[CH3:1][C:2]([CH3:4])=[O:3].[CH3:5][C:6]([CH3:8])=[O:7].[CH3:9][CH2:10][CH2:11][CH2:12][CH3:13]>>[CH3:1][C:2]([CH3:4])=[O:3].[CH3:5][C:6]([CH3:8])=[O:7].[CH3:9][CH2:10][CH2:11][CH2:12][CH3:13]The previous examples (V and VI) show that 2-step immersion extraction using acetone, then acetone/pentane azeotrope is a viable method for extraction of resin and rubber from guayule shrub. Expression of bagasse or multiple rinses may be used to increase the yield or efficiency of either step.
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