The lipids ofHibiscus seeds

The composition and amounts of various classes of lipids of the seeds of Hibiscus sp. have been investigated. Seven classes of neutral lipids, five of phospholipids, and five of glycolipids have been identified and their fatty-acid and triglyceride compositions have been established. The presence has been shown of 16 main types of triacylglycerols and 25 types of epoxyacyldiacylglycerols. An epoxy-18.0 and an epoxy-18:1 acid in a combined amount of 1.4% have been detected among the acids of the free lipids, together with 8.1% of cyclopropenoid acids.Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 40–44, January–February, 1995. Original article submitted October 24, 1994.     

Lipids of the vegetative and generative organs ofHibiscus sp.

The lipids of the leaves, stems, and roots ofHibiscus sp. have been studied. Their fatty acid compositions have been determined. The greatest amount of unsaturated fatty acids was present in the glycolipids of the leaves and the stems. More than 25% of low-molecular-mass C₁₀-C₁₂ fatty acids have been found in the neutral lipids of the roots.Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 705–708, September–October, 1996. Original article submitted March 11, 1996.     

Oxidized lipids of cotton-plant leaves

Free fatty acids and diacylglycerols containing them have been isolated from the leaves of a cotton plant of a wilt-resistant variety. The composition and structures of the hydroxylipids have been determined by a combination of the methods of IRS, UVS, GLC, and the mass spectrometry of TMS derivatives, and changes in the composition of the hydroxy acids taking place on artificial infection of the plant with the fungusVerticillium dahliae Kleb. have been revealed.Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 31–35, January–February, 1992.     

Epicuticular and intracellular lipids ofHippophae rhamnoides leaves

It has been established that the bulk of the epicuticular lipids of common sea buckthorn leaves is represented by the class of higher aliphatic esters, while higher fatty acids, other acids of the aliphatic series, and cyclic acids of triterpene nature have also been detected. The intracellular lipids consist mainly of esters of various alcohols with higher fatty acids, while the same alcohols are found in the form of acetates and in the free state. In addition, the composition of the intracellular lipids includes hydrocarbons, triacylglycerols, free fatty acids, carotenoids, aldehydes, and acids of triterpene nature.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 89 14 75. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 790–798, November-December, 1995. Original article submitted January 2, 1995.     

Dynamics of the accumulation of the flavan compounds ofHibiscus cannabinus

The amounts and compositions of the flavan compounds in various organs of kenaf according to the vegetation periods have been studied. It has been established that the maximum amounts of flavan substances are formed in the phloem and roots in the vegetation period.     

Lipids of the leaves ofElaeagnus angustifolia. I. Surface lipids

This paper reports the composition of the lipids of the surface layer of the leaves ofElaeagnus angustifolia L. (Elaeagnaceae).