Tropical fruits in the refrigerator

Assorted tropical fruits such as longans, rambutan, etc., once these fruits are bought and returned to the refrigerator, they begin to dent in the skin within a few days and dark brown spots appear, which indicates that the fruit has been frostbite.

Most tropical fruits are not suitable for refrigerating in the refrigerator. Frostbite fruit not only destroys nutrients, but also deteriorates easily. In a few days, the flesh will rot.

In general, temperate fruits, such as, and so on, can be used to keep fresh. When stored at a temperature of 10°C and mango, the peel will turn black; when stored at 6°C to 10°C, not only the peel will change color but also the pulp will be in a water-soaked state; litchi and longan, rambutan, etc. at 1°C - Stored at -2°C, the color of the outer skin will darken, and the inner peel will appear as spots like scalds, and such fruits can no longer be eaten.

Tropical fruits are best stored in dark, cool places. If you must put in the refrigerator, it should be placed in the vegetable and fruit trough with higher temperature. It is better not to save more than two days.

API Powder (Active Pharmaceutical Ingredient)

Active Pharmaceutical Ingredients refer to the raw materials used in the production of various preparations. They are the effective ingredients in the preparations. They are various powders, crystals, extracts, etc., prepared by chemical synthesis, plant extraction or biotechnology, but Substances that the patient cannot take directly.

According to its source,Active Pharmaceutical Ingredients are divided into two categories: synthetic chemical drugs and natural chemical drugs.Chemical synthetic drugs can be divided into inorganic synthetic drugs and organic synthetic drugs. Inorganic synthetic drugs are inorganic compounds (extremely elements), such as aluminum hydroxide and magnesium trisilicate used to treat gastric and duodenal ulcers; organic synthetic drugs are mainly composed of basic organic chemical raw materials, through a series of organic Drugs made by chemical reactions (such as aspirin, chloramphenicol, caffeine, etc.).

Natural chemical drugs can also be divided into biochemical drugs and phytochemical drugs according to their sources.Antibiotics are generally made by microbial fermentation, which belongs to the category of biochemistry.In recent years, many semisynthetic antibiotics are the combination of biosynthesis and chemosynthesis.Among APIs, organic synthetic drugs account for the largest proportion in variety, yield and output value, which is the main pillar of chemical pharmaceutical industry.The quality of API determines the quality of preparation, so its quality standards are very strict. All countries in the world have formulated strict national pharmacopoeia standards and quality control methods for its widely used API

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