Can't I eat salted eggs?
Cloud unintentional 14:27:11
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Rumor: [cannot eat salted duck eggs] The Hong Kong Food Safety Center published a report yesterday. After detecting 71 types of food in Hong Kong, it found that one type of food may cause liver enlargement, the "PBDE", which affects the development of brain, genital organs and neurobehavior, is the highest in salted eggs. Fortunately, the daily intake of people in Hong Kong is still lower than the international value and does not affect their health. Dizzy, salted duck eggs are the most popular breakfast for mainlanders.
Truth:
What is PBDE?
The toxic compound detected in this spot check in Hong Kong is polybrominated diphenylethers (PBDEs). It is not a specific substance, but a kind of chemical synthesis material.
PBDEs is a commonly used flame retardant to reduce the possibility of fire. Even if the fire is caught, it also delays the spread of the fire, so as to win time for people to escape and save the fire. PBDEs has a high flame retardant efficiency. When a relatively small amount of PBDEs is added to plastics, the flame retardant effect is obvious. The addition of PBDEs has little impact on the properties of the material, so it is more popular, it is widely used in household appliances, furniture, building materials, carpets and other materials.
Why into food?
When "toxic and harmful substances" are found in food, people often think of "illegal addition of black traders ". PBDEs is not the case at all. It does not play a role in adding food, and even blackhearted traders have no motivation to add it. PBDEs mainly come from animals and plants.
PBDEs in plastics are not closely integrated with plastic molecules and will be slowly released and enter the environment. In addition, they are slow to degrade and will exist in the environment for a long time. They will have the opportunity to enter the animal and plant bodies and finally enter the food chain.
The transfer mechanism of PBDEs in the environment is still unclear. However, it has been verified by many tests, including air, soil, dust, and food. It is worth noting that the detected content is increasing year by year.
The impact on health is unclear
In animal experiments, PBDEs showed toxicity to liver, thyroid, and nervous development. For substances such as PBDEs that are easy to access the environment and are hard to degrade, people's intake and quantity are critical issues. There have been some research, but it is still inadequate.
According to the news, the average daily intake and maximum intake of Hong Kong residents are "both lower than Wei's estimated weight of 4 nags per kilogram, which does not pose a risk to the health of Hong Kong residents ". The impression is that this "4 Nak" is a safety line, and it does not constitute a risk to the health. In fact, this is a misunderstanding of the conclusions of the World Health Organization. The World Health Organization believes that the current experimental data is insufficient to establish security standards. The "4 Nak per kilogram per day" refers to the average people's current intake. That is to say, it is only a "fact" and does not involve the determination of whether it is harmful to health. As the old saying goes, "All the toxicity discussed when leaving the dose is a rogue ". Due to the lack of adequate toxicology data, we can only say "what is the harm of high-dose uptake", but there is no way to talk about "How large is a large dose. However, because it has no positive effect on health, our goal can be very clear: as low as possible.
To reduce the hazards of PBDEs, we must start from the source.
Pollutants like PBDEs should attract our attention and take positive measures to reduce their presence in the environment. The most fundamental way is to develop safer and more effective flame retardant to replace it. In fact, some types of PBDEs have been disabled in some countries and regions.
Before finding a better alternative, how to use it is actually a trade-off between "fire risk caused by not using it" and "environmental risk caused by it. As for how to use it, scientific evaluation and demonstration are required. A reasonable decision can be made without a pat on the head.
Because one of the major sources of PBDEs is garbage, especially electronic garbage. whether alternative products are found or not, there are a lot of things containing it. Standardized and scientific processing of such garbage can greatly reduce the chances of entering the environment and then polluting food.
How to view PBDEs in Food
Hong Kong has detected 71 foods containing PBDEs, which is similar to that in the United States. In general, the meat content is relatively high, each gram can reach more than 1 Nak, milk is slightly lower, and plants will be lower. The amount of salted eggs detected in Hong Kong exceeds 4 grams, which is indeed relatively high.
Many people will say, "The content in salted eggs is so high that they cannot be eaten in the future ". There is no food to eat, and there is nothing to do if you don't eat salted eggs. We need to understand that PBDEs in food are derived from environmental pollutants. Therefore, its content in food is closely related to the environment of animal and plant growth. It may be high in some areas, but it is low in some areas. In addition, in addition to salted eggs, other foods also contain, and the content is determined by the origin environment.
Don't worry too much about whether the salted eggs can be eaten. First of all, the pollution conditions in different regions are different, and the content in food is different. The detection results in Hong Kong can be referenced, but cannot represent the situation in other places. Second, the harm of harmful substances depends on the total amount of human intake. Considering that salted eggs are not the staple food, although the content is high, the total contribution is not necessarily more than other foods. Third, the current dangers of PBDEs are obtained from animals at a high dose, and it is unclear about the impact of these amounts in food on health.
However, it is not a good thing to avoid. There are two practical aspects to do: 1. Avoid eating food produced from places with severe industrial pollution and garbage pollution; 2. Because they are more likely to accumulate in fat, therefore, the amount of fat meat consumed is reduced.
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