Chemotaxonomic analysis of Astragalus caprinus (Fabaceae) based on the flavonic patterns |
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| Institution: | 1. Laboratoire de Phytochimie, Université Lyon-1, 43 Bd 11 novembre, 69622 Villeurbanne, France;2. Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan;3. Laboratoire de Pharmacognosie, Faculté de Pharmacie, Monastir, Tunisia;1. Department of Applied Life Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan;2. Green Center, Fuji Steel Industry, Tochigi 328-0204, Japan;3. Department of Life Science, Faculty of Science, Okayama University of Science, Okayama 700-0005, Japan;4. Department of Chemistry, Faculty of Education, Utsunomiya University, Tochigi 321-0943, Japan;5. Department of Applied Biological Chemistry, Faculty of Agriculture, Utsunomiya University, Tochigi 321-0943, Japan;1. Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, Gansu, China;2. School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China;3. State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, Gansu, China;4. Marine and Fisheries Agency of Changyi, Changyi, Shandong 261300, China;1. Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Building 73, Saarland University, D-66421 Homburg, Germany;2. Chair of Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner-Straße 34, D-85354 Freising, Germany;1. College of Pharmacy, Shanxi Medical University, Taiyuan 030001, China;2. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China;1. Department of Pharmaceutical Engineering, Medical College, Guangxi University, Nanning 530004, China;2. School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China |
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| Abstract: | In previous work, 14 flavonol glycosides were characterised in the leaves of Astragalus caprinus, an endemic Fabaceae, widely distributed in North West Africa. These compounds included quercetin and kaempferol derivatives, glycosylated by two, three or four sugars with an aliphatic or aromatic acyl moiety. In this paper, we describe the flavonoid patterns of 404 individual plants investigated by HPLC and subjecting the resulting data to cluster analysis. This analysis highlighted four chemotypes associated with a high accumulation of a kaempferol triglycoside, a kaempferol tetraglycoside with its acylated derivatives, two quercetin tetraglycoside derivatives and methylated diglycoside derivatives, respectively. A discriminant analysis validated the chemotaxonomic value of the four chemical polymorphisms. These chemotypes were more or less abundant according to geographical sites which corresponded to different climatic conditions. |
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