Ministry of Agriculture experts refute rumors: Seedless grapes have nothing to do with contraceptives and can be eaten with confidence

Recently, a video of a suspected conversation between a fruit vendor and a fruit grower circulated on the Internet.
The two discussed how the seedless grapes are made and whether they can be eaten.
Once the video was released, many people were worried
.
To give you an accurate and authoritative statement, the reporter interviewed Nie Jiyun, director of the Fruit Research Institute of the Chinese Academy of Agricultural Sciences and the Fruit Quality and Safety Risk Assessment Laboratory (Xingcheng) of the Ministry of Agriculture
.
In this regard, Nie Jiyun said that the seedless grapes currently on the market have nothing to do with contraceptives.
Judging from the results of the risk assessment of grape quality and safety for many years, the quality and safety of grapes are guaranteed, and consumers can eat with confidence
.
Question 1: Where did the seedless grapes come from?According to Nie Jiyun, grapes can be divided into two categories according to the presence or absence of grape seeds, namely, seeded grapes and seedless grapes .
The so-called seeded grapes are naturally seeded grapes.
Seedless grapes can be divided into two situations: one is naturally seedless grapes, some varieties are parthenocarpy and therefore have no seeds.
The most common seedless white grapes used in sun-dried raisins This is the most typical example; the other is seedless cultivation achieved through modern agricultural technology.
Simply put, it is to apply a certain concentration of plant growth regulators during the flowering period of grapes to inhibit seed development and achieve the effect of seedlessness, like now The seedless Kyoho grape, which is very popular among the people, was cultivated in this way .
Question 2: What is the plant growth regulator used for grapes and is it safe?Plant growth regulators are a class of pesticides used to regulate plant growth and development.
The most commonly used type of plant growth regulator in grape seedless cultivation is gibberellin, which has been legally registered for use in grape production .
Later, researchers used fermentation or artificial synthesis for large-scale production for potato, tomato, fruit trees and other crops to promote growth, germination, and increase fruit setting rate .
Nie Jiyun said that the use of gibberellin for seedless grape cultivation is very safe for consumers.
One is because the concentration of gibberellin used in grape cultivation is extremely low.
If the concentration is high or the application amount is large, it will affect the plants.
The damage is not worth the loss .
In addition, it takes two to three months from the application of gibberellin to the harvest of grapes.
The gibberellin sprayed before is basically degraded..
According to the results of the Ministry of Agriculture's grape quality and safety risk assessment for many years, gibberellin is rarely detected in grapes, and the residual amount in the detected samples does not exceed 0.
1 mg/kg
.
Second, gibberellin itself is extremely low in toxicity.
According to the internationally accepted safety limit, an adult weighing 60 kilograms can only consume 180 mg of gibberellin per day to cause health hazards
.
Even if calculated at a high residue level of 0.
1mg/kg, it is obviously impossible for consumers to consume 180mg of gibberellin every day after eating 1800kg of grapes
.
Question 3: Can gibberellin make grapes seedless and cause infertility? 　　Nie Jiyun believes that this kind of inference is absurd.
Plant growth regulators are commonly known as "plant hormones", and contraceptives are animal hormones.
The two are completely different .
For "hormone" molecules to function, they must "recognize" specific proteins in cells and be able to bind to them .
The molecular structure of "plant hormone" is completely different from that of animal hormones.
The structure of plant cells and animal cells and the proteins they carry are also completely different.
It is like opening a lock with a key.
If the key does not match the structure of the lock, it cannot be unlocked .
By the same token, people can't make fruit seedless with contraceptives, and "plant hormones" can't regulate human growth and development .
　　Finally, Nie Jiyun emphasized that the use of plant growth regulators for seedless cultivation is a scientific agricultural production method.
The agricultural sector has strict regulations and strict supervision on the use of plant growth regulators.
You don’t have to listen to rumors and you can rest assured.
Buy seedless grapes .