Izvestiya Vuzov. Prikladnaya Khimiya i Biotekhnologiya

16-20

Authors: SYNTHESIS AND BIOLOGICAL TESTING FOR PESTICIDAL ACTIVITY OF 9-ARYL-N-ARYL, ALKYL-SUBSTITUTED 1,2,3,4,5,6,7,8,9,10-DECAHYDROACRIDINE-1,8-DIONE DERIVATIVES Pyrko A.N.

The purpose of this work is the synthesis and pesticidal activity testing of 9-aryl-N-aryl, alkyl-substituted 1,2,3,4,5,6,7,8,9,10-decahydroacridine-1,8-dione derivatives which could become the basis of plant protection products. The substances investigated were obtained by three-component heterocyclization of primary amines with aromatic aldehydes and dimedone. The synthesized compounds were tested for certain types of insecticide (against toxoptera graminum, musca domestica, meloidogyne incognita, heliothis virescens, diabrotica undecimpunctata howardi, caenorhabditis elegans), fungicidal (against drechslera, erysiphe, puccinia, peronospora) and herbicidal (against amaranthus retroflexus, brassica rapa, abutilon theophrasti, alopecurus myosuroides , avena fatua, echinochloa crus galli) activities. All synthesized compounds have shown promising insecticidal activities against toxoptera graminum. 9-(4-methoxyphenyl)-, N-2-phenylethylsubstituted, 9-(3,4-methoxyphenyl)-, N-2-carboxyethyl-substituted and 9-(2-hydroxyphenyl)-N-octylsubstituted derivatives have shown significant herbicidal activities against amaranthus retroflexus. 9-phenylN-methyl-substituted derivative was active against amaranthus retroflexus, brassica rapa, and abutilon theophrasti. Only this compound showed antifungal activity against drechslera

33-43

Authors: Leushina А.P. , Mamontova E.V.

Conditions for obtaining of quasi-binary salt system (Na2SO4)1-х(Gа2(SO4)3)х are developed and the length of the region of its homogeneity is defined (х 0.00-0.07). The solid electrolyte (Na2SO4)1-х(Gа2(SO4)3)хis first synthesized, its conductivity by cations of gallium (III) is found. In the composition range 1.0-9.0 mol.% of (Gа2(SO4)3)х and the temperature range 373-723 K transport properties are investigated: electric conductivity, numbers of the electron transport, the diffusion coefficients of gallium (III) cations. The possibility of using a solid electrolyte (Na2SO4)0,95(Gа2(SO4)3)0,05 in the composition of an electrochemical cell for coulometric titration of lead telluride (Pb1±δTe) is shown, temperature range 553-673 K of its operation is determined.

54-63

Authors: Дитченко Т.И. , Шабуня П.С. , Фатыхова С.А. , Молчан О.В. , Юрин В.М.

Цель работы - анализ состава гидроксикоричных кислот и их производных в каллусах Eсhinacea purpurea в зависимости от типа питательной среды. Установлено, что в водно-этанольных экстрактах из каллусных культур, также как и травы эхинацеи пурпурной, доминирует цикориевая кислота. Использование продукционной питательной среды для культивирования каллусной ткани приводит к существенному повышению уровней накопления производных кофейной кислоты (цикориевой, кафтаровой, хлорогеновой кислот), что позволяет рассматривать полученную культуру в качестве перспективного биотехнологического источника фармакологически ценных фенилпропаноидов.

72-79

Authors: T.M. Luong, I. A. Nechaeva, K.V. Petrikov, A.E. Filonov, O.N. Ponamoreva

In this study it was reported, that significant biosurfactants produced by Rhodococcus sp. X5 grown on nhexadecane, are succinoyl trehalose tetraesters. The structural characterization of trehalolipids was determined based on MS/MS and GC/MS analysis. Succinoyl trehalolipids from Rhodococcus sp. X5 exhibit high surface activity (27 mN/m) and emulsifying activity (E24 - 55%). Biosurfactants were characterized by the next physico-chemical indications – minimum surface tension (27 mN/m), critical micelle concentration (4,1·10-5 mol/l), hydrophilic - lipophilic balance (7-8), the maximum number of molecule adsorbed per unit area (1,27·10-5 mol/m2), the minimum area per molecule biosurfactant (13 nm2), Gibbs free energy of adsorption (–35 kJ/mol). The results demonstrate that studied trehalolids are capable to increase wetting the surface of hydophobic compounds by water and to form type of emulsion “oil/water”.

