Monitoring of pH and temperature effects in fermentation process of itaconic acid
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The Institution of Engineers, Malaysia
2011
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my.unimap-135472011-08-12T06:06:25Z Monitoring of pH and temperature effects in fermentation process of itaconic acid Siti Rozaimah, Sheikh Abdullah, Dr. Jamaliah, Md. Jahim Norliza, Abd. Rahman Norhayati, Ismail Idayu, S. M. Saleha, Atan Aspergillus terreus Itaconic acid Temperature control pH Control Link to publisher's homepage at http://www.myiem.org.my/ The environmental conditions such as temperature and pH have great impact on microbial growth kinetics and product formation during fermentation process. Temperature can be related to activation energy that affects the growth rates and death parameters while pH influences the activity of the enzyme and consequently affects the microbial growth rate and product formation. In this study, four different conditions were used to investigate the effects of temperature and pH on the formation of itaconic acid. The experiments were conducted using local strain Aspergillus terreus IMI 282743 in a 2.5 L laboratory fermenter (KF2.5L KoBiotech, Korean) for production of itaconic acid. The temperature and pH were changed for various fermentation conditions such as: (1) the temperature was controlled in the range of 30.0 +0.1oC and the pH was controlled in the range of 3.1-3.2, (2) the temperature was controlled in the range of 30.0 +0.1oC and the pH was increased to 7.0 before it was allowed to decrease in a natural way, (3) the temperature was allowed to change naturally but the pH was controlled in the range of 3.48-3.50, and finally, (4) both temperature and pH were allowed to change naturally throughout the fermentation cycle. From the four conditions above, the maximum itaconic acid production of 1.0 mg/mL was observed in the second state, in which the temperature was controlled in the range of 30.0 +0.1oC and the pH was initially increased to 7.0 before it was allowed to decrease naturally during the fermentation process. 2011-08-12T06:06:25Z 2011-08-12T06:06:25Z 2005-12 Article The Journal of the Institution of Engineers, Malaysia, vol. 66(4), 2005, pages 47-50 0126-513X http://www.myiem.org.my/content/iem_journal_2005-176.aspx http://hdl.handle.net/123456789/13547 en The Institution of Engineers, Malaysia |
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English |
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Aspergillus terreus Itaconic acid Temperature control pH Control |
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Aspergillus terreus Itaconic acid Temperature control pH Control Siti Rozaimah, Sheikh Abdullah, Dr. Jamaliah, Md. Jahim Norliza, Abd. Rahman Norhayati, Ismail Idayu, S. M. Saleha, Atan Monitoring of pH and temperature effects in fermentation process of itaconic acid |
| description |
Link to publisher's homepage at http://www.myiem.org.my/ |
| format |
Article |
| author |
Siti Rozaimah, Sheikh Abdullah, Dr. Jamaliah, Md. Jahim Norliza, Abd. Rahman Norhayati, Ismail Idayu, S. M. Saleha, Atan |
| author_facet |
Siti Rozaimah, Sheikh Abdullah, Dr. Jamaliah, Md. Jahim Norliza, Abd. Rahman Norhayati, Ismail Idayu, S. M. Saleha, Atan |
| author_sort |
Siti Rozaimah, Sheikh Abdullah, Dr. |
| title |
Monitoring of pH and temperature effects in fermentation process of itaconic acid |
| title_short |
Monitoring of pH and temperature effects in fermentation process of itaconic acid |
| title_full |
Monitoring of pH and temperature effects in fermentation process of itaconic acid |
| title_fullStr |
Monitoring of pH and temperature effects in fermentation process of itaconic acid |
| title_full_unstemmed |
Monitoring of pH and temperature effects in fermentation process of itaconic acid |
| title_sort |
monitoring of ph and temperature effects in fermentation process of itaconic acid |
| publisher |
The Institution of Engineers, Malaysia |
| publishDate |
2011 |
| url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/13547 |
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1643790888991719424 |
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13.214268 |