Do high power microwaves ionise water molecules and/or rearrange food molecules?

In summary: I can't find an Indian style microwave that doesn't create harmful chemicals.student:I have come across claim that microwaved food is safe for health as long as the food is microwaved on a low power.This is because microwaves oven that are used on high power can strip ionise a water molecule and rearraange atoms in food, which changes their molecular structure.If this is so, then should we not only use microwaves on low power ONLY?Regards
  • #1
student_
9
0
Ok, this is a separate topic about Microwaves.

I have come across claim that microwaved food is safe for health as long as the food is microwaved on a low power.

This is because microwaves oven that are used on high power can strip ionise a water molecule and rearraange atoms in food, which changes their molecular structure.

If this is so, then should we not only use microwaves on low power ONLY?

Regards

student_
 
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  • #2
Let me ask: Are you willing to give up on grilled food and fried food? If not, any worries about microwaves are absurd. The tendency of the former to create carcinogens is well established. The tendency of the latter to create harmful chemicals in actual cooking has never been established.

FYI: I have no intention of giving up grilled food, or microwave food.
 
  • #3
PAllen has a good point. All cooking will cause chemical reactions in food. That's kinda the point. But they aren't very discriminate about it.

For example, any time you burn something (like in an oven, stovetop or BBQ), you are creating PAHs (poly aromatic hydrocarbons), which are known carcinogens.

Very difficult to burn something in a microwave.
 
  • #4
student_ said:
If this is so, then should we not only use microwaves on low power ONLY?

Only if you want to die from the salmonella, listeria, e.coli, etc, that will survive your undercooking.
 
  • #5
i would just say heat things slowly, especially if there is a lot of oil or fat. microwaves do not just heat water molecules. and unlike water, fats can have boiling temperatures much higher than 100C. i think this is much of the reason food that is "nuked" on high often tastes bad. it also can screw up your plastic containers.

i don't "cook" anything in a microwave, save popcorn. and what i reheat, i do slowly so that i do not overheat the fats, and the taste doesn't come out mangled.
 
  • #6
Proton Soup said:
it also can screw up your plastic containers.
I do believe that plastic food containers are not designed for microwaves. It blisters them in who knows what kind of chemical reaction.
 
  • #7
DaveC426913 said:
I do believe that plastic food containers are not designed for microwaves. It blisters them in who knows what kind of chemical reaction.

i think the damage is from overheated fats.
 
  • #8
student_ said:
Ok, this is a separate topic about Microwaves.

I have come across claim that microwaved food is safe for health as long as the food is microwaved on a low power.

This is because microwaves oven that are used on high power can strip ionise a water molecule and rearraange atoms in food, which changes their molecular structure.

If this is so, then should we not only use microwaves on low power ONLY?

Regards

student_

The power setting on the microwave only changes the intensity of the microwave radiation, NOT the energy per photon. So, no matter how high the microwave setting, it's the same photons coming out, just more of them. No matter how many of these low energy photons you shoot at water molecules, none of the molecules will be ionized (at least not directly from absorbing a microwave photon. I don't know of any microwaves powerful enough to jiggle the water molecules so much that it turns into a plasma.)
 
  • #9
Proton Soup said:
i would just say heat things slowly, especially if there is a lot of oil or fat. microwaves do not just heat water molecules. and unlike water, fats can have boiling temperatures much higher than 100C. i think this is much of the reason food that is "nuked" on high often tastes bad. it also can screw up your plastic containers.

i don't "cook" anything in a microwave, save popcorn. and what i reheat, i do slowly so that i do not overheat the fats, and the taste doesn't come out mangled.

Well, there is a difference between taste and health (though I never heat in plastic containers at all, based on leaching from the plastic). In no way would I claim it is certain that microwaves can't produce harmful chemicals during cooking, just that it has never been established, while it has been established for several other cooking methods that are delicious.

In pyrex, porcelain or microwave safe ceramic containers, I've not had any problem with fats (taste or otherwise), but definitely avoid warming breads or pastries in microwave, purely due to adverse taste and texture. In a pinch, I do pizza slices, but the crust is always ruined in taste and texture.

As for power, I use high to heat liquids, medium-high for most other food, low for defrosting.

As for cooking, I think the only issue is flavor. Flame based cooking tastes better, but I suspect is more harmful than microwave cooking. There is only one Indian stew I currently cook in a microwave.
 
  • #10
Jack21222 said:
So, no matter how high the microwave setting, it's the same photons coming out, just more of them. No matter how many of these low energy photons you shoot at water molecules, none of the molecules will be ionized (at least not directly from absorbing a microwave photon.

The observation of this principle is, by the way, that for which Einstein earned his Nobel Prize.

Note that the infrared and visible radiation from a red hot heating element in a conventional oven has more potential to ionize molecules in the food.

Now if you put flecks of metal in the food and let them arc in the microwave you might get something going that way.
 
  • #11
Member was previously warned.
 

1. Do high power microwaves ionise water molecules?

Yes, high power microwaves can ionize water molecules. When microwaves pass through water molecules, they cause them to vibrate rapidly, which can lead to the breaking of chemical bonds and the formation of ions.

2. Can high power microwaves rearrange food molecules?

Yes, high power microwaves have the ability to rearrange food molecules. The rapid vibration of water molecules in food can cause them to collide and break apart, leading to the rearrangement of molecules. This can result in changes to the texture and flavor of food.

3. Is it safe to consume food cooked with high power microwaves?

Yes, it is generally safe to consume food cooked with high power microwaves. The Food and Drug Administration (FDA) has strict guidelines and regulations in place to ensure that microwaves are safe for food consumption. However, it is important to follow proper microwave cooking instructions and to use microwave-safe containers to avoid any potential hazards.

4. Can high power microwaves cause harmful effects on the human body?

High power microwaves can potentially cause harm to the human body if not used properly. Exposure to high levels of microwaves can lead to burns, eye damage, and even tissue damage. It is important to use caution and follow safety guidelines when using high power microwaves.

5. How do high power microwaves affect the nutritional value of food?

High power microwaves can affect the nutritional value of food in several ways. The rapid heating and rearrangement of food molecules can lead to the loss of certain nutrients, such as vitamin C and B vitamins. However, compared to other cooking methods, microwaves can actually help retain more nutrients due to their shorter cooking times. Overall, the impact of high power microwaves on the nutritional value of food is minimal.

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