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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/6414

Title: Activity of Zymomonas   species in palm-sap obtained from three areas in Edo State, Nigeria.
Authors: OBIRE
Issue Date: 31-Dec-2005
Publisher: World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
Citation: Journal of Applied Sciences and Environmental Management (ISSN: 1119-8362) Vol 9 Num 1
Abstract: The bacterium Zymomonas mobilis   was isolated from fresh palm-sap samples from three different locations as to determine the contribution of the bacterial isolate to alcohol production in palm-wine. Carbohydrate (sugar) fermentation, alcohol tolerance, and growth of the bacterium at different pH and temperature values were determined; and a comparison of sugar fermentation by Z. mobilis and Saccharomyces cerevisiae   was also determined. Z. mobilis contributes much to the fermentation of palm-wine due to its ability to ferment sucrose, glucose and fructose which are the main sugars in palm-sap. The bacterium reached its maximum density of 2.72 x 107 cells/ml between 12 and 15 hrs after tapping of the palm-sap. Z. mobilis is acid and alcohol tolerant being able to grow at pH values between 4.0 and 7.0 and in alcohol concentration of between 2.5% and 15% respectively. Z. mobilis was also found to ferment sugars at a faster rate than Saccharomyces cerevisiae. Statistical analysis of the data obtained using ANOVA showed that there is no significant difference at p = 0.05 level of significance in the growth of isolates of Z. mobilis obtained from the three locations under different pH, alcohol and temperature values. @JASEM
URI: http://hdl.handle.net/1807/6414
Other Identifiers: http://www.bioline.org.br/abstract?id=ja05005
Rights: © 2005 Journal of Applied Sciences & Environmental Management
Appears in Collections:Bioline International Legacy Collection

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