methodology. Irfan Turhan: writing—review and editing, resources, supervision, conceptualization and methodology.
Corresponding author
Ethics declarations
Ethical approval
There are no human and/ or animal studies.
Competing interests
The authors declare no competing interests.
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
The original online version of this article was revised: Due to incorrect format of the first author's name Hatice Gozde Hosta Yavuz.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Hosta Yavuz, H.G., Yavuz, I., Yakan, A.I. et al. Conversion of wheat bran into fermentable sugars using deep eutectic solvent pretreatment in a high-pressure reactor. Biomass Conv. Bioref. (2023). https://doi.org/10.1007/s13399-023-04457-6
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/s13399-023-04457-6