What is used to produce sugar?
Preparation of sugar :
Preparation of sugar is listed here in this article.Sugar is a sweetness that most of us particularly appreciate. It is mainly composed of sucrose and its manufacture is done – probably since -10,000 BC. AD – from sugar plants.
Theis manufactured from sugar crops: sugar beet or . In 2015, no less than 172 million tonnes of were produced, according to the United States Department of .
Harvesting of sugar cane and beets:
It is at the end of the year that the beets are harvested, generally between September and December. The canes, on the other hand, are cut between July and November on the Reunion side and from February to June in the Antilles. They are then transported to the sugar refinery where they cannot be stored for a long time, on pain of losing their sugar concentration. They are therefore quickly washed and cut there.
Cane sugar, beet sugar: extraction and purification
The extraction of sugar is done in a “soft” way: by grinding concerning the canes and byconcerning the beets. The pieces of canes are therefore pressed by several mills. The beet pieces, on the other hand, circulate in a water which is gradually enriched with sugar to form a sugar juice.
The latter contains impurities (salts , , etc.) which must be removed. The method: carbon-carbon purification. It consists in adding then so as to transform the impurities into salts or to make them precipitate.
Evaporation and crystallization (sugar refining):
The juice thus filtered still contains 85% water, which will be eliminated by evaporation. Brought to a boil, it will pass through several boilers, with temperatures andwhich will decrease. At the end of the cycle, a syrup composed of some 70% sucrose is obtained.
In a vacuum cooking boiler, very fine sugar crystals will then inoculate the syrup and its crystallization will become generalized. Thiscan also be done chemically, using or anthraquinone blue.
Spinning, drying and conditioning:
The mixture is then sent to turbines where, under the action of, the white sugar will deposit on the walls. Then it will be dried in hot , cooled and stored before being conditioned, at least as far as beet sugar is concerned.
Cane sugar will generally undergo three cooking and spinning cycles.
Get the maximum amount of sugar from the same amount of cane. The sugar recovered after each cycle, on the other hand, will be increasingly loaded with impurities.
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