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      Rapid identification of Dendrobium officinale using Loop-Mediated Isothermal Amplification (LAMP) method

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          Abstract

          Dendrobium officinale is not only an ornamental plant, but also a valuable medicinal herb that is widely used in traditional Chinese medicine. However, distinguishing D. officinale from other Dendrobium species is usually a difficult task. In this study, we developed a rapid identification protocol for D. officinale using the loop-mediated isothermal amplification (LAMP) method. A set of primers were specifically designed to detect a modified internal transcribed spacer region of D. officinale at 65 °C within 40 min after adding SYBR® Green I, which was used for the detection of D. officinale. Unlike commonly used adulterants, reaction mixtures containing D. officinale DNA changed from orange to green, and this color change was easily observed with the naked eye. Thus, this methodology can be used to accurately differentiate D. officinale from other Dendrobium species, is quick as all D. officinale samples were amplified within 40 min, and specific as samples of the adulterants were not amplified. The specificity of this LAMP-based method was confirmed by testing 17 samples of D. officinale and 32 adulterant samples from other Dendrobium species. This LAMP-based rapid identification method does not require expensive equipment or specialized techniques and can be used in field surveys for accurate and fast on-site identification.

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          Author and article information

          Journal
          CJNM
          Chinese Journal of Natural Medicines
          Elsevier
          1875-5364
          20 May 2019
          : 17
          : 5
          : 337-345
          Affiliations
          1 School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
          2 Faculty of Chinese Medicine, Macau University of Science and Technology, Macau, China
          3 State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
          4 School of Nursing, Guangdong Food and Drug Vocational College, Guangzhou 510520, China
          Author notes
          *Corresponding author: WU Wen-Ru, Tel: 86-20-39358296, E-mail: wuwenru@ 123456gzucm.edu.cn

          These authors have no conflict of interest to declare.

          Article
          S1875-5364(19)30039-1
          10.1016/S1875-5364(19)30039-1
          Copyright © 2019 China Pharmaceutical University. Published by Elsevier B.V. All rights reserved.
          Funding
          Funded by: Opening Project of State Key Laboratory of Quality Research in Chinese Medicine (Macau University of Science and Technology)
          Award ID: MUST-SKL-2016-07
          Funded by: National Training Program of Innovation and En-trepreneurship for Undergraduates
          Award ID: 201710572024
          This work was supported by the Opening Project of State Key Laboratory of Quality Research in Chinese Medicine (Macau University of Science and Technology) (No. MUST-SKL-2016-07) and the National Training Program of Innovation and En-trepreneurship for Undergraduates (No. 201710572024).
          Categories
          Research articles

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