Kiwi is a very nutritious fruit, and it is not only called"King of Chinese Fruits"., and it's also popular around the world.
Kiwifruit has a rich and colorful nutrient profile, containing a variety of healthy ingredients such as potassium, folic acid, and vitamin K in addition to vitamin C, fiber, and antioxidants.
Among them,Vitamin C is one of the most important components in kiwifruit, 100 grams of kiwiThe vitamin C content can reach about 120%.。These nutrients all have great benefits for human health.
For example, vitamin C can improve the body's immunity, promote iron absorption, prevent colds and certain cancers; Fiber can promote intestinal peristalsis and prevent constipation and other intestinal diseases.
It is this once highly sought-after fashion fruit, but in recent years, there have been some negative reports that have made it fall off the altar. Why is that?
Kiwi, also known as kiwifruit, is one of a kindThe fruit from China is considered one of the most important emerging fruits of the 20th century. Over the past few decades, kiwifruit has become one of the most popular fruits in the global market.
Historically, there have been some different theories about the origin of kiwifruit. According to the research of archaeologists,Kiwifruit may have originated in the mountainous areas of Yunnan, Sichuan, Guizhou and other regions of China, and was originally just a small wild fruit.
Later, people began to grow kiwifruit in these regions, and gradually it was introduced to other countries。In the 60s of the 20th century, kiwifruit first appeared in the New Zealand market, when it was called "Chinese gooseberry", and then it was renamed "kiwi".to better associate with this unique fruit.
There are also many descriptions of kiwi fruit in ancient Chinese culture. For example, inCompendium of Materia Medica, kiwi is described as:Fruit that "moistens the lungs and relieves cough, strengthens the spleen and eliminates appetite, quenches thirst and removes heat".
In addition, there are many depictions of kiwi in ancient literature, such as:"The branches are kiwifruit, and the bright color is like a sunset. Don't let the food know, only the fragrance does not ask the price. ”
Modern research has shown that kiwiRich in vitamin C, vitamin E and other important nutrients, it has a variety of effects such as antioxidant, lowering blood pressure, and improving gastrointestinal health. In addition, kiwifruit has good economic benefits and is a very promising fruit variety.
Today, kiwifruit is one of the most popular fruits in the world. According to the data,In 2019, the global production of kiwifruit exceeded 4 million tons, of which China is the main producer.
In addition to the common yellow-hearted kiwi and green-hearted kiwifruit, new varieties such as red-fleshed kiwi and golden-skinned kiwi have emerged. theseThe new varieties introduce more nutrients and changes in taste, increasing consumer choice.
It is not difficult to see that kiwifruit is very popular with everyone, so why has it been rejected by everyone in recent years?
Kiwifruit is a relatively delicate fruit, and it is easy to be affected by the outside world when ripe, resulting in a decrease in quality. As a result, merchants usuallyKiwifruit is picked before the fruit is fully ripe to reduce quality loss.
Because of kiwiDuring ripening, an enzyme called polyphenol oxidase is secreted, which accelerates the softening and aging of the fruit, resulting in a decrease in quality. Therefore, if you wait for the fruit to be fully ripe before picking, you are likely to miss the best time to pick, resulting in the fruit being overripe, too weak, or rotting.
Secondly, kiwifruit will begin to decompose on its own when it is ripeGases such as carbon dioxide and ethylene are produced, which accelerate the senescence and decay of fruits. If you wait for the fruit to be fully ripe before picking, these gases will be generated faster, resulting in a faster decline in the quality of the fruit.
As a result, merchants often pick kiwifruit before they are fully ripe to minimize the impact of these problems. If, thoughIf the harvest is too early, the inside of the fruit may not be fully developed and sweetness accumulates, resulting in poor taste.
Now there are merchants in order to earn higher profits,In order to seize market time and maintain the selling price, kiwifruit is picked too early。This behavior causes the kiwi to be picked before it is fully ripeThis further leads to a lack of sweetness and poor taste of the fruitIf not sold in time, the fruit will become weaker and weaker, and eventually rot and deteriorate, so they can only sell it on the scalp.
It also exists, the kiwi fruit was originally ripe when it was put away, but now it is a phenomenon that it is rotten when it is released.
Secondly, there are some merchantsIn order to maintain the freshness of kiwifruit, methods such as chemicals are used to preserve its freshness. Although these agents can prolong the shelf life of the fruit, it will also affect the taste and nutritional content of the fruit, bringing a bad eating experience to consumers. Among them,Commonly used chemicals include ethephon and copper sulfate
Ethephon is onePlant hormones that promote fruit ripening and agingIt can promote the ripening and discoloration of the fruit, as well as improve the sweetness and flavor of the fruit. However, if used incorrectly, ethephon mayIt can lead to thinning, softening, poor taste and potential harm to human health.
Copper sulphate isA fungicide and preservative that inhibits fruit rot and mold growth, thereby prolonging the shelf life of the fruit. However, copper sulphate also has significant safety implications. Excessive use of copper sulphate is possibleIt can lead to adverse effects on human health in the fruit.
There are also merchants who make kiwi look bigger and better, sometimesBulking agents are used to increase the size and weight of the fruit。Bulking agents are mainly some nitrogenous compounds like urea, ammonium nitrate, etc., which allow the fruit to absorb water and swell, thus making the fruit appear larger.
However, bulking agents pose certain risks to human health. First of all, puffingBulging agents can contaminate the fruit and cause poisoning of agricultural products. Secondly,Some bulking agents contain toxic substances, such as nitrites.
In general,The kiwifruit market is now moving towards the direction of "bad fruits", which has a lot to do with merchantsIn order to pursue higher profits, some businesses do not take into account factors such as the growth environment, picking methods, and storage conditions of kiwifruit.
To solve this problem, it is still necessary to raise the awareness of merchants and make them realize the importance of sustainable development, yesImprove the efficiency and quality of agricultural production by strengthening technical support and training farmersAt the same time, it can also strengthen the brand building of kiwifruit, enhance the brand value, so that merchants have more motivation to pay attention to product quality and consumer experience.
In terms of planting,Ecological planting methods can be adopted to reduce the use of chemical pesticides and be green and environmentally friendly；In terms of picking, yesThe introduction of mechanized and automated picking technology to improve picking efficiency and reduce labor losses；In terms of storage, yesControl environmental factors such as temperature and humidity to prolong the shelf life of kiwifruit.
In this way, we can redeem the title of "King of Chinese Fruits" among consumers.