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Химия растительного сырья - страница №57/57



Sisoeva M.A., Sisoeva E.V., Habibrahmanova V.R., Gamaiourova V.S., Kudryavtseva L.A. Research of the colloidal chaga water extracts. X. Proteolysis of chaga water extracts by ferments of the gastrointestinal tract

It was developed the method of undertaking the proteolysis of chaga water extract by ferments of the gastrointestinal tract. The progression of the proteolysis of chaga water extract by ferments of the gastrointestinal tract was validated, qualitative and quantitative, by on spending of substrate and accumulation products of the reaction and by change of micelles sizes of polyphenoloxycarbon complex (PPC) in hydrolysats with use of different physico-chemical methods. There was shown the possibility of proteolysis chaga water extract by ferments of the gastrointestinal tract in vivo.



Schekuschkina N.W., Newsorova T.W., Efremov A.A. Fractional composition of Scots pine ethereal oil

The component composition of ethereal oil of Scots pine needle, picked in September, has been studied by the chromato- mass- spectrometry method. It was shown that the content of monoterpenes makes not more than 50% and oil composition changes as it is extracted: the amount of the volatiles reduces but the amount of heavily volatilizing components increases with the distillation time.



XiaoPing Rao, ZhanQian Song, Kushnir S.R., Radbil' A.B., Radbil' B.A. Synthesis and bactericidal activity of amides of dehydroabietic acid

10 samples amides on a basis dehydroabietic acid (DAA) are synthesized. Their physical and chemical properties and bactericidal activity to some microorganisms are determined. It is shown, that investigated DAA amides possess the appreciable bactericidal activity exceeding, basically, activity initial DAA. It is established, that bactericidal activity essentially depends on structure amides and the nature used for synthesis amine.



Kogai T.I., Kuznetsov B.N. BETULONIC ACID REDUCTION TO BETULINIC ACID AT CONDITIONS OF THE PHASE TRANSFER CATALYSIS

The present invention relates to improved methods of betulinic acid production from betulonic acid. The betulonic acid has been reduced to betulinic acid with sodium borohydride in the water - organic solvent -quaternary alkyl ammonium salt admixture at room temperature. The optimum ratio between the amounts of betulonic acid – sodium borohydride – quaternary alkyl ammonium salts has been selected. The most affective carries of borohydride-ion transfer from water to organic phase and suitable organic solvents supply the yield of betulonic acid 98,5–99,3%.


Arhipova А.V., Malkova K.V., Sokolova T.N., Kartashov V.R. synthesis of α-(1,7,7-TRIMETHYL­NORBORNYL)-β-DIMETHYLCARBAMID BY the REACTION OF CAMPHENE WITH DIMETHYLCYANAMIDE IN THE PRESENCE OF molybdenophosphoric ACID

In the present work, we studied the possibility of the Ritter reaction to synthesize of various N-substituted amides. This reaction has been usually catalyzed by strong mineral acids such as H2SO4, PhSO3H, MeSO3H, HSO3F, anhydrous HF and some others. For instance, the reaction of camphene with benzyl thiocyanate used in excess in the presence of H3PW12O40 and H4SiW12O40 as catalyst gave the new compound - N-(1,7,7-trimethylnorbornyl)-benzylthiocarbamate.

The heteropoly acids are effective catalysts because they are strong Bransted acids.

Dimethylcyanamide reacted with camphene in the presence geteropoly acid (GPA) 12-molybdenophosphoric at 60 °С to give α-(1, 7, 7-trimethylnorbornyl)-β-dimethylcarbamid. The yield of dry crystals was 55%.

The reactions were carried out in surplus of dimethylcyanamide (camphene : catalyst ratio was 1 : 2,6). Except water and tetrahydrofurane (TGF) were added in the reaction (camphene : water ratio was 1 : 5).

The composition of the reaction mixture was monitored by GLC.

The structure of receipt compound was determined by mass spectrometry, 1H and 13C NMR spectroscopy by comparing its physicochemical parameters with the known data.
Aleksandrov А.N., Ulesov А.V., Тkachenko V.I., Moskvitin А.V., Skoromnaya S.F., Zaginaylov V.G. Comparative study of the chemical composition supercritical CO2-extract from concrete of rose and rose essential oil (absolu)

Supercritical CO2, as ecological clean solvent, is used for reextractions of the fluid part from concrete of rose (Rosa gallica L.). The Explored process reextractions flying aromatic material supercritical fluid at the temperature 35 оС (308,15 K) and 50 оС (323,15 K), pressure 10 MPa, 13 MPa and 18 MPa. The comparative GC-MC investigation of composition of SC CO2-extracts, rose concrete (Crimean, Ukraine) and rose essential oil (absolu) was fulfilled.

Supercritical CO2-extraction is an efficient modern method of the reception natural material, possessing essential advantage over traditional way of the reception essential oil, more natural concentrations of some components (nerol, geraniol, caryophyllene etc.). Possibility of management composition extract from aromatic material with use supercritical dioxide carbon under different parameter of the process is shown.
Kuleshov A.V., Smolin A.S. Paper-forming properties of plant fibers being reused

The investigation of the influence of wastepaper cyclic using on strength characteristics of materials on basis of it are presented in the article. The modeling of the cyclic process was fulfilled with using the pulp half-products. The influence of the cyclic on different pulp sorts fractional composition and fibers length was analyzed.


