There have always been some opinions that freshly squeezed juice is not healthy at all and it is very easy to get fat. The general view on the Internet is that the sugar content of fruit juice will become higher and the nutrients such as vitamins will be destroyed. Therefore, freshly squeezed juice is not healthy at all, and drinking too much freshly squeezed juice has become the chief culprit of our daily obesity.
So what is the truth?
The answer is yes. After the fruit is squeezed, its own vitamins and other nutrients will be lost to varying degrees. Some experts have done such experiments. The loss of vitamin C in fruits and vegetables after juicing was measured. The fruits and vegetables selected in the experiment include cucumber, pear, carrot and watermelon.
The experimental results showed that vitamin C in fruit and vegetable juice was lost to varying degrees, and the most serious loss even exceeded 90%. This experimental result makes people feel a little incredible. Is there such a serious loss of nutrients in fruit after juicing?
The loss of vitamin C in fruits is mainly due to oxidation reaction. The scientific name of vitamin C is ascorbic acid, which has antioxidant effect. When fruits and vegetables are squeezed into juice, the cells in vegetables are destroyed, and vitamin C will be exposed to air for oxidation. In this way, the content of vitamin C will also be lost.
The loss of vitamin C is different after different fruits are juiced. The content of vitamin C in cucumber, pear and carrot is less than 1 mg per 100 g, while the content of vitamin C in watermelon juice is less than 20%. This is because watermelon is acidic and is not easily oxidized compared with the first three fruits and vegetables.
In addition, in the process of juicing, high-speed rotating leaves destroy cells, and antioxidant components such as flavonoids and anthocyanins will also be lost to varying degrees. Insoluble fibers and trace elements such as calcium will also remain in the slag.
Therefore, freshly squeezed juice can't supplement a lot of nutrition as everyone thinks. Juiced fruit is actually not as healthy as eating fruits and vegetables directly.
So, if you really like to drink freshly squeezed juice, how can you squeeze juice to reduce nutrient loss?
As long as the fruits and vegetables are slightly scalded with boiling water first, the oxidase can be "killed". In this way, the organization of fruits and vegetables can be slightly smaller, which is convenient for juicing. Not only will the loss of vitamins become smaller, but the juice yield will also increase, and the juice is bright in color and not easy to change color. Especially those vegetables without sour taste, such as carrots, vegetables, celery, fresh sweet corn and so on. It's best to blanch them before juicing.
In fact, it is not easy to directly define whether the sugar content of fruit juice will increase. Strictly speaking, after the fruit is squeezed into juice, the sugar will not become high. The law of conservation of matter tells us that no matter what changes or processes take place, its total mass remains unchanged. Therefore, the same fruit, with the same sugar content as the original, will not become less or more because it is squeezed into juice.
But from another perspective, the sugar content of fruit juice seems to be really high again. For example, if an apple contains 30g sugar, then squeeze it into juice, and this cup of juice also contains 30g sugar. The key problem is that a glass of juice often needs a lot of juice, which involves the problem of quantity. An apple has a low sugar content, but a glass of apple juice has a high sugar content. So it makes sense to say that the sugar content of freshly squeezed juice is higher, because drinking juice is equivalent to eating more fruit, so you consume more sugar.
For me who yearn for a fat house life, I will definitely give an affirmative answer to such a question without hesitation. After all, if you really like people who drink juice, it doesn't matter if you have more so-called nutrition. I think many people like the taste and taste of fruit, and health preservation is only a side benefit.
However, if you are obese or want to lose weight, be careful. Try to eat fruit at ordinary times. If you are greedy, you can squeeze juice properly. The key is to grasp the quantity and drink moderately.
Finally, I really want to remind everyone that if you really just want to drink freshly squeezed juice, you'd better juice yourself at home. It is strongly recommended that you drink the juice outside. The key point is that many merchants often add a lot of sugar and additives to the juice in order to improve the taste and taste. And those things are the culprit that harms our health and leads to obesity.