Cassava is multifaceted crop that is finding many industrial applications, worldwide. Some of the current applications include; adhesives, corrugated boards, gums, wallpaper, foundry, well drilling, paper industry, textile industry, wood furniture, particle board, biofuels, alcohol Wes Welker Youth Jersey products, dusting powders, drugs, plastics, packaging, stain remover, concrete stabilizer and moisture sequester.
Cassava is a multipurpose root crop that has a wide range of industrial uses. Some of the industrial uses of cassava starch are Elite Cary Williams Jersey described below. [1-3]1. Starch when treated appropriately makes a good natural adhesive. There are basically two types of adhesives made from starches and dextrins include roll-dried adhesives and cvxdfff678 liquid adhesives. 2. Corrugated cardboard manufacture. One of the large users of modified starches is the corrugated cardboard industry for the manufacture of cartons. Boxes and other packing materials. The layers of board are glued together with a suspension of raw starch in a solution of the gelatinized form. The board is pressed between hot rollers, which effects a gelatinization of the raw starch and results in a very strong bonding. Medium-quality flours are suitable for this purpose provided the pulp content is not too high.3. Remoistening gums. These adhesives are coated and dried on surfaces, such as postage stamps and envelope flaps, for moistening by the user before application to another surface. Cassava dextrins in aqueous solution are well suited for this purpose as they give a high solids solution with clean machining properties.4. Wallpaper and other home uses. Various types of starch-based products are used as adhesives for wallpaper and other domestic uses.5. Foundry. Starch is used as an adhesive for coating the sand grains and binding them together in making cores which are placed in moulds in the manufacture of castings for metals.6. Well drilling. Starches and modified starches mixed with clay are used to give the correct viscosity and water-holding capacity in bores for the exploratory drilling of oil wells or water wells. These starch products are replacing other commercial products for making the muddy materials which are indispensable for drilling wells. For this purpose a coldwater-soluble pregelatinized starch which can be made up to a paste of the required concentration on the spot is desired.7. Paper industry. In the paper and board industries, starch is used in large quantities at three points during the process:
(i) At the end of the wet treatment, when the basic cellulose fiber is beaten to the desired pulp in order to increase the strength of the finished paper and to impart body and resistance to scuffing and folding;
(ii) At the size press, when the paper sheet or board has been formed and partially dried, starch (generally oxidized or modified) is usually added to one or both sides of the paper sheet or board to improve the finish, appearance, strength and printing properties;
(iii) In the coating operation, when a pigment coating is required for the paper, starch acts as a coating agent and as an adhesive.8. Textile industry. In the textile industry, starches occupy an important place in such operations as warp sizing, cloth finishing and printing. Warp sizing is the application of a protective coating to prevent the single yarns from disintegrating during weaving. The size consists of an adhesive and a lubricant and is generally removed after weaving. Cloth finishing alters the "feel" of the fabric by making it firmer, stiffer and heavier. Cassava starch is also used for cloth printing or producing certain designs in various colours on the smooth surface of Andre Johnson Texans Jersey a finished fabric. While cassava accounted for about 20 percent of all starch for these purposes in 1937, it has been largely replaced by other starches after the Second World War.9. Wood furniture. Before the Second World War the manufacture of plywood and veneer relied mainly on cassava as glue. The basic material in this case is gelatinized at room temperature with about double the amount of a solution of sodium hydroxide. After prolonged kneading of the very stiff paste in order to give it the required stringy consistency, the glue is applied to the wood with rollers. As the presence of a certain amount of the pulp is useful, medium- to low-quality flours are acceptable or even preferable, although the presence of sand is objectionable.10. Particle board. Cassava stalks are used to make particle boards. Stalks are cut into small sections and mixed with certain resins to make particle boards.11. Cassava as a biofuel crop. In Brazil, sugar cane is a major bio-energy crop and has made this country a world leader in bio-ethanol production. Cassava has the potential to become another major bio-energy crop together with sugar cane. It is an attractive fuel crop because it can give high yields of starch and total dry matter in spite of drought conditions and poor soil. Energy requirements of cassava represent only 5"6% of the final energy content of the total biomass, showing an energy Nike Peyton Manning Jersey profit of 95%, assuming complete utilisation of the energy content of the total biomass. 12. Alcohol production from cassava has an overall efficiency of 32%. Cassava could become an industrial crop by developing cultivars with different starch compositions. Useful variations in native starch quality " altering the proportion of amylase to amylopectin, for instance, which changes the physiochemical properties of the polymer " could open new market niches at better prices.13. Bio-ethanol production. Brazil has already started producing bio-ethanol from cassava. Many African countries are now becoming major producers of bio-ethanol production. Cassava mutants could be developed to produce value-added biomass for cost-effective production of bio-ethanol. 14. Dusting powders. Starch can be made into finely powdered substances free of grittiness. This can be applied to the skin to reduce friction and moisture. By cross-linking starch with other agents, starch can be sterilized in autoclave and used a surgical dusting powder.15. Plastic and packaging. Starch can be incorporated into plastics to improve the biodegradability of the plastic and finished product.16. Stain remover. This can be applied directly to fabrics as a dry powder or a paste, allowed to dry and then brush off.17. Detergents. Starch is an effective dirt redeposition
inhibitor preventing the re-entry of dirt once it has been removed from the fabric.18. Gypsum and Mineral Fiber. Starch is used a binder in gypsum plaster, gypsum and mineral fiber board.19. Concrete. Starch is often added to concrete to reduce the set-time in cement.20. Coal. Starch is used as a binder in briquettes made from coal dust.21. Nappy/Diaper. Starch is used a superabsorbent gelling material capable of sequestering 80 times their weight of moisture. Conclusion:飪?Cassava is a multifaceted and multifunctional crop.
飪?Cassava is used in the manufacture of: adhesives, corrugated boards, gums, wallpaper, foundry materials, well drilling, paper, textile, wood furniture, particle board, biofuels, dusting powders, drugs, plastic, packaging, stain remover, and moisture sequester.
2. FAO. Proceedings of the workshop on processing technologies for cassava and other tropical roots and tubers in Africa, November 28th-December 2nd, 1983.