Molecular, Chemical and Microscopic Analysis of Medicinal Plant (Cymbopogon distans) from Its Adulterants
Journal of Diseases and Medicinal Plants
Volume 4, Issue 2, April 2018, Pages: 35-47
Received: Mar. 28, 2018; Accepted: Apr. 27, 2018; Published: May 21, 2018
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Authors
Diana Kavidia Muyembe, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
Dou Rong Kun, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
Song Zhilei, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
Fang Jin, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
Xue Yuan, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
Piao Yang, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
Zou Jinjing, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
Mao Can Quan, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
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Abstract
Morphological resemblance among Cymbopogon distans species and their adulterants which are procured from different markets in the form of dried or fresh plant tissues represents a serious problem for quality and safety of medicinal plants, as it supports frauds for substitution. In order to assure the quality control of C. distans species, DNA barcode, microscopic identification and High Performance liquid chromatography (HPLC) fingerprint were synergistically used to discriminate C. distans from its adulterants. In this work, the internal transcribed spacer 2 (ITS2) was chosen for distinguishing C. distans from their usual adulterants from 5 provinces of China. Sequences were obtained after removal of the 5.8S and 28S sections. A multiple sequence alignment was finalized. Results exhibited that ITS2 performed well, with 100% of genera being accurately distinguished. Additionally, finding indicates that the upper epidermis in leaf of C. distans was composed of one layer of wide elongated cells called Bulliform cells whereas in C. distans the upper epidermis consist of one layer cell, thus these feactures are very important for the anatomy identification. The HPLC fingerprint method was also developed, the similarities of 6 batches of C. distans samples were all more than 0.93, indicating that the samples from different geographical origins shared similar HPLC fingerprints. And the similarities between C. distans, C. citratus, C. flexuosus and Imperata cylindrica were all less than 0.93, suggesting that there was significance difference between C. distans and its adulterants. Finally, it was concluded that the DNA barcode, HPLC fingerprint and microscopic methods could effectively authenticate the quality of C. distans from their adulterants and can provide accurate and reliable information to tackle the complex quality issue of C. distans in markets. This is the first report of detailed analysis of the C. distans for effective quality and safety.
Keywords
Internal Transcribed Spacer (ITS2), DNA barcode, Cymbopogon distans, High Performance Liquid Chromatography (HPLC)
To cite this article
Diana Kavidia Muyembe, Dou Rong Kun, Song Zhilei, Fang Jin, Xue Yuan, Piao Yang, Zou Jinjing, Mao Can Quan, Molecular, Chemical and Microscopic Analysis of Medicinal Plant (Cymbopogon distans) from Its Adulterants, Journal of Diseases and Medicinal Plants. Vol. 4, No. 2, 2018, pp. 35-47. doi: 10.11648/j.jdmp.20180402.11
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Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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