Navigation Links
Ozone reduces fungal spoilage of fruits and vegetables
Date:4/10/2011

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
l.udakis@sgm.ac.uk
44-118-988-1843
Society for General Microbiology
Source:Eurekalert  

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:
*Name:
*Comment:
*Email:
Related Image:
Ozone reduces fungal spoilage of fruits and vegetables
(Date:12/7/2016)... According to a new market research report "Emotion Detection and Recognition Market ... Application Area, End User, And Region - Global Forecast to 2021", published by ... 2016 to USD 36.07 Billion by 2021, at a Compound Annual Growth Rate ... ... MarketsandMarkets Logo ...
(Date:12/6/2016)... Valencell , the leading innovator in ... a third consecutive year of triple digit growth for ... with a 360 percent increase in companies who have ... driven by sales of its wrist and ear Benchmark™ ... technology for hearables for fitness and healthcare applications. ...
(Date:11/30/2016)... Nov. 30, 2016 Not many of us realize that we spend ? ... so we need to do it well. Inadequate sleep levels have been found to ... stroke, diabetes, and even cancer. Maybe now is the best time to ... help them to manage their sleep quality? Continue Reading ... ...
Breaking Biology News(10 mins):
(Date:12/8/2016)...  OncoSec Medical Incorporated ("OncoSec") (NASDAQ: ... immunotherapies, today announced financial results for the fiscal ... delivering on our commitment to address an unmet ... are pleased with the early clinical response data ... are focused on advancing our lead program – ...
(Date:12/8/2016)... 2016 AskLinkerReports.com has published a report ... Amyloglucosidase Industry 2016 Market Research Report. From a basic outline ... overview are all covered in the report. This report projects ... analysis of the Amyloglucosidase industry. ... , , ...
(Date:12/8/2016)... , Dec. 8, 2016  Renova™ Therapeutics, a ... heart failure and type 2 diabetes, announced that ... novel adeno-associated virus (AAV) vector developed in the ... Ph.D., at Stanford University. The company plans to ... gene therapy product pipeline. "Early ...
(Date:12/8/2016)... ... December 08, 2016 , ... ... cells — optogenetics — is key to exciting advances in the study and ... patterned light projected via free-space optics stimulates small, transparent organisms and excites neurons ...
Breaking Biology Technology: