FLAVONOID COMPOSITION OF PURPLE CONEFLOWER (ECHINACEA PURPUREA L.) SEEDS AND THEIR MEDICAL RELEVANCE
Keywords:
Echinacea purpurea, flavonoids, polyphenols, kaempferol, salicylic acid, HPLC, C18 column, extraction, antioxidant activity.Abstract
This study focuses on determining the chemical composition and quantitative profile of flavonoids present in the seeds of Purple Coneflower (Echinacea purpurea L.) using High-Performance Liquid Chromatography (HPLC, LC-40 Nexera Lite, Shimadzu). Quercetin, rutin, gallic acid, apigenin, kaempferol, and salicylic acid standards were used for the analysis, while extraction was carried out in an ultrasonic bath using 96% ethanol. According to the results, salicylic acid (464.528 mg/100 g) and kaempferol (54.033 mg/100 g) were identified as the most abundant compounds in the seeds. These polyphenols represent key metabolites responsible for the plant’s antioxidant and anti-inflammatory activities, confirming their significant pharmacological and technological relevance.
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