| Autor: |
Sarkar, Debapriya, Poddar, Kasturi, Maity, Sourav, Bajirao Patil, Pritam, Sarkar, Angana |
| Předmět: |
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| Zdroj: |
BioEnergy Research; Mar2023, Vol. 16 Issue 1, p191-202, 12p |
| Abstrakt: |
The sustainability of bioethanol production depends on substrate selection. Since direct fermentation allows the interaction between antinutrients and microbes, antinutrient content becomes a crucial factor for substrate selection as these components possess growth inhibitory effects on sensitive microbes. This study demonstrated that the growth of Klebsiella sp. SWET4 had been significantly affected by antinutrients like phytate (3.09% reduction per µg‧mL−1), phenolic acid (0.222% reduction per µg‧mL−1), cyanide (0.376% reduction per µg‧mL−1), and tannin (0.038% reduction per µg‧mL−1). The correlation study of the effect of antinutrients on bacterial growth was further analyzed by principal component analysis (PCA) confirming the least growth inhibitory effect exhibited by banana peel as compared to other selected substrates. Based on the literature survey, genes or gene products that could be affected by selected antinutrient were successfully localized in the genome of SWET4, confirming the severe effect of these antinutrients on bacterial growth. The kinetic study of SWET4 also revealed the fact that ethanol production was growth-associated as derived from the Luedeking-Piret model, both in glucose supplemented and banana peel supplemented culture broths. This also implied that ethanol production was proportional to bacterial growth which can also be maximized in substrates containing the least antinutrients. Hence, for the selection of the best suitable substrates for bioethanol production by direct fermentation technique, the growth inhibitory components should be one of the principal criteria. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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