Soymilk is a kind of drink that the Chinese people love. It is also a kind of nutritious food for all ages. It enjoys the reputation of “plant milk†in Europe and America. Soymilk is rich in vegetable proteins and phospholipids, and also contains vitamin B1.B2 and niacin. In addition, soy milk also contains iron, calcium and other minerals, especially the calcium it contains, is very suitable for all kinds of people, including the elderly, adults, adolescents, children and so on.
Soymilk is rich in nutrients and health care value. It is rich in protein and dozens of minerals such as calcium, phosphorus, iron and zinc, as well as vitamins such as vitamin A and vitamin B. Soymilk has a higher protein content than milk, and soy milk also contains special health factors such as soya saponin, isoflavones, and lecithin, which are anti-cancer and brain-enhancing.
Soy milk is particularly suitable for office crowds
The vitamin B contained in soy milk is the best decompression agent. When the body is under pressure, it takes more vitamin B than usual. So drinking a cup of soy milk every day helps relieve stress. Soy isoflavones and other active ingredients in soybeans are also beneficial in preventing osteoporosis and can alleviate the calcium loss problems that occur in middle-aged people.
Because soy isoflavones are considered "phytoestrogens", can men not drink milk?
Although soy isoflavones have weak estrogenic activity, this activity is only one-thousandth of that of estrogens. For males with high levels of androgen, a plant hormone in a cup of soy milk cannot reverse hormone balance.
What are the benefits of drinking soy milk in autumn
For "three high" people, soymilk is a very suitable drink. Original soymilk has the characteristics of low-heat, low-sugar, low-fat, and zero-cholesterol. It also contains unsaturated fatty acids and phytosterols. Long-term consumption of soymilk can reduce cholesterol absorption, and it has a certain effect on high blood lipids, hypertension, arteriosclerosis, coronary heart disease, diabetes, etc. It helps to reduce the risk of cardiovascular disease. It is recommended to drink a cup of concentrated soybean milk every day.
Experts pointed out that friends suffering from the following diseases do not enjoy the taste of soy milk or bean curd. Acute gastritis and chronic superficial gastritis should not use soy products so as to avoid stimulating excessive gastric acid secretion and aggravating the condition or causing flatulence.
1. Soymilk nature is cold, indigestion, belching and poor kidney function, it is best to drink less milk. In addition, soy milk can produce gas under the action of enzymes, so people with abdominal distension and diarrhea should not drink soy milk.
2. Can not add brown sugar in soymilk, because there are many kinds of organic acids in brown sugar, and they are combined with protease in soymilk, and it is easy to denature and precipitate proteins, which are not easily absorbed by the body. Sugar does not have this phenomenon.
3. Some people like to use warm bottled milk to incubate, this method is not enough, because the warm and humid environment of the thermos flask is very conducive to bacterial growth. In addition, the soap toxins in soymilk can also dissolve the scale in the thermos bottle, and drinking can harm human health.
4. Since soymilk is made from soybeans, and soybeans contain high purine components and are cold foods, dwarf physique with symptoms of gout, fatigue, physical weakness, and mental fatigue are not suitable for drinking milk. .
5. Soymilk must not only be boiled, but also must open the lid when boiled soy milk, this is because only open the lid can let the harmful substances in the milk evaporated with water vapor.
Preparation of Fenebute
1. Prepare the first intermediate
Benzaldehyde and ethyl acetoacetate into ethanol, stir at room temperature under the catalysis of organic alkali reaction with filter cake filtration after 45 ~ 50 h, after the completion of the filter with ethanol elution filter cake, dry cake solids, then ethanol filtrate concentrated to a quarter of the original volume, to cold, concentrate filtering alcohol washing, solid, merging two solid is the first intermediate; The mole ratio of benzaldehyde, ethyl acetoacetate and ethanol is 1:2.5 -3:12-15.
