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. Author manuscript; available in PMC: 2016 May 26.
Published in final edited form as: J AOAC Int. 2015 Nov-Dec;98(6):1483–1490. doi: 10.5740/jaoacint.15-112

Table 1.

Comparison of quantitative results for the analysis of SRM 3238 based on developed extraction and chromatography methods, using absorbance and PB/EI-MS detection.

LC-UV Determinations
Daidzin Glycitin Genistin Daidzein Genistein
Mass Fraction (mg/g) 13.793 3.581 12.896 0.559 0.123
SD
(n=3)1 		0.0453 0.0079 0.0332 0.0015 0.0016
CV 0.0033 0.0022 0.0026 0.0027 0.0129
LC-MS Determinations
Daidzin Glycitin Genistin Daidzein Genistein
Mass Fraction (mg/g) 14.012 3.913 12.684 0.310 0.104
SD
(n=3)1 		0.1440 0.0319 0.1290 0.0693 0.0840
CV 0.0103 0.0082 0.0102 0.2234 0.8073
1

triplicate injections for a single extraction