White sugar is sucrose, but it is impure. Sucrose is a binary sugar that can be obtained from sugar cane (in the south) and beetroot (in the north).

Sucrose is a non-reducing disaccharide, which is formed by shrinking one molecule of glucose and one molecule of fructose at specific bond positions. It cannot react with the above weak oxidants. After it is ingested by the human body, it is broken down into two molecules of glucose under the action of relevant specific enzymes to participate in energy supply, or is converted into liver glycogen and muscle glycogen for storage in the body.

The main raw materials of white sugar are sugar cane and beets. Sugar cane grows in tropical and subtropical areas and requires large amounts of regular rain to produce sugar. Drought will seriously affect unit output. The growing period is from April to April every year. October, the harvesting season is from November to April of the following year. The factory uses high pressure to squeeze the sugar cane juice, and after boiling and concentration, the center separates to form sugar crystals. This crystal is called jaggery and is light brown in color. Jaggery is refined into white sugar for consumption. Sugar beets grow in temperate climate zones. my country’s annual sugar beet sugar production is small, accounting for only about 20% of the annual white sugar production. According to different sugar production processes, white sugar can be divided into sulfurized sugar and carbonized sugar. Carbonized sugar has a longer shelf life, better quality, and is relatively expensive. At present, most sugar factories in my country produce sulfated sugar. White sugar is divided into four levels: refined, superior, first-grade and second-grade according to technical requirements.

At present, the main raw materials for sugar in the world are sugar cane and sugar beet. Although the sugar raw materials are different, there is no difference in quality between cane sugar and beet sugar, and the national standard for white sugar applies equally to both.

The factory uses sugar cane and beet to squeeze sugar juice. After boiling and concentration, the center is separated to form sugar crystals. This crystal is called jaggery (or raw sugar) and is light brown. Jaggery is refined into white sugar for daily consumption. In addition to sugar cane and beets, white sugar can also be processed from raw sugar, jaggery and other sugars with high sucrose content.

Currently, there are three main sugar refining methods or clarification methods used in countries around the world: lime method, sulfurous acid method and carbonic acid method. The lime method can only produce darker jaggery, while the sulfite method can produce white sugar for direct consumption (the white sugar produced is called sulfurized sugar). Although the white sugar produced by this method is worse than the white sugar produced by the carbonic acid method in terms of whiteness and sugar yield, the sulfurous acid method has the advantages of shorter process flow, less equipment and less clarifier consumption, so it is used in It is still widely used in domestic large, medium and small cane sugar mills. Overseas, in the past decade or so, with the increase in the consumption of refined sugar, many sugar factories that used the sulfurous acid method have successively changed to the lime method, and the jaggery produced is then melted and refined. However, in the vast number of developing countries, the sulfite method still occupies an important position. The method of using lime and carbon dioxide as clarifiers to clarify cane juice is called the carbonation method (the sugar produced is called carbonized sugar). The carbonic acid method removes more non-sugar substances than the sulfuric acid method, and the total recovery rate is also relatively high. The finished sugar produced has higher purity, lower color value, and can be stored for a long time without discoloration. However, the carbonic acid method also has some disadvantages, such as the process is relatively complex and requires a lot of machinery and equipment; it also consumes a large amount of lime and carbon dioxide, so the production cost is high. Especially in areas where sugar mills are far away from limestone production areas, the promotion of the carbonation method is subject to certain restrictions.

White rock sugar is made from dissolved white sugar that has been purified and then crystallized naturally. White rock sugar has the characteristics of being sweet, nourishing the lungs, and crystal clear. It is suitable for use in stews, nourishing drinks, etc.