ANALYSIS OF SECONDARY METABOLITES IN LEAVES AND FRUITS OF SORBUS AUCUPARIA SUBSP. SIBIRICA USING GC-MS: CHEMOTAXONOMIC ASPECTS
UDC 581.192; 543.544
Abstract
This study focuses on the investigation of lipophilic metabolites found in various organs of Sorbus aucuparia subsp. sibirica (leaves, exocarp, and seeds) using gas chromatography–mass spectrometry (GC-MS). The research aims to identify inter-organ differences in metabolic profiles and expand the understanding of the species’ metabolic plasticity. In leaf extracts, 72 compounds were identified, including saturated, unsaturated, and hydroxy-substituted fatty acids, alcohols, alkanes, and steroids. In the exocarp and seeds, 39 and 50 compounds belonging to the same classes were identified. Key compounds included linolenic acid, palmitic acid, and nonacosan-10-ol (ginnol), which plays a vital role in the protective functions of epicuticular waxes and demonstrates promising antibacterial and antioxidant properties. Principal component analysis (PCA) confirmed the presence of inter-organ differences, particularly pronounced in leaves, where local chemotypes were identified. These findings highlight the complex adaptive mechanisms and high metabolic plasticity of S. aucuparia subsp. sibirica. The results offer potential applications in pharmacognosy, chemotaxonomy, and the standardization of plant-derived raw materials.
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