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Post Harvest Technology :: Agriculture :: Sugar Crops

Constituents of sugarcane and sugarcane juice
The sugarcane contains not only sucrose but also numerous other dissolved substances, as well as cellulose or woody fibre. The percentage of sugar (polarization) in the cane varies from 8 to 16 per cent and depends to a great extent on the variety of cane, its maturity, the condition of the soil, the climate and agricultural practices followed.

The constituents of the ripe cane vary widely in different countries and regions but fall generally within the following limits:

Sl.No Constituents Level, %
Ripe cane Cane Juice  
1 Water 69 to   75 75 to 88
2 Sucrose 8   to   16  10 to 21 Total solids 12 -23 0 brix
3 Reducing sugars 
(Dextrose, Levullose)
0.5 to 2.0 0.3 to 3.0
4 Organic matter other than sugar 0.5  to   1.0 0.5 to 1.0
5 Inorganic compounds 0.2 to 0.6   0.2 to 0.6
6 Nitrogenous bodies 0.5  to 1.0  0.5 to 1.0
7 Ash 0.3 to 0.8    
8 Fibre 10.0 to 16.0    
Other organic compounds include proteins, organic acids, pentosans and pectins (gums), colouring matters and wax. Organic acids present in the cane juice are glycollic acid, malic acid, succinic acid and a small quantity offanoic acid, butyric acid and aconitic acid. These vary from 0.5 to 1.0 per cent of cane by weight. The inorganic compounds are made up of phosphates, chlorides, sul­phates, nitrates and silicates, sodium, potassium, calcium, magnesium, aluminium and iron chiefly. These are present to the extent of 0.2 to 0.6 per cent. The 'Nitrogenous bodies' are albuminoids, amides, amino acids, ammonia and xanthine bases. These are present to the extent of 0.5 to 1-0 per cent. Fibre is the insoluble substance in cane. Dry fibre contains about 18 per cent lignin, 15 per cent water soluble substances, 45 per cent cellulose and the remainder hemicellulose. The colouring matters viz. (i) Chlorophyll, (ii) Anthocyanin, (iii) Saccharetin and (iv)Tannins are present in sugarcane juice.

Please click below for more details :

Bottling of Sugarcane Juice
Flow chart for preparation of sugarcane juice
Procedure for bottling the juice
Technology Available :
Post Harvest Technology Centre, TNAU, Coimbatore.

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