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

Nikolić Nada Č. (Faculty of Technology, University of Niš, Bulevar oslobođenja 124, 16000 Leskovac, Yugoslavia)
Stanković Mihajlo Z. (Faculty of Technology, University of Niš, Bulevar oslobođenja 124, 16000 Leskovac, Yugoslavia)

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.

Keywords: potato, haulm, glycoalkaloids, hydrolysis, solanidine, extraction.