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Table 3 Quantitative assay results of the component herbs

From: Quality assurance for Chinese herbal formulae: standardization of IBS-20, a 20-herb preparation

Pharmaceutical name Reference marker Limit (minimum) Analytical results
Radix Angelicae Dahuricae Imperatorin 0.080%a 0.081%
Herba Artemisiae Scopariae Chlorogenic acid -- 0.31%
Rhizoma Atractylodis Macrocephalae -- -- --
Radix Aucklandiae Sum of costunolide and dehydrocostus lactone 2.2%b 2.7%
Radix Bupleuri Saikosaponin a 0.16%b 0.43%
Pericarpium Citri Reticulatae Hesperidin 3.5%a 6.5%
Radix Codonopsis Lobetyolin 0.029%b 0.069%
Semen Coicis Glycerol trioleate 0.50a 1.1%
Rhizoma Coptidis Berberine Palmatine 4.1%b 0.30%b 7.4% 1.8%
Cortex Fraxini Sum of aesculetin and esculin 1.0%a 2.1%
Radix et Rhizoma Glycyrrhizae Praeparata cum Melle Glycyrrhizic acid -- 2.7%
Cortex Magnoliae Officinalis Sum of magnolol and honokiol 2.0%b 2.3%
Radix Paeoniae Alba Paeoniflorin 1.6%a 1.8%
Semen Plantaginis -- -- --
Cortex Phellodendri Amurensis Berberine Palmatine 0.33%b 0.18%b 0.95% 0.40
Herba Pogostemonis Patchouli alcohol 0.10%a 0.23%
Poria -- -- --
Radix Saposhnikoviae Sum of prim-O-Glucosylcimifugin and 5-O-methylvisammioside 0.24%b 0.42%
Fructus Schisandrae Chinensis Schisandrin 0.40%a 0.66%
Rhizoma Zingiberis Praeparatum 6-Gingerol -- 0.31%
  1. a Limit required by the Pharmacopoeia of the People's Republic of China (2005 edition).
  2. b Limit required by the Hong Kong Chinese Materia Medica Standards.