Changes in Contents of Ginsenosides and Phenolic Compounds in Wild Ginseng Leaves during Tea Processing

Seog, Ho-Moon;Jung, Chang-Hwa;Choi, In-Wook;Choi, Hee-Don

  • Published : 20040800

Abstract

Changes in ginsenoside and total phenolic contents of wild ginseng leaves and their tea products were investigated according to various roasting conditions. Total content of ginsenosides, in wild ginseng fresh leaves was 14.23%. Ginsenoside contents, although slightly decreased with increasing repetition of roasting, were relatively heat-stable. $Rg_{1}$, Re, and Rd were identified as major ginsenosides in leaves. Ratios of panaxadiol ginsenoside/panaxatriol ginsenoside were in the range of 0.70-0.75. Total phenolics in fresh ginseng leaves were 856.64 mg%, whereas decreased to 690.84 mg% with repetition of roasting up to 13 times, which indicate excessive roasting of ginseng leaves could cause reduction in total phenolic contents.

Keywords

References

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