Producing bioethanol from cellulosic hydrolyzate via co-immobilized cultivation strategy

Liu, Yu-Kuo; Yang, Chun-Yu; Chen, Wei‐Chuan; Wei, Yuhong

doi:10.1016/j.jbiosc.2012.03.005

Cited by 17 publications

(9 citation statements)

References 32 publications

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“…The higher ethanol yield by the combination of T. ressei and C. molischiana than by the combination of T. ressei and S. cerevisiae can be due to the additional consumption by C. molischiana of reducing sugars in addition to glucose produced by T. ressei, while S. cerevisiae can utilize only glucose. Although a high ethanol yield of 41% was reported using metabolically engineered strains of Clostridium thermocellum and Thermoanaerobacterium saccharolyticum [24], the ethanol yield (20%) obtained in this study is similar to or higher than previously reported for wild-type strains [25][26][27][28]. It is noteworthy that C. molischiana and S. cerevisiae can perform ethanol fermentation in the presence of T. reesei.…”

Section: Resultssupporting

confidence: 70%

Comparison of Bioethanol Production by Candida molischiana and Saccharomyces cerevisiae from Glucose, Cellobiose, and Cellulose

Zheng¹,

Negi²,

Khomlaem³

et al. 2019

Journal of Microbiology and Biotechnology

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Bioethanol has attracted much attention in recent decades as a sustainable and environmentally friendly alternative energy source. In this study, we compared the production of bioethanol by Candida molischiana and Saccharomyces cerevisiae at different initial concentrations of cellobiose and glucose. The results showed that C. molischiana can utilize both glucose and cellobiose, whereas S. cerevisiae can only utilize glucose. The ethanol yields were 43-51% from different initial concentrations of carbon source. In addition, different concentrations of microcrystalline cellulose (Avicel) were directly converted to ethanol by a combination of Trichoderma reesei and two yeasts. Cellulose was first hydrolyzed by a fully enzymatic saccharification process using T. reesei cellulases, and the reducing sugars and glucose produced during the process were further used as carbon source for bioethanol production by C. molischiana or S. cerevisiae. Sequential culture of T. reesei and two yeasts revealed that C. molischiana was more efficient for bioconversion of sugars to ethanol than S. cerevisiae. When 20 g/l Avicel was used as a carbon source, the maximum reducing sugar, glucose, and ethanol yields were 42%, 26%, and 20%, respectively. The maximum concentrations of reducing sugar, glucose, and ethanol were 10.9, 8.57, and 5.95 g/l, respectively, at 120 h by the combination of T. reesei and C. molischiana from 50 g/l Avicel.

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Section: Resultssupporting

confidence: 70%

Comparison of Bioethanol Production by Candida molischiana and Saccharomyces cerevisiae from Glucose, Cellobiose, and Cellulose

Zheng¹,

Negi²,

Khomlaem³

et al. 2019

Journal of Microbiology and Biotechnology

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“…Because 20 g/L of initial cellulose was used, the total yields of reducing sugar and glucose from cellulose were 40% and 23%, respectively. This is higher than a previous report using carboxymethyl cellulose (CMC) as the carbon source and performed in T. reesei with a total yield of 25.7% reduction sugar [17].…”

Section: Resultsmentioning

confidence: 56%

“…from Avicel [23]. The lower ethanol yield of 5.6% obtained by co-culture of T. reesei with Aspergillus niger and Zymmomonas mobilis from CMC [17] suggests that C. molischiana may have superior performance to Z. mobilis for ethanol production using some cellulose hydrolysates as carbon sources.…”

mentioning

confidence: 99%

Direct ethanol production from cellulose by consortium of Trichoderma reesei and Candida molischiana

Alkotaini

Salunke

et al. 2019

Green Processing and Synthesis

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Industrial cellulosic ethanol production is a challenge due to the high cost of cellulases for hydrolysis when lignocellulosic materials are used as feedstock. In this study, direct ethanol production from cellulose was performed by consortium of Trichoderma reesei and Candida molischiana. Cellulose was hydrolyzed by a fully enzymatic saccharification process using Trichoderma reesei cellulases. The produced reducing sugar was further utilized by Candida molischiana for ethanol production. Because the optimal temperature for the cellulase system is approximately 50°C, the effect of temperature rise from 30°C to 50°C on cellulose hydrolysis was investigated. The results showed that the temperature rise from 30°C to 50°C after 36 h of cultivation was the best for reducing sugar and glucose production. Under these conditions, the maximum concentrations of reducing sugar and glucose produced by T. reesei were 8.0 g/L and 4.6 g/L at 60 h, respectively. The maximum production of ethanol by C. molischiana was 3.0 g/L after 120 h.

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“…Los tipos de sustratos utilizados para el proceso esencialmente contienen un alto contenido de carbohidratos, en general estos son variados, por ejemplo, melazas de caña y de remolacha, suero de leche, residuos agroindustriales: yuca, bagazo de caña, cáscara de café, cáscara de nuez de karité, salvado de trigo, pulpa de manzana, piña, cáscara de kiwi, pulpa de uva, etc. (Velásquez, Beltrán, Padilla, & Giraldo, 2010); (Areguamen, Amenaghawon, Agbroko, Ogbeide, & Okieimen, 2013); (Amenaghawon, Nwaru, Aisien, Ogbeide, & Okieimen, 2013); (Barrington, Kim, Wang, & Kim, 2009); (Bayona, 2008); (Gurpreet, Satinder, Surinder, & Mausam, 2013); (Femi-Ola & Atere, 2013); (Kareem, Akpan, & Alebiowu, 2010); (Kobomoje, Mohammed, & Omojasola, 2013); (Liu, Yang, Chen, & Wei, 2012), (Sukesh, Jayasuni, Gokul, & Anu, Memorias VII Congreso de la Red Latinoamericana de Ciencias Ambientales 2013) y (Vasanthabharathi, N., & Jayalakshmi, 2013). Con la finalidad de obtener el mejor rendimiento durante la fermentación, es necesario optimizar algunos de los factores anteriormente mencionados (Amenaghawon, Nwaru, Aisien, Ogbeide, & Okieimen, 2013).…”

Section: Introduccionunclassified

Memorias del VII Congreso de la Red Latinoamericana de Ciencias Ambientales

Guzmán¹

2013

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Producing bioethanol from cellulosic hydrolyzate via co-immobilized cultivation strategy

Cited by 17 publications

References 32 publications

Comparison of Bioethanol Production by Candida molischiana and Saccharomyces cerevisiae from Glucose, Cellobiose, and Cellulose

Comparison of Bioethanol Production by Candida molischiana and Saccharomyces cerevisiae from Glucose, Cellobiose, and Cellulose

Direct ethanol production from cellulose by consortium of Trichoderma reesei and Candida molischiana

Memorias del VII Congreso de la Red Latinoamericana de Ciencias Ambientales

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