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Table 1 The absorption maxima (λmax) in different extracts of O. stamineus leaves from UV-Vis and the value of extraction factor (EF)

From: Selected metabolites profiling of Orthosiphon stamineus Benth leaves extracts combined with chemometrics analysis and correlation with biological activities

Extracts

wavelength (λmax)

Extraction Factor (EF) ± SD

* meoh-s

329

136.29 ± 0.10

 

286

122.85 ± 0.56

* mw-s

328

142.49 ± 0.05

 

283

158.25 ± 0.07

* etoh-s

329

107.29 ± 0.02

 

283

119.66 ± 0.16

* ew-s

331

108.61 ± 0.01

 

284

110.79 ± 0.08

* water-r

329

135.38 ± 0.04

 

284

136.77 ± 0.02

* meoh-m

331

125.02 ± 0.02

 

285

113.96 ± 0.01

* mw-m

328

161.88 ± 0.01

 

283

186.98 ± 0.05

* etoh-m

332

264.83 ± 0.02

 

286

228.31 ± 0.05

* ew-m

329

167.21 ± 0.24

 

286

135.01 ± 0.05

* water-m

279

104.17 ± 0.01

  1. *meoh-s = methanol soxhlet; mw-s = methanol:water (1:1) soxhlet; etoh-s = ethanol soxhlet; ew-s = ethanol:water (1:1) soxhlet; water-r = water reflux; meoh-m = methanol maceration; mw-m = methanol:water (1:1) maceration; etoh-m = ethanol maceration; ew-m = ethanol:water (1:1) maceration; water-m = water maceration
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BMC Complementary Medicine and Therapies

ISSN: 2662-7671

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