2. Prepare the second intermediate
The first intermediate is added to the mass concentration of 20% sodium hydroxide solution, and the reaction is stirred at 85-90°C for 2-5 hours. After filtration, the filter cake is used for filtration. After filtration, the filter cake is washed, the filtrate is combined and cooled, and the filtrate is cooled by stirring for 3h. Solid second intermediate; The mass ratio of the first intermediate to the sodium hydroxide solution is I: 1.8-2.0;
3. Prepare the third intermediate
The second intermediate was dissolved in pure acetic anhydride solution for reflux 3 ~ 5h. After the reflux, the acetic anhydride was concentrated and dissolved with toluene. After the dissolution, ammonia water was added, and the reaction took place at 60_65°C for 1 ~ 1.5 h. Filtrate, wash and dry the precipitated solid to get the solid third intermediate; The mass ratio of the second intermediate, pure acetic anhydride solution, toluene and ammonia water is 5:1-1.2:0.5-0.8:0.5-0.8;
4. Prepare Finebute
The third intermediate was dissolved in 25% sodium hydroxide solution and cooled to _5°C ~ 10°C. After cooling, sodium hypochlorite was added slowly within 15-20min for 1h reaction, followed by ice bath reaction of 0.5 ~ 1.5 h and water bath reaction of 0.5 ~ 1.5 h. Finally, the temperature was gradually increased to 60 ~ 80°C for 1-5 h, and the reaction was cooled again after completion. After cooling, hydrochloric acid was added in the ice water bath to adjust the PH to 2, and the decolorization was stirred at room temperature. After filtration, sodium hydroxide was added in the ice water bath to adjust the PH to 6-7, and the cooling was stirred for 2 hours. The mass ratio of the third intermediate, sodium hydroxide solution and sodium hypochlorite is 1.0:0.8-1.0:1.0-1.1.
Preparation of Fenebute
1. Prepare the first intermediate
Benzaldehyde and ethyl acetoacetate into ethanol, stir at room temperature under the catalysis of organic alkali reaction with filter cake filtration after 45 ~ 50 h, after the completion of the filter with ethanol elution filter cake, dry cake solids, then ethanol filtrate concentrated to a quarter of the original volume, to cold, concentrate filtering alcohol washing, solid, merging two solid is the first intermediate; The mole ratio of benzaldehyde, ethyl acetoacetate and ethanol is 1:2.5 -3:12-15.
2. Prepare the second intermediate
The first intermediate is added to the mass concentration of 20% sodium hydroxide solution, and the reaction is stirred at 85-90°C for 2-5 hours. After filtration, the filter cake is used for filtration. After filtration, the filter cake is washed, the filtrate is combined and cooled, and the filtrate is cooled by stirring for 3h. Solid second intermediate; The mass ratio of the first intermediate to the sodium hydroxide solution is I: 1.8-2.0;
3. Prepare the third intermediate
The second intermediate was dissolved in pure acetic anhydride solution for reflux 3 ~ 5h. After the reflux, the acetic anhydride was concentrated and dissolved with toluene. After the dissolution, ammonia water was added, and the reaction took place at 60_65°C for 1 ~ 1.5 h. Filtrate, wash and dry the precipitated solid to get the solid third intermediate; The mass ratio of the second intermediate, pure acetic anhydride solution, toluene and ammonia water is 5:1-1.2:0.5-0.8:0.5-0.8;
4. Prepare Finebute
The third intermediate was dissolved in 25% sodium hydroxide solution and cooled to _5°C ~ 10°C. After cooling, sodium hypochlorite was added slowly within 15-20min for 1h reaction, followed by ice bath reaction of 0.5 ~ 1.5 h and water bath reaction of 0.5 ~ 1.5 h. Finally, the temperature was gradually increased to 60 ~ 80°C for 1-5 h, and the reaction was cooled again after completion. After cooling, hydrochloric acid was added in the ice water bath to adjust the PH to 2, and the decolorization was stirred at room temperature. After filtration, sodium hydroxide was added in the ice water bath to adjust the PH to 6-7, and the cooling was stirred for 2 hours. The mass ratio of the third intermediate, sodium hydroxide solution and sodium hypochlorite is 1.0:0.8-1.0:1.0-1.1.
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