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. 2021 Mar 29;11:7020. doi: 10.1038/s41598-021-86410-z

Table 1.

The quantification of major phyto-constituents present in the ethanolic extract of Aspalathus linearis and its fractions; using Ultra-Performance Liquid Chromatography—Quantitative Time of Flight.

Compounds Quantification (µgcompound/mgsample injected ± SDs)
Crude extract Hexane Fraction DCMb fraction EtOAcc fraction EtOHd fraction AcOHe fraction Water fraction
Aspalathin (1) 338.96 ± 1.90 NDa 0.69 ± 0.82 704.08 ± 12.05 364.98 ± 5.85 95.14 ± 0.91 191.84 ± 2.68
Caffeic acid (2) 0.05 ± 0.003 0.02 ± 0.05 0.02 ± 0.05 0.02 ± 0.05 0.04 ± 0.004 0.04 ± 0.005 0.05 ± 0.004
Catechin (3) 0.79 ± 0.25 0.36 ± 0.18 0.32 ± 0.17 1.85 ± 0.44 1.84 ± 0.44 0.32 ± 0.17 0.46 ± 0.19
Cinnamic acid (4) 1.80 ± 0.82 1.00 ± 0.85 1.70 ± 0.82 2.21 ± 0.80 0.03 ± 0.88 2.15 ± 0.80 0.77 ± 0.85
Ferulic acid (5) 0.007 ± 0.01 0.022 ± 0.004 0.424 ± 0.05 0.411 ± 0.05 0.016 ± 0.01 0.031 ± 0.003 0.034 ± 0.002
4-Hydroxybenzoic acid (6) 3.07 ± 0.41 2.89 ± 0.38 0.57 ± 0.09 6.42 ± 0.83 4.02 ± 0.53 1.59 ± 0.22 4.60 ± 0.60
Isoquercitrin (7) 5.07 ± 1.10 8.92 ± 0.89 134.49 ± 6.02 NDa 8.61 ± 0.90 73.50 ± 2.67 NDa
Luteolin (8) 0.01 ± 0.02 0.02 ± 0.02 0.01 ± 0.02 0.09 ± 0.01 0.03 ± 0.02 0.06 ± 0.02 0.01 ± 0.02
p-Coumaric acid (9) 0.001 ± 0.003 NDa 0.145 ± 0.06 0.015 ± 0.003 NDa 0.020 ± 0.01 0.001 ± 0.003
n-Propyl gallate (10) 0.088 ± 0.004 0.088 ± 0.003 0.088 ± 0.003 0.094 ± 0.001 0.086 ± 0.004 0.085 ± 0.004 0.101 ± 0.001
Quercetin (11) 8.61 ± 0.43 7.37 ± 0.47 0.82 ± 0.67 14.68 ± 0.25 10.46 ± 0.37 4.57 ± 0.55 10.29 ± 0.38
Rosmarinic acid (12) 0.24 ± 0.09 0.08 ± 0.02 0.08 ± 0.02 0.11 ± 0.03 0.13 ± 0.04 0.09 ± 0.03 0.09 ± 0.03
Syringic acid (13) 0.12 ± 0.003 0.09 ± 0.004 0.09 ± 0.004 0.07 ± 0.01 0.09 ± 0.004 0.09 ± 0.004 0.07 ± 0.01
Vanillic acid (14) 0.12 ± 0.001 0.34 ± 0.001 0.24 ± 0.001 NDa 0.01 ± 0.001 NDa 0.13 ± 0.001
Vitexin (15) 5.61 ± 0.59 6.20 ± 0.69 0.56 ± 0.23 15.95 ± 2.27 9.64 ± 1.25 4.21 ± 0.36 9.48 ± 1.22

aND not detected.

bDichloromethane.

cEthyl acetate.

dEthanol.

eAcetic acid.