Classification of Cannabis Cultivars Marketed in Canada for Medical Purposes by Quantification of Cannabinoids and Terpenes Using HPLC-DAD and GC-MS
- *Corresponding Author:
- Jie Chen
Biomedical Engineering Department, University of Alberta, Edmonton, Alberta, Canada
E-mail: [email protected]
Received date: February 10, 2017; Accepted date: February 17, 2017; Published date: February 20, 2017
Citation: Jin D, Jin S, Yu Y, Lee C, Chen J (2017) Classification of Cannabis Cultivars Marketed in Canada for Medical Purposes by Quantification of Cannabinoids and Terpenes Using HPLC-DAD and GC-MS. J Anal Bioanal Tech 8:349. doi: 10.4172/2155-9872.1000349
Copyright: © 2017 Jin D, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
For over a century, research on cannabis has been hampered by its legal status as a narcotic. The recent legalization of cannabis for medical purposes in North America requires rigorous standardization of its phytochemical composition in the interest of consumer safety and medicinal efficacy. To utilize medicinal cannabis as a predictable medicine, it is crucial to classify hundreds of cultivars with respect to dozens of therapeutic cannabinoids and terpenes, as opposed to the current industrial or forensic classifications that only consider the primary cannabinoids tetrahydrocannabinol (THC) and cannabidiol (CBD). We have recently developed and validated analytical methods using high-pressure liquid chromatography (HPLC-DAD) to quantify cannabinoids and gas chromatography with mass spectroscopy (GC-MS) to quantify terpenes in cannabis raw material currently marketed in Canada. We classified 32 cannabis samples from two licensed producers into four clusters based on the content of 10 cannabinoids and 14 terpenes. The classification results were confirmed by cluster analysis and principal component analysis in tandem, which were distinct from those using only THC and CBD. Cannabis classification using a full spectrum of compounds will more closely meet the practical needs of cannabis applications in clinical research, insdustrial production, and patients’ self-production in Canada. As such, this holistic classification methodology will contribute to the standardization of commercially-available cannabis cultivars in support of a continuously growing market.