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Food Handling Lesson Polls Poll based lessons. See what misconceptions our general population has regarding food safety and preparation.


View Poll Results: Vegetables like celery and leaf lettuce can cause cross contamination because they:
Have a high yeast content 0 0%
Have a high protein content 0 0%
Carry Aerobic bacteria 6 33.33%
Carry bacteia that grows in soil 12 66.67%
Voters: 18. You may not vote on this poll

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Unread 05-25-2006, 03:07 PM   #1
bbqjoe
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Default Cross contamination

Cross contamination occurs when a contaminated food contaminates a surface or utensil, and that surface or utensil is used again to prepare something else. The same goes for the use of hands.
This is why we don't prepare raw meat on a cutting board, plate, pan etc. and then use that same item for cooked meat or another product without washing it inbetween procedures.

Vegetables such as leaf lettuce and celery can also cause cross contamination.
The question is: How do they cause contamination?
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The answer is because of bacteria in the soil.

Last edited by bbqjoe; 05-26-2006 at 01:17 PM..
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Unread 05-26-2006, 06:14 PM   #2
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Any thoughts here guys?
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Unread 05-26-2006, 08:29 PM   #3
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my first thought is cooking meat correctly kills the bad stuff, but does simply rinsing vegetables (and eating them raw) enough to remove the bad stuff???
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Unread 05-27-2006, 01:52 AM   #4
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yes, are we talkign about the same meat born stuff, like e.coli, samonella, triconosis(sp), mad cow.....etc.. meat diseases...??? they are in soil and on veggies too?
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Unread 05-27-2006, 10:40 AM   #5
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Good question Phil,

Pathogens related to vegetables:

E-coli 0157:H7...........Alfalfa sprouts, lettuce,raw ground beef.
Salmonella........Raw fruits and vegetables.
Bacillus Ceres.......Grains, meats, vegetables.

Vegetables can also carry Hepatitis A when infected through poor handling from an infected person.

Of course there are other things such as parasites, fertlizers, pesticides.....
that can contaminate veggies.
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Unread 05-27-2006, 04:15 PM   #6
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I've heard that lettuce can be as significant a source of salmonella as chicken, but maybe it was e. coli. Anyway, evidently some of the pre-washed bagged salads have turned out to be not-so-washed here lately.
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Unread 05-28-2006, 10:49 AM   #7
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Quote:
Originally Posted by VitaminQ
I've heard that lettuce can be as significant a source of salmonella as chicken, but maybe it was e. coli. Anyway, evidently some of the pre-washed bagged salads have turned out to be not-so-washed here lately.
The problem here, is when any food is over or highly processed, the risk of contamination is greater.
If the outside of the lettuce had some form of contamination, you wouldn't know it at home. But chances are that you would probably discard the few outside layers anyway. You are probably only using a head or two, or maybe less for your salad or whatever.

But here you have a factory that might not have as stringent of a quality control system,processing tons of material at a time.
One contaminated head of lettuce gets into this process and is chopped and exposed to all the others, contaminating everything.

Then this stuff is bagged, and sits for how long in warehouses and trucks before you get it, giving it a good long time for the bacteria to multiply.
Especially now with all the exposed cut edges of the lettuce.

A salad really isn't that hard to make, so I would suggest staying away from the processed bagged stuff.
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Unread 05-28-2006, 04:28 PM   #8
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"A salad really isn't that hard to make, so I would suggest staying away from the processed bagged stuff."

I hate to speak in generallities, but there was recently a major recall of bagged lettuce produced in the upper Midwest. If I remember correctly, the soil had been amended with animal manure. This has been common practice all over for eons!
Anyway, the lettuce was "washed", processed for bagging, and bagged.
Cooties were still on lettuce and caused some major sicknesses.
That is the gist of what I remember without looking it all up again

Anyway, we buy local greens most of the time--never factory bagged.

Peice of cake to clean and prep!

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