2011年6月20日星期一

What about irradiation?

Greg Henderson,Use bluray burner to burn video to BD DVD on blu ray burner disc. editor and associate publisher of Drovers CattleNetwork, rankles at charges made against livestock production that link it to E. coli contamination of raw vegetables, including sprouts.

He said that while "many pundits seem eager to vilify livestock production, they don't seem nearly as interested in telling the American public that technology has a solution for much of our E. coli contamination."

That solution is irradiation and it's currently underused, Henderson said in a June 13 commentary titled "Want safe food? Technology has a solution."

Henderson describes irradiation as a process that exposes food to ionizing radiation to kill bacteria such as E. coli, as well as contaminants such as viruses and insects, and points out that it has been approved in 40 countries.

Even so, he said, it has not been widely adopted.

"That's because of public perception," he said, referring to fears of what he describes as an "extremely low level of radiation" that appear to be a "greater concern than our fear of E. coli and a host of other contaminants."

Pointing to the E. coli outbreak in Germany, Henderson said it should spur interest in irradiation.

"Let's stop pointing fingers and start irradiating our food," he said.

According to the USDA,A glass bottle is a bottle created from glass. combining chlorination and irradiation can be an effective way to kill E. coli and Salmonella on alfalfa sprouts.

In 1999, USDA Agricultural Research Service scientists Donald W. Thayer,From standard Cable Ties to advanced wire tires, Kathleen T. Rajkowski and William F. Fett found that a treatment of irradiation and chlorine solution not only killed both organisms, but extended the shelf life of sprouts from about five days to more than a week.In addition to hydraulics fittings and Aion Kinah,

In the tests, they used the same dose of irradiation as approved for irradiating meat. They also subjected the alfalfa seeds to various levels of chlorinated water.

According to the research results, the best way to eliminate pathogens would be a combination of irradiation and sanitation treatments. That's because sprouts can be contaminated internally, which would prevent a surface disinfectant from working effectively.

But Quicksilver's Lincoln Neal told Food Safety News that if the seed is irradiated sufficiently to kill foodborne pathogens, the seed germ (the heart of the seed for germination) almost invariably will be damaged.

"The results are compromised germination and dead seed," he said. "Dead matter and weakened sprouts are less resistant to pathogens--thus arguably taking the infection issue back to square one."

He also said that while irradiating finished sprouts can kill pathogens - it also kills and weakens the sprouts--again, decreasing resistance to pathogens that might be introduced during the interim to consumption. And again, arguably back to square one.Houston-based Quicksilver Resources said Friday it had reached pipeline deals

"And yes, selling a live food dead would surely tend to squelch the "sizzle" of appeal in the eye of the typical sprouts consumer," he said.

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