Ragi tapai and saccharomyces cerevisiae as potential coculture in viscous fermentation medium for ethanol production
A comparison study on the ethanol production from 20% (w/v) of unhydrolyzed raw cassava starch using Saccharomyces cerevisiae and Candida tropicalis was performed and compared with the commercialized ragi tapai. The findings showed that S. cerevisiae, C. tropicalis and ragi tapai produced 23, 20 mg/...
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Academic Journals
2010
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| Online Access: | http://irep.iium.edu.my/4241/ http://irep.iium.edu.my/4241/ http://irep.iium.edu.my/4241/1/Azmi_et_al_AJB_Paper_28_Oct_2010.pdf |
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iium-42412012-05-08T07:01:37Z http://irep.iium.edu.my/4241/ Ragi tapai and saccharomyces cerevisiae as potential coculture in viscous fermentation medium for ethanol production Azmi, Azlin Suhaida Ngoh, Gek Cheng Mel, Maizirwan Hasan, Masitah TP155 Chemical engineering TP248.13 Biotechnology TP500 Fermentation industries. Beverages. Alcohol A comparison study on the ethanol production from 20% (w/v) of unhydrolyzed raw cassava starch using Saccharomyces cerevisiae and Candida tropicalis was performed and compared with the commercialized ragi tapai. The findings showed that S. cerevisiae, C. tropicalis and ragi tapai produced 23, 20 mg/l and 26 g/l of ethanol in 72 h, respectively. Subsequent coculturing of the two best performing strains namely ragi tapai and S. cerevisiae were performed to improve ethanol production and to reduce the accumulation of inhibitory concentration of reducing sugar with 10% (w/v) unhydrolyzed raw cassava starch. The coculture of ragi tapai with S. cerevisiae using the unhydrolyzed raw starch in a single step-fermentation produced an ethanol concentration of 35 g/l when the starch was inoculated with ragi tapai and cocultured with S. cerevisiae. The yield was 46% higher than the one inoculated with ragi tapai only (24 g/l). The glucose concentration was maintained at a low concentration in the coculture medium as compared to the medium with pure ragi tapai. The findings suggested that coculture of ragi tapai with S. cerevisiae is capable of enhancing the ethanol production and prevention of the inhibitory effect of reducing sugars on amylolytic activity. Academic Journals 2010-10-18 Article PeerReviewed application/pdf en http://irep.iium.edu.my/4241/1/Azmi_et_al_AJB_Paper_28_Oct_2010.pdf Azmi, Azlin Suhaida and Ngoh, Gek Cheng and Mel, Maizirwan and Hasan, Masitah (2010) Ragi tapai and saccharomyces cerevisiae as potential coculture in viscous fermentation medium for ethanol production. African Journal of Biotechnology, 9 (42). pp. 7122-7127. ISSN 1684–5315 http://www.academicjournals.org/AJB |
| repository_type |
Digital Repository |
| institution_category |
Local University |
| institution |
International Islamic University Malaysia |
| building |
IIUM Repository |
| collection |
Online Access |
| language |
English |
| topic |
TP155 Chemical engineering TP248.13 Biotechnology TP500 Fermentation industries. Beverages. Alcohol |
| spellingShingle |
TP155 Chemical engineering TP248.13 Biotechnology TP500 Fermentation industries. Beverages. Alcohol Azmi, Azlin Suhaida Ngoh, Gek Cheng Mel, Maizirwan Hasan, Masitah Ragi tapai and saccharomyces cerevisiae as potential coculture in viscous fermentation medium for ethanol production |
| description |
A comparison study on the ethanol production from 20% (w/v) of unhydrolyzed raw cassava starch using Saccharomyces cerevisiae and Candida tropicalis was performed and compared with the commercialized ragi tapai. The findings showed that S. cerevisiae, C. tropicalis and ragi tapai produced 23, 20 mg/l and 26 g/l of ethanol in 72 h, respectively. Subsequent coculturing of the two best
performing strains namely ragi tapai and S. cerevisiae were performed to improve ethanol production and to reduce the accumulation of inhibitory concentration of reducing sugar with 10% (w/v) unhydrolyzed raw cassava starch. The coculture of ragi tapai with S. cerevisiae using the unhydrolyzed raw starch in a single step-fermentation produced an ethanol concentration of 35 g/l when the starch
was inoculated with ragi tapai and cocultured with S. cerevisiae. The yield was 46% higher than the one
inoculated with ragi tapai only (24 g/l). The glucose concentration was maintained at a low concentration in the coculture medium as compared to the medium with pure ragi tapai. The findings suggested that coculture of ragi tapai with S. cerevisiae is capable of enhancing the ethanol production and prevention of the inhibitory effect of reducing sugars on amylolytic activity. |
| format |
Article |
| author |
Azmi, Azlin Suhaida Ngoh, Gek Cheng Mel, Maizirwan Hasan, Masitah |
| author_facet |
Azmi, Azlin Suhaida Ngoh, Gek Cheng Mel, Maizirwan Hasan, Masitah |
| author_sort |
Azmi, Azlin Suhaida |
| title |
Ragi tapai and saccharomyces cerevisiae as potential
coculture in viscous fermentation medium for ethanol
production |
| title_short |
Ragi tapai and saccharomyces cerevisiae as potential
coculture in viscous fermentation medium for ethanol
production |
| title_full |
Ragi tapai and saccharomyces cerevisiae as potential
coculture in viscous fermentation medium for ethanol
production |
| title_fullStr |
Ragi tapai and saccharomyces cerevisiae as potential
coculture in viscous fermentation medium for ethanol
production |
| title_full_unstemmed |
Ragi tapai and saccharomyces cerevisiae as potential
coculture in viscous fermentation medium for ethanol
production |
| title_sort |
ragi tapai and saccharomyces cerevisiae as potential
coculture in viscous fermentation medium for ethanol
production |
| publisher |
Academic Journals |
| publishDate |
2010 |
| url |
http://irep.iium.edu.my/4241/ http://irep.iium.edu.my/4241/ http://irep.iium.edu.my/4241/1/Azmi_et_al_AJB_Paper_28_Oct_2010.pdf |
| first_indexed |
2023-09-18T20:12:23Z |
| last_indexed |
2023-09-18T20:12:23Z |
| _version_ |
1777407564050333696 |