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Monitoring the effect of pH on bacterial cellulose production and acetobacter xylinum 0416 growth in a Rotary Discs Reactor

Zahan, Khairul Azly and Pa'e, Norhayati and Muhamad, Ida Idayu (2015) Monitoring the effect of pH on bacterial cellulose production and acetobacter xylinum 0416 growth in a Rotary Discs Reactor. Arabian Journal for Science and Engineering, 40 (7). pp. 1881-1885. ISSN 1319-8025

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Official URL: http://dx.doi.org/10.1007/s13369-015-1712-z

Abstract

Bacterial cellulose demonstrates unique properties including high mechanical strength, crystallinity and water retention ability that are suitable for industrial applications, such as food, paper manufacturing and pharmaceutical. In this study, Acetobacter xylinum 0416 was cultured in a designed 10-L Rotary Discs Reactor (RDR) to produce bacterial cellulose. The effects of different pH in the range of 3.5–7.5 on the bacterial cellulose production and the bacterial growth were investigated. The highest yield was obtained at pH 5.0 with a total dried weight of 28.3 g, while the lowest yield was obtained at pH 3.5 with a total dried weight of 4.7 g. Results also showed that the dried weight of bacterial cellulose was 60% higher when the pH of the medium was controlled during the experiments compared with uncontrolled pH. In addition, A. xylinum 0416 growth decreased to around 30% when pH value dropped from 5.05 to 3.56. The results also proved that the formation of acetic acid as a by-product caused the pH to drop during fermentation process in 10-L RDR.

Item Type:Article
Uncontrolled Keywords:acetobacter xylinum 0416, bacterial cellulose, pH
Subjects:Q Science > Q Science (General)
T Technology > TP Chemical technology
Divisions:Biosciences and Medical Engineering
ID Code:58596
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 04:08
Last Modified:16 Dec 2021 06:00

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