Communication

Effective elimination of water-borne Escherichia coli using archaeal poly-g-glutamate-based materials

  • Received: 27 April 2016 Accepted: 05 July 2016 Published: 06 July 2016
  • Escherichia coli is used worldwide as a fecal indicator species to assess the quality of (drinking) water. Active carbons are used for the removal of chemical pollutants, but are ineffective in the inactivation of water-borne pathogens such as E. coli. Herein, we developed poly-g-glutamate-ion complex-coated active carbons (PGAIC-AC) and examined their ability to eliminate E. coli from a laboratory model of water pollution (~ 2.0 × 104 CFU/mL) at room temperature. The results showed that E. coli was virtually eliminated when using PGAIC-AC as a dispersant. In fact, the log reduction values were estimated to be > 1.19. In this study, we further constructed simple but effective bacteria-elimination system with a PGAIC-AC–embedded column. This PGAIC-AC system can be utilized to purify water when no electricity or specialized equipment is available.

    Citation: Yuichi Hakumai, Kanae Yamaguchi, Sawami Nakayama, Makoto Ashiuchi. Effective elimination of water-borne Escherichia coli using archaeal poly-g-glutamate-based materials[J]. AIMS Microbiology, 2016, 2(3): 222-229. doi: 10.3934/microbiol.2016.3.222

    Related Papers:

  • Escherichia coli is used worldwide as a fecal indicator species to assess the quality of (drinking) water. Active carbons are used for the removal of chemical pollutants, but are ineffective in the inactivation of water-borne pathogens such as E. coli. Herein, we developed poly-g-glutamate-ion complex-coated active carbons (PGAIC-AC) and examined their ability to eliminate E. coli from a laboratory model of water pollution (~ 2.0 × 104 CFU/mL) at room temperature. The results showed that E. coli was virtually eliminated when using PGAIC-AC as a dispersant. In fact, the log reduction values were estimated to be > 1.19. In this study, we further constructed simple but effective bacteria-elimination system with a PGAIC-AC–embedded column. This PGAIC-AC system can be utilized to purify water when no electricity or specialized equipment is available.


    加载中
    [1] Ashbolt NJ (2004) Microbial contamination of drinking water and disease outcomes in developing regions. Toxicology 198: 229–238. doi: 10.1016/j.tox.2004.01.030
    [2] World Health Organization, The top 10 causes of death. World Health Organization, 2014. Available from: http://www.who.int/mediacentre/factsheets/fs310/en/.
    [3] Ministry of Health, Labour and Welfare, Food poisoning statistics document. Ministry of Health, Labour and Welfare, 2005–2014. Available from: http://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/shokuhin/syokuchu/04.html.
    [4] Hu J, Aarts A, Shang R, et al. (2016) Integrating powdered activated carbon into wastewater tertiary filter for micro-pollutant removal. J Environ Manage 177: 45–52.
    [5] Ashiuchi M (2013) Microbial production and chemical transformation of poly-γ-glutamate. Microb Biotechnol 6: 664–674.
    [6] Ashiuchi M, Fukushima K, Oya H, et al. (2013) Development of antimicrobial thermoplastic material from archaeal poly-g-L-glutamate and its nanofabrication. ACS Appl Mater Interfaces 5: 1619–1624. doi: 10.1021/am3032025
    [7] Ashiuchi M, Hakumai Y, Shibatani S, et al. (2015) Poly-g-glutamate-based materials for multiple infection prophylaxis possessing versatile coating performance. Int J Mol Sci 16: 24588–24599.
    [8] Alm EW, Burke J, Hagan E (2006) Persistence and potential growth of the fecal indicator bacteria, Escherichia coli, in shoreline sand at Lake Huron. J Gt Lakes Res 32: 401–405.
    [9] Evans TM, Waarvuck CE, Seidler RJ, et al. (1981) Failure of the most-probable-number technique to detect coliforms in drinking water and raw water supplies. Appl Environ Microbial 41: 130–138.
    [10] Suhalima R, Huanga YW, Burtle GJ (2008) Survival of Escherichia coli O157:H7 in channel catfish pond and holding tank water. LWT-Food Sci Technol 41: 1116–1120.
    [11] Kasımoğlu A, Akgün S (2004) Survival of Escherichia coli O157:H7 in the processing and post-processing stages of acidophilus yogurt. Int J Food Sci Technol 39: 563–568.
    [12] Hakumai Y, Oike S, Shibata Y, et al. (2016) Cooperative adsorption of critical metal ions using archaeal poly-γ-glutamate. BioMetals 29: 527–534.
    [13] Ghaedi M, Ghaedi AM, Negintaji E, et al. (2014) Random forest model for removal of bromophenol blue using activated carbon obtained from Astragalus bisulcatus tree. J Ind Eng Chem 20: 1793–1083.
    [14] Sampranpiboon P, Charnkeitkong P, Feng X (2014) Equilibrium isotherm models for adsorption of zinc (II) ion from aqueous solution on pulp waste. WSEAS Trans Environ Dev 10: 35–47.
    [15] Langmuir I (1916) The adsorption of gases on plane surface of glass, mica and platinum. J Am Chem Soc 40: 1361–1403.
    [16] World Health Organization and United Nations Children's Fund (2006) Meeting the MDG drinking-water and sanitation target: The urban and rural challenge of the decade. World Health Organization and United Nations Children's Fund. Available from: http://www.who.int/water_sanitation _health/monitoring/jmp2006/en/.
    [17] United Nations Population Fund (2006) State of World Population 2006. United Nations Population Fund. Available from: http://www.unfpa.org/publications/state-world-population-2006.
    [18] World Health Organization (2004) Water, sanitation and hygiene links to health. World Health Organization. Available from: http://www.who.int/water_sanitation_health/facts2004/en/.
    [19] Udomchoke V, Sunthornranun P, Apisit Songsasen A, et al. (2010) The ecological complexity of the Thai-Laos Mekong River: I. Geology, seasonal variation and human impact assessment on river quality. J Environ Sci Health A: Toxic/Hazard Subst Environ Eng 45: 1661–1673.
  • Reader Comments
  • © 2016 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0)
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Metrics

Article views(4115) PDF downloads(1082) Cited by(1)

Article outline

Figures and Tables

Figures(3)  /  Tables(2)

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return

Catalog