Physiological difference during ethanol fermentation between calcium alginate-immobilized Candida tropicalis and Saccharomyces cerevisiae

Jamai, L

doi:10.1016/s0378-1097(01)00430-x

Cited by 11 publications

(17 citation statements)

References 13 publications

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“…Figure 3, obtained by scanning electron microscopy, shows the high level of microbial adhesion and also the morphological alterations presented by immobilized bacteria on the support after various fermentation cycles (Jamai et al, 2001).…”

Section: Free and Immobilized Biomass During The Support Reuse Cyclesmentioning

confidence: 99%

Zymomonas mobilis IMMOBILIZED ON LOOFA SPONGE AND SUGARCANE BAGASSE FOR LEVAN AND ETHANOL PRODUCTION USING REPEATED BATCH FERMENTATION

Santos

Cruz

2017

Braz. J. Chem. Eng.

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-Two experiments were carried out using loofa sponge and sugarcane bagasse as immobilization support. First a 2 (5-2) design of experiments was realized with the following independent variables: sucrose concentration; pH; incubation time and agitation. Based on the best results observed in this experiment, the capacity for reuse of the supports in subsequent fermentations was evaluated for 12 recycle days. Loofa sponge support was the best immobilization support and in the 2 (5-2) experiment, it showed 2.58 g.L -1 of immobilized cells and 19.13 g.L -1 of exopolysaccharide levan. Sugarcane bagasse showed the highest ethanol production (103.82 g.L -1 ). In the immobilization support recycling experiment, sugarcane bagasse was the most promising support since it showed cell viability up to the last fermentation cycle, confirmed by scanning electronic microscopy, also showing the largest values for immobilized biomass (3.23 g.L -1 ), levan (32.13 g.L -1 ), ethanol (148.18 g.L -1 ) and sucrose consumption (92.64%).

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Section: Free and Immobilized Biomass During The Support Reuse Cyclesmentioning

confidence: 99%

Zymomonas mobilis IMMOBILIZED ON LOOFA SPONGE AND SUGARCANE BAGASSE FOR LEVAN AND ETHANOL PRODUCTION USING REPEATED BATCH FERMENTATION

Santos

Cruz

2017

Braz. J. Chem. Eng.

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“…This method allowed the visualization of possible changes in the macrocapsule after the fermentation process. 34,42 …”

Section: Electron Microscopy Of Encapsulated Yeastmentioning

confidence: 99%

“…Molasses gave comparative ethanol productivity in comparison to glucose in the MSFBR. 27 For S. cerevisiae has been found that free and immobilized cells achieve complete fermentation at the same time, and the growth rate of suspended cells is lower than immobilized cells when ethanol concentration are higher than 0.42 M. 42 The aim of this study was to evaluate the use of lyophilized and calciumalginate-immobilized S. cerevisiae cells in the production of bioethanol by SSF of P. radiata wood chips pretreated by diluted sulfuric acid. 27 All culture media used in this study were autoclaved at 121ºC for 20 min.…”

Section: Introductionmentioning

confidence: 99%

Diluted Acid Pretreatment of Pinus Radiata for Bioethanol Production Using Immobilized Saccharomyces Cerevisiae Ir2-9 in a Simultaneous Saccharification and Fermentation Process

Franco¹,

Mendonça²,

Marcato

et al. 2011

J. Chil. Chem. Soc.

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The production of bioethanol from pretreated lignocellulosic materials requires the utilization of microorganisms adapted to ferment the materials in conditions were high consistency, temperatures and inhibitors concentrations were commonly found. The yeast immobilization in calcium alginate capsules has been reported to enhance the yeast protection and increase the efficiency in the fermentation process. In this work, it was investigated the use Saccharomyces cerevisiae immobilized in calcium alginate and its performance in simultaneous saccharification and fermentation (SSF) of diluted-acid-pretreated Pinus radiata. Results showed that when immobilized yeast was used, the bioethanol yield from pretreated wood was higher than with free yeast cells during a SSF process. Maximum ethanol yield obtained from the acid pretreated and milled wood chips was 153 L/ton wood, while from the hydrolysate fraction it was 18 L/ton wood. The sum of ethanol produced from dilute acid pretreated P. radiata for both solid and liquid fractions was 171 L ethanol/ton wood from a maximum theoretical of 236 L/ ton pretretated wood (or 72% of conversion).

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“…tropicalis YMEC14 was cultured in Bio£o 2000 fermenter with a 1.3 l working volume of the appropriate medium. Growth conditions and cell immobilization are conducted at the appropriate temperature as previously described [14]. Washed beads are added to Bio£o fermenter containing OMW broth with or without hexadecane.…”

Section: Cell Immobilization and Cod Analysismentioning

confidence: 99%

Biodegradation of polyphenols with immobilized Candida tropicalis under metabolic induction

Ettayebi

Errachidi

Jamai

et al. 2003

FEMS Microbiology Letters

100

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During olive oil production, large quantities of olive mill wastewater (OMW) are produced. This wastewater material, containing a high level of phenolic compounds, poses a serious environmental problem in almost all Mediterranean countries. Candida tropicalis YMEC14 was used as an extremophile strain to design an aerobic biotreatment process to detoxify OMW and reduce its polluting organic load. The process was enhanced by directing yeast metabolism towards biodegradation pathways using hexadecane as co-metabolite and by immobilizing yeast cells in calcium alginate beads. Under immobilization conditions, C. tropicalis YMEC14 grown at 40 ‡C in OMW supplemented with hexadecane resulted in 69.7%, 69.2% and 55.3% reduction of chemical oxygen demand, monophenols and polyphenols, respectively, after a 24-h fermentation cycle.

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Physiological difference during ethanol fermentation between calcium alginate-immobilized Candida tropicalis and Saccharomyces cerevisiae

Cited by 11 publications

References 13 publications

Zymomonas mobilis IMMOBILIZED ON LOOFA SPONGE AND SUGARCANE BAGASSE FOR LEVAN AND ETHANOL PRODUCTION USING REPEATED BATCH FERMENTATION

Zymomonas mobilis IMMOBILIZED ON LOOFA SPONGE AND SUGARCANE BAGASSE FOR LEVAN AND ETHANOL PRODUCTION USING REPEATED BATCH FERMENTATION

Diluted Acid Pretreatment of Pinus Radiata for Bioethanol Production Using Immobilized Saccharomyces Cerevisiae Ir2-9 in a Simultaneous Saccharification and Fermentation Process

Biodegradation of polyphenols with immobilized Candida tropicalis under metabolic induction

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