1Department of Chemical Engineering, Faculty of Engineering,, Indonesia
2Diponegoro University, Semarang. Telp: 7460058,, Indonesia
3Department of Chemical Engineering, Faculty of Engineering and Natural Resouerces,, Malaysia
4 Universiti Teknologi Malaysia 81310 UTM Skudai, Johor, Malaysia
5 Diponegoro University, Semarang., Indonesia
BibTex Citation Data :
@article{METANA1830, author = {Abdullah Abdullah and Hanapi Mat and Widayat Widayat}, title = {KINETIC STUDY OF THE UTILISATION OF DIFFERENT SUBSTRATES TO LACTIC ACID USING Lactobacillus delbrueckii}, journal = {METANA}, volume = {6}, number = {01}, year = {2012}, keywords = {}, abstract = { Abstract Lactic acid fermentation includes several reactions in association with the microorganism growth. A kinetic study was performed of the utilisation of multiple substrates to lactic acid using lactobacillus delbrueckii. Batch fermentation was performed to study effect of different substrates such as glucose, fructose and sucrose . The objective of this research is to study kinetics grow microbial. A anaerobic fermentation were studied in 3 litres stirred fermentor ( Biostat B Model) with working volume of 1 liter, temperature : 40 o C, pH = 6.0, inoculums size : 5% , sugar concentration = 20 g/1. During the first hours of fermentation, glucose and fructose accumulated in the medium and the rate of hydrolysis of sucrose to glucose and fructose was faster than conversion of these substrate. The maximum concentration of glucose and fructose was 5.82 and 5. 14 g/l respectively. The sucrose, glucose, and fructose consumption completely utilized at 56, 68, and 104 hours, respectively. Kinetic parameter for maximum .specific growth rate in glucose, fructose and sucrose is 0.103, 0.0448, and 0.0398 (h -1 ), respectively. The saturation constant is 2.13, 2.67, and 3.32 g/1. Key Words : Kinetic Study, Sugars, Lactic Acid, Maximum Specific Growth Rate and Saturation Constant }, issn = {2549-9130}, doi = {10.14710/metana.v6i01.1830}, url = {https://ejournal.undip.ac.id/index.php/metana/article/view/1830} }
Refworks Citation Data :
Abstract
Lactic acid fermentation includes several reactions in association with the
microorganism growth. A kinetic study was performed of the utilisation of multiple
substrates to lactic acid using lactobacillus delbrueckii. Batch fermentation was
performed to study effect of different substrates such as glucose, fructose and sucrose.
The objective of this research is to study kinetics grow microbial. A anaerobic
fermentation were studied in 3 litres stirred fermentor ( Biostat B Model) with working
volume of 1 liter, temperature : 40 oC, pH = 6.0, inoculums size : 5% , sugar
concentration = 20 g/1. During the first hours of fermentation, glucose and fructose
accumulated in the medium and the rate of hydrolysis of sucrose to glucose and
fructose was faster than conversion of these substrate. The maximum concentration of
glucose and fructose was 5.82 and 5. 14 g/l respectively. The sucrose, glucose, and
fructose consumption completely utilized at 56, 68, and 104 hours, respectively.
Kinetic parameter for maximum .specific growth rate in glucose, fructose and sucrose
is 0.103, 0.0448, and 0.0398 (h-1), respectively. The saturation constant is 2.13, 2.67,
and 3.32 g/1.
Key Words: Kinetic Study, Sugars, Lactic Acid, Maximum Specific Growth Rate and
Saturation Constant
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