Summary: Regard guava as raw materials， adopt the organic solvent to extract the law， pass the single factor experiment and orthogonal experiment， to influence many phenol draw abstraction pharmaceutical kind of quantity， draw pharmaceutical volume mark， draw time， draw temperature factor go on the discussion compared with material liquid，， the ones that confirm much phenol of guava draw the craft parameter bestly: Volume mark 70% ethanol according to material 1:10 volume ratio of liquid， 70 ℃lay reflux draw 40min in temperature， many abstraction amount of phenol can reach 35mg/g be Keyword: Guava; Much phenol; Draw the craft
