Food Safety Idea for Vegetables

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Broomstick
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Food Safety Idea for Vegetables

Post by Broomstick »

From CNN, the FDA approves irradiation for vegetables
WASHINGTON (AP) -- The government will allow food producers to start zapping fresh spinach and iceberg lettuce with just enough radiation to kill E. coli and other dangerous germs, a key safety move amid increasing outbreaks from raw produce.

The FDA said irradiation doesn't compromise the safety or nutrient value of raw spinach and lettuce.

Irradiated meat has been around for years, particularly ground beef, a favorite hiding spot for E. coli. Spices also can be irradiated.

But there had long been concern that zapping leafy greens with X-rays or other means of radiation would leave them limp. Not so with today's modern techniques. Learn about the science of making food safer »

The Food and Drug Administration determined that irradiation indeed can kill food-poisoning germs and even lengthen the greens' shelf life without compromising the safety or nutrient value of raw spinach and lettuce. The new regulation goes into effect Friday.

"What this does is give producers and processors one more tool in the toolbox to make these commodities safer and protect public health," said Dr. Laura Tarantino, director of FDA's Office of Food Additive Safety.

The Grocery Manufacturers Association had originally petitioned the FDA seeking to expand use of irradiation to many more types of produce several years ago. But in wake of the 2006 E. coli outbreak from spinach -- which killed three people and sickened nearly 200 -- plus a list of lettuce recalls, the industry group asked the FDA to rule on the leafy greens first.

The FDA still is considering what other types of produce might be OK to irradiate. Often mentioned as possible are tomatoes and peppers, which have been the focus of investigators trying to trace this summer's nationwide salmonella outbreak.

E. coli is fairly sensitive to radiation, but salmonella can require more energy. While it's not sterilization, the FDA ruled that food companies could use a dose proven to dramatically reduce levels of E. coli, salmonella and listeria on raw spinach and lettuce -- a dose somewhat lower than meat requires. Learn how to keep your food safe »

The most likely use would be in bagged greens: The entire sealed bag can go under the beam, taking away the risk of recontamination later.

Planning on irradiation isn't an excuse for dirty produce in the first place, Tarantino warned. Growers and processors still must follow standard agricultural and manufacturing processes designed to keep the greens as clean as possible. Consumers, also, should wash the leaves just like they do today.

But increasingly, the raw produce so valued for its nutrition is instead causing outbreaks because of contamination in fields or elsewhere in the chain from farm to table. The spinach outbreak, for instance, was traced to a field that had been contaminated by wild boars. That's prompting new interest in technology.
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While irradiated foods initially caused some consumer concern, Tarantino stressed that the food itself harbors no radiation.

"There is no residue, there's nothing left and certainly no radioactivity left," she said
Frankly, I'd like to see irradiation of at-risk food become as routine as pasteurization is for milk these days. The only downside, aside from Luddites, is that you still have to guard against re-contamination and still have to handle food properly. Even so, folks grasp the concept that pasteurization doesn't excuse filthy dairy farms or eliminate the need to practice proper handling techniques. Perhaps if they called it "radiant pasteurization" it would help drive home this concept.

Anyhow, it would be nice not to have to worry so much about whether vegetables (and presumably fruits, too) are carrying nasty stuff on/in them. Prolonging shelf life is not a bad "side effect" either.
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Post by Darmalus »

I wonder how the procedure works. My mental image is some sort of big refrigerated, irradiated room with a conveyor belt moving food through it, but someone more clever than me probably thought of something even better.

I also wonder if there are any foods that wouldn't benefit from this method, or might even be harmed in some way. I can't think of any that need bacteria in them at consumption.
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Post by Darth Lucifer »

I can see the organic crowd screaming "No nukes!" already.
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Post by Isolder74 »

Darth Lucifer wrote:I can see the organic crowd screaming "No nukes!" already.

Are these the same people that perpetuate the myth that microwaves are Nuclear energy?

Hence people calling microwave cooking nuking stuff? Even though it has more to do with their pocket radio?

If I recall correctly, X-Rays were around long before the Manhattan Project.
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Post by tim31 »

Darmalus wrote:I wonder how the procedure works. My mental image is some sort of big refrigerated, irradiated room with a conveyor belt moving food through it, but someone more clever than me probably thought of something even better.
As long as it has this music, I'm in.

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Post by NoXion »

I like to use the word "nuking" to describe cooking food in a microwave, but I don't use it in a pejorative fashion.

