Journal
BIORESOURCE TECHNOLOGY
Volume 307, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123248
Keywords
Decolorization; Carbon source; Recolorization inhibition; Metabolomics
Funding
- Fundamental Research Funds for the Central Universities [2232018G-11, 2232019D3-22]
- National Key Research and Development Program of China [2016YFC0400501]
- Graduate Student Innovation Fund of Donghua University [CUSF-DH-D-2019078]
- Anhui Provincial Natural Science Foundation [1808085QE176]
- Scientific Research Program of Anhui Provincial Education Department [KJ2018A0444]
- Suzhou University [2016jb04]
- Chenguang Program - Shanghai Education Development Foundation
- Shanghai Municipal Education Commission [16CG40]
- Shanghai Leading Academic Discipline Project [B604]
Ask authors/readers for more resources
In this study, the biological decolorization of reactive black 5 (RB5) by Klebsiella sp. KL-1 in yeast extract (YE) medium was captured the recolorization after exposure to O-2, which induced a 15.82% reduction in decolorization efficiency. Similar result was also observed in YE + lactose medium, but not in YE + glucose/xylose media (groups YE + Glu/Xyl). Through biodegradation studies, several degradation intermediates without quinoid structure were produced in groups YE + Glu/Xyl and differential degradation pathways were deduced in diverse groups. Metabolomics analysis revealed significant variations in up-/down-regulated metabolites using RB5 and different carbon sources. Moreover, the underlying mechanism of recolorization inhibition was proposed. Elevated reducing power associated with variable metabolites (2-hydroxyhexadecanoic acid, 9(R)-HODE cholesteryl ester, linoleamide, oleamide) rendered additional reductive cleavage of C-N bond on naphthalene ring. This study provided a new orientation to inhibit recolorization and deepened the understanding of the molecular mechanism of carbon sources inhibiting recolorization in the removal of refractory dyes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available