Detailed Information on Publication Record
2020
One-pot synthesis of natural amine-modified biocompatible carbon quantum dots with antibacterial activity
GAGIC, M., S. KOCIOVA, K. SMERKOVA, H. MICHALKOVA, M. SETKA et. al.Basic information
Original name
One-pot synthesis of natural amine-modified biocompatible carbon quantum dots with antibacterial activity
Authors
GAGIC, M., S. KOCIOVA, K. SMERKOVA, H. MICHALKOVA, M. SETKA, P. SVEC, Jan PŘIBYL (203 Czech Republic, guarantor, belonging to the institution), J. MASILKO, R. BALKOVA, Z. HEGER, L. RICHTERA, V. ADAM and V. MILOSAVLJEVIC
Edition
Journal of Colloid and Interface Science, SAN DIEGO, Elsevier, 2020, 0021-9797
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10403 Physical chemistry
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 8.128
RIV identification code
RIV/00216224:14740/20:00118337
Organization unit
Central European Institute of Technology
UT WoS
000581780400004
Keywords in English
Carbon quantum dots; Amines; Thermal decomposition; Toxicity; Antibacterial activity; ROS
Tags
International impact, Reviewed
Změněno: 24/10/2024 13:02, Mgr. Adéla Pešková
Abstract
V originále
In the present study, the thermal decomposition of citric acid in the presence of biogenic amine was used to synthesize four different functionalized carbon quantum dots (CQDs), namely, histamine-(HCQDs), putrescine-(PCQDs), cadaverine-(CCQDs) and spermine-(SCQDs). The thermal decomposition of the precursors resulted in a decrease in stability and the formation of surface amides via a cross-linking process between the carboxyl and amine groups. The deposition of biogenic amines was confirmed by a structural characterization of the synthesized CQDs. The resulting CQDs, with a net zero charge, exhibited excellent stability in environments with different pH values. Through a set of different cytotoxicity tests, the absence of gene mutations, apoptosis, necrosis or disruption in cell membranes revealed the high biocompatibility of the CQDs. The antimicrobial activity of the synthesized CQDs was investigated against different bacterial species (Staphylococcus aureus, Escherichia coli, and Klebsiella pneumonia). We determined the growth kinetics, production of reactive oxygen species (ROS), cell viability and changes in membrane integrity by scanning electron microscopy (SEM). The minimal inhibitory concentrations (MICs) for S. aureus ranged from 3.4 to 6.9 mu g/mL. Regarding E. coli and K. pneumonia, all CQD formulations reduced growth, and the MICs were determined for CCQDs and HCQDs (6.9-19.4 mu g/mL). The antibacterial activity mechanism was attributed to the oxidative stress generated after CQD treatment, which resulted in the destabilization of the bacterial membrane. The bacterial permeability to propidium iodide indicated a change in membrane integrity, and the effect of CQDs on the morphology of the bacterial cells was evidenced by SEM. (C) 2020 Elsevier Inc. All rights reserved.
Links
LM2018127, research and development project |
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LQ1601, research and development project |
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