Navigation Links
Ozone reduces fungal spoilage of fruits and vegetables

Storing fruits and vegetables in ozone-enriched environments reduces spoilage explains a scientist at the Society for General Microbiology's Spring Conference in Harrogate. Dr Ian Singleton explains how ozone treatment could be a safe, effective replacement for pesticides as it leaves no residue on foods.

It is estimated that up to 30% of fresh produce can be lost due to microbial spoilage. Dr Singleton from Newcastle University explains that low levels of gaseous ozone are able to prevent fungal spoilage in a wide range of stored fresh produce, including strawberries, tomatoes, grapes and plums. His work has shown that enriching the storage environment with ozone causes a substantial decline in fungal spore production as well as a reduction in visible lesions on fruits that are already infected. Fruit stored at low levels of ozone for up to 8 days prevented almost 95% of disease from developing, depending on the fruit and levels of fungal infection.

Fungal contamination is the most common cause of spoilage of stored fruit, salads and vegetables and the risk of microbial contamination increases with longer storage periods. From the 1950s onwards, heat treatment was replaced with cheap and effective synthetic fungicides, often used in combination with pre-pack sanitation treatment containing chlorine or bromine.

Dr Singleton explains why alternative methods to reduce fungal spoilage are needed. "There are public concerns over pesticide residues on fresh produce. Ozone is a viable alternative to pesticides as it is safe to use and effective against a wide spectrum of micro-organisms. Importantly, it leaves no detectable residues in contrast to traditional methods of preserving fresh produce."

Interestingly, Dr Singleton's team found that exposing tomatoes to ozone before infecting them with fungus also reduced spoilage. "This suggests that ozone treatment exerts a 'memory' or 'vaccination' effect that protects fruit from damage. It is unclear how this phenomenon works, but is certainly worthy of further, detailed investigation," suggested Dr Singleton.

Careful work is also needed to optimize levels of ozone and length of exposure for each variety of produce. "Different fruits have been shown to have different tolerances for ozone. We need to look carefully at how we control the atmospheric concentration of the gas in stores and transit containers, since levels of ozone that are too high can damage produce, causing financial losses"


Contact: Laura Udakis
Society for General Microbiology

Related biology news :

1. Morning-after spike in ozone air pollution from Super Bowl XLV?
2. Study improves accuracy of models for predicting ozone levels in urban areas
3. Key compound of ozone destruction detected
4. Pollution dispersion research aids understanding of 2002 break-up of Antarctic ozone hole
5. Invasive kudzu is major factor in surface ozone pollution, study shows
6. Ozone levels tend to be above recommended levels at this time of year in South West Spain
7. Study links springtime ozone increases above western North America to emissions from abroad
8. Ethanol-powered vehicles generate more ozone than gas-powered ones
9. Ozone layer depletion leveling off
10. Houseplants cut indoor ozone
11. Ozone, nitrogen change the way rising CO2 affects Earths water
Post Your Comments:
Related Image:
Ozone reduces fungal spoilage of fruits and vegetables
(Date:4/28/2016)... and BANGALORE, India , April 28, ... Systems, a product subsidiary of Infosys (NYSE: INFY ... announced a global partnership that will provide end ... use mobile banking and payment services.      (Logo: ... key innovation area for financial services, but it also plays ...
(Date:4/15/2016)... , April 15, 2016  A new partnership ... more accurate underwriting decisions in a fraction of ... competitively priced and high-value life insurance policies to ... With Force Diagnostics, rapid testing (A1C, ... data readings (blood pressure, weight, pulse, BMI, and ...
(Date:3/31/2016)... PROVIDENCE, R.I. , March 31, 2016  Genomics ... leadership of founding CEO, Barrett Bready , M.D., ... addition, members of the original technical leadership team, including ... Vice President of Product Development, Steve Nurnberg and Vice ... have returned to the company. Dr. Bready ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... , June 24, 2016 Epic Sciences ... detects cancers susceptible to PARP inhibitors by targeting ... cells (CTCs). The new test has already been ... in multiple cancer types. Over 230 ... damage response pathways, including PARP, ATM, ATR, DNA-PK ...
(Date:6/23/2016)... ... 23, 2016 , ... Mosio, a leader in clinical research ... Recruitment and Retention Tips.” Partnering with experienced clinical research professionals, Mosio revisits the ... tools, and strategies for clinical researchers. , “The landscape of how patients receive ...
(Date:6/23/2016)... - FACIT has announced the creation of a ... Propellon Therapeutics Inc. ("Propellon" or "the Company"), to ... of first-in-class WDR5 inhibitors for the treatment of ... an exciting class of therapies, possessing the potential ... patients. Substantial advances have been achieved with the ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... and Mold) microbial test has received AOAC Research Institute approval 061601. , “This ... introduced last year,” stated Bob Salter, Vice President of Regulatory and Industrial Affairs. ...
Breaking Biology Technology: