Use of electrosprayed Sophora flavescens natural-product nanoparticles for antimicrobial air filtration

Title
Use of electrosprayed Sophora flavescens natural-product nanoparticles for antimicrobial air filtration
Authors
정재희이정은배귀남
Keywords
electrospray; nanoparticles; natural product; antimicrobial filter; sophora flavescens; Plant extract
Issue Date
2013-03
Publisher
Journal of aerosol science
Citation
VOL 57, 185-193
Abstract
Previously, we demonstrated that electrospraying, driven by high-intensity electric fields, can be used to generate stable antimicrobial nanoparticles continuously from ethanolic extracts of natural plant products. In this study, we evaluated the performance of antimicrobial air filters made by these electrosprayed natural-product nanoparticles. As a natural antimicrobial suspension, an ethanolic extract of Sophora flavescens Ait. was sprayed in steady cone-jet mode using our specially designed electrospray system (Jung et al., 2011b). Natural-product nanoparticles with a bimodal size distribution were electrosprayed and deposited continuously onto the surfaces of air filters at various concentrations. The physical (filtration efficiency, pressure drop, and fiber morphology) and biological (antimicrobial efficacy against airborne Staphylococcus epidermidis) characteristics were evaluated. Consequently, although the filter pressure drop increased with the amount of nanoparticles on the filter, the antimicrobial activity was enhanced. Compared with the conventional nebulization process, the filters generated by electrospraying S. flavescens natural-product nanoparticles resulted in more effective removal of S. epidermidis bioaerosols. These results will facilitate the implementation of this new technology to control air quality and protect against hazardous airborne microorganisms.
URI
http://pubs.kist.re.kr/handle/201004/44523
ISSN
00218502
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE