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New Generation of Antibacterial Products Based on Colloidal Silver.
Materials (Basel). 2020 Mar 29; 13(7)M

Abstract

The main objective of the present paper is the green synthesis of colloidal silver by ultrasonication starting from silver nitrate and using soluble starch as the reducing agent. Soluble starch has been used during synthesis because it is a cheap and environmentally friendly reactive. Silver colloid has been characterized by physicochemical methods: UV-VIS spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-Ray spectroscopy. This colloidal material was prepared in order to prove and establish its toxicity on heterotrophic bacteria. Toxicity tests were carried out using test cultures with and without silver colloid with different concentrations. This way was possible to establish the minimum silver concentration that presents a toxic effect against used bacteria. Quantitative evaluation of bacterial growth was performed by using the Most Probable Number method. By counting the bacterial colony number, the antibacterial effect was determined for colloidal silver deposited onto the cotton gauze by adsorption. During the present study, we optimized the adsorption specific parameters: solid:liquid ratio, temperature, contact time, colloidal silver concentration. By thermodynamic, equilibrium and kinetic studies, the adsorptive process mechanism was established.

Authors+Show Affiliations

Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 2 Piata Victoriei, RO 300006 Timisoara, Romania.Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 2 Piata Victoriei, RO 300006 Timisoara, Romania.Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 2 Piata Victoriei, RO 300006 Timisoara, Romania.Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 2 Piata Victoriei, RO 300006 Timisoara, Romania.Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 2 Piata Victoriei, RO 300006 Timisoara, Romania.Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 2 Piata Victoriei, RO 300006 Timisoara, Romania.Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 2 Piata Victoriei, RO 300006 Timisoara, Romania.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32235381

Citation

Pascu, Bogdan, et al. "New Generation of Antibacterial Products Based On Colloidal Silver." Materials (Basel, Switzerland), vol. 13, no. 7, 2020.
Pascu B, Negrea A, Ciopec M, et al. New Generation of Antibacterial Products Based on Colloidal Silver. Materials (Basel). 2020;13(7).
Pascu, B., Negrea, A., Ciopec, M., Davidescu, C. M., Negrea, P., Gherman, V., & Duteanu, N. (2020). New Generation of Antibacterial Products Based on Colloidal Silver. Materials (Basel, Switzerland), 13(7). https://doi.org/10.3390/ma13071578
Pascu B, et al. New Generation of Antibacterial Products Based On Colloidal Silver. Materials (Basel). 2020 Mar 29;13(7) PubMed PMID: 32235381.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - New Generation of Antibacterial Products Based on Colloidal Silver. AU - Pascu,Bogdan, AU - Negrea,Adina, AU - Ciopec,Mihaela, AU - Davidescu,Corneliu Mircea, AU - Negrea,Petru, AU - Gherman,Vasile, AU - Duteanu,Narcis, Y1 - 2020/03/29/ PY - 2020/02/15/received PY - 2020/03/13/revised PY - 2020/03/25/accepted PY - 2020/4/3/entrez PY - 2020/4/3/pubmed PY - 2020/4/3/medline KW - adsorption KW - antibacterial effect KW - band aid KW - colloidal silver KW - soluble starch KW - ultrasonic JF - Materials (Basel, Switzerland) JO - Materials (Basel) VL - 13 IS - 7 N2 - The main objective of the present paper is the green synthesis of colloidal silver by ultrasonication starting from silver nitrate and using soluble starch as the reducing agent. Soluble starch has been used during synthesis because it is a cheap and environmentally friendly reactive. Silver colloid has been characterized by physicochemical methods: UV-VIS spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-Ray spectroscopy. This colloidal material was prepared in order to prove and establish its toxicity on heterotrophic bacteria. Toxicity tests were carried out using test cultures with and without silver colloid with different concentrations. This way was possible to establish the minimum silver concentration that presents a toxic effect against used bacteria. Quantitative evaluation of bacterial growth was performed by using the Most Probable Number method. By counting the bacterial colony number, the antibacterial effect was determined for colloidal silver deposited onto the cotton gauze by adsorption. During the present study, we optimized the adsorption specific parameters: solid:liquid ratio, temperature, contact time, colloidal silver concentration. By thermodynamic, equilibrium and kinetic studies, the adsorptive process mechanism was established. SN - 1996-1944 UR - https://www.unboundmedicine.com/medline/citation/32235381/New_Generation_of_Antibacterial_Products_Based_on_Colloidal_Silver L2 - https://www.mdpi.com/resolver?pii=ma13071578 DB - PRIME DP - Unbound Medicine ER -
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