The rise in year-round consumption of fresh leafy greens such as lettuce and baby spinach is making it more difficult to keep produce free from contamination by food poisoning bacteria, said a U.S. scientist Monday at the Society for General Microbiology's conference at the University of Edinburgh.
"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," said Robert Mandrell from the U.S. Department of Agriculture's 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.
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.
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