Navigation Links
Lettuce, leafy greens and E. coli

The rise in year-round consumption of fresh leafy greens such as lettuce and baby spinach is increasing the difficulty of keeping produce free from contamination by food poisoning bacteria, according to US scientists speaking today (Monday 3 September 2007) at the Society for General Microbiologys 161st Meeting at the University of Edinburgh, UK, which runs from 3-6 September 2007.

The only land suitable for supplying this abundance of year-round, high quality, fresh leafy vegetables, which are eaten raw by large populations in Europe and the United States, is in special geographic regions, with ideal soil and climate conditions, says Robert Mandrell from the US Department of Agricultures Research Service in Albany, California.

This move to the year-round supply of leafy vegetables has required new methods to clean, package and deliver rapidly these fragile food items across large distances to consumers in many parts of the world. These include harvesting mowers for some leafy greens, processing in water flumes and triple washing, and modified atmosphere packaging for extended shelf-life.

Recent food scares and food poisoning outbreaks have led to intensive investigations of farms and ranches. These have shown that at least some food poisoning bacteria outbreaks have been due to field contamination before the greens are even harvested.

This situation complicates strategies for eliminating illnesses and outbreaks due to the complex ecosystem of multiple potential sources, such as water, wildlife, and nearby livestock, all of which could be sources of bacteria causing food poisoning, says Robert Mandrell.

Following wide media coverage of outbreaks caused by E. coli in leafy vegetables and Salmonella in tomatoes, the US fresh produce industry and federal and state agencies are trying to address the microbial food safety of leafy greens and other vegetables. Major US produce industry associations have worked together to establish a marketing agreement, a set of food safety guidelines (metrics) for growers to produce and harvest leafy greens, and have increased funding for research.

Probably, a convergence of unusual events is required for very large outbreaks to occur, a factor everyone is hoping will not affect 2007 harvests. Logical theories about pre-harvest contamination provide points for study, but no definitive conclusions about the most recent outbreaks can be provided. Fresh, minimally processed leafy greens are here to stay, if the industry continues to work hard to re-establish consumer confidence.

Contact: Lucy Goodchild
Society for General Microbiology

Related medicine news :

1. Skin Cancer Risk Reduced by Taking Green Leafy Vegetables
2. Eat greens to have a ever green heart
3. Eating Greens fights cancer
4. Indians are certainly having their greens and eating them too!
5. Why some take to greens, while others don’t
6. Britishers Prefer Gambling to Greens
Post Your Comments:
(Date:11/25/2015)... ... , ... Beddit® has launched a new Android app for use ... a more intuitive SleepScore™ that rates sleep quality on a 100-point scale and makes ... by a proprietary algorithm. Beddit analyzes the data to provide an easy to understand ...
(Date:11/25/2015)... , ... November 25, 2015 , ... ... provide scholarships for people struggling with eating disorders as a result of the ... second annual event, held at Fox Run Golf Club in Eureka, will help ...
(Date:11/25/2015)... ... 2015 , ... Many people know of the common symptoms of low thyroid ... skin. But many people who find their cholesterol levels and weight are creeping up ... especially if they don’t have any of the other symptoms. , Thyroid hormone plays ...
(Date:11/24/2015)... ... 2015 , ... Genesis Chiropractic Software helps practice owners automate ... between the practice owner and the patient that automatically manages all five aspects ... Click here to learn more. , According to Dr. Brian ...
(Date:11/24/2015)... Dallas, Texas (PRWEB) , ... November 24, 2015 , ... ... of all charitable donations are made in the last five weeks of the year ... #GivingTuesday was created in 2012 to connect the nation’s charities with those individuals who ...
Breaking Medicine News(10 mins):
(Date:11/25/2015)... 2015 Research and Markets ( ) ... - Global Forecast to 2020" report to their ... for 37.21% of the total market share in 2014. ... region is projected to growth at the highest CAGR ... primarily to the fast growing water, industrial gas treatment, ...
(Date:11/24/2015)... 25, 2015 WuXi PharmaTech (Cayman) Inc. ("WuXi" ... open-access R&D capability and technology platform company serving the ... China and the ... extraordinary general meeting of shareholders held today, the Company,s ... and approve the previously announced agreement and plan of ...
(Date:11/24/2015)... N.C. , Nov. 24, 2015  In the ... projects in an effort to quickly uncover new insights, ... --> --> However, ... a market research project and ensure that all rules ... and industry standards. Another major barrier to efficiently launching ...
Breaking Medicine Technology: