scholarly journals Potential Production of Ethanol by Saccharomyces cerevisiae Immobilized and Coimmobilized with Zymomonas mobilis: Alternative for the Reuse of a Waste Organic

2017 ◽  
Author(s):  
Alejandro Ruiz Marin ◽  
Yunuen Canedo Lopez ◽  
Asteria Narvaez Garcia ◽  
Juan Carlos Robles Heredia ◽  
Jose del Carmen Zavala Loria
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Zymomonas Mobilis ◽  
Potential Production

scholarly journals Food Grade Ethanol Production Process of Sorghum Stem Juice Using Immobilized Cells Technique

2015 ◽  
Vol 9 (7) ◽  
pp. 8 ◽  
Author(s):  
Tri Widjaja ◽  
Ali Altway ◽  
Arief Widjaja ◽  
Umi Rofiqah ◽  
Rr Whiny Hardiyati Erlian
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Molecular Sieve ◽  
Zymomonas Mobilis ◽  
Immobilized Cells ◽  
Ethanol Yield ◽  
Continuous Fermentation ◽  
Continuous Process ◽  
Pichia Stipitis ◽  
Batch Process ◽  
Food Grade

One form of economic development efforts for waste utilization in rural communities is to utilize stem sorghum to produce food grade ethanol. Sorghum stem juice with 150 g/L of sugar concentration was fermented using conventional batch process and cell immobilization continuous process with K-carrageenan as a supporting matrix. The microorganism used was Mutated Zymomonas Mobilis to be compared with a mixture of Saccharomyces Cerevisiae and Pichia Stipitis, and a mixture of Mutated Zymomonas Mobilis and Pichia Stipitis. Ethanol in the broth, result of fermentation process, was separated in packed distillation column. Distilate of the column, still contain water and other impurities, was flown into molecular sieve for dehydration and activated carbon adsorption column to remove the other impurities to meet food grade ethanol specification. The packing used in distillation process was steel wool. For batch fermentation, the fermentation using a combination of Saccharomyces Cerevisiae and Pichia Stipitis produced the best ethanol with 12.07% of concentration, where the yield and the productivity were 63.49%, and 1.06 g/L.h, respectively. And for continuous fermentation, the best ethanol with 9.02% of concentration, where the yield and the productivity were 47.42% and 174.27 g/L.h, respectively, is obtained from fermentation using a combination of Saccharomyces Cerevisiae and Pichia Stipitis also. Fermentation using combination microorganism of Saccharomyces Cerevisiae and Pichia Stipitis produced higher concentration of ethanol, yield, and productivity than other microorganisms. Distillation, molecular sieve dehydration and adsorption process is quite successful in generating sufficient levels of ethanol with relatively low amount of impurities.

Comparison of different carriers for adsorption of Saccharomyces cerevisiae and Zymomonas mobilis

1987 ◽  
Vol 9 (5) ◽  
pp. 272-276 ◽  
Author(s):  
A. Mustranta ◽  
J. Pere ◽  
K. Poutanen
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Zymomonas Mobilis

scholarly journals Process Fermentation of Filtrate Bamboo with Saccharomyces Cerevisiae and Zymomonas Mobilis

2019 ◽  
Vol 1295 ◽  
pp. 012033
Author(s):  
N K Sari ◽  
D Ernawati
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Zymomonas Mobilis

Comparison of Bacterial and Yeast Ethanol Fermentation Yield from Rice Straw

2011 ◽  
Vol 347-353 ◽  
pp. 2541-2544
Author(s):  
Benjarat Laobussararak ◽  
Warawut Chulalaksananukul ◽  
Orathai Chavalparit
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Enzymatic Hydrolysis ◽  
Rice Straw ◽  
Zymomonas Mobilis ◽  
Ethanol Yield ◽  
Sugar Content ◽  
Alkali Pretreatment ◽  
Yeast Saccharomyces Cerevisiae ◽  
Pretreatment Condition ◽  
Theoretical Yield

This study was to investigate the fermentation of rice straw using various microorganisms, i.e., the bacterium Zymomonas mobilis, a distillery yeast Saccharomyces cerevisiae and a co-culture of Zymomonas mobilis and Saccharomyces cerevisiae. Rice straw was pretreated with alkaline and followed by enzymatic hydrolysis using cellulase before fermentation by the bacterium and a distillery yeast. Results show that alkali pretreatment is appropriate for rice straw since this pretreatment condition can produce the maximum cellulose of 88.96% and reducing sugar content of 9.18 g/l. Furthermore, the ethanol yield after enzymatic hydrolysis (expressed as % theoretical yield) was 15.94-19.73% for the bacterium, 20.48-35.70% for yeast and 21.56-29.89% for co-culture. Therefore, the distillery yeast was a suitable microorganism for ethanol production from rice straw.

scholarly journals Paradigm for industrial strain improvement identifies sodium acetate tolerance loci in Zymomonas mobilis and Saccharomyces cerevisiae

