Precautions for pregnant women to eat fruit
The fruit is good, thirsty and rich in vitamins and water. Despite the benefits of fruits, it is by no means acceptable to all pregnant women. For pregnant women of different physiques, the corresponding taboo fruits are different. Want to know what kind of fruit you are not suitable for? Then check it out!
Hot pregnant women should not eat hot fruits
After women become pregnant, the prevailing physical condition tends to be hot, and the negative blood is relatively reduced. At this point, some hot fruits such as litchi, longan, etc. should be eaten in moderation, otherwise it is prone to constipation, tongue sores and other "fire" symptoms, especially pregnant women with threatened abortion should be more cautious, because the hot fruit is more likely to cause fetal movement disturbed.
The stomach cold body should not eat with papaya
The papaya tastes sweet and delicious, rich in vitamins and estrogens, and has the reputation of being the fruit of the hundred percent fruit and the imperial fruit. For the general public, papaya can eliminate food, deworm, clear heat and detoxify. It can also be used to help treat stomach pain, stomach heat, cough in the lungs, milk failure, eczema, parasites, and pain in the hands and feet. Although papaya has so many benefits, but papaya is cold, so Wei Han, physical deficiency should not eat, or easy to diarrhea or Wei Han. Pregnant women are not allowed to eat too cold food. And modern medical research found that papaya contains papaya has an effect of increasing uterine contraction, even if the papaya is cooked, it can not destroy the papaya. Therefore, it is best for pregnant women not to eat papaya, neither raw nor cooked.
Deficiency of stomach and diarrhea pregnant women should not eat cold fruit
If you have symptoms of loose stools, cold fruits such as pears, watermelons, papaya, bananas, and grapefruit are temporarily unfit for human consumption. Occasional eating of hot fruits such as lychee and durian occasionally improves the symptoms.
Constipated pregnant women should not eat durian
Can be eaten in small quantities. Durian contains higher calories and sugars, and 500 grams contains 500 kcal calories. If mothers often use durian as a tonic, causing their blood sugar to rise, the baby will be overweight, which will increase the chance of a huge fetus in the future. . Second, although durian is rich in cellulose, it will swell in the stomach and intestines. Excessive consumption will instead block the intestines and cause constipation.
People with gestational diabetes should not eat watermelon
The sugar content of watermelon is 10%. Due to the change of female hormones during pregnancy, the body's ability to control blood sugar is reduced, resulting in high concentration of sugar in the blood, and gestational diabetes can occur. Gestational diabetes is a cause of pregnant women's miscarriage and premature delivery. important reason. Therefore, pregnant women cannot overeat watermelon.
In addition to watermelons, pineapple, bananas, durian, grapes and other fruits are relatively high in sugar content, and pregnant women with gestational diabetes should eat less. Pregnant women should eat small amounts or do not eat hawthorn, although there are blood circulation, but there is a certain contraction of the uterus, in early pregnancy should pay attention to a small amount of food, pregnant women with abortion, or signs of miscarriage pregnant women should avoid eating, even if Hawthorn products are no exception.
Allergies and hot and humid constitutions of pregnant women should not eat mango
Mango has the effect of antiemetic and can relieve nausea and vomiting in early pregnancy. In addition, mango contains a lot of fiber, can promote intestinal peristalsis, will help the smooth flow of defecation. Therefore, mango has a preventive effect on constipation during pregnancy, so pregnant women can eat mango. However, it should be noted that the nature of mango is wet, and if pregnant women themselves suffer from skin diseases such as eczema, sores, tumors, gynecological diseases such as leucorrhea, they should avoid eating.
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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