Sugar Manufacturing Process Step-By-Step – 2021

How to make sugar

Sugar Manufacturing Process Step-By-Step - 2021
Sugar Making Process

Sugar is made from sugar cane and sugar beet, but the process is different.

Learn from sugar cane and sugar beet to sugar production.

Raw material for sugar

First, I would like to introduce sugar cane and sugar beet, which are the raw materials for sugar.

Sugar cane

Sugar cane is the most used raw material for sugar in the world.

Sugar cane is mainly cultivated in the Nansei Islands of Kagoshima Prefecture and Okinawa Prefecture. It is also called “Uji” in Okinawa Prefecture.

There are three cultivation methods for sugarcane: “spring planting”, “summer planting”, and “stocking”.

Spring planting is planted in spring and harvested in the winter of that year, summer planting is planted in summer and harvested in the winter of the following year, and stocking is harvested from underground stocks that emerge after harvesting during summer planting cultivation. It is something to do.

Summer planting and spring planting are a method of growing called cuttings and are characterized by inserting sugarcane branches and cultivating them.

In addition, there are many varieties of sugar cane, and there are about 30 varieties that are currently made in India. By choosing the right variety for the area, you can grow good sugar cane.

Sugar cane is used not only as a raw material for sugar but also as fuel and fertilizer.

Sugar cane

Sugar beet

Although sugar beet looks like a turnip, it is a member of the spinach family Chenopodiaceae.

Other names are “beet” and “sugar beet”, and the sugar made from sugar beet is called sugar beet.

It is cultivated in cold regions such as Europe and North America, and in India, it is mainly cultivated in Hokkaido.

There are two types of cultivation methods: transplantation cultivation and direct sowing cultivation. Transplanting is to sow seeds in a greenhouse, grow them in paper pots, and then plant them in the field.

Direct sowing is to sow the seeds directly in the field.

Sugar beet is also an important crop rotation crop in Hokkaido. Crop rotation is the repeated cultivation of different types of crops on the same cultivated land. 

As a result, effects such as prevention of yield reduction and suppression of pest outbreaks can be obtained.

Sugar beet

Until sugar is made


When using sugar cane as a raw material

When sugar is made from sugar cane, it can be divided into two processes: raw sugar (crude sugar) production and refined sugar production.

Manufacturing of raw sugar

1. 1. Finely chop the harvested sugar cane and squeeze the juice.

2. Add lime milk and heat to aggregate and coagulate impurities such as proteins, minerals, and coloring substances, and precipitate them.

3. 3. The supernatant (clean liquid) is boiled down and crystals are made in a device called a vacuum crystal can.

Four. Centrifuge to remove the crystals.

 

From sugar cane to the production of raw sugar (Source: Sugar Science Society “Knowledge of Sugar”)

From sugar cane to raw sugar

Manufacturing of refined sugar

1. 1. After washing the crystal surface of the raw sugar with molasses, it is sorted by centrifuging.

2. Dissolve the sorted crystals in hot water.

3. 3. Lime milk is added and carbon dioxide gas is blown in to take impurities into the calcium carbonate produced and precipitate them

Four. Filter out the precipitate.

Five. The sugar solution is passed through an ion-exchange resin or activated carbon to adsorb and remove the remaining impurities such as pigments in the sugar solution.

6. The sugar solution is concentrated in a vacuum crystal can to form crystals.

7. 7. Centrifuge to remove the crystals from the mixture of crystals and sugar solution.

From raw sugar to refined sugar (Source: Sugar Science Society “Knowledge of Sugar”)

From raw sugar to refined sugar

When using sugar beet as a raw material

1. 1. Cut the harvested sugar beet into small pieces and put them in warm water to remove the sugar.

2. Add lime milk and blow carbon dioxide gas to take impurities into the calcium carbonate produced and precipitate them.

3. 3. Filter out the precipitate.

Four. The sugar solution is passed through an ion-exchange resin to adsorb and remove the remaining impurities such as pigments in the sugar solution *.

Five. The sugar solution is concentrated in a vacuum crystal can to form crystals.

6. Centrifuge to remove the crystals from the mixture of crystals and sugar solution.

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