Biomass-derived carbon quantum dots from C hlorella vulgaris: Photocatalytic reduction of malachite green dye coupled with anti-quorum sensing and antimicrobial activity against food pathogens

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dc.authoridALI, NEMAT/0000-0001-6525-4202
dc.authoridchawla, Prince/0000-0002-2383-7925
dc.contributor.authorThakur, Sweezee
dc.contributor.authorBains, Aarti
dc.contributor.authorKumar, Anil
dc.contributor.authorGoksen, Gulden
dc.contributor.authorDhull, Sanju Bala
dc.contributor.authorAli, Nemat
dc.contributor.authorKhan, Mohammad Rashid
dc.date.accessioned2025-03-17T12:27:16Z
dc.date.available2025-03-17T12:27:16Z
dc.date.issued2024
dc.departmentTarsus Üniversitesi
dc.description.abstractAlgae, particularly Chlorella vulgaris, , present a novel, sustainable source for producing carbon quantum dots (CQDs) with unique properties. This study introduces an eco-friendly synthesis method using a hydrothermal process at 200 degrees C for 12 h, yielding stable, spherical CQDs with an average diameter of 7.19 +/- 0.06 nm, composed primarily of carbon and oxygen. The innovation consists on employing microalgal biomass for the production of CQDs, hence obviating the necessity for additional chemicals or passivating agents. The CQDs exhibit a fluorescence peak at 416 nm upon excitation at 241 nm, with UV-visible spectra showing pi ->pi* and n ->pi* transition at 241 nm and 356 nm, respectively. High-resolution TEM analysis reveals a crystalline structure with a 0.21 nm interlayer spacing, confirmed by lattice fringes, and a quantum yield of 41.24%, indicating efficient photoluminescence. The CQDs demonstrate strong antimicrobial activity against pathogens like Staphylococcus aureus and Pseudomonas aeruginosa, , with significant inhibition of quorum sensing like twitching and swarming and bacterial motilities. Furthermore, the CQDs achieve a 91.47% degradation of malachite green dye, underscoring their potential in environmental remediation. This study highlights the dual applications of Chlorella vulgaris-derived CQDs in health and environmental contexts, presenting a sustainable and innovative approach for nanomaterial synthesis.
dc.description.sponsorshipDepartment of Central Instrumentation facility, Lovely Professional University; King Saud University, Riyadh, Saudi Arabia [RSPD2024R940]
dc.description.sponsorshipSupport by the Department of Central Instrumentation facility, Lovely Professional University is gratefully acknowledged and The authors extend their appreciation to the Researchers Supporting Project Number (RSPD2024R940) , King Saud University, Riyadh, Saudi Arabia, for supporting this study.
dc.identifier.doi10.1016/j.fbio.2024.105272
dc.identifier.issn2212-4292
dc.identifier.issn2212-4306
dc.identifier.scopus2-s2.0-85206647385
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.fbio.2024.105272
dc.identifier.urihttps://hdl.handle.net/20.500.13099/2169
dc.identifier.volume62
dc.identifier.wosWOS:001339323300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofFood Bioscience
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectDye reduction
dc.subjectBiomass
dc.subjectPhotoluminescence
dc.subjectAlgae
dc.subjectSpectroscopy
dc.subjectAntimicrobial
dc.subjectSensors
dc.titleBiomass-derived carbon quantum dots from C hlorella vulgaris: Photocatalytic reduction of malachite green dye coupled with anti-quorum sensing and antimicrobial activity against food pathogens
dc.typeArticle

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