Can I eat overnight dishes?

It is said that "thrift is the traditional virtue of the Chinese nation", but faced with the leftovers at home, many people have made difficulties in their hearts: throw it away, it's a pity; eat it hot the next day, " The words "excessive nitrite", "carcinogenic" and "poisoning" make people worry again.

Can I still eat overnight dishes? Which dishes should be thrown away without hesitation and which ones can be saved for the next meal? And how should we handle overnight dishes scientifically? Today, I am here to answer you all

1

Overnight dishes contain nitrites

Toxic and carcinogenic?

First of all, let's be clear: the so-called "overnight dishes" do not just refer to the dishes left over from the day and put on the next day

And the longer the food is placed, the nitrite content in it will also increase

Nitrite itself is not carcinogenic

In fact, nitrite itself is not carcinogenic

In addition, nitrite is also a food preservative that can be legally used.

Under certain conditions, nitrite is toxic

However, everyone always says that overnight vegetables are toxic and cause cancer, and it is not entirely groundless:

On the one hand, if excessive nitrite is ingested in a short period of time, it will cause acute poisoning, affecting the operation of red blood cells, making the blood unable to transport oxygen

On the other hand, after nitrite enters the acidic environment of the stomach, it will react with the protein eaten to produce nitrosamines that are truly carcinogenic

　　·Is the nitrite in the overnight dishes exceeding the standard?

　　According to relevant domestic research reports, the minimum toxic dose of oral nitrite for adults is about 300mg-500mg, and ingestion of 1-3g can lead to death

　　what is this concept? Generally, overnight dishes (excluding pickled vegetables and processed meats) that are stored in the refrigerator for 24 hours, the nitrite content will not exceed 10mg/kg

　　Therefore, the nitrite content in overnight dishes is still far from the toxic dose.

　　2

　　These 4 Overnight Dishes Are Too Dangerous

　　It's best to throw it away if you can't finish it!

　　So, can overnight dishes be eaten with confidence? no!

　　This is because the storage and reheating of overnight meals will not only lead to the destruction and loss of some nutrients, but also easily breed bacteria, which can easily cause gastrointestinal discomfort and even food poisoning after eating

　　· Overnight vegetables

　　Eating vegetables often has many benefits.

　　After cooking, if the vegetables are left for too long or stored improperly, a large amount of nitrite will be produced under the decomposition of nitrifying bacteria, so that the content of the leftovers is likely to reach the severe limit

　　Zhejiang Ningbo Food Inspection Institute once conducted an experiment and found that green leafy vegetables such as celery and water spinach were fried and stored in a normal temperature environment of 25°C.

　　Leafy greens are strongly recommended not to be consumed overnight

　　· Overnight seafood

　　For seafood products such as shrimp and crab, it is difficult to completely eliminate all kinds of bacteria that may exist in the seafood itself by ordinary cooking and eating methods.
corruption!

　　If you do not eat it overnight and then eat it overnight, it may cause bacteria to multiply and produce bacterial toxins, resulting in liver and kidney damage
.

　　· Overnight Tremella mushrooms

　　Many people will stew a pot of white fungus soup and put it in the refrigerator and eat it several times
.
But this approach is actually very dangerous!

　　Generally speaking, dried white fungus and mushrooms, whether they are cultivated indoors or collected in the wild, have lower nitrite content than vegetables
.
However, if it is soaked at room temperature for a long time, or it is left for a long time after cooking, it will not only lead to an increase in the production of nitrosamines after eating, but also it is easier to breed bacteria.
, after eating, there will be abdominal pain, diarrhea and other symptoms
.

　　[Tips]: Seal the tremella soup and store it in the refrigerator for 1-2 days, it is okay; but if it exceeds 3 days, it is best not to drink it; and the leftover tremella in the bowl, if it is not refrigerated, the second It's best not to eat it
.

　　· Overnight "soft-hearted egg"

　　Compared with hard boiled eggs, many people prefer to eat half-cooked "soft-hearted eggs"
.
However, this half-boiled egg is not completely sterilized, and may contain various pathogenic bacteria such as Salmonella; it is more likely to breed bacteria if it is stored for a long time, and it will harm the intestines after eating
.

　　[Tips]: If the eggs are cooked for the first time and stored in a low temperature and sealed condition, it is generally not a problem to eat them overnight
.

　　3

　　Leftovers, leftovers scientific storage

　　eat more safely

　　In general, it is best to eat and cook as much food as you want.
If you cook too much, you can't finish it.
If there are any leftovers, you can deal with the following 4 points:

　　·I would rather leave meat dishes than vegetarian vegetables

　　When leftovers are destined to be eaten in one meal, the vegetables should be eaten first, and the meat and vegetables that cannot be eaten can be left for the next meal
.

　　For details, please refer to the following save time rankings:

　　Green leafy vegetables: storage time 0 days (cold dishes should be eaten as soon as possible);

　　Staple food: storage time 1 to 2 days;

　　Livestock, poultry and meat dishes: the preservation time should not exceed 3 days
.

　　· Don't wait until it's completely cold

　　The longer leftovers and leftovers sit at room temperature, the greater the risk of bacterial growth; and some of these bacteria produce toxins that may not be killed by normal home cooking
.

　　Therefore, when the dishes are cool to a temperature that is not hot to the hand, everyone can use the crisper to pack them in the refrigerator, and don't wait until they are completely cool before putting them
.

　　· The leftovers are kept in the refrigerator, and the location is also critical

　　①The upper layer of the refrigerated area: you can put leftover meals and other cooked foods;

　　②The middle of the refrigerated area: suitable for placing fruits and vegetables;

　　③The bottommost constant temperature refrigeration area: you can put eggs, dairy products, soy products and the meat you want to eat that day
.

　　In this way, the raw and cooked food are separated, which can prevent some parasites and bacteria carried in the raw food from falling onto the cooked food such as leftovers when taking it, and reduce the risk of cross-infection
.

　　· Warm up thoroughly before eating

　　Be sure to warm up leftovers thoroughly before eating, especially meat
.
Thorough heating refers to heating the whole dish to 100°C and keeping it boiling for more than 3 minutes
.

　　In order to avoid uneven heating, you can use chopsticks, forks and other tools to look at the inside of the food to make sure that it is fully heated before serving
.