Kinetics of solanidine hydrolytic extraction from potato (Solanum tuberosum L) haulm solid-liquid systems

Dried and milled haulm of potato (Solanum tuberosum L) was used as the solid phase. An ethanolic solution of hydrochloric acid mixed with chloroform in different volume ratios was the liquid phase. The aim of paper was to unite in a single step the processes of glycoalkaloids extraction from haulm, their hydrolysis to solanidine and the extraction of solanidine. This could make the procedure of obtaining solanidine faster and simpler. The best degree of solanidine hydrolytic extraction of 84.5% was achieved using 10% w/v hydrochloric acid in 96% vol. ethanol mixed with chloroform in a volume ratio of 2:3, after 120 min of hydrolytic extraction. U radu je ispitana kinetika hidroliticke ekstrakcije solanidina u dvofaznim cvrsto- tecnim sistemima. Suvi, samleveni nadzemni deo krompira (Solanum tuberosum L) koriscen je kao cvrsta faza, a etanolni rastvor hlorovodnicne kiseline pomesan sa hloroformom u razlicitim zapreminskim odnosima kao tecna faza. Cilj rada je bio da se proces ekstrakcije glikoalkaloida iz biljnog materijala, njihova hidroliza do solanidina i ekstrakcija solanidina tecnom fazom objedini u jedan proces. Na ovaj nacin postupak dobijanja solanidina je jednostavniji, brzi i ekonomicniji. Najbolji stepen hidroliticke ekstrakcije solanidina od 84,5%, ostvaren je primenom rastvora 10 % m/v hlorovodonicne kiseline u 96 vol.% etanolu pomesanog sa hloroformom u zapreminskom odnosu 2:3 posle 120 min.