Today is the first day of Uncle Zhang's retirement, and Uncle Zhang feels refreshed without going to work. In the past, all the housework at home was cooked by my wife, Aunt Zhang.
Now that he has a lot of time to retire, Uncle Zhang is ready to cook a hearty lunch for Aunt Zhang.
Uncle Zhang, who had never bought vegetables alone, refused Aunt Zhang's request to accompany him, and insisted on letting Aunt Zhang wait at home
He said that he had to do everything himself today, and Aunt Zhang only needed to be responsible for eating.
After Uncle Zhang came to the vegetable market, he was dazzled by the dazzling array of melons, fruits and vegetables.
It doesn't matter if you're not skilled in business, Uncle Zhang has his own tricks, just pick the ones that look beautiful and clean when buying vegetables.
When he got home, Uncle Zhang put the dishes he bought back on the kitchen table one by one. Aunt Zhang was suddenly attracted by the white glowing yuba.
"There's something wrong with the yuba you bought! The normal yuba isn't the same color at all, and it doesn't feel so hard to the touch. Aunt Zhang said with a yuba in her hand.
"Impossible! This is the whitest and cleanest yuba I specially picked out!" Uncle Zhang retorted with a straight face.
Aunt Zhang smiled after hearing this, and she told Uncle Zhang that it was because the yuba was too white that she could find out that there was a problem with the yuba at a glance.
Aunt Zhang also told Uncle Zhang that this kind of yuba with abnormal color is all yuba that has been treated with formaldehyde by black-hearted traders.
This kind of yuba is not only poisonous, but even has a risk of causing cancer! By the way, he also taught Uncle Zhang 5 tips on how to distinguish inferior yuba.
1. Common yuba
As one of the most common ingredients in life, yuba has a unique bean flavor and is rich in protein and other nutrients.
It has the advantages of high nutritional value and can be eaten with a variety of ingredients, and is liked by many families.
After soaking the yuba in water, it can be eaten directly, which can be used for cooking, soup, and cold dressing, with countless methods and delicious taste.
However, it should be noted that gout patients and people with renal insufficiency are not recommended to eat yuba.
Second, black-hearted merchants make yuba
The method of yuba is slightly more complicated, you need to boil the soy milk, and then let it cool naturally, pick the film formed on the surface of the soy milk, and make it naturally droop into branches.
In the air drying, drying, cutting and other treatments, we can get our common yuba finished products.
As a result, the production time of yuba is long, and the process is complicated, and the shelf life of the yuba produced is short, and the cost of yuba has also risen.
Some black-hearted merchants, in order to reduce costs as much as possible, naturally began to come up with tricks.
In order to prolong the shelf life, normal formaldehyde will add some edible preservatives in an appropriate amount.
However, this kind of preservatives are more expensive than formaldehyde.
Therefore, black-hearted merchants will use formaldehyde instead of preservatives to add to yuba.
When we buy something, we will subconsciously buy better products, so in the purchase of ingredients, we will naturally tend to buy more beautiful.
Black-hearted merchants grasped these psychology of us, and began to add formaldehyde to yuba.
To make the yuba look fresher, the color is brighter and shinier. Usually black-hearted merchants will secretly add formaldehyde or some substances containing formaldehyde to the yuba.
Formaldehyde-added yuba is bright in color, has no fibrous tissue, and after blistering, the water will become yellow and turbid.
3. The harm of adding formaldehyde to yuba
The formaldehyde added to yuba is a colorless gas with a pungent odor, especially irritating to people's eyes and nose.
Formaldehyde can play a great role in the industrial field, wood industry, textile industry, and even medical field through a series of chemical reactions.
Although formaldehyde is widely used, it cannot be used in the food field.
Because formaldehyde is not only a toxic substance, but also a carcinogenic substance, formaldehyde mainly has an irritating effect on the skin and mucous membranes of the body.
1. Cause poisoning
In an environment with high concentrations of formaldehyde, it is easy to have symptoms such as throat discomfort, redness, swelling and itchiness, hoarseness, chest tightness, wheezing, and sneezing.
This is especially true in newly renovated rooms, where this is most likely to occur.
When the concentration of formaldehyde is too high, it can even lead to acute poisoning, such as a burning sensation in the throat, sudden difficulty breathing, atopic dermatitis on the skin, increased jaundice, bronchitis and other diseases.
Always staying in an environment with formaldehyde can also cause symptoms such as decreased appetite, weakness, headaches, insomnia, vision loss, and finger tremors.
Long-term inhalation of formaldehyde will cause damage to the respiratory system and liver cells, resulting in a decrease in immunity.
2. Carcinogenic
Studies have found that long-term exposure to formaldehyde will greatly increase the risk of cancer.
People who are exposed to formaldehyde for a long time are prone to multiple myeloma, myeloid leukemia, nasal cancer, nasopharyngeal cancer, etc.
The most common early symptoms of nasal cancer are nasal congestion, nasal bleeding, swollen lymph nodes in the neck, and the appearance of pus, blood, and discharge.