89-91

Authors: N.A. Sidorovа, S.A. Trofimova

Results of this work are directly connected with a problem solution in complex processing of ore enrichment waste at the mining enterprises. In order to optimize the biotechnological transformation processes ore concentrate was studied for microbial activity of mesophilic chemotrophic microorganisms due to their ability to extract metals from ore dumps at the Kostomuksha mining plant. In the experiment biogenous leaching solutions were used. Efficiency of ore leaching was estimated by change of quantity of bacteria, redox potential, acidity and concentration of metal. Due to chemotrophic microorganisms in the ore transformation process metal yield improvement was achieved by 63% compared with traditional chemical leaching. The effect is mediated both by direct oxidation of metals in ore composition, and additional ore oxidation by reoxidated microorganisms in solution

105-112

Authors: Hoang Quang Cuong, S.N. Evstaf’ev

Heat treatment of wheat straw biomass in the environment of 1-butyl-3-methylimidazolium chloride is executed at temperatures of 80, 100, 120 and 140 °C using ultrasonic frequency of 44 kHz and a power of 10, 30 and 50 W. Cellulose, hemicellulose and lignin were isolated from straw after treatment. The resulting fractions of polysaccharides were subjected to enzymatic hydrolysis using preparation Tsellolyuks A. The change of the mass concentration of sugars yielded in the enzymatic conversion of straw polysaccharides depending on the heat treatment process factors (temperature, duration and power) was investigated to optimize the heat treatment process by mathematical modeling using Design-Expert 8.0.5.2 program. The temperature of 103 °C, processing duration of 5 minutes and the power of 48.5 W were found to be optimum conditions for the maximum yield of sugars. The discrepancy between the predicted and experimentally obtained sugar yield was 1.8% that confirms the validity of the received model

122-127

Authors: S.B. Romadenkina, A.V. Kruzhalov, E.V. Lobankov, A.Yu. Zemlyakov

The comparative assessment of physical and chemical parameters of dolomite powder and ashes of shale was carried out. One of the main indicators of mineral powders is an indicator of bitumen content was determined experimentally. Prepared asphalt concrete mixes containing dolomite powder and ashes of shale were tested for the main operational characteristics (ultimate compression strength in different conditions; water saturation). The results of the experiments suggested the possibility of replacing expensive dolomite powder by the cheaper ash powder.

135-143

Authors: L.P. Nilova, T.V. Pilipenko, A.A. Vytovtov

The aim of the work was to study the composition of biological active agents in rice oil of different producers, and their influence on resistance to an oxidizing stress. Objects of researches were rice oil: refined «Basso» (production of «Basso Fedele & Figli S.R.L.», Italy); refined «Mastr'Olivo» (production of «Pietro Coricelli SPA», Italy); natural «Dial-Export» (production of LLC Butas, Russia). Biologically active agents were determined by chromatography-mass spectrometry on a gas chromatograph «MAESTRO 7820A», γ-oryzanole was detected by a spectrophotometry (solvent – n-heptane); vitamin E content was estimated by EmmeryEngel's method with orthophenantroline. Rice oils differed by γ-oryzanole and vitamin E content. γ-oryzanole content (mg/100 g) was found to be correspondingly in rice oils: «Basso» – 406.54, «Mastr'Olivo» – 516.92, «Dial-Export» – 565.49; vitamin E content (mg/100 g) – 88.1; 85.6; 98.8 respectively for oils. The oxidizing stress was modelled by rice oil holding at a temperature of 120 °C within 5 hours. IR-spectrums were recorded each hour. Oxidizing destruction has happened only for the 5th hour of thermal influence. Use of IKspectroscopy has given the chance to calculate oxidizing coefficients of rice oil on the oxidation beginning stage (K1 and K2) and oxidation process end (K3 and K4). K1 and K2 were 100 times more, than K3 and K4 in all oils, that speaks about prevalence of initial processes of oxidation. Very high vitamin E content in rice oil even at high content of γ-oryzanole causes stronger oxidizing destruction

151-156

Authors: O.A. Nikonova, E.V. Karpenko, E.A. Selezneva

The aim of the research was to assess the qualitative parameters of canned paste meat containing mix of vegetable oils: pumpkin and mustard. The oils were included at a stage of forcemeat drawing up in various ratios. The organoleptic, physicochemical and microbiological indexes of canned meat, made with oil mix introduction are defined. A content of fat-soluble vitamin in the test and control samples of canned food was also ascertained. The results of the research show that oil mix addition doesn't worsen functional characteristics of canned meat and allow using oils as additive to meat raw materials in the formulations of canned meat. Oil containing canned meat meets microbiological standards. Oil mixture insert enlarges A and E vitamins amount without other indicators change for the worse.

164-171

Authors: A.S. Merzlyakova, A.A. Okolelova, V.N. Zaikina, A.V. Pasikova

Petrochemical plants are the permanent sources of anthropogenic impact on soil. Up to now, in Volgograd there has been no a comprehensive assessment of their impact on the state of the soil cover performed. Existing standardized methods for the determination of petroleum products in soils have large discrepancies in results. In this regard, there is a need to improve their interpretation. The accumulation of phenols, hydrogen sulfide, lead and mercury not detected. With increasing concentration of petroleum products in the soil the content of organic carbon (Cоrg) increases due to the organic carbon of anthropogenic origin.. Direct dependence between the concentration of petroleum products and organic carbon content and pH was found

181-184

Authors: I.S. Cherepanov, G.M. Abdullina

Dialyzable fractions of brown polymers synthesized in amino-carbonyl interaction of D-lactose with ptoluidine under condition of acid catalysis in aqueous-ethanolic media was studied by UV-Vis spectrophotometry. To study of the fraction’s compositions and their dialysis dynamics two parallel series spectra of dialysates were measured. It is obtained that non-nitrogenous derivatives in dialyzable fractions are presented as weakly colored products with furan structural fragments, the main nitrogenous component is p-toluidine eliminated by the Amadori rearrangement product’s degradation.