Transfer rates of aflatoxins from herbal medicines to decoctions determined by an optimized high‐performance liquid chromatography with fluorescence detection method

Objectives This study aimed to explore the transfer rates of aflatoxins from several contaminated herbal medicines by fungi to their decoctions. Methods Five types of commonly used herbal medicines including Lilii Bulbus, Hordei Fructus Germinatus, Nelumbinis Semen, Polygalae Radix and Bombyx Batryt...

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Bibliographic Details
Published in:Journal of pharmacy and pharmacology 2018-02, Vol.70 (2), p.278-288
Main Authors: Nian, Yujiao, Wang, Haiwei, Ying, Guangyao, Yang, Meihua, Wang, Ze, Kong, Weijun, Yang, Shihai
Format: Article
Language:English
Subjects:
Aflatoxins
Boiling
Chromatography
decoctions
Fluorescence
Fungi
Herbal medicine
herbal medicines
High performance liquid chromatography
high‐performance liquid chromatography with fluorescence detection
Liquid chromatography
Photochemicals
Quantitative analysis
Security
transfer rate
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Summary:Objectives This study aimed to explore the transfer rates of aflatoxins from several contaminated herbal medicines by fungi to their decoctions. Methods Five types of commonly used herbal medicines including Lilii Bulbus, Hordei Fructus Germinatus, Nelumbinis Semen, Polygalae Radix and Bombyx Batryticatus were selected as the examples. Raw herbal medicine samples were treated by ultrasonication‐assisted extraction with 70% methanol and immunoaffinity column clean‐up, and the decoctions were prepared following the commonly used boiling method with water for 2 h. Then, the optimized high‐performance liquid chromatography with fluorescence detection (HPLC‐FLD) method was validated for the quantitative analysis of four aflatoxins (AFG2, AFG1, AFB2 and AFB1) after postcolumn photochemical derivatization, which was proved to be reliable and sensitive. Key findings Aflatoxins were detected to be transferred from the herbal medicines to decoctions with significantly different transfer rates in the five types of herbal medicines. Quietly high transfer rates of 7.26–115.36% for AFG2, 4.37–26.37% for AFB1 and 9.64–47.68% for AFB2 were obtained. AFB1 as the most toxic aflatoxin expressed the lowest transfer rate, but still exhibited high amount in the samples. Conclusions Therefore, the monitoring of aflatoxins in herbal medicines and their decoctions is in great urgency to ensure the security of consumers taking decoctions.
ISSN:0022-3573
2042-7158
DOI:10.1111/jphp.12856