Rashi Chaudhary1, Nakshatra Bahadur Singh2,
Garima Nagpal3*, Fredrick K Saah3, Amit Kumar Singh4
1Department of Life Science,Sharda University, Greater Noida, India
2Department of Chemistry and Biochemistry,Sharda University, Greater Noida, India, 3Department of Environmental Science, Sharda University, Greater Noida, India, 4Department of Pharmacy Practice, Galgotia University, Greater Noida
Scientific paper
ISSN 0351-9465, E-ISSN 2466-2585
https://doi.org/10.62638/ZasMat1256
Zastita Materijala 66 (1)
56 – 65 (2025)
Nanomaterials in bacterial detection: current trends and future outlook
Abstract
Contamination by pathogenic bacteria represents a severe risk to public health and well-being. We outlined current approaches to detecting and sensing harmful bacteria by integrating recognition elements with nanomaterials (NMs) in this study. Nanomaterials have emerged as a transformative technology for bacterial detection due to their unique physicochemical properties, including high surface area, quantum effects, and enhanced reactivity. This review highlights the current trends in the application of various nanomaterials, such as gold nanoparticles, carbon nanotubes, and quantum dots, in the detection of bacterial pathogens. These materials enable the development of selective, and rapid detection methods through mechanisms like surface plasmon resonance, electrochemical sensing, and fluorescence. Furthermore, integrating nanomaterials with microfluidic devices and biosensors is discussed, showcasing advancements in point-of-care diagnostics. Challenges such as stability, reproducibility, and potential toxicity of nanomaterials are addressed, alongside regulatory considerations. The future outlook emphasizes the potential of emerging nanomaterials, such as graphene and metal-organic frameworks, to revolutionize bacterial detection. This review aims to enhance the scalability, cost-effectiveness, and environmental sustainability of these technologies, paving the way for widespread clinical and environmental applications.
Keywords: Contamination, nanomaterial, nanoprobes, pathogenic bacteria, sensing
Nanomaterijali u detekciji bakterija: trenutni trendovi i budući izgledi
Izvodi
Kontaminacija patogenim bakterijama predstavlja ozbiljan rizik po javno zdravlje i dobrobit. U ovoj studiji izneli smo trenutne pristupe otkrivanju štetnih bakterija integracijom elemenata za prepoznavanje sa nanomaterijalima (NM). Nanomaterijali su se pojavili kao transformativna tehnologija za detekciju bakterija zbog svojih jedinstvenih fizičko-hemijskih svojstava, uključujući veliku površinu, kvantne efekte i poboljšanu reaktivnost. Ovaj pregled naglašava trenutne trendove u primeni različitih nanomaterijala, kao što su nanočestice zlata, ugljenične nanocevi i kvantne tačke, u detekciji bakterijskih patogena. Ovi materijali omogućavaju razvoj selektivnih i brzih metoda detekcije kroz mehanizme kao što su površinska plazmonska rezonanca, elektrohemijski sensing i fluorescencija. Štaviše, raspravlja se o integraciji nanomaterijala sa mikrofluidnim uređajima i biosenzorima, pokazujući napredak u dijagnostici na licu mesta. Izazovi kao što su stabilnost, ponovljivost i potencijalna toksičnost nanomaterijala su adresirani, zajedno sa regulatornim razmatranjima. Izgledi za budućnost naglašavaju potencijal nanomaterijala u nastajanju, kao što su grafen i metal-organski okviri, da revolucionišu otkrivanje bakterija. Ovaj pregled ima za cilj da poboljša skalabilnost, isplativost i ekološku održivost ovih tehnologija, utirući put širokoj kliničkoj i ekološkoj primeni.
Ključne reči: Kontaminacija, nanomaterijal, nanosonde, patogene bakterije, sensing
Sribharathy Vijayagopal 1,Viswadhara Nagarajan1,
Jeyaprabha Chellappa2*
1Department of chemistry, Anna Adarsh College for Women, Anna Nagar, Chennai , India, 2Department of Science and Humanities – Chemistry, Anna University – University College of Engineering Dindigul, Dindigul , India
Scientific paper
ISSN 0351-9465, E-ISSN 2466-2585
https://doi.org/10.62638/ZasMat1189
Zastita Materijala 66 (1)
56 – 65 (2025)
Bio-inspired synthesis of sulphur nanoparticles and its application
Abstract
We employed an economical, swift, and environmentally friendly approach to synthesize sulphur nanoparticles, utilizing an extract from Ficus religiosa leaves. Comprehensive characterization of these nanoparticles was performed through UV-Visible Spectroscopy, FTIR, XRD, and FESEM techniques. The X-Ray diffraction method unequivocally confirmed the nanometre-scale dimensions of the synthesized sulphur nanoparticles. SEM analysis elucidated their spherical morphology, while XRD data indicated a crystalline size of 23.4 nm for these prepared nanoparticles. Besides, the antibacterial assessment of sulphur nanoparticles produced from Ficus religiosa leaves exhibited superior bioactivity against harmful bacteria species such as Escherichia Coli and Staphylococcus aureus.
Keywords: Sulphur nanoparticles, Ficus religiosa, bioactivity, green synthesis
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Bio-inspirisana sinteza nanočestica sumporai njegova primena
Izvod
Koriscen je ekonomičan, brz i ekološki prihvatljiv pristup za sintezu nanočestica sumpora, koristeći ekstrakt iz listova Ficus religiosa. Sveobuhvatna karakterizacija ovih nanočestica obavljena je UV-vidljivom spektroskopijom, FTIR, XRD i FESEM tehnikama. Metoda difrakcije rendgenskih zraka nedvosmisleno je potvrdila nanometarske dimenzije sintetizovanih nanočestica sumpora. SEM analiza je razjasnila njihovu sfernu morfologiju, dok XRD podaci ukazuju na veličinu kristala od 23,4 nm za ove pripremljene nanočestice. Pored toga, antibakterijska procena nanočestica sumpora proizvedenih iz listova Ficus religiosa pokazala je superiornu bioaktivnost protiv štetnih vrsta bakterija kao što su Escherichia Coli i Staphilococcus aureus.
Ključne reči: nanočestice sumpora, Ficus religiosa, bioaktivnost, zelena sinteza
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