Lipids of the fruit of Ficus carica

By chromatographic methods, about 30 groups of various lipid compounds belonging to the classes of neutral lipids, glycolipids, and phospholipids have been identified from the fruit of the fig tree. The main groups are triacylglycerols, free and esterified sterols, mono- and digalactosyldiglycerides, ceramide oligosides, cerebrosides, esterified sterol glycosides, and phosphatidylglycerols. In the fatty acid composition, linoleic, linolenic, oleic, and palmitic acids predominated (>90%).A. V. Bogatskii Physicochemical Institute, Academy of Sciences of the Ukrainian SSR, Odessa. Lomonosov Technological Institute of the Food Industry, Odessa. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 423–427, July–August, 1986.     

Lipids of the fruit of Ficus carica

By chromatographic methods, about 30 groups of various lipid compounds belonging to the classes of neutral lipids, glycolipids, and phospholipids have been identified from the fruit of the fig tree. The main groups are triacylglycerols, free and esterified sterols, mono- and digalactosyldiglycerides, ceramide oligosides, cerebrosides, esterified sterol glycosides, and phosphatidylglycerols. In the fatty acid composition, linoleic, linolenic, oleic, and palmitic acids predominated (>90%).     

Ionization energies of Ni(II) and Cu(II) bis-chelates with sulphur-containing ligands

Quantum-chemical calculations on Ni(II) and Cu(II) dithiophosphates and dimethyldithiocarbaminates, Cu(II)difluorodithiophosphate and their cations have been done using the MOLCAO method with semiempirical approximation CNDO/2. Ionization potentials calculated in accordance with Koopmans' theorem and as differences between total energies of neutral molecules and cations are discussed. It was found that MO rescaling observed under ionization is more essential for Ni(II) than for Cu(II) compounds. In Ni(II) chelates the orbital energies of neutral molecules correlate linearly with the experimental ionization potentials.     

Anticorrosive properties of N-acetylmethylpyridinium bromides

The inhibiting action of N-acetylmethylpyridinium bromides on the corrosion of low-carbon steel in a 3 M sulfuric acid solution at 20, 40, 60, and 80°C was studied. The mechanism of their protective action was examined using electrochemical methods. Compounds exhibiting high anticorrosive properties at elevated temperatures were found.     

Absolute Instability of FCC Lattice of Rare-Gas Crystals under Pressure

Physics of the Solid State - On the basis of ab initio calculations of the phonon frequencies of compressed rare-gas crystals in the model of deformable and polarizable atoms, dynamic instability...     

Characteristics of the pigments from anthocyan-containing food plants, raw material for production of bioflavonoid dyes

Data are presented on the composition of anthocyans of the fruits and pulp of the food plants bilberry (Vaccinium myrtillis L), high-bush cranberry (Viburnum opulus L.), elderberry (Sambucus nigra L.), cherry (Cerasus vulgaris Mill.), crowberry (Empetrum nigrum L.), cranberry (Oxycoccus palustris Pers.), currant (Ribes nigrum L.), and mulberry (Morus nigra L.) growing in the Ukraine. The anthocyan pigments differ qualitatively and quantitatively owing to genetic peculiarities in the different species of fruits and the localization of the pigments in them.Odessa State Academy of Food Technology, fax (0482) 25 32 84. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 118–120, March–April, 2000.     

Structure of turbulent viscosity in flow close to a rough surface

A formula for turbulent viscosity which allows a simple analytic expression to be obtained for the distribution of the averaged velocity of turbulent liquid flow at a rough surface is proposed.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 2, pp. 167–170, March–April, 1976.