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  Indian J Med Microbiol
 

Figure 7 :Comparison of different extraction methods on the yields of 1 and 2 from I. helenium roots: MSDE 4 hours; infusion boiling H2O, 10 min; maceration 70% EtOH, 24 hours, room temperature; UAE1 ultrasound-assisted extraction in 70% EtOH, 30 min, 25C; UAE2 ultrasound-assisted extraction in 96% EtOH, 30 min, 25C

Figure 7 :Comparison of different extraction methods on the yields of 1 and 2 from I. helenium roots: MSDE 4 hours; infusion  boiling H2O, 10 min; maceration  70% EtOH, 24 hours, room temperature; UAE1  ultrasound-assisted extraction in 70% EtOH, 30 min, 25C; UAE2  ultrasound-assisted extraction in 96% EtOH, 30 min, 25C