Rubber guayule

PAN, Z., DURST, F, WERCK-REICHHART, D., GARDNER, H.W., CAMARA, B., CORNISH, K., BACKHAUS, R. A., The major protein of guayule rubber particles is a cytochrome P450. Characterization based on cDNA cloning and spectroscopic analysis of the solubilized enzyme and its reaction products, J. Bio. Chem., 1995, 270, 8487-8494. 

Batch No. Amount of Guayule Rubber Used, g Amount of Chlorinated Rubber Isolated, g Cl%... 

Pan, Z.Q., Herickhoff, L. and Backhaus, R.A. (1996) Cloning, characterization and heterologous expression of cDNAs for famesyl diphosphate synthase from the guayule rubber plant reveals that this prenyltransferase occurs in rubber particles. Arch. Biochem. Biophys., 332, 196-204. 

Another problem is that some persons are allergic to the proteins often found in natural rubber. This can be avoided by the use of a polyurethane condom. Unfortunately, as now made, these are more likely to tear (7-9% of the time) than the rubber latex condoms (2% of the time).65 It has been suggested that they be made of guayule rubber latex, which is free of the allergens.66 Thermoplastic elastomers, such as polystyrene-6-(ethylene-co-butene)-Apolystyr ene have been used to make gloves that are more resistant to ozone than those made of natural rubber.67 These should resist aging better than those made of natural rubber. It should be possible to mold a condom without holes from a thermoplastic rubber. 

Guayule rubber (cPl) tPl (Trans-PlP from Polysar) experimental details were not given. 

Nivert, J. J. Glymph, E. M. Snyder, C. E. "Preliminary Economic Analysis of Guayule Rubber Production", 2nd International Guayule Conference, Saltillo, Coahuila, Mexico, Aug. 1977. 

Guayule rubber is found in individual thin-walled cells throughout the plant with the exception of the leaves (Rubis et al., 1981). 

Guayule rubber contains hypoallergenic proteins that do not trigger an allergic reaction. Harder, less soluble in organic solvents and more crystalline compared to Hevea rubber, tommands a very small commercial market in relation to Hevea rubber. 

Table 3. Properties of Guayule Rubber from the Bridgestone/Firestone Prototype Processing Facility...

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