Do not remove the strawberry stems when washing strawberries, rinse them with clean water, soak them in water, rice washing water, light salt water, and baking soda for 5 minutes before rinsing them.
Strawberries are a seasonal fruit in summer, and greenhouse technology allows us to eat strawberries in winter.
Strawberries are sweeter in winter because the lower the fructose temperature, the sweeter the taste.
Strawberries are low in calories and high in nutritional value, so you can eat them with confidence!
It's strawberry season again. A red strawberry in the mouth, the sweet and sour juice bursts between the lips and teeth, and the soft and tender flesh "melts" in the mouth, which is so intoxicating!But are the strawberries you eat really clean?
Be sure not to remove the strawberry stem when washing strawberries!
As for how to wash strawberries in the most "clean", there are really people who have studied. The most important action: do not pick the strawberry stems!
The researchers selected representative Shuofeng strawberries from supermarkets, fruit stores, and roadside fruit stalls with 3kg each, and divided them into 8 parts on average, and carried out the 8 cleaning methods in the figure below to compare the effects of different cleaning methods on pesticide residues in strawberry samples.
The results of the experiment showed that there was a significant difference between removing the strawberry stalk and not removing the strawberry stalk in removing pesticide residues, and the pesticide residues of the strawberries soaked after removing the strawberry stalk were relatively higher.
This is because if the stemmed strawberries are soaked in water, the residual pesticides will enter the fruit with the water, causing more serious pollution. In addition, the most recommended cleaning method is to rinse with water, then soak in clean water, rice washing water, light salt water, and baking soda for 5 minutes before rinsing.
Strawberries are actually summer fruits.
Strawberries belong to a type of berry that is juicy and sweet and sour. I remember eating strawberries only in summer when I was a child, and I rarely saw them in winter, but now I can eat strawberries even in winter. Some people may wonder, "What season is the strawberry fruit?"”
In fact, strawberries are the seasonal fruit of summer in nature. The optimum growing temperature is around 20 °C. In general, when the soil temperature is 15 23, it is suitable for the growth of strawberry rootsWhen the air temperature is 20 25, the strawberries photosynthesize best. Therefore, strawberries cultivated in the open field are generally planted in August and September, and picked in May and June of the following year, when the weather conditions are most suitable for strawberry growth.
Here's the thing: the strawberries are so delicious!It's really in short supply. In order to let everyone happily show off strawberries in winter, greenhouse strawberries came into being. At present, China's strawberry planting area and consumption rank first in the world, and almost more than 90% of strawberry planting is realized in greenhouses. Strawberries are cultivated in greenhouses, generally starting to prepare in June and August, planting around September, picking and marketing around New Year's Day, and harvesting for up to 3 months.
In winter, the temperature in the open air is low, which is not suitable for the growth of strawberries, and there is also a risk of freezing to death. Greenhouse planting can artificially control temperature and humidity, pollination and soil conditions to ensure the healthy growth of strawberries. So strawberries have changed from "summer fruits" to "winter fruits".
Someone said, "Isn't this an out-of-season fruit?"It's not good for the body!”
In fact, out-of-season fruits and vegetables are now common, so there is really no need to worry. Strawberries are still relatively picky about the requirements of the growing environment, and temperature, humidity, moisture, light, etc. will affect the photosynthesis of strawberries, and then affect the quality of strawberries. Strawberries grown in greenhouses can artificially control these conditions to ensure that the photosynthesis of strawberries can be carried out normally, and the flavor and quality are good. As for the plant growth regulator that everyone is worried about, there is no harm to the human body when used normally, and as long as it is cleaned, it can be eaten with confidence.
Strawberries are sweeter in winter, it's true!
There are also many friends who will find that strawberries in winter taste sweeter than those in summer, is this an illusion?Not really!
The sugars in strawberries include sucrose, glucose, and fructose, each containing 047g/100g、1.99/100g、2.44g 100g, of which the fructose content is the highest. Fructose has a characteristic that the lower the temperature, the sweeter the taste, so strawberries will indeed be sweeter in winter.
Strawberries are not only delicious, but also nutritious.
Vitamin CWhen it comes to eating fruits, everyone is most concerned about whether they can supplement vitamin C. The contribution of strawberries is quite large. According to the Chinese Food Composition Table, strawberries provide us with 47mg of vitamin C per 100 grams. However, vitamin C content varies from variety to variety.
Eating 100 200g of strawberries a day can basically meet the vitamin C needs of the general population.
Dietary fiber. Strawberries have an insoluble dietary fiber content of 11g 100g, the total dietary fiber content is 2g 100g, and there are slight differences among different varieties.
Mineral potassium. Strawberries are not as rich in potassium as bananas, but they are 1 of apples6 times 131mg 100g, which is beneficial for maintaining healthy blood pressure.
Antioxidants.
Strawberries have a higher content of bioactive substances, about 2 11 times more than common fruits such as apples, citrus, kiwifruit, etc. It contains bioactive components including total phenols, flavonoids, anthocyanins, etc., which have antioxidant and anti-inflammatory effects.
Low in calories. Strawberries are on the low side of the calorie range among fruits, only 32kcal 100g, which is lower than blueberries, mulberries, apples, pears, peaches, kiwi and other fruits. Even if you need to control your weight or are **, you can rest assured.
In addition, a recent study published in Nutrients mentioned that long-term consumption of strawberries in middle-aged people has the effect of reducing the risk of dementia, but the study used to supplement with 130g of strawberry powder per day.
Don't believe the rumors about strawberries!
Is the discoloration of strawberries dyeing?
Oh no!The skin of strawberries is thin and delicate, and a little violence when washing may break the tissue of strawberries, causing anthocyanins to escape, which is easily soluble in water, so the water will change color.
White strawberries are genetically modified
White strawberries are not genetically modified, but artificially bred varieties. At present, there are many varieties of white strawberries, such as Peach, Snow Angel, Xiaobai, Snow White, etc.
Hollow strawberries and deformed strawberries are hormones
Strawberry hollow has nothing to do with hormones, it has to do with the variety of strawberries, the growing environment, etc. For example, varieties such as Sweet Charlie have a low flesh density and are loose in the fruit, which may lead to hollowingExcessive use of nitrogen fertilizer during the fruiting phase can also lead to hollowing;Sufficient boron is required for internal transport in the fruit, and a lack of boron will also cause the fruit to appear hollow;Insufficient nutrients** or harvesting too late can also lead to hollowing.
In addition, the effect of clopyriurea on strawberry hollowness and malformation has been studied, and the results show that variety is the main factor leading to strawberry hollowing, and it is also a factor leading to strawberry malformation. Regardless of whether chlorpyramide is used in the cultivation of strawberries, the risk of hollow deformity increases as the individual strawberry grows.
Summary: Strawberries are very nutritious, and they are normally seasonal fruits in summer, but with the development of technology, growing strawberries in greenhouses can make us happy strawberries in winter!When washing strawberries, remember not to remove the strawberry stems
*From: Popular Science China.