Quantitative analysis of ginger components in commercial products using liquid chromatography with electrochemical array detection |
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| Authors: | Shao Xi Lv Lishuang Parks Tiffany Wu Hou Ho Chi-Tang Sang Shengmin |
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| Institution: | Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural and Technical State University, North Carolina Research Campus, 500 Laureate Way, Kannapolis, North Carolina 28081, United States. |
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| Abstract: | For the first time, a sensitive reversed-phase HPLC electrochemical array method has been developed for the quantitative analysis of 8 major ginger components (6]-, 8]-, and 10]-gingerol, 6]-, 8]-, and 10]-shogaol, 6]-paradol, and 1]-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. |
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