Comparative study of bioethanol production from sugarcane molasses by using Zymomonas mobilis and Saccharomyces cerevisiae

Khoja, Asif Hussain; Ali, Ehsan; Zafar, Kashaf; Ansari, Abeera A.; Nawar, Azra; Qayyum, Muneeb

doi:10.5897/ajb2015.14569

Cited by 32 publications

(15 citation statements)

References 8 publications

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“…Sulfahri et al (2011) obtained 9.70% of ethanol from Spirogyra with fermentation by Zymomonas mobilis and S. cereviceae after 96 h (4 days). The present result is also higher than that obtained by Asif et al (2015), who obtained 9.3 (v/v) and 8.3% (v/v) of ethanol from sugarcane molasses using Z. mobilis and S. cerevisiae, respectively. It is comparable with the report by Adiotomre (2015) of 23% ethanol from 50 g of substrate using Gloeophyllum sepiarium and Pleurotus ostreatus for hydrolysis of the peels and Z. mobillis and S. cerevisiae for fermentation…”

Section: Resultscontrasting

confidence: 79%

Bioethanol production from cassava peels using different microbial inoculants

Chibuzor¹,

Uyoh²,

Igile³

2016

Afr. J. Biotechnol.

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The potential of bioethanol production using different microbial inoculants for the simultaneous saccharification and fermentation of cassava peels from three cassava cultivars was investigated. Peels obtained from three cassava cultivars namely TME 0505, TME 419 and TME 4779, were washed, dried in a laboratory air oven dryer at 120°C for 3 h, ground into a fine texture and sieved with 1.5 µ nylon sieve. The sieved material was cultured using the following inoculant combinations: A = Rhizopus nigricans + Saccharomyces cerevisiae; B = Aspergillus niger + Saccharomyces cerevisiae; C = Rhizopus nigricans + Aspergillus niger + Saccharomyces cerevisiae; D = Rhizopus nigricans + Spirogyra africana + Saccharomyces cerevisae; E = Aspergillus niger + Spirogyra africana + Saccharomyces cerevisiae. These combinations have not been tested before on cassava peels. The control was inoculated with S. cerevisiae only. The cultures were distilled on the 21 st day and the quantity of ethanol produced in each treatment group recorded. Results obtained showed significant differences (P<0.05) in the amount of ethanol produced and in its concentration among the five inoculants. Significant differences (P<0.05) were also obtained in ethanol yield from the three cassava varieties. Cassava peels from TME 4779 gave the highest ethanol yield of 14.46 ± 2.08 g/cm 3 using R. nigricans + S. africana+ S. cerevisiae. Similarly, cassava peels from TME 0505 gave the second highest ethanol yield of 13.33 ± 0.67 g/cm 3 using the same combination, namely R. nigricans + S. africana + S. cerevisiae. Low ethanol yields of 4.82 ± 1.00, 6.43 ± 0.58 and 7.77 ± 0.88 g/cm 3 were obtained from the cassava peels of TME 419, TME 0505 and TME 4779, respectively using S. cerevisiae alone. The yield reported in this study competes favorably with those reported from cassava peels, potato peels and millet husks using other inoculant treatments by other workers. Inoculants used in this study thus showed great potential for bioethanol production from cassava peels.

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Section: Resultscontrasting

confidence: 79%

Bioethanol production from cassava peels using different microbial inoculants

Chibuzor¹,

Uyoh²,

Igile³

2016

Afr. J. Biotechnol.

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“…Yeast, however, is an oval-shaped fungi that reproduces via budding and growing at temperatures of 30-36 C and pH values of 4.0-6.0. 20,21 Yeast also has carrying capacity of essential elements such as iron and copper that become lower during microbial growth and activation and affect cell activity when the pH exceeds the optimal value. 22 ORP and K/S change with pH in the KDB1 system as shown in Figure 4.…”

Section: Reducing Power According To Phmentioning

confidence: 99%

Indigo reduction by using microorganism: Comparison of reducing power between Dietzia sp. KDB1 and yeast (Saccharomyces cerevisiae)

Jung

Rhee

Shin

et al. 2023

Coloration Technology

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This study aims to develop microbial indigo reduction by comparing the reducing power between Dietzia sp. KDB1 and yeast (Saccharomyces cerevisiae) at some reduction conditions. Oxidation–reduction potential (ORP), colour strength (K/S), and fluorescence intensity (FI) were applied to evaluate the reduction level as a function of microorganism concentration, pH, and glucose addition at 30°C. For both of the microbial systems, ORP decreased further −20 mV and K/S increased more than two by adding glucose. The reduction level became higher slightly by adding glucose, which played a role of metabolite in both of the reduction systems. Overall, reduction level of the yeast system was about a half of KDB1 system at the same reduction condition of 45 mL volume, 15 g/L natural indigo, 6 g/L reducing agents, pH 10.0, 30°C and glucose added.

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“…Optimal conditions are temperature of 28°C and pH 4.5 (Dias et al, 2009). Asif et al (2015) used similar parameters i.e. temperature 30°C and pH 4.6 using S. cerevisiae.…”

Section: Fermentationmentioning

confidence: 99%

Bioprocessing Requirements for Bioethanol

Anderson

Rahman

2018

Handbook of Research on Microbial Tools for Environmental Waste Management

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This chapter discusses alternative energy sources and the advantages of biofuels over fossil fuels. It outlines the main steps of bioethanol production and suggests some alternative sources as potential feedstock. The core focus of this chapter is to examine new research which considers the use of agricultural waste as a feedstock for bioethanol production rather than conventional feedstocks such as sugarcane and corn. The advantages of sugarcane bagasse as a feedstock are discussed in detail and the bioprocessing requirements are studied in comparison to traditional methods that use sugarcane as the feedstock. The chapter concludes by briefly outlining further research that could potentially improve these processes.

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Comparative study of bioethanol production from sugarcane molasses by using Zymomonas mobilis and Saccharomyces cerevisiae

Cited by 32 publications

References 8 publications

Bioethanol production from cassava peels using different microbial inoculants

Bioethanol production from cassava peels using different microbial inoculants

Indigo reduction by using microorganism: Comparison of reducing power between Dietzia sp. KDB1 and yeast (Saccharomyces cerevisiae)

Bioprocessing Requirements for Bioethanol

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