Hevea brasiliensis, a forest tree, is the only major commercial source of natural rubber (NR) in the world. The properties of natural rubber is strain-induced crystallization, tensile strength, high resilience, resistance to impact and tear, low heat build-up, and building tack. and major source material requirement especially in tire industry.
Natural rubber (NR) is known to possess many superior mechanical properties over its synthetic counterpart, namely, poly (cis-1,4-isoprene) synthetic rubber (SR). Though chemically synthesized polyisoprene structures of IR are similar to NR, synthetic rubber cannot comply with specific technical requirement especially in tire industry (truck, plane). Nevertheless, major drawback of NR is its lack of quality consistency which could lead to various problems during manufacturing. The natural latex is nonisoprene components account for about 5 %of the raw dry rubber derived from latex. They comprise proteins, carbohydrates, lipids and inorganic constituents and quantity of these nonisoprene components can vary greatly depending on the clones, the exploitation system, and the environmental conditions. (Vaysse L., et al ,2012)
Due to the structure of synthetic rubber is composition almost similar to natural rubber but different in natural rubber have nonisoprene. Therefore, this research aims to study extraction yield of protein in natural rubber by ultrasonic technique