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http://dx.doi.org/10.3746/jkfn.2012.41.11.1554

Method Development of Ellagic Acid as Marker Compound for Standardization of Gochang Bokbunja (Rubus coreanus Miquel) as Functional Ingredient  

Kim, Yunjeong (Clinical Trial Center and 2Biomedical Research Institute of Chonbuk National University Hospital)
Han, Song-Hee (Clinical Trial Center and 2Biomedical Research Institute of Chonbuk National University Hospital)
Jeon, Ji-Yeong (Clinical Trial Center and 2Biomedical Research Institute of Chonbuk National University Hospital)
Hwang, Minho (Clinical Trial Center and 2Biomedical Research Institute of Chonbuk National University Hospital)
Im, Yong-Jin (Clinical Trial Center and 2Biomedical Research Institute of Chonbuk National University Hospital)
Chae, Soo-Wan (Clinical Trial Center and 2Biomedical Research Institute of Chonbuk National University Hospital)
Kim, Min-Gul (Clinical Trial Center and 2Biomedical Research Institute of Chonbuk National University Hospital)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.41, no.11, 2012 , pp. 1554-1558 More about this Journal
Abstract
Method development and validation of ellagic acid for the standardization of Gochang Bokbunja as a functional ingredient and health food were accomplished. A Symmetry$^{(R)}$ (C18, $4.6{\times}250mm$, $5.0{\mu}m$) column was used with a gradient elution system of 1% formic acid in water and acetonitrile. This method was validated according to specificity, linearity, accuracy, precision test, and recovery test. Specificity was confirmed with identical retention time, and calibration curves of ellagic acid showed good linear regression ($R^2$ >0.9996). Relative standard deviations (RSD) of data from the intra- and inter-day experiments were less than 2.28% and 2.84%, except in the low limit of quality control (LLOQ, $1{\mu}g/mL$) sample. The results of the recovery test were from 89.17% to 97.92% with RSD values from 0.05 to 0.14%. Therefore, we performed analysis of ellagic acid as a marker compound in Gochang Bokbunja extracts. The amount of ellagic acid in Gochang Bukbunja was about $1.918{\mu}g/mg$ (0.192%) in the three times analysis, and RSD was less than 2.36% by the validated method. These results suggest that the developed HPLC method is simple, efficient, and could contribute to the quality control of Gochang Bokbunja extract as a functional ingredient.
Keywords
ellagic acid; marker compound; Bokbunja; validation; functional food;
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Times Cited By KSCI : 2  (Citation Analysis)
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