Chang Gyu Woo, Hak-Joon Kim, Yong-Jin Kim, Bangwoo Han

  • Environmental & Energy Systems Research Division, Korea Institute of Machinery and Materials, Daejeon 34103, Korea

Received: November 10, 2016
Revised: April 11, 2017
Accepted: May 28, 2017
Download Citation: ||https://doi.org/10.4209/aaqr.2016.10.0466  

  • Download: PDF


Cite this article:
Woo, C.G., Kim, H.J., Kim, Y.J. and Han, B. (2017). Enhanced Antimicrobial Activity on Non-Conducting and Conducting Air Filters by Using Air Ions and Grapefruit Seed Extract. Aerosol Air Qual. Res. 17: 1917-1924. https://doi.org/10.4209/aaqr.2016.10.0466


HIGHLIGHTS

  • Grapefruit seed extract coating and air ion is applied to air filters.
  • The inactivation rate of Staphylococcus aureus on filters was over 80%.
  • The inactivation rate of the activated carbon filter was the highest.

 

ABSTRACT


The application of grapefruit seed extract (GSE) and air ions to filters was investigated with the goal of collecting indoor bioaerosols. GSE exhibits antimicrobial activity because it contains flavonoids such as naringin. Air ions are usually generated by electric ionizers and can inactivate bacteria, viruses, and fungi. In this study, GSE particles were coated onto three different filters: polypropylene (PP), activated carbon fiber (ACF), and metal foam (MF). Ions were supplied to the filter surface using an ionizer. The rate of surface inactivation of Staphylococcus aureus was measured. When only GSE was applied to the filters, the inactivation rate was about 60%; when air ions were applied, the rate was about 70–80%. When both GSE and ions were applied simultaneously, the inactivation rate increased to 80–90%. The physical collection efficiencies of the as-purchased filters were in the following order: PP > ACF > MF. However, when ions were supplied to the filters, the collection efficiencies increased to over 98% for each filter. The inactivation rate of the ACF filter was the highest (92.5%). Therefore, we conclude that the ACF filter is the most efficient of these three filters for inactivating S. aureus.


Keywords: Air filter; Ion; Antimicrobial; Inactivation; Grapefruit seed extract


Share this article with your colleagues 

 

Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

6.5
2021CiteScore
 
 
77st percentile
Powered by
Scopus
 
   SCImago Journal & Country Rank

2021 Impact Factor: 4.53
5-Year Impact Factor: 3.668

Aerosol and Air Quality Research partners with Publons

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.