Ethanol fermentation using isolated candida tropicalis ATTCCa under non-conventional temperatures
Candida tropicalis isolated from rotten pineapple in Malaysia was used to perfonn ethanol fennentation in hydrolyzed sago starch. The effect of the temperature on the growth of the yeast was studied at 42 and 45°C using batch fennentation mode. From the study, this strain can considered as thenno...
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| Format: | Final Year Project Report |
| Language: | English English |
| Published: |
Universiti Malaysia Sarawak, (UNIMAS)
2012
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/8149/1/Ethanol%20Fermentation%20Using%20Isolated%20Candida%20tropicalis%20ATTCCa%20under%20non-conventional%20temperatures%20%2824pgs%29.pdf http://ir.unimas.my/id/eprint/8149/8/Lim%20Ming%20ft.pdf http://ir.unimas.my/id/eprint/8149/ |
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| Summary: | Candida tropicalis isolated from rotten pineapple in Malaysia was used to perfonn ethanol
fennentation in hydrolyzed sago starch. The effect of the temperature on the growth of the
yeast was studied at 42 and 45°C using batch fennentation mode. From the study, this strain
can considered as thenno tolerant yeast due to ability to growth well at 42°C and even to
survive at 45°C growing at lower rate. Repeated batch fennentation RBF mode using
hydrolyzed sago starch was perfonned to improve the productivity of ethanol at different
concentration of 30glL, 40glL, 50 giL, 60glL, 90glL and 100glL for 10 fennentation cycles.
In addition, the kinetics of ethanol production, glucose consumption, and by-products of the
fennentation was analyzed during the RBF. The rate of glucose consumption of this strain
during RBF at 42°C was low. This phenomenon was avoided by lowering the temperature
from 42°C to 36°C and consequently high concentration of ethanol was achieved. |
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