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KMID : 0616120210520040219
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Korean Journal of Pharmacognosy
2021 Volume.52 No. 4 p.219 ~ p.227
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Investigation and Risk Characterization on the Contamination Level of Herbal Medicines Without Legal Benzo(a)pyrene Specification
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Park Young-Ae
Ko Suk-Kyung
Jo Suk-Ju
Hwang In-Sook
Shin Gi-Young
Moon Kwang-Deog
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Abstract
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By analysing the benzo(a)pyrene concentration using HPLC-FLD and LC-MS/MS, pollution levels of herbal medicines without permitted benzo(a)pyrene specification were investigated. Average benzo(a)pyrene concentrations were 38.30, 37.46 and 21.22 μg/kg for Amomi Tsao-ko Fructus, Mume Fructus and Coptidis Rhizoma, respectively, which are 4 to 7 times higher than maximum permitted benzo(a)pyrene concentration of Rehmanniae Radix Preparata and Rehmanniae Radix, i.e. 5.0 μg/kg. Proportion of detected samples exceeding 5.0 μg/kg benzo(a)pyrene concentration was 22% for Cimicifugae Rhizoma and Scrophulariae Radix, 44% for Forsythiae Fructus, 67% for Mume Fructus, 100% for Amomi Tsao-ko Fructus and Coptidis Rhizoma, and collectively 29% (36 out of 125 samples) in average. In terms of risk characterization results, human exposure of benzo(a)pyrene were 7.96, 3.49 and 1.61 ng/kg b.w./day and the margin of exposure(MOE) were 1.25 × 104, 2.86 × 104 and 6.20 × 104 for Mume Fructus, Amomi Tsao-ko Fructus and Coptidis Rhizoma, respectively. MOE banding of those herbal medicines was categorized to ‘low concern’. However, considering that human exposure of benzo(a)pyrene for food is legislated to 1.4~2.5 ng/kg b.w./day, it was urgent to set up the guideline of benzo(a)pyrene in herbal medicines.
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KEYWORD
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Benzo(a)pyrene concentration, Risk characterization, Margin of exposure
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