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The effects of reducing power from metal carbonates on succinic acid production using actinobacillus succinogenes
Jian, Ping Tan1, Jamaliah Md Jahim2, Ta, Yeong Wu3, Shuhaida Harun4, Tabassum Mumtaz5.
Bio-succinic acid was first commercialized in 2012 and has a potential to hit $
15 billion market. Higher conversion or yield in this case, allow bio-succinic
acid to be more competitive and could potentially take over the market of
other intermediate compound. Redox state of the fermentation medium is
reported to have an effect on the metabolic flux and in Actinobacillus
succinogenes, one of the best succinic acid producers. It has a direct impact
on succinate yield. Therefore, carbonates with different reducing power,
CaCO3, NaHCO3, MgCO3, ZnCO3 and (NH4)2CO3 were employed to
investigate the effect of their reducing power on succinate yield from
glucose. Results showed that a more reducing carbonate, CaCO3 promoted
the metabolic flux of A. succinogenes to produce higher reductive
metabolite (succinate) to regain its intracellular redox balance. Calcium has
a reducing power of 2.87 relative to hydrogen. Ammonium carbonate has an
oxidizing power of 0.27, or a negative reducing power relative to hydrogen.
Therefore, CaCO3 with a stronger reducing power had a higher succinate
yield of 0.68 g/g than (NH4)2CO3 with only 0.14 g/g. On the other hand, MgCO3
had the highest final succinate concentration due to the overall higher sugar
consumption by A. succinogenes.
Affiliation:
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
- Universiti Kebangsaan Malaysia, Malaysia
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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6 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (1.4) |
Rank |
Q3 (Engineering (all)) |
Additional Information |
SJR (0.191) |
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