Generally, nasopharyngeal carcinoma has a long incubation period, and if it is found, it is necessary to go to the hospital for treatment immediately.
At present, the most common treatment methods for nasopharyngeal cancer are mainly traditional Chinese medicine treatment, surgical treatment, radiation therapy, chemotherapy and immunotherapy.
A variety of treatment methods must be determined mainly according to the patient's own condition.
Leukemia, which we most often hear about in our lives, belongs to a malignant neoplastic disease of the hematopoietic system.
Leukemia is divided into acute and chronic, and the symptoms of these two diseases are not the same.
Acute leukemia usually presents with sudden fever, severe anemia, bleeding throughout the body, swollen lymph nodes and other symptoms.
Chronic leukemia is characterized by fatigue, night sweats, weight loss, enlarged spleen, bloodshot eyes, and decreased appetite.
Leukemia can be treated with a variety of methods such as drug therapy, surgical treatment, radiotherapy, chemotherapy, etc.
The doctor will give a reasonable treatment method based on the patient's condition, physical condition and other factors.
3. 5 tips for identifying inferior yuba
In order to prevent the purchase of toxic and harmful yuba by mistake, there are 5 practical tips that can be taught to you, hoping to help you play a useful role when buying yuba.
1. Look at the color
The normal color of yuba is golden yellow, or pale yellow, slightly shiny, soft to the touch, brittle texture and easy to break, after the yuba is broken, it is usually in a hollow state.
Yuba with formaldehyde and other substances added to it is whitish or even shiny in color.
Not only that, because of the production process of yuba, the yuba has a lot of moisture when it is made, so the yuba is not easy to preserve and is easy to mold and deteriorate.
Therefore, if you find those yuba with black spots or mildew, you need to pay attention to it and don't buy it.
2. Look at the texture
Yuba is soft to the touch, but the texture is brittle and dry, normal yuba is easy to break, and will fall off fragments, yuba is easy to be soaked and boiled when eaten.
The yuba with added formaldehyde is very tough, will not be easily broken, and is not easy to soak or boil.
3. Smell the smell
Yuba is made from the floating skin of soy milk, so it will have a strong bean aroma. The yuba that has been specially "treated" with formaldehyde will have some pungent odors.
When yuba is soaked in boiling water, the pungent smell will be even stronger. Some moldy and spoiled yuba will also have a sour smell and musty smell.
4. Look at the water quality after soaking
After the normal yuba is soaked in water, it will show a full state, and the water soaked in the yuba is still clear and clean.
Those yuba treated with formaldehyde, after being blistered, not only did not become full, but the color became dull.
The water that has been soaked in yuba is not clear, but yellow and turbid. By looking at the state of the water quality, you can easily distinguish between normal yuba and problematic yuba.
5. Look at the packaging
The bean curd produced by regular manufacturers can clearly see the manufacturer, production date, shelf life, and main ingredient list on the packaging.
Through this information, you can easily see the relevant information of yuba, and easily distinguish the quality of yuba.
When buying yuba, try to choose yuba that does not have illegal additives on the ingredient list. It is recommended not to buy yuba that is sold in bulk or has unclear information on the packaging.
4. How to buy healthy food
Food is the main source of energy for the body, so you must pay more attention when choosing. In order to be able to buy healthy food, here are a few tips for you.
If you want to buy fruits and vegetables that are fresh and affordable, you can go to the local farmers' market. Not only is there a wide variety of fruits and vegetables, but the quality and prices are also very satisfying. When buying, it is recommended to buy fruits and vegetables that are in season.
Fresh fruits and vegetables are rich in various vitamins and minerals that provide nutrients to the body.
Some fruits and vegetables also have antioxidant properties, which can help the skin to be more elastic and youthful, while strengthening the body's immunity.
When buying food, try not to buy or buy less of those pickled foods that have been processed, such as smoked sausages, sausages, various canned foods, pickled vegetables, etc.
This kind of processed food mostly contains food additives, and eating it regularly is not good for health.
There are also those foods that are high in sugar, salt, and oil, and try not to eat them if you can.
When high-oil foods are cooked at high temperatures with hot oil, they not only lose their original nutrients, but also produce trans fatty acids that are not good for health.
The same is true for high-sugar and high-salt foods, which can lead to the risk of blood vessel blockage and exacerbate the risk of cardiovascular and cerebrovascular diseases.
From the packaging bag of the food, you can easily view some basic information of the food. From this information, the quality of the food can be quickly determined.
It is easy to see whether the food meets the consumption standards and whether it has exceeded the expiration date.
summary
Friends who love to eat yuba should pay attention, you must take a look at it when buying yuba.
Whether the color is golden, the texture is crisp, there is no other pungent smell, the water quality is clear after soaking, and the information on the package is complete, and then make a purchase.
Treated yuba is harmful to health, may cause poisoning, and even has a risk of causing cancer, so you must pay more attention when buying.
It is recommended to eat more fresh food to keep your body healthier!