Calcium carbonate has the highest absorption rate in calcium and it is used more by adults. However, there is a process in which the body absorbs calcium. Under the action of stomach acid, part of the calcium carbonate will become Calcium Chloride. After entering the intestinal tract, calcium phosphate will be formed. These calcium salts are difficult to absorb and inhibit intestinal peristalsis, which may cause constipation. . This is especially true for elderly people or people who lack dietary fiber in their diets. It is recommended to drink yogurt when calcium is added. It contains Lactic Acid and calcium, which can promote calcium absorption. Yogurt also contains a large number of active lactic acid bacteria that can promote gastrointestinal motility and relieve constipation. Second, we must increase the intake of crude fiber, but also encourage the elderly to drink plenty of water, more walking, more exercise, which is beneficial to the prevention of constipation. Another thing to note is that eating more calcium tablets can also cause constipation. Generally, it should not exceed 500 mg per serving.
Adipic acid is mainly used in producing nylon fiber and engineering plastics, and polyurethane in quantity. Most of parts are used to produce PU, liquid for sole, polyurethane foam, etc. A small number of them are used for high quality lubricating oil.
High quality ester of adipic acid can be used as PVC and its copolymer, plasticizer of natural synthetic rubber. A large number of adipic acid ester is used to produce food packaging, thin film and PVC for insulation.
Adipic acid is also used for sour agent of food and drink. It is not easy to deliquesce, so it is used in dry food, and can be kept in a long time.
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