內容目錄
Spring is here, with wild vegetables.
Every March and April, whether it is Chrysanthemum Brain Egg Soup in Nanjing, Caotou Circle in Shanghai, or Ningbo The Shepherd’s Purse Fried Rice Cake, and the Fragrant Dry Mixed Malan Tou, which is popular all over Jiangnan.
After the shock, Chinese toon, with its strong flavor, traveled from the Central Plains to North China, and traveled north and south with wild vegetables.
It is also because of the deliciousness of wild vegetables that many people bring a shovel for digging vegetables, a sharpening knife, a small spatula in the left hand, and a plastic bag in the right hand, and can’t wait to rush to every possible growth The “base” of wild vegetables.
What are the edible values of spring wild vegetables?
One. Dandelion
Dandelion is very rich in vitamin a, c, b1, b2 and b6, as well as folate, potassium, protein, pectin , choline and inulin and other nutrients.
These nutrients have a series of effects on human health, such as reducing swelling, dispelling knots, sterilizing, anti-inflammatory, and clearing heat.
Especially for some intestinal inflammatory infections caused by bacteria such as Escherichia coli and Staphylococcus aureus, it has a very good adjuvant treatment effect.
In addition, dandelion has a particularly good conditioning effect on bronchitis, pneumonia, breast hyperplasia, and thyroid nodules.
Second, Shepherd’s Purse
Shepherd’s purse is particularly rich in vitamin B, vitamin c, vitamin e, as well as carotene, dietary fiber, calcium, iron and protein< /strong>And other ingredients, these nutrients have a series of effects such as improving eyesight and spleen, hemostasis and diuresis.
Shepherd’s purse is also rich in dietary fiber, which can enhance intestinal peristalsis and promote human metabolism.
Especially for some people with intestinal diseases, hemorrhoids, high blood pressure, coronary heart disease, diabetes, etc., eating some shepherd’s purse properly can play a role in adjuvant treatment of the disease.
Third, Purslane
Portulaca oleracea has the functions of cooling blood to stop bleeding, clearing heat and detoxifying, sterilizing and anti-inflammatory, and lowering blood pressure, lowering blood sugar, reducing dampness and reducing swelling. series effect.
Portulaca oleracea is also known as a natural antibiotic for Staphylococcus aureus and Shigella, and Escherichia coli< /strong>And other bacteria, has a particularly strong inhibitory effect.
Four. Bracken
Bracken is a very common vegetable. It can be used in cold dishes or stir-frying. It can also be paired with meat to make some delicacies. The taste is very good.
And bracken is rich in nutrients such as vitamins, carbohydrates, organic acids, and protein.
These nutrients can clear heat and detoxify, reduce inflammation and sterilization, diuretic and stop diarrhea, clear intestines and detoxify, and also have the effect of lowering blood pressure.
In addition to these 4 kinds of wild vegetables, bitter herbs, water celery,Campanulaceae, small root garlic, Houttuynia cordata, plantain and other wild vegetables have good edible and medicinal value, and can be eaten according to their own physical constitution.
Wild vegetables are good, but the doctor advises you not to pick them indiscriminately
Many people pick wild vegetables not only to follow the delicious taste of spring, but also to think that they are natural, pollution-free, green and healthy.
But in fact, the truth is cruel.
According to a 2020 survey report on the heavy metal content of wild vegetables in Beijing: The heavy metal content of wild vegetables in Beijing parks, mountain forests, residential areas, and roads on both sides exceeds the standard, not only more than pollution-free The safe range of vegetables is more than the limit of food contaminants.
Perhaps you may not understand, these wild vegetables are all natural and wild, why do they exceed the standard?
You must know that the places where these wild vegetables live are not “wild”. For example, the greening of the parks often requires pesticides to kill insect pests and weeding.
In addition, these maintenances are not aimed at food, so the use of herbicides and pesticides is more casual, resulting in much higher residues.
And in the suburbs, let alone the suburbs, chemical factories and highways are basically in the suburbs. The waste water discharged from chemical factories, the exhaust gas from automobiles, etc., these pollutants will cause heavy metals in the soil to exceed the standard.
Therefore, these problems are not only invisible to the naked eye, but also not controlled by regulatory agencies, so the growing environment of this wild vegetable cannot be guaranteed.
What should I do if I really want to eat wild vegetables?
Don’t worry, we are Chinese people with a lot of vegetable growing skills, whether it is toon, shepherd’s purse, wolfberry head, malan head, etc., these are the same as other common vegetables, which require large-scale artificial planting method.
Therefore, I would like to remind you foodies that it is okay to go green in spring, but don’t pick wild vegetables indiscriminately!
References:
[1] Lou Yiyang, Lou Ge. (2020). Determination of heavy metals in common wild vegetables in Beijing area by inductively coupled plasma mass spectrometry (ICP-MS). Metrology and Testing Technology, 47( 7), 76-79. doi:10.15988/j.cnki.1004-6941.2020.7.026
[2] Ministry of Environmental Protection, Ministry of Land and Resources. (2014). National Soil Pollution Survey Bulletin.
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