Could ionising radiation be actually used to heat food, or are there issues with making the food radioactive?
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Post by nickolay1 »

NoXion wrote:Could ionising radiation be actually used to heat food, or are there issues with making the food radioactive?
The only practical mechanisms of inducing radioactivity are neutron activation or direct contamination.
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Post by Broomstick »

Darmalus wrote:I wonder how the procedure works. My mental image is some sort of big refrigerated, irradiated room with a conveyor belt moving food through it, but someone more clever than me probably thought of something even better.
Nope, that's about it, really. Well, another variant is to have a big room that you fill up with food, shut a really secure door to keep people from wandering inside at the wrong time, remotely uncovering a radiation source, exposing the food, hiding the rad source, then unloading the room. The conveyor belt system works, too.

The biggest safety issue is really making sure that people aren't inadvertently exposed to radiation, as the levels used can most certainly cause damage (that's sort of the point here - damaging to death bacteria). That's an issue any time radiation is used, I mean, even the folks at the dentist office use lead aprons with the comparatively low level used in their machines, this is not a difficult concept. Food irradiation plants, of course, have different procedures than the dentist, and there needs to be some security involved with bringing and disposing of used radiation sources but nuclear medicine has been doing this sort of thing for decades, it's not rocket science.

I expect that industrial and common food irradiation will lead to an occasional accident, but hell, you should see what farm machinery does to the human body. I think the morbidity and mortality from food irradiation will be less than that from food borne disease, yielding a net benefit.
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Post by Gullible Jones »

I would question how the radiation would denature proteins and the like in the food. Would there, for instance, be an increased chance of allergic response to radiation-denatured proteins?
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Post by Broomstick »

:roll:

No - really, this process has been around for a long time. There should be no surprises. I believe they used it in the space program, back in the 1960's. The radiation levels used aren't high enough to fuck up the food, seriously, you're more in danger from cooking your food on a grill over old fashioned wood fires.
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Now I did a job. I got nothing but trouble since I did it, not to mention more than a few unkind words as regard to my character so let me make this abundantly clear. I do the job. And then I get paid.- Malcolm Reynolds, Captain of Serenity, which sums up my feelings regarding the lawsuit discussed here.

If a free society cannot help the many who are poor, it cannot save the few who are rich. - John F. Kennedy

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Post by Sikon »

Gullible Jones wrote:I would question how the radiation would denature proteins and the like in the food.
For perspective, when proteins are heated enough in cooking, all sorts of denaturization can occur at high temperature. A classic example is how cooking liquid eggs converts them to a solid but edible and tasty mass ready to eat.

A standard radiation dose for food irradiation delivers less raw energy and breaks fewer molecular bonds than cooking would do so, just a small portion of the total but sufficient to kill the average pathogen of concern. It is a particularly good idea for items like fresh raw vegetables which won't be cooked.
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Post by GrandMasterTerwynn »

NoXion wrote:I like to use the word "nuking" to describe cooking food in a microwave, but I don't use it in a pejorative fashion.

Could ionising radiation be actually used to heat food, or are there issues with making the food radioactive?
You could use gamma rays and x-rays to heat up food. Of course, x-rays are highly penetrating, and gamma rays even morseo (meaning you need lots of them to ensure that enough x-rays and gamma rays are absorbed by the food to heat it up.) Anything putting out enough of those to cook food in an acceptable timeframe will probably give you a lethal dose of radiation, rendering you completely incapable of enjoying the aforementioned food.
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Post by Gullible Jones »

Broomstick wrote::roll:

No - really, this process has been around for a long time. There should be no surprises. I believe they used it in the space program, back in the 1960's. The radiation levels used aren't high enough to fuck up the food, seriously, you're more in danger from cooking your food on a grill over old fashioned wood fires.
In that case... forget I asked.
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Post by Napoleon the Clown »

It's about damn time. Irradiated food is safer because it doesn't become radioactive and most of the nasty little microbes die. It's basically win-win. Of course, the majority of people have no damn clue that irradiating food is perfectly safe. There are times I really wish people had to go through a few basic science courses to be able to even vote.
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Post by Death from the Sea »

aside from cleaner food, this will also make it last longer, which is nice because fresh fruits and veggies tend to go bad around my house as we don't eat them all fast enough.
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Post by CorSec »

I think the important question no one is asking is: Will I be able to develop super powers from irradiated vegetables?
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Post by Azazal »

CorSec wrote:I think the important question no one is asking is: Will I be able to develop super powers from irradiated vegetables?

Yes, you power to talk to corn
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