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Table 4 The content changes of the four astilbin isomers in SGR samples pretreated by different methods

From: Influence of different pretreatments and drying methods on the chemical compositions and bioactivities of Smilacis Glabrae Rhizoma

Pretreatment methods

Neoastilbin

Astilbin

Neoisoastilbin

Isoastilbin

(μg/g)

(%)

(μg/g)

(%)

(μg/g)

(%)

(μg/g)

(%)

Un-pretreated

416.5 ± 6.96

–

3368.36 ± 35.51

–

125.05 ± 1.55

–

518.45 ± 7.18

–

Boiled

1549.23 ± 37.85

 + 271.96

3386.11 ± 174.17

+ 0.53

1517.53 ± 36.45

 + 1113.54

640.24 ± 13.12

 + 23.49

Steamed

3125.3 ± 29.42

 + 650.36

1437.91 ± 14.52

− 57.31

845.22 ± 16.88

 + 575.91

938.22 ± 10.29

 + 80.97