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. 2022 May 6;17:54. doi: 10.1186/s13020-022-00614-7

Table 4.

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

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