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Critical Reviews in Environmental Science and Technology Volume 50, 2020 - Issue 20
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Original Articles

Disinfection options for irrigation water: Reducing the risk of fresh produce contamination with human pathogens

Catherine E. DandieFuture Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia; Correspondence[email protected]
ORCID Iconhttp://orcid.org/0000-0002-8699-6894View further author information
ORCID Icon,
Abiodun D. OgunniyiFuture Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia; ORCID Iconhttp://orcid.org/0000-0001-9308-5629View further author information
ORCID Icon,
Sergio FerroEcas4 Australia Pty Ltd, Mile End South, South Australia, Australia; ORCID Iconhttp://orcid.org/0000-0003-0797-795XView further author information
ORCID Icon,
Barbara HallPlant Health and Biosecurity, SARDI, Adelaide, South Australia, Australia; View further author information
,
Barbara DrigoFuture Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia; View further author information
,
Christopher W. K. ChowNatural and Built Environments Research Centre, School of Natural and Built Environments, University of South Australia, Mawson Lakes, South Australia, Australia; ORCID Iconhttp://orcid.org/0000-0001-5829-8944View further author information
ORCID Icon,
Henrietta VenterSchool of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, AustraliaORCID Iconhttp://orcid.org/0000-0001-5569-7755View further author information
ORCID Icon,
Baden MyersNatural and Built Environments Research Centre, School of Natural and Built Environments, University of South Australia, Mawson Lakes, South Australia, Australia; ORCID Iconhttp://orcid.org/0000-0002-6120-5363View further author information
ORCID Icon,
Permal DeoSchool of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, AustraliaORCID Iconhttp://orcid.org/0000-0002-6477-9127View further author information
ORCID Icon,
Erica DonnerFuture Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia; ORCID Iconhttp://orcid.org/0000-0001-6465-2233View further author information
ORCID Icon &
Enzo LombiFuture Industries Institute, University of South Australia, Mawson Lakes, South Australia, Australia; ORCID Iconhttp://orcid.org/0000-0003-3384-0375View further author information
ORCID Icon show all
Pages 2144-2174 | Published online: 19 Dec 2019
 
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Abstract

The growing health and economic burden posed by foodborne pathogens has stimulated global interest in the development of safe, affordable, effective and environmentally-sustainable irrigation water treatment technologies. This review critically compares the potential of existing and emerging methods for disinfection of irrigation water to reduce pathogenic microbial loads on high-risk vegetables and minimally processed fresh produce. We explore electrochemical disinfection and electrolyzed oxidizing water as alternatives to traditional chlorination, and identify hydrodynamic cavitation as an emerging disinfection strategy worthy of further investigation in this context. In addition, we assess the state of the knowledge regarding the impact of current water sanitation strategies on the ecological dynamics of plant and soil microbes and the potential induction of viable but nonculturable cells. Increased research in these areas could translate into substantial improvement in the overall quality and value of fresh produce, while maintaining environmentally-sustainable irrigation water usage.

Graphical Abstract

Additional information

Funding

This work was supported by Horticulture Innovation Australia (VG15068).

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