ShaoX,LvL,ParksT,WuH,HoCT,SangS.Quantitative analysis of ginger components in commercial products using liquid chromatography with electrochemical array detection. Journal of Agricultural and Food Chemistry. 2010 Dec 22;58(24):12608-14. Epub 2010 Nov 23.
For the first time, a sensitive reversed-phase HPLC electrochemical array method has been developed for the quantitative analysis of 8 major ginger components (-, -, and -gingerol, -, -, and -shogaol, -paradol, and -dehydrogingerdione) in 11 ginger-containing commercial products. This method was valid with unrivaled sensitivity as low as 7.3-20.2 pg of limit of detection and a range of 14.5-40.4 pg for the limit of quantification. The levels of 8 ginger components in 11 different commercial products were quantified by use of this method. The results found that both levels and ratios among the 8 compounds vary greatly in commercial products.