Hplc Analysis of Salicylic Derivatives from Natural Products
نویسندگان
چکیده
Salicylate-containing herbs have been used as analgesic and anti-inflammatory remedies from ancient times. In this work we performed a comparative HPLC study of salicylic derivatives in three natural products: Salicis cortex, Populi gemmae and Ulmariae folium. We have identified and measured by a new, easy and fast HPLC method both salicylic acid and salicin, before and after acid hydrolysis, in ethanolic extracts of vegetal products. Ulmariae folium is the richest source of salicylic acid (0.295-0.487%), while Populi gemmae and Salicis cortex contain higher quantities of salicylic alcohol derivatives (0.351-0.366% and respectively 0.199-0.315% salicin). Rezumat Plantele conţinând derivaţi salicilici au fost utilizate în medicina populară pentru proprietăţile analgezice şi antiinflamatoare încă din timpuri străvechi. În această lucrare am realizat un studiu HPLC comparativ al derivaţilor salicilici din trei produse naturale: Salicis cortex, Populi gemmae şi Ulmariae folium. Printr-o metodă nouă, simplă şi rapidă de cromatografie de lichide de înaltă performanţă am identificat şi am determinat concentraţia acidului salicilic şi salicinei, atât înainte, cât şi după hidroliza acidă a extractelor etanolice preparate din produsele vegetale. Ulmariae folium este cea mai bogată sursă de acid salicilic (0,295-0,487%), în timp ce Populi gemmae şi Salicis cortex conţin cantităţi mai mari de derivaţi ai alcoolului salicilic (0,351-0,366% şi respectiv 0,199-0,315% salicină).
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