| Abstract: | Summary The diglyceride and monoacetyldiglyceride derivatives of the phosphatidylcholines of the seed kernels of the cotton plant of variety S-6029 have been separated into individual subfractions in a thin layer of silica gel impregnated with silver nitrate.The total fatty-acid compositions of the individual subfractions and the position distributions of the fatty acids in the glyceride moiety of the molecules have been determined, and on this basis the molecular compositions of the phosphatidylcholines have been established: for the DGs 46 species and for the MADGs 43 species. It has been shown that in the cotton plant two types of molecular species are synthesized (mainly to the extent of 85%): Disaturateds and monosaturated-monosaturateds, the disaturateds being characterized by a greater diversity of species but a low amount.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 324–330, May–June, 1977. |
