Monitoring of Residual Sulfur Dioxide in Herbal Medicines Distributed at Domestic
2013
Lee, A.R., Korea Institute of Oriental medicine, daejeon, Republic of Korea | Jang, S., Korea Institute of Oriental medicine, daejeon, Republic of Korea | Kim, T.H., Korea Institute of Oriental medicine, daejeon, Republic of Korea | Lee, A.Y., Korea Institute of Oriental medicine, daejeon, Republic of Korea | Choi, G.Y., Korea Institute of Oriental medicine, daejeon, Republic of Korea | Kim, H.K., Korea Institute of Oriental medicine, daejeon, Republic of Korea
This study was conducted to investigate the residual contents of sulfur dioxide (SO2) in commercial medicinal herbs in Korea in 2012. Among a total of 136 samples of 16 different kinds of herbs, 86 samples (15 Kinds) were domestic, and 50 samples (14 Kinds) were imported. Sulfur dioxide in the samples was measured by a modified Monier-Williams method. Of the 136 samples, 17 samples (12.5%, 6 Kinds) failed to meet the regulations for sulfur dioxide residues of KFDA in medicinal herbs. Among 17 unsuitable samples (8.1%, 3 Kinds) were domestic, and 10 samples (20.0%, 6 Kinds) were imported. The highest amount of sulfur dioxide was 3,167.94mg/kg (Lycii Fructus) in the domestic samples. The detection frequency of sulfur dioxide by medicinal herb parts used, Rhizoma 25.7%, Flos 20.0%, Cortex 12.5%, Radix 15.3%, Fructus 7.6%, p-value 0.011. This results will be used as a basic data for the future legislation on the quality estimation and safety of medicinal herbs.
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