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- Title
Authenticity analyses of Rhizoma Paridis using barcoding coupled with high resolution melting (Bar-HRM) analysis to control its quality for medicinal plant product.
- Authors
Duan, Bao-Zhong; Wang, Ya-Ping; Fang, Hai-Lan; Xiong, Chao; Li, Xi-Wen; Wang, Ping; Chen, Shi-Lin
- Abstract
Background: Rhizoma Paridis (Chonglou) is a commonly used and precious traditional Chinese medicine. <italic>Paris polyphylla</italic> Smith var. <italic>yunnanensis</italic> (Franch.) Hand. -Mazz. and <italic>Paris polyphylla</italic> Smith var<italic>. chinensis</italic> (Franch.) Hara are the two main sources of Chonglou under the monograph of Rhizoma Paridis in Chinese Pharmacopoeia. In the local marketplace, however, this medicine is prone to be accidentally contaminated, deliberately substituted or admixed with other species that are similar to Rhizoma Paridis in shape and color. Consequently, these adulterations might compromise quality control and result in considerable health concerns for consumers. This study aims to develop a rapid and sensitive method for accurate identification of Rhizoma Paridis and its common adulterants. Methods: DNA barcoding coupled with high resolution melting analysis was applied in this research to distinguish Rhizoma Paridis from its adulteration. The internal transcribed spacer 2 (ITS2) barcode was selected for HRM analysis to produce standard melting profile of the selected species. DNA of the tested herbal medicines was isolated and their melting profiles were generated and compared with the standard melting profile of <italic>P. polyphylla</italic> var. <italic>chinensis</italic>. Results: The results indicate that the ITS2 molecular regions coupled with HRM analysis can effectively differentiate nine herbal species, including two authentic origins of Chonglou and their seven common adulterants. Ten herbal medicines labeled “Chonglou” obtained from a local market were collected and identified with our methods, and their sequence information was analyzed to validate the accuracy of HRM analysis. Conclusions: DNA barcoding coupled with HRM analysis is a accurate, reliable, rapid, cost-effective and robust tool, which could contribute to the quality control of Rhizoma Paridis in the supply chain of the natural health product industry (NHP).
- Subjects
BAR codes; BIOLOGICAL products; DNA; DRUG adulteration; GENETIC techniques; HERBAL medicine; MEDICINAL plants; QUALITY control; RESEARCH evaluation
- Publication
Chinese Medicine, 2018, Vol 13, p1
- ISSN
1749-8546
- Publication type
Article
- DOI
10.1186/s13020-018-0162-4