Alkaline and Enzymatic Treatments for the Exctraction of High Purity Natural Rubber from Taraxacum kok-saghyz (TK) Compositional Analysis as a Tool to Improve the Processing of Taraxacum kok-saghyz Roots Liquid guayule natural rubber, a sustainable processing aid, improves the processability and mechanical properties of natural and synthetic rubber composites Post-Harvest Ethephon Application in Taraxacum kok-saghyz Roots