Semenovich A.V., Loskutov S.R., Permyakova G.V. The gathering of oil products by sorption on modified conifers bark

Solid samples obtained after extraction of pine, larch and fir bark were modified by methyl silicone liquid PMS-100. We found that 1 g of the modified bark wish 0.30.5 mm particles was able to hold 5,32 g of hydrocarbon oil and 8,23 g of oil-in-water concentrated emulsion Ecol-3. The maximum efficiency of hydrophobization with help PMS-100 and absorption of oil from the water surface reached for larch and pine bark obtained after the extraction by the systems: water – methyl cellosolve and water – methyl cellosolve – dimethyl formamide. The modified conifers bark is suitable as a sorption material for gathering of oil products.


Kiselev W.P., Filimonov W.S., Bugaenko M.B., Efremov A.A. STUDY OF RESISTANCE OF HIGHWAY CEMENTING AND ORGANO-MINERAL MIXTURES TO BIODESTRUCTION WITH PRESENCE OF ADDITIVES OF PLANT AND MINERAL ORIGIN

Resistance of asphalt concrete and of the main components of organo- mineral mixtures to biodestruction with presence of fungicidal additives: resins of Siberian pine wood pyrolysis, resins of hydrolytic lignine pyrolysis, sodium fluoride, also carbon lining has been studied according to the GOST 9.049-91. The express-method is suggested to determine resistance to biodestruction using inhibition of luminescent bacteria.


Alashkevitch Yu.D., Pachar D.V., Kovalev V.I. FEATURES OF CURVILINEAR FORM SETS OF DISK MILLS INDIVIDUAL KNIFE CONSTRUCTION

In introduction it is spoken about to improve beating process it is possible by a choice of figure knife set. Therefore the problem of curvilinear form individual knife construction is put.

For construction are set by the form of a knife. In this case the form district. It is the most simple for manufacturing.

According to figure 1 size of a corner β can vary irrespective of a corner α. It is feature of the given kind sets.

Entrance parameters are entered. There are external and internal district edge radiuses, entrance angle α and target angle β, coordinates and radius curvature center.

Further determine the equation of curvature for an individual knife construction, knife points crossing coordinates with external and internal district edge radiuses and the central corner φ.

Proceeding from the received values and taking into account feature knife set determine radius of curvature of an individual knife.

It is limited external and internal district edge radiuses, entrance angle α and target angle β. And then it is determined radius curvature center.

Thus for the first time the problem of an curvilinear form individual knife set construction is solved in view of the entrance angle α does not depend on a target angle β. Thus there was possible a definition of radius of curvature Rx.
Ananina N.A., Andreeva O.A., Oganesyan E.T. Polysaccharides of Dahlia (Dahlia single L.) tubers

The paper describes the data on Dahlia single L. tubers polysaccharide extraction and chemical composition. The carbohydrate complex has been found to include water-soluble polysaccharides, pectin substances and hemicelluloses. The qualitative monosaccharide content was determined by paper chromatography. Water-soluble polysaccharide fractions and pectins appeared to be predominant substances in the carbohydrate complex studied. Sufficiently high polysaccharide yield indicates to the prospects of Dahlia single L. tubers application as a source of both inulin and water-soluble polysaccharides and pectins.


Shishkanova S.V., Shapiro I.L., Pen V.R. TAKING INTO ACCOUNT OF STOICHIOMETRY IN MODELLING PROCESSES OF KINETICS OF DELIGNIFICATION OF THE WOOD

In article use of the balance equations for the account of kinetics chemical processes with participation of polymers of an irregular structure of a natural origin is offered. For soda pulping of wood use of a method allows to receive mathematical model of kinetics delignification, adequate in all the investigated temperature and time intervals.


Levchenko S.I., Karpenko S.L., Pen V.R. CRITERION OF MANAGEMENT OF PULPING OF MIXES OF VARIOUS BREEDS OF THE WOOD

Limitation of integrated criterion and impossibility of its use is shown at cooking mixes of various breeds of the wood. It is offered to use system of the differential equations modeling of kinetics of process of delignification of mixes of various breeds of the wood, and to apply the designed degree of conversion lignin to management of pulping.


Levchenko S.I., Shapiro I.L., Pen V.R. DISTRIBUTION OF BOLTZMANN AND POLYEXPONENTIAL KINETICS SODA PULPING OF THE WOOD

It is shown that on the assumption of polyexponential (polychronic) kinetic of chemical reactions for energy activation Boltzmann's distribution may be carried out. It has been found experimentally the existence of such distribution at the polysaccharide destruction of wood in alkaline conditions of delignification.


Shishkanova S.V., Karpenko S.L., Pen V.R. ABOUT CRITERION OF MANAGEMENT OF PROCESS OF PULPING OF THE WOOD

In work application of the Н-factor is analysed at pulping of the wood. Limitation of this criterion and the problems connected to its use at pulping of mixes of various breeds of the wood is shown.


Научное издание

ХИМИЯ

РАСТИТЕЛЬНОГО СЫРЬЯ



2 • 2008
Зарегистрировано Министерством РФ по делам печати,
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Свидетельство о регистрации ПИ №77-16614 от 24.10.2003.

Литературный редактор : Н.Я. Тырышкина

Издательство Алтайского государственного университета:


656049, Барнаул, пр. Ленина, 61

Изд. лиц. ЛР 020261


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* Предыдущее сообщение: О.А.Колмакова и др. Низкотемпературная окислительная делигнификация древесины. 14. Физико-химическая характеристика облагороженной пероксидной целлюлозы из ели // Химия растительного сырья. 2004. №3. С. 35–38.

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