Products and By-Products

Sugarcane milling process produces many sugar products and by products. The two basic types of sugar produced in the different sugar districts in the Philippines are the raw and refined. The raw brown sugar can be processed further to produce refine sugar or packed raw for local and export markets. Other sugar products such as "pilon", "panocha" and "muscovado" are produced through the crude milling process while beet pulp is an output of the refining process.


Product Utilization/Application

Sugar and its by products have many uses. Sugar and sugar products like "pilon", "panocha", and "muscovado" are commonly used as sweetener in food products like candies, sweets, cakes, pastries, bread, soft drinks and other beverages.

Bagasse is the fibrous material left after the sugarcane is crushed and its juice is extracted. It contains, on dry basis, approximately 49% cellulose, 26% pentosan and 19% lignin (del Rosario et al., 1977; Ocampo et al., 1976). The hexans and cellulose contained in sugarcane bagasse may be hydrolyzed into hexoses which can be fermented by yeast into ethanol. The sugar of bagasse hydrolysate consisted of 29% glucose and 61% pentoses. Results of study indicated that the low alcohol concentration obtained in the hydrolysate of sugarcane bagasse combined with its unfavorable sugar into alcohol conversion efficiency does not make sugarcane bagasse an attractive material for alcohol production but appears quite suitable for the production of feed yeast (del Rosario, E. J et al., 1981).

At present, bagasse is used as fuel for the boilers of sugar mill to generate power and electricity for the plant. In Camarines Sur sugar mill district, of the 11,098.69 MT bagasse produced per milling season, only about 50% or 5,549.34 MT is utilized as fuel. The other 50%, which at the moment remains untapped can be used in the production of particleboard, organic fertilizer and a promising raw material for the manufacture of pulp and paper. As feed, it is a very good source of dietary fiber for livestock.

Another major by product of both cane and beet manufacture is molasses. It is a dark brown sticky syrup formed during the centrifugation/drying process of cane extracts. It is used by local distiller as feedstock for making potable alcohol and yeast and by local feed millers as component for animal feeds. Other products such as distillery slops, MSG, citric acid, lysine and dextrose/sorbitol can also be derived from it.

Beet pulp is used extensively as livestock feed. The waste water pressed from beet pulp after the refining process yield monosodium glutamate (MSG), a chemical that is used in food seasoning.

Filter cake or mud press is a chocolate, sticky waste during juice extraction of cane stalks containing 5-15 % protein, calcium and phosphorus; 5-15 % sugar; 10-30% fiber; 10-20% ash and other micronutrients. It is a by-product with high potential as important component of organic fertilizer and animal feed and as source of sugarcane wax and methane (gas for fuel) when process.