White granulated sugar is a refined sugar, and its production steps mainly include the following steps:
1. Sugarcane juicing: First, you need to peel the sugarcane and juice it.
2. Sedimentation and filtration: After juicing, there will be some impurities in the juice, which need to be allowed to settle for a while and then filtered out.
3. Heating and concentration: pour the sugarcane juice into the pot and heat it, and keep stirring to prevent the bottom from being burnt. When heated to a certain degree, the water will evaporate and the sugar solution will become sticky. Continue to heat and stir until the sugar solution becomes very viscous and can be pulled out.
4. Cooling and coagulation: pour the viscous sugar solution into the mold, and after cooling for a period of time, the sugar solution will solidify into blocks.
5. demoulding and processing: take the solidified sugar out of the mold and carry out necessary processing, such as grinding and cutting, to get our common white sugar.
Although the production method of white sugar was not invented by China, in the history of China, the "yellow mud and sugar drenching method" invented in the middle of Ming Dynasty is a very famous method for making white sugar. In this method, sugar cane is juiced and boiled on fire. First, it is made into black sugar according to the conventional method, then the prepared black sugar is put into a tile funnel to agglomerate, and then yellow mud water is poured into the funnel to react, so that white sugar can be obtained. After being invented in Fujian, this method quickly spread all over Daming, which had an important influence on the history of sugar production in the world.