2010 ◽  
Vol 107 (23) ◽  
pp. 10395-10400 ◽  
Author(s):  
S. Yang ◽  
M. L. Land ◽  
D. M. Klingeman ◽  
D. A. Pelletier ◽  
T.-Y. S. Lu ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Zymomonas Mobilis ◽  
Sodium Acetate ◽  
Strain Improvement ◽  
Industrial Strain

scholarly journals Production of ethanol from mesquite (Prosopis juliflora (SW) D.C.) pods mash by Zymomonas mobilis and Saccharomyces cerevisiae

2010 ◽  
Vol 13 (5) ◽  
pp. 0-0 ◽  
Author(s):  
Celiane Gomes Maia da Silva ◽  
Tânia Lúcia Montenegro Stamford ◽  
Samara Alvachian Cardoso de Andrade ◽  
Evandro Leite de Souza ◽  
Janete Magali de Araújo
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Zymomonas Mobilis ◽  
Prosopis Juliflora

scholarly journals PRODUCCIÓN DE ETANOL CON CÉLULAS INMOVILIZADAS DE Zymomonas mobilis spp.

2002 ◽  
Author(s):  
Adriana Matiz ◽  
Claudia Torres ◽  
Raul Potou
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Zymomonas Mobilis

La producción de etanol en Colombia representa uno de los renglones económicos más importantes, producido como alcohol antiséptico, solvente y aditivo para la gasolina. El objetivo de este trabajo fue aumentar la eficiencia en la producción de etanol y encontrar microorganismos que representen una alternativa en producción frente a Saccharomyces cerevisiae. Cepas de Zymomonas mobilis, var. mobilis (Zmm1 y Zmm2) y pomaceae (Zmp1 y Zmp2), fueron aisladas de muestras de melazas de caña con el propósito de realizar un estudio comparativo con resultados reportados anteriormente a partir de células libres. Fue utilizada una cepa control Zymomonas mobilis mobilis (CETC) 560, considerada alta productora de etanol. Células libres en fermentador de 1L y se inmovilizaron en matriz de alginato de calcio. Al final del proceso de fermentación fue determinada la producción de etanol por picnometría. Los resultados revelaron a una concentración de inmovilización del 2% p/v, un rendimiento de 92.1%, por parte de las cepas nativas Zmm1 y Zmm2 y de 97.85%, con Zmm 560, comparado con los rendimientos de etanol obtenidos a partir de células libres, de 72.9% por parte de Zmm1 y 76.74% con Zmm 560. El análisis de estos datos, demuestran las ventajas de la utilización de células inmovilizadas frente a células libres, en procesos de fermentación y representan grandes posibilidades para el desarrollo Biotecnológico de nuestro país, ya que permiten considerar a Zymomonas mobilis sp., como alternativa para producción de etanol a escala industrial, especialmente las cepas autóctonas Zmm1 y Zmm2 que hicieron parte de este estudio.

scholarly journals KINERJA MIKROBA Zymomonas mobilis DAN Saccharomyces cerevisiae UNTUK MENGURAIKAN HIDROLISAT TONGKOL JAGUNG MENJADI BIOETANOL DENGAN PENGARUH WAKTU FERMENTASI DAN RASIO PENAMBAHAN MIKROBA

2017 ◽  
Vol 6 (2) ◽  
pp. 1-6
Author(s):  
Fatimah ◽  
Deralisa Ginting ◽  
Veronica Sirait
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Gas Chromatography ◽  
Aspergillus Niger ◽  
Trichoderma Reesei ◽  
Zymomonas Mobilis ◽  
Alternative Fuel ◽  
Fermentation Time ◽  
Corn Cobs ◽  
Hydrolysis Of ◽  
Bioethanol Yield

Bioethanol from biomass is one of energy which  has a  potential as  alternative fuel. Bioethanol can be produced by using fungi or bacteria. The research was about  the performance of Zymomonas mobilis and Saccharomyces cerevisiae to change corn cobs hydrolyzate into bioethanol by adding microbes to the influence of time and ratio of  fermentation had been done. The hydrolyzate  were decomposition of corn cobs using Trichoderma reesei and Aspergillus niger. The purpose of this study was to know the conversion of  hydrolysis of corn cobs into bioethanol with variation time of fermentation (1 day, 3 days, 5 days, and 7 days) and rate of adding microbes  (Zymomonas mobilis : Saccharomyces cerevisiae = 1:1; 1:2 and 2:1) (v/v). The glucose from corn cobs hydrolyzate was 5,869 g/ml. Fermentation wass carried out at 25 0C. Bioethanol which obtained from this study was investigated using gas chromatography. The optimum bioethanol yield was equal to 6,31% by using Zymomonas mobilis : Saccharomyces cerevisiae (2:1) and at the 3 days  fermentation time.

Sign in / Sign up

Export Citation Format

Share Document