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Table 2 Determination of tectoridin and 6"-O-xylosyl-tectoridin in P. lobata flowers from eleven Chinese provinces

From: Quantitative analysis of two isoflavones in Pueraria lobata flowers from eleven Chinese provinces using high performance liquid chromatography

Province Extraction yield (%) Tectoridin (mg/g, n= 3) 6"-O-xylosyl-tectoridin (mg/g, n= 3)
Hebei 31.04 40.35 (0.88) 39.03 (0.77)
Shanxi 31.10 38.26 (0.90) 41.89 (0.74)
Shandong 33.78 26.46 (0.78) 30.90 (0.72)
Henan 32.02 43.28 (0.79) 38.43 (0.82)
Jiangsu 31.16 36.92 (0.83) 32.69 (0.43)
Anhui 33.32 30.50 (0.69) 30.63 (0.63)
Hubei 34.85 30.48 (0.60) 48.23 (0.95)
Jiangxi 34.24 10.00 (0.14) 18.61 (0.26)
Hunan 31.70 19.81 (0.44) 25.91 (0.31)
Guangxi 32.80 14.47 (0.26) 11.08 (0.25)
Guangdong 32.85 14.85 (0.28) 37.03 (1.05)
  1. Extraction yield is the ratio of the amount of dry extract actually obtained, to the amount of dry herb samples used for extraction.
  2. Data are expressed as mean (SD).
  3. SD: standard deviation
  4. Means comparison was performed according to one-way ANOVA with α = 0.05.
  5. P > 0.05 for comparing extraction yields.
  6. P < 0.05 for comparing two major isoflavones in samples from northern and southern provinces.