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Fig. 2 | BMC Complementary Medicine and Therapies

Fig. 2

From: Optimization for ultrasonic-microwave synergetic extraction of total iridoid glycosides and screening of analgesic and anti-inflammatory active fractions from patrinia scabra Bunge (Valerianaceae)

Fig. 2

Response surface diagrams of the effect of ethanol concentration (%), material-to-liquid ratio (g/mL), microwave power (W), extraction time (min) and their interactions on the content of total iridoid glycosides from P. scabra. a Ethanol concentration and material-to-liquid ratio. b Ethanol concentration and microwave power. c Ethanol concentration and extraction time. d Material-to-liquid ratio and microwave power. e Material-liquid ratio and extraction time. f Microwave power and extraction time

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