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Dual-index evaluation of character changes in Panax ginseng C. A. Mey stored in different conditions.

Panax ginseng C. A. Mey has been used as a traditional medicine and functional food in Asia for thousands of years for its improvement of human immunity and metabolism and its antitumor and antifatigue activities. This study reports the impact of storage conditions and storage period on the quality of P. ginseng. The contents of four major ginsenosides in P. ginseng and phosphorylation activities of Akt of ginseng extracts were affected by both storage conditions and storage period. In contrast, the ATP generation capacity of ginseng extracts was affected by storage conditions, but not by storage period. The results showed that the quality of P. ginseng could be well maintained at a relative humidity between 70% and 90%, and dry conditions might decrease the quality of P. ginseng. Through dual-index evaluation, the present study extended our knowledge on the changes of ginsenosides and bioactivities in P. ginseng with respect to different storage conditions and storage periods.