Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion
The effect of temperature (30°C, 37°C, uncontrolled) and initial pH adjustment at pH 7 in the anaerobic digestion process was investigated to enhance the production of organic acids from restaurant waste. The highest organic acid level obtained was 39.6 g/L on the fifth day of fermentation conducted...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Inderscience Enterprises
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/28085/ http://psasir.upm.edu.my/id/eprint/28085/1/Polyhydroxybutyrate.pdf |
| _version_ | 1848846018454487040 |
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| author | Eshtaya, Majd Khalid Abdul Rahman, Nor'aini Hassan, Mohd Ali |
| author_facet | Eshtaya, Majd Khalid Abdul Rahman, Nor'aini Hassan, Mohd Ali |
| author_sort | Eshtaya, Majd Khalid |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The effect of temperature (30°C, 37°C, uncontrolled) and initial pH adjustment at pH 7 in the anaerobic digestion process was investigated to enhance the production of organic acids from restaurant waste. The highest organic acid level obtained was 39.6 g/L on the fifth day of fermentation conducted at 30°C and initial pH 7. The acids produced corresponded to 39.4% of the yield based on the initial concentration of substrate. The main organic acids produced were lactic and acetic acids. Using organic acids from fermented restaurant waste, recombinant Escherichia coli pnDTM2 gave PHB concentration, PHB content and PHB productivity of 9.2 g/L, 44% w/w and 0.54 g/L/h, respectively, in a pH stat fed-batch culture. |
| first_indexed | 2025-11-15T08:56:02Z |
| format | Article |
| id | upm-28085 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:56:02Z |
| publishDate | 2013 |
| publisher | Inderscience Enterprises |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-280852016-06-20T05:55:52Z http://psasir.upm.edu.my/id/eprint/28085/ Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion Eshtaya, Majd Khalid Abdul Rahman, Nor'aini Hassan, Mohd Ali The effect of temperature (30°C, 37°C, uncontrolled) and initial pH adjustment at pH 7 in the anaerobic digestion process was investigated to enhance the production of organic acids from restaurant waste. The highest organic acid level obtained was 39.6 g/L on the fifth day of fermentation conducted at 30°C and initial pH 7. The acids produced corresponded to 39.4% of the yield based on the initial concentration of substrate. The main organic acids produced were lactic and acetic acids. Using organic acids from fermented restaurant waste, recombinant Escherichia coli pnDTM2 gave PHB concentration, PHB content and PHB productivity of 9.2 g/L, 44% w/w and 0.54 g/L/h, respectively, in a pH stat fed-batch culture. Inderscience Enterprises 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/28085/1/Polyhydroxybutyrate.pdf Eshtaya, Majd Khalid and Abdul Rahman, Nor'aini and Hassan, Mohd Ali (2013) Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion. International Journal of Environment and Waste Management, 11 (1). pp. 27-37. ISSN 1478-9876; ESSN: 1478-9868 http://www.inderscienceonline.com/doi/abs/10.1504/IJEWM.2013.050521 10.1504/IJEWM.2013.050521 |
| spellingShingle | Eshtaya, Majd Khalid Abdul Rahman, Nor'aini Hassan, Mohd Ali Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion |
| title | Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion |
| title_full | Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion |
| title_fullStr | Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion |
| title_full_unstemmed | Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion |
| title_short | Bioconversion of restaurant waste into polyhydroxybutyrate (PHB) by recombinant E. coli through anaerobic digestion |
| title_sort | bioconversion of restaurant waste into polyhydroxybutyrate (phb) by recombinant e. coli through anaerobic digestion |
| url | http://psasir.upm.edu.my/id/eprint/28085/ http://psasir.upm.edu.my/id/eprint/28085/ http://psasir.upm.edu.my/id/eprint/28085/ http://psasir.upm.edu.my/id/eprint/28085/1/Polyhydroxybutyrate.pdf |