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HPLC separations of phenolic compounds from a B. alba stem (Peak 3—gallic acid; Peak 4—salicylic acid; Peak 5—ferulic acid) and b B. rubra stem (Peak 1—4-hydroxy benzaldehyde; Peak 2—caffeic acid; Peak 3—p-Coumaric acid; Peak 4—trans-cinnamic acid; Peak 5—diosmetin; Peak 6—galloyl shikimic acid)
