Morphology and antifungal effect of nano-ZnO and nano-Pd-doped nano-ZnO against Aspergillus and Candida

Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Mohammed A GondalMohammad N Siddiqui

Abstract

The present work was aimed to study the activity of nano-particulated ZnO and nano Pd doped nano-ZnO against Aspergillus and Candida species, commonly contaminating the water supply systems. Micro-ZnO was purchased from the market (Aldrich, USA) while nano ZnO were synthesized using sole gel and precipitation methods and their morphology was determined using XRD and TEM techniques. The average grain size of nano-ZnO estimated by these techniques was 30 nm and 20 nm, respectively. The doping of nano-ZnO with 5 % Pd was achieved by a thermal decomposition method and its morphology; as characterized by XRD, TEM and FESEM techniques; gave an average grain size of 35 nm. Serial dilutions of nano-ZnO doped with 5 % Pd, pure nano-ZnO and micro-ZnO (as a control) were prepared from 10 mg/mL stock solution of each in dermasel agar (OXOID), inoculated with standard strains of Candida albicans and Aspergillus niger and incubated at 37°C for 24 and 48 hours, respectively. Their antimicrobial effect was compared by the minimal inhibitory concentration (MIC), determined as the dilution giving a negligible growth of microorganism. Nano-ZnO doped with 5 % nano-Pd, pure nano-ZnO and micro-ZnO, showed antifungal activity against Aspergilus niger...Continue Reading

References

Oct 3, 2006·Water Research·Laura K AdamsPedro J J Alvarez
Mar 8, 2008·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Mohammed A Gondal, Amjad Khalil
Feb 3, 2009·Environmental Pollution·Wei JiangBaoshan Xing
Mar 26, 2009·Clinical Cancer Research : an Official Journal of the American Association for Cancer Research·Emad A RakhaIan O Ellis
Sep 1, 2008·Science and Technology of Advanced Materials·Nagarajan Padmavathy, Rajagopalan Vijayaraghavan

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Citations

Jan 26, 2017·PloS One·Ariana AuyeungHoracio Bach
Aug 13, 2013·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Christian O DimkpaAnne J Anderson
Oct 21, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Diana VisinescuOana Carp

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