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    Home > Food News > Food Articles > 20,000 kilos of grapes were destroyed, is it really a problem with cooking agents?

    20,000 kilos of grapes were destroyed, is it really a problem with cooking agents?

    • Last Update: 2020-09-28
    • Source: Internet
    • Author: User
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    Original title: 20,000 kilos of grapes were destroyed, is it really a problem caused by the cooker?
    recently, a "fruit farmers abuse of ripe agent" news attracted attention, the main content is Xi'anDistrict, the relevant departments of joint law enforcement, destroyed about 20,000 pounds of grapes using the ripe agent. Many friends looked at the title and pictures and thought the grapes had been destroyed simply because they had been cooked. But if you read the details of the news carefully, it is not difficult to find that these grapes are actually due to excessive use of ripe agents, affecting the quality of grapes, and local regulators fear that such grapes sold to affect local brands, only ordered to destroy. So, can the grapes use a ripe agent? Will there be security issues? Can you eat grapes with confidence?
    has been used as a ripe agent for more than half a century
    reported that some growers have used the ripe agent ethylene for the sake of the grape morning market. So, what exactly is vinyl? To say ethylene, you have to start with ethylene. Ethylene is one of the five plant hormones in the plant body, the plant will produce natural growth, it can regulate the growth of fruit, suggesting that the fruit should mature, the natural ripening of the fruit depends on it.
    the beginning of the last century, when ethylene was found to be able to cook fruit, it was used to help the fruit ripen with "coal stove gas" containing ethylene for easier treatment. However, ethylene is a gas that is not very convenient to use. So the scientists invented ethylene, which is a powder. Soak the fruit in a ethylene solution and it will be cooked. Therefore, agriculture generally uses its solution spraying, soaking fruit to speed up its maturation.
    most commonly used ripening agents, mainly those extremely difficult to preserve fruits for a long time, such as delicate temperate, subtropical fruits, if naturally matured and then harvested and transported, it is easy to spoil, but also difficult to transport. Therefore, it is usually picked when it is not ripe, and then treated with ethylene to allow the fruit to mature during transport and storage. It is with this treatment that we can eat grapes all over the world.
    , after ethylene treatment of grapes and other fruits, whether from nutrition or taste, it and naturally mature fruit is not much different, mature uniform, bright color, more selling phase. As a result, ethylene has been used as a good oxytolic agent since it was discovered in the 1960s.
    regular use of ethylene will not cause
    , then, ethylene is harmful to human health? First of all, high doses of ethylene are acutely toxic, but note that this refers to large doses. Ethylene is an organophosphorus compound whose acute symptoms of poisoning are similar to those of other organophosphorus pesticides, but it is less toxic. In two cases of acute ethylene poisoning that could be investigated, the two men ate 20g of ethylene powder directly and drank 250ml of ethylene on an empty stomach. With such a large dose, I don't think the average person can do such a thing, can they?
    , our standard stipulates that the amount of ethylene residue in grapes can not exceed 1 mg/kg. By this standard, the residual ethylene on various fruits and vegetables used regularly is unlikely to cause symptoms of acute poisoning.
    , there are many people worried about whether the remaining ethylene on the grapes will cause chronic poisoning? In fact, this will not happen. A report by the U.S. Environmental Protection Agency (EPA) found that the daily acceptable intake of ethylene in normal adults was 0.05 milligrams per kilogram of body weight. In other words, a 60-kilogram adult's daily intake of 3 milligrams of ethylene will do no harm to health. This is equivalent to 6 kg in line with the national regulations of the maximum amount of ethylene residue in grapes. Eat 6 pounds of grapes a day, I think the vast majority of people can not do. So don't worry about chronic harm.
    addition, ethylene can be easily dissolved into water, careful cleaning of fruit can also greatly reduce the residue on the surface of the fruit.
    really worried, buy home, more water rinse a few times can also be assured to eat.
    excessive use of vinyl can make fruit less
    Since ethylene is so safe to use in grapes, why destroy so many grapes? Is it because it's harmful? Not really. The use of plant hormones often has a strong self-limit, this self-limiting mainly comes from the constraints of quantity. Moderate use promotes growth, but excess is not conducive to fruit growth. Vinyl also has this problem. If used too much, the fruit will rot more easily because it matures too fast, and the taste quality will be worse.
    Study on the impact of different concentrations of ethylene treatment and fruit quality on Jufeng grapes, it was found that when the appropriate concentration of ethylene treatment can promote the early waiting period of grapes, at the same time, it is beneficial to improve the total sugar content of grape fruit, reduce the organic acid content, increase the glycate ratio, improve the vitamin C content.
    but the researchers also found that once overuse is not conducive to the growth of grapes, grapes will fall early fruit, grape taste will be worse. Therefore, subject to this factor, merchants will not add more. The main reason for the destruction of so many grapes is that these merchants blindly use and do not control the use of ethylene, resulting in premature fruit loss of grapes, and the taste of grapes is also poor.
    , even if such grapes are not destroyed, they will not sell well on the market, but will affect the reputation of local grapes.
    vinyl causes precociousness in children is a rumor
    there are rumors that hypnotic agents lead to sexual precociousness in children, which is a problem that many parents often worry about. In fact, ethylene can cook grapes, does not mean that it can also "cook" people.
    the essence of plant hormones is a pesticide, very low toxicity. Animal hormones, on the other 7th, are proteins in large molecules. In other words, plant hormones are completely different from animal hormones, and the molecular structure is very different, it does not make people precocious or infertile, just as pollen does not make people pregnant. Neither ethylene nor ethylene can exhibit sex hormone-like effects in the human body, nor can it participate in the synthesis of sex hormones.
    , ethylene use is nothing new in grape production, and safety is good. However, ethylene has a strong self-limiting, abuse is not conducive to the quality of the fruit. If it is to control product quality, destruction is normal, but if therefore ethylene is harmful, it is too wrong!
    Wen/Yu Guangfeng (Director, Science and Technology Department, Food and Nutrition Information Exchange Center)
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