The baby's healthy diet is one thing that mom and dad attaches great importance to. It is known that when the baby develops to a certain time, it is able to add supplementary foods. There are a lot of families who are also very concerned about the baby's Food Supplement, but it is important to add complementary food to the baby. Many things, then tell us about what you should pay attention to about the newborn's diet.
One, avoid hard, thick, raw
The chew and digestive function of infants and young children is not yet well-developed, and digestion is relatively slow. Therefore, the complementary food or diet provided should be soft, fine, and cooked, and the vegetables can be boiled badly, cut into pureed vegetables and let the baby eat.
Second, avoid chewing feeding
When some moms and dads feed their babies, they always like to chew food in their mouths and then eat them again. Mom and dad are afraid that their children will not chew. However, in fact, it is not conducive to the maturation of infants and young children.
Mom and Dad are best able to look at what their children eat according to their age characteristics and digestive level. They are fine, soft, and rotten when cooking. Babies do not have good teeth and have poor chewing ability, but children can also eat. . Chewing feeding is an unsanitary habit. It can infect the baby with bacteria and viruses in the mouth of the mother and father, which is very likely to make the baby sick.
Third, avoid diet monotonous
Infants and young children are likely to be bored with the same food. Therefore, if you want your baby not to picky eaters and eat well, you must ensure adequate and reasonable nutrition. It is best to provide children with foods that are rich in variety, color, aroma, and taste. Alternating the thickness of the staple foods and supplementing the food ingredients can also give the children some snacks. In this way, children can not be picky eaters, but they can also balance their meals.
Fourth, avoid blindly eating fortified food
Foods sold in large supermarkets have a lot of foods that have been fortified. If you buy it directly for your child, there is a danger of poisoning. Be sure to check the nutrient content indicated on the food packaging before buying. It is best to be able to ask the doctor or some expert.
Fifth, avoid strong fill hard plug
Infants and young children under normal circumstances know hunger and fullness, if the baby does not eat, then you can not force her. There is a saying in China that raising children should be “three points of hunger and three points of cold†so that children can grow up healthily. Mom and Dad must look at the child's situation, do not force the child to eat, or the child is easy to fight with Mom and Dad, too strong and easy to make children have indigestion.
The above are some things to pay attention to in the newborn diet, and now should be aware of it, for the baby's healthy diet can not be ignored, the mother to the baby to add a complementary food to know a lot of things.
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Methylamine hydrochloride is used to make medicines, dyes, etc. Examples of its application are as follows:
1) A method for preparing 3-methylamino-1-(2-thienyl)-1-propanol using 2-acetylthiophene, paraformaldehyde and monomethylamine hydrochloride. The method provided by the invention is to directly convert the dimer into 3-methylamino-1-(2-thienyl)-1-acetone hydrochloride and dimer without separating the mixture. After methylamino-1-(2-thienyl)-1-propanone hydrochloride, it was reduced to the target compound 3-methylamino-1-(2-thienyl)-1-propanol. The method has the characteristics of simple operation, easy control, high yield and low cost.
2) Preparation of a kind of solvent blue 78, the steps of which are: using methanol aqueous solution as a reaction solvent, using fatty alcohol polyoxyethylene ether as a dispersant, using 1,4-dihydroxyanthraquinone and monomethylamine hydrochloride as main raw materials, Using 1,4-dihydroxyanthraquinone leuco as an initiator or catalyst, the target product Solvent Blue 78 is obtained through closed-tank condensation reaction. The present invention replaces volatile liquid monomethylamine with monomethylamine hydrochloride, and does not produce high-concentration nitrogen-containing wastewater; the aromatic amination of 1,4-dihydroxyanthraquinone according to the present invention adopts peregal 0 as a dispersant, and 1 , 4-dihydroxyanthraquinone leuco is used as a catalyst, and the product yield is raised from the traditional 70% to more than 91%.
3) Prepare an isotope-labeled swiftcarb-D3, add the aqueous solution of monomethylamine hydrochloride-D3 dropwise to the dimethyl dithiocarboxylate solution, and obtain the intermediate S-methyl-N-methyl after the reaction Dimethyl carboxylate, the above intermediate is slowly passed into Cl2 at low temperature, and acid binding agent and m-cresol are added successively to prepare the labeled substance Sulfacarb-D3. Compared with the prior art, the invention has the advantages of simple process of labeling deuterated isotope, high yield, and undiluted isotope abundance, and is suitable for laboratory production of fast-carb-D3.
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