Abstract
A qualitative and quantitative study of the glycosidal content of the different organs
and parts of Citrullus colocyntbis Schrad. were undertaken. Qualitative study revealed the presence af α-elaterm 2–D–glucopyranoside
and its aglycone in all organs; cucurbitacin B, I, and L (both free and glycosidal
forms) in stems, leaves, and fruits. A suggested procedure for the estimation of α-elaterin
glycoside was also given. The highest percentage of the glycoside (0.22) was found
in the pulp of the fruits and the lowest percentage in the roots (0.049). The seeds,
stems, leaves and rind contain 0.18,0.17, 0.15, and 0.08 percent respectively.
The effect of drying on α-elaterin (glycoside) content of the pulp was also carried
out. The obtained results showed that the best glycosidal content was obtained by
cutting the fruits into 8 equal parts and drying in sun (30–35° C).
