A Monitoring of Aflatoxins in Commercial Herbs for Food and Medicine
2017
Kim, S., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kim, A., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Lee, H.K., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Lee, S.R., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Lee, H.J., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Ryu, H.J., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Lee, J.M., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Yu, I.S., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Jung, K., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea
This paper deals with the natural occurrence of total aflatoxins (B₁, B₂, G₁, and G₂) in commercial herbs for food and medicine. To monitor aflatoxins in commercial herbs for food and medicine not included in the specifications of Food Code, a total of 62 samples of 6 different herbs (Bombycis Corpus, Glycyrrhizae Radix et Rhizoma, Menthae Herba, Nelumbinis Semen, Polygalae Radix, Zizyphi Semen) were collected from Yangnyeong market in Seoul, Korea. The samples were treated by the immunoaffinity column clean-up method and quantified by high performance liquid chromatography (HPLC) with on-line post column photochemical derivatization (PHRED) and fluorescence detection (FLD). The analytical method for aflatoxins was validated by accuracy, precision and detection limits. The method showed recovery values in the 86.9~114.0% range and the values of percent coefficient of variaton (CV%) in the 0.9~9.8% range. The limits of detection (LOD) and quantitation (LOQ) in herb were ranged from 0.020 to 0.363 micro;g/kg and from 0.059 to 1.101 micro g/kg, respectively. Of 62 samples analyzed, 6 semens (the original form of 2 Nelumbinis Semen and 2 Zizyphi Semen, the powder of 1 Nelumbinis Semen and 1 Zizyphi Semen) were aflatoxin positive. Aflatoxins B₁ or B₂ were detected in all positive samples, and the presence of aflatoxins G₁ and G₂ were not detected. The amount of total aflatoxins (B₁, B₂, G₁, and G₂) in the powder and original form of Nelumbinis Semen and Zizyphi Semen were observed around ND~21.8 micro g/kg, which is not regulated presently in Korea. The 56 samples presented levels below the limits of detection and quantitation.
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