Abstract
Glycoalkaloids were extracted from plant material of Solanum sodomaeum L. High-performance liquid chromatographic studies indicated that several glycoalkaloids
were present. The sugar moiety of the glycoalkaloids consisted of a mixture of glucose,
rhamnose, and galactose. Mass spectral analyses showed that all the glycoalkaloids
contained solasodine. Solasonine and solamargine were identified and were present
at similar concentrations, representing 67% of the total extracted glycoalkaloids.
The extraction yield of the glycoalkaloids from plant material, expressed as g glycoalkaloid/100
g wet weight, was highest for ripe fruit (0.83 ± 0.11), followed by unripe fruit (0.45
± 0.08), leaves (0.14 ± 0.01), and stems (< 0.04) with progressively decreasing yields.
Over a twofold difference in glycoalkaloid yield was observed when ripe fruit of two
different districts was extracted.
