Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property

Green luminescent water-soluble citric acid-carbon dots composite were synthesized from empty fruit bunches (EFB) biochar. The hydrothermal method solves the weakness of the difficult size to control and the large energy. The hydrothermal method has the advantages of being easy, environmentally frie...

Full description

Saved in:
Bibliographic Details
Main Authors: Pramudita, Rufina, Marpongahtun, Gea, Saharman, Daulay, Amru, Harahap, Mahyuni, Tan, Yong Zen, Goei, Ronn, Tok, Alfred Iing Yoong
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
Subjects:
Online Access:https://hdl.handle.net/10356/164600
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-164600
record_format dspace
spelling sg-ntu-dr.10356-1646002023-06-21T08:20:21Z Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property Pramudita, Rufina Marpongahtun Gea, Saharman Daulay, Amru Harahap, Mahyuni Tan, Yong Zen Goei, Ronn Tok, Alfred Iing Yoong School of Materials Science and Engineering School of Chemistry, Chemical Engineering and Biotechnology Engineering::Bioengineering Engineering::Materials Anti-Bacterial Activity Carbon Dots Green luminescent water-soluble citric acid-carbon dots composite were synthesized from empty fruit bunches (EFB) biochar. The hydrothermal method solves the weakness of the difficult size to control and the large energy. The hydrothermal method has the advantages of being easy, environmentally friendly, not requiring large energy, and the particle size is easy to control. The average size of the composites was 4 nm. The resulting belongs to the n-π* transition of carbonyl groups and C–N bonds. Maximum emission peak was observed at 450 nm excitation wavelength with a gradual decrease in intensity from 350 nm to 310 nm. Purple-blue to the blue region when the excitation wavelength is increased from 300 nm to 350 nm due to the presence of citrazinic acid. The addition of carbon dots with citric acid is effective as an antibacterial. The growth rate of any bacteria co-cultured with citric acid derived carbon dots (CDs-CA) dropped significantly as the concentration of CDs-CA increased, meaning that as the concentration increases, there are more chances for CDs-CA to stick to bacterial cell walls and have an effect on them. It can effectively stop bacteria from growing. The %antimicrobial up to 100% and the minimum inhibitory concentration (MIC) is the lowest antibacterial agent concentration that shows the value for E. coli and S. aureus is 60 μg/mL. Published version 2023-02-06T05:53:44Z 2023-02-06T05:53:44Z 2022 Journal Article Pramudita, R., Marpongahtun, Gea, S., Daulay, A., Harahap, M., Tan, Y. Z., Goei, R. & Tok, A. I. Y. (2022). Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property. Case Studies in Chemical and Environmental Engineering, 6, 100277-. https://dx.doi.org/10.1016/j.cscee.2022.100277 2666-0164 https://hdl.handle.net/10356/164600 10.1016/j.cscee.2022.100277 2-s2.0-85142388646 6 100277 en Case Studies in Chemical and Environmental Engineering © 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Bioengineering
Engineering::Materials
Anti-Bacterial Activity
Carbon Dots
spellingShingle Engineering::Bioengineering
Engineering::Materials
Anti-Bacterial Activity
Carbon Dots
Pramudita, Rufina
Marpongahtun
Gea, Saharman
Daulay, Amru
Harahap, Mahyuni
Tan, Yong Zen
Goei, Ronn
Tok, Alfred Iing Yoong
Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property
description Green luminescent water-soluble citric acid-carbon dots composite were synthesized from empty fruit bunches (EFB) biochar. The hydrothermal method solves the weakness of the difficult size to control and the large energy. The hydrothermal method has the advantages of being easy, environmentally friendly, not requiring large energy, and the particle size is easy to control. The average size of the composites was 4 nm. The resulting belongs to the n-π* transition of carbonyl groups and C–N bonds. Maximum emission peak was observed at 450 nm excitation wavelength with a gradual decrease in intensity from 350 nm to 310 nm. Purple-blue to the blue region when the excitation wavelength is increased from 300 nm to 350 nm due to the presence of citrazinic acid. The addition of carbon dots with citric acid is effective as an antibacterial. The growth rate of any bacteria co-cultured with citric acid derived carbon dots (CDs-CA) dropped significantly as the concentration of CDs-CA increased, meaning that as the concentration increases, there are more chances for CDs-CA to stick to bacterial cell walls and have an effect on them. It can effectively stop bacteria from growing. The %antimicrobial up to 100% and the minimum inhibitory concentration (MIC) is the lowest antibacterial agent concentration that shows the value for E. coli and S. aureus is 60 μg/mL.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Pramudita, Rufina
Marpongahtun
Gea, Saharman
Daulay, Amru
Harahap, Mahyuni
Tan, Yong Zen
Goei, Ronn
Tok, Alfred Iing Yoong
format Article
author Pramudita, Rufina
Marpongahtun
Gea, Saharman
Daulay, Amru
Harahap, Mahyuni
Tan, Yong Zen
Goei, Ronn
Tok, Alfred Iing Yoong
author_sort Pramudita, Rufina
title Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property
title_short Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property
title_full Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property
title_fullStr Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property
title_full_unstemmed Synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property
title_sort synthesis of fluorescent citric acid carbon dots composites derived from empty fruit bunches of palm oil tree and its anti-bacterial property
publishDate 2023
url https://hdl.handle.net/10356/164600
_version_ 1772828966121373696