Certification of a pure reference material for the ginsenoside Rg
1 |
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| Authors: | Dal-Ho Kim Jin-Kyu Chang Hyun-Joo Sohn Byong-Gu Cho Sung-Ryong Ko Kil-Bong Nho Dae-Sig Jang Sang-Myung Lee |
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| Institution: | (1) Division of Metrology for Quality of Life, Center for Analytical Chemistry, Korea Research Institute of Standards and Science (KRISS), 1 Doryong-dong, Yuseong-gu, Daejeon, 305-340, Republic of Korea;(2) KT&G Central Research Institute, 302 Shinseong-dong, Yuseong-gu, Daejeon, 305-805, Republic of Korea |
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| Abstract: | A pure certified reference material (CRM) for the ginsenoside Rg
1
was prepared from roots of Panax ginseng by extraction and separation of ginsenosides. The mass fraction of the main component (ginsenoside Rg
1
) in the reference material was determined and its uncertainty was assessed from various input quantities, such as organic
impurities, residual moisture, residual solvent, ash, and insoluble matters. To measure these input quantities, HPLC/CAD,
Karl Fischer (KF) coulometry, gravimetry, and GC/FID were used. Homogeneity and long-term stability of the reference material
are discussed. The certified mass fraction of Rg
1
in the reference material is 0.974 ± 0.006 (k = 2) with a shelf life of 1 year. |
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