Glycerol as an additional carbon source for bacterial cellulose synthesis

2nd International Conference on Biomass: Toward Sustainable Biomass Utilization for Industrial and Energy Applications

生物科学;工业技术;能源学

Agustin, Y.E.^1 ; Padmawijaya, K.S.^1 ; Rixwari, H.F.^1 ; Yuniharto, V.A.S.^1

Chemical Engineering Department, University of Surabaya, Surabaya, Indonesia^1

关键词: Acetobacter xylinus;    Bacterial cellulose;    Carbon source;    Elongation values;    Fermentation medium;    Fourier transform infra red (FTIR) spectroscopy;    Optimum conditions;    Strength and elongations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/141/1/012001/pdf
DOI  :  10.1088/1755-1315/141/1/012001

来源: IOP

【 摘 要 】

Bacterial cellulose, the fermentation result of Acetobacter xylinus can be produced when glycerol was used as an additional carbon source. In this research, bacterial cellulose produced in two different fermentation medium, Hestrin and Scharmm (HS) medium and HS medium with additional MgSO4. Concentration of glycerol that used in this research were 0%; 5%; 10%; and 15% (v/v). The optimum conditions of bacterial cellulose production on each experiment variations determined by characterization of the mechanical properties, including thickness, tensile strength and elongation. Fourier Transform Infra Red Spectroscopy (FTIR) revealed the characterization of bacterial cellulose. Results showed that the growth rate of bacterial cellulose in HS-MgSO4-glycerol medium was faster than in HS-glycerol medium. Increasing concentrations of glycerol will lower the value of tensile strength and elongation. Elongation test showed that the elongation bacterial cellulose (BC) with the addition of 4.95% (v/v) glycerol in the HS-MgSO4medium is the highest elongation value. The optimum bacterial cellulose production was achieved when 4.95% (v/v) of glycerol added into HS-MgSO4medium with stress at break of 116.885 MPa and 4.214% elongation.