7 Foods Items That Can Turn Toxic When Reheated (2024)

Oct 17, 2023, 07:14 PM IST

Trisha Pathak

Vegetables With High Amounts of Nitrate

Vegetables with high amounts of nitrate, like carrots, turnips, celery, or spinach, can turn toxic when reheated. Such reheated vegetables have carcinogenic properties.

Rice

you can get food poisoning from eating reheated rice. It’s not the reheating that causes the problem, but how you store it before reheating.

Potatoes

Potatoes are easy to store, reheat and consume. However, if you reheat them again, they might produce Clostridium Botulinum (bacteria causing botulism).

Mushrooms

Eating reheated mushrooms can cause havoc with your digestive system, as reheating breaks the present protein, generating toxins containing oxidised nitrogen and free radicals.

Cold Pressed Oil

Omega-3 present in cold-pressed oil is sensitive to temperature. It breaks and becomes rancid above 40 degrees Celsius.

Eggs

Eggs contain a lot of protein. When reheated, they might be exposed to high temperatures which may destabilise its protein and make it toxic.

Chicken

Just like eggs and mushroom, reheating can have a negative impact on the protein present in the chicken.

7 Foods Items That Can Turn Toxic When Reheated (2024)

FAQs

What foods are toxic when reheated? ›

The 9 foods you should never reheat or risk potentially deadly consequences
  • Rice. First up on the watch list is any dish involving rice - think curries, stir fries and risottos. ...
  • Eggs. Eggs shouldn't be reheated full stop, according to Dr Duvenage. ...
  • Mushrooms. ...
  • Spinach. ...
  • Potatoes. ...
  • Seafood. ...
  • Chicken. ...
  • Oil.
Sep 25, 2023

Why shouldn't spinach be reheated? ›

' But under certain conditions and at particular temperatures, bacteria convert nitrates into nitrite, which can then be converted into carcinogenic nitrosamines in the body. De Vries: 'That conversion of nitrate into nitrite only happens at high temperatures.

Is it safe to reheat potatoes in the microwave? ›

So, as soon as your potatoes have cooled down after being cooked, get them in the fridge. Then your best bet for reheating them is popping your potatoes in the microwave for 3 - 4 minutes, or until piping hot.

Is it bad to reheat scrambled eggs? ›

Rather, the more significant effects are likely changes in texture and potentially flavor. Reheated egg dishes may become dry or rubbery. Regarding safety, as long as egg dishes are stored properly and then reheated to a recommended temperature, it's generally considered safe to eat leftover eggs.

Is it safe to warm up eggs? ›

Yes, you can reheat eggs. However, eggs can be cooked in several different ways and not all types of cooked eggs will warm up well. Hard-boiled eggs, both in and out of their shell, can be safely reheated. To do so, place them in a bowl, cover them with boiling water and let them stand for several minutes.

Why shouldn't eggs be reheated? ›

Eggs. Nicolaisen and Stevens say you should avoid eating leftover eggs. "Other than the texture becoming rubbery, reheating eggs can be bad for you if reheated too long or multiple times," Nicolaisen explained. "Eggs turn green from overcooking by the nitrogen oxidizing, and therefore can actually make you sick."

What is the healthiest way to reheat food? ›

Mar 24, 2023
  • On stove top: Place food in pan and heat thoroughly. ...
  • In oven: Place food in oven set no lower than 325 °F. ...
  • In microwave: Stir, cover, and rotate fully cooked food for even heating. ...
  • Not Recommended: Slow cooker, steam tables or chafing dishes.
Mar 24, 2023

What food is good reheated? ›

Foods to Reheat on the Stovetop
  • Soups, stews, and chilis. With these foods that contain a lot of moisture, a saucepan or pot with a lid will do the trick.
  • Pizza. ...
  • Rice, pasta, and noodles. ...
  • Sautes and stir-fries. ...
  • Meat.

What meat can you not reheat? ›

Reheating chicken is not advisable more generally because it has a higher density of protein than red meat - when reheated, proteins break down differently and can upset the stomach.

Are reheated potatoes better for you? ›

If you eat potatoes when they're cold, as in potato salad, or chilled and reheated, you can get a nearly 40 percent lower glycemic impact.

Why should you never reheat food twice? ›

If food has been hygienically prepared, cooled quickly after cooking (or reheating) and stored cold, reheating more than once should not increase the risk of illness. However, prolonged storage and repeated reheating will affect the taste, texture, and sometimes the nutritional quality of foods.

What foods should you not reheat in the microwave? ›

6 Foods You Shouldn't Reheat In The Microwave
  • Reheating Eggs.
  • Reheating Pasta.
  • Reheating Casseroles.
  • Reheating Pizza.
  • Reheating Fried Food.
  • Reheating Really Old Leftovers.
Feb 3, 2023

Which vegetables should not be reheated? ›

These are some of the foods that shouldn't be reheated and consumed later.
  • Potato. Even though a popular food item, it isn't too safe to reheat potatoes. ...
  • Spinach and leafy vegetables. Leafy vegetables are storehouses of nutrients and nitrates. ...
  • Chicken. ...
  • Egg. ...
  • Oils and fats.
Aug 9, 2023

Can reheating food be hazardous? ›

When it comes to reheating foods, toxins pose the greatest risk of illness. The risk increases in foods which have been poorly handled or cooled too slowly after initial cooking or reheating, since these conditions may allow toxin-producing bacteria to grow and proliferate.

Which of the following is not a safe step in reheating foods? ›

Not Recommended: Slow cooker, steam tables or chafing dishes. Reheating leftovers in slow cookers, steam tables or chafing dishes is not recommended because foods may stay in the "Danger Zone," between 40 °F and 140 °F too long. Bacteria multiply rapidly at these temperatures.

What must hazardous foods be reheated to? ›

Potentially hazardous food that requires reheating must be reheated rapidly (in under 2 hours) to 60°C or hotter. Potentially hazardous food should be discarded and never reheated a second time.

How to prevent food poisoning bacteria when reheating foods? ›

To prevent food poisoning from hot food:
  1. make sure hot foods are hot (above 60°C)
  2. keep food at 60ºC or above until served.
  3. refrigerate or freeze food that is to be prepared well in advance and reheat to steaming hot before serving.
May 24, 2022

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