Investigation of the toxicity of the ionic liquid 1-butyl-3-methylimidazolium chloride to Saccharomyces cerevisiae AY93161 for lignocellulosic ethanol production

Zhu, Shengli; Yu, Peng; Lei, Mingke; Tong, Yanjie; Zheng, Lianxi; Zhang, Rui; Ji, Jun; Chen, Qiming; Wu, Yuanxin

doi:10.2478/pjct-2013-0029

Cited by 32 publications

(22 citation statements)

References 13 publications

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“…Yeast concentration was determined by the dry weight method [7]. Ethanol content was determined by gas chromatography [15] and the fermentable sugars concentration was estimated using the 3,5-dinitrosalicylic acid method [16].…”

Section: Methodsmentioning

confidence: 99%

“…The BMIMCl inhibits yeast growth and has a negative effect on ethanol production [7,8]. Under different fermentation conditions, the BMIMCl has a different influencing degree on the ethanol fermentation process [7,8].…”

Section: Effect Of Bmimcl On the Ethanol Fermentation Processmentioning

confidence: 99%

“…Under different fermentation conditions, the BMIMCl has a different influencing degree on the ethanol fermentation process [7,8]. In order to have a correct understanding on microcalorimetric data, the ethanol fermentation was carried out under the same conditions as the microcalorimetric measurement in this work.…”

Section: Effect Of Bmimcl On the Ethanol Fermentation Processmentioning

confidence: 99%

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Microcalorimetric Investigation of the Effect of the Ionic Liquid 1-Butyl-3-Methylimidazolium Chloride on the Fermentation of Saccharomyces cerevisiae AY93161 for Lignocellulosic Ethanol Production

Huang¹,

Jin²,

Feng³

et al. 2016

TOBIOTJ

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Abstract:The effects of ionic liquid 1-butyl-3-methylimidazolium chloride (BMIMCl) on the ethanol fermentation process of Saccharomyces cerevisiae AY93161 were investigated by using microcalorimetry. On the basis of microcalorimetric and process data, the thermokinetic parameters of the ethanol fermentation process at different BMIMCl concentrations from 0.001 to 5 gL -1 were calculated. Compared to the control, the BMIMCl caused a decreased value of the maximum specific growth rate µ m (from 0.226 to 0.105 h -1 ), and an increased value of the maximum specific produced heat rate p m (from 2.08 to 7.06 mWlg -1 ) and the total heat output H for producing 1 g ethanol (from 990 to 1871 Jg -1 ). The decreased µ m and increased p m and H led to lower final yeast concentration (from 3.85 to 2.39 gL -1 ) and ethanol concentration (from 40.3 to 25.1 gL -1 ). This gives useful information for improving the lignocellulosic ethanol production process using the ionic liquid technology.

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Section: Methodsmentioning

confidence: 99%

Section: Effect Of Bmimcl On the Ethanol Fermentation Processmentioning

confidence: 99%

Section: Effect Of Bmimcl On the Ethanol Fermentation Processmentioning

confidence: 99%

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Microcalorimetric Investigation of the Effect of the Ionic Liquid 1-Butyl-3-Methylimidazolium Chloride on the Fermentation of Saccharomyces cerevisiae AY93161 for Lignocellulosic Ethanol Production

Huang¹,

Jin²,

Feng³

et al. 2016

TOBIOTJ

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“…There are some reports that the remaining IL in the FRS has a negative effect on the subsequent ethanol fermentation process (Zhu et al 2013). In order to alleviate this negative effect, more research should be performed on controlling the remaining IL concentration in the FRS, developing more IL-tolerant micro-organisms, and improving the ethanol fermentation process.…”

Section: Challenges Of the Acid-catalyzed Hydrolysis Of Lignocellulosmentioning

confidence: 99%

Acid-Catalyzed Hydrolysis of Lignocellulosic Biomass in Ionic Liquids for Ethanol Production: Opportunities & Challenges

et al. 2015

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Lignocellulosic biomass (LB) is potentially a relatively inexpensive and abundant feedstock for ethanol production. One of the most challenging steps during the lignocellulosic ethanol production is to convert the carbohydrates in LB to the fermentable reducing sugars (FRS) in an economically viable and environmentally friendly way. The acidcatalyzed hydrolysis of LB in ionic liquids (ILs) has provided a promising technical tool to improve upon the traditional FRS production process. Compared to the conventional FRS production process from LB via the acid or enzymatic hydrolysis method, it has many advantages, such as a simplified process, mild reaction conditions, low acid consumption, and low equipment investment. However, there are still some technical challenges that need to be solved regarding its use at an industrial scale, for example, improving its reaction selectivity, developing effective methods to separate the FRS and ILs, and alleviating the negative effect of the remaining ILs in FRS on subsequent ethanol fermentation. This editorial will give a brief discussion about opportunities and challenges of the acid catalyzed hydrolysis of LB in ILs for ethanol production.

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“…Ionic liquid (IL) pretreatment of lignocellulosic materials has provided a new technical tool to improve lignocellulosic ethanol production (Zhu et al, 2013). The ionic liquid is also called a 'green solvent' and is a very good catalyst of the enzymatic hydrolysis reaction.…”

Section: Introductionmentioning

confidence: 99%

Influence of the crystalline structure of cellulose on the production of ethanol from lignocellulose biomass

Smuga‐Kogut¹,

Zgórska²,

Szymanowska³

2016

International Agrophysics

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A b s t r a c t. In recent years, much attention has been devoted to the possibility of using lignocellulosic biomass for energy. Bioethanol is a promising substitute for conventional fossil fuels and can be produced from straw and wood biomass. Therefore, the aim of this paper was to investigate the effect of 1-ethyl-3-methylimidazolium pretreatment on the structure of cellulose and the acquisition of reducing sugars and bioethanol from cellulosic materials. Material used in the study was rye straw and microcrystalline cellulose subjected to ionic liquid 1-ethyl-3-methylimidazolium pretreatment. The morphology of cellulose fibres in rye straw and microcrystalline cellulose was imaged prior to and after ionic liquid pretreatment. Solutions of ionic liquid-treated and untreated cellulosic materials were subjected to enzymatic hydrolysis in order to obtain reducing sugars, which constituted a substrate for alcoholic fermentation. An influence of the ionic liquid on the cellulose structure, accumulation of reducing sugars in the process of hydrolysis of this material, and an increase in ethanol amount after fermentation was observed. The ionic liquid did not affect cellulolytic enzymes negatively and did not inhibit yeast activity. The amount of reducing sugars and ethyl alcohol was higher in samples purified with 1-ethyl-3-methylimidazolium acetate. A change in the supramolecular structure of cellulose induced by the ionic liquid was also observed.

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Investigation of the toxicity of the ionic liquid 1-butyl-3-methylimidazolium chloride to Saccharomyces cerevisiae AY93161 for lignocellulosic ethanol production

Cited by 32 publications

References 13 publications

Microcalorimetric Investigation of the Effect of the Ionic Liquid 1-Butyl-3-Methylimidazolium Chloride on the Fermentation of Saccharomyces cerevisiae AY93161 for Lignocellulosic Ethanol Production

Microcalorimetric Investigation of the Effect of the Ionic Liquid 1-Butyl-3-Methylimidazolium Chloride on the Fermentation of Saccharomyces cerevisiae AY93161 for Lignocellulosic Ethanol Production

Acid-Catalyzed Hydrolysis of Lignocellulosic Biomass in Ionic Liquids for Ethanol Production: Opportunities & Challenges

Influence of the crystalline structure of cellulose on the production of ethanol from lignocellulose biomass

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