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. Author manuscript; available in PMC: 2010 Jul 12.
Published in final edited form as: J Pharm Biomed Anal. 2009 Feb 20;49(5):1141–1149. doi: 10.1016/j.jpba.2009.02.011

Figure 4. Yield of dissolved solids in ethanolic extracts of Echinacea purpurea roots.

Figure 4

Mass of dissolved solids was determined by evaporation of the ethanol/water solvent from aliquots of extracts, and this value was ratioed to the quantity of root (dry weight) used to prepare an equivalent volume of extract to calculate dissolved solids yield. Yield of dissolved solids in the 1:11 extraction does not statistically differ from 1:5 extraction. The fresh root extraction (1:2) differs from the 1:11 and the 1:5 extraction by 26.8% and 32.4% respectively.

*indicates p<0.005;** indicates p<0.001.