Hormetic effect of ionic liquid 1-ethyl-3-methylimidazolium acetate on bacteria
- Bhabha Atomic Research Center, Kalpakkam (India). Biofouling and Biofilm Processes Sect.
- Brookhaven National Laboratory (BNL), Upton, NY (United States). Environmental Sciences Dept.; POSTECH, Pohang (Korea, Rep. of). Div. of Advanced Nuclear Engineering
The biological effect of ionic liquids (ILs) is one of the highly debated topics as they are being contemplated for various industrial applications. 1-ethyl-2-methylimidazolium acetate ([EMIM][Ac]) showed remarkable hormesis on anaerobic Clostridium sp. and aerobic Psueudomonas putida. Bacterial growth was stimulated at up to 2.5 g L-1 and inhibited at > 2.5 g L-1 of ([EMIM][Ac]). The growth of Clostridium sp. and P. putida were higher by 0.4 and 4-fold respectively, in the presense of 0.5 g L-1 of ([EMIM][Ac]). Assessment of the effect of [EMIM][Ac] under different growth conditions showed that the hormesis of [EMIM][Ac] was mediated via regulation of medium pH. Hormetic effect of [EMIM][Ac] was evident only in medium with poor buffering capacity and in the presence of a fermentable substrate as the carbon source. The hormetic effect of [EMIM][Ac] on bacterial growth is most likely associated with the buffering capacity of acetate anion. These observations have implications in ILs toxicity studies and ecological risk assessment.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- DE-SC00112704; SC00112704
- OSTI ID:
- 1176995
- Alternate ID(s):
- OSTI ID: 1245325
- Report Number(s):
- BNL-107565-2015-JA; R&D Project: 02155/02158; YN0100000
- Journal Information:
- Chemosphere, Vol. 128; ISSN 0045-6535
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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