Microbial Biotransformation of α-Ionol [PDF]
Journal of Chemical Research, 2018 Ionols are important flavour and fragrance compounds both in natural and synthetic aroma blends that are used in many daily products. α-Ionol has been converted for the first time to 3-oxo-α-ionone by microbial biotransformation using the plant pathogenic fungi Aspergillus niger NRRL 326 and Fusarium culmorum (freshly isolated) over 7 d at 25°C at 6.6 ...
Fatih Demirci +2 more
exaly +4 more sources
Application of IR spectroscopy to control oxidation inhibitor (ionol) concentration in mineral transformer oils [PDF]
E3S Web of Conferences, 2020 Mineral insulating oils used as dielectric and heat dissipating agent in high voltage oil-filled equipment are subject to oxidation. Oxidation results in the appearance of undesirable substances that reduce the electrical insulating properties of liquids.
Garifullin Marsel Sh. +4 more
doaj +2 more sources
Determination of the antioxidant additive “Ionol” in transformer oil by gas chromatographic method [PDF]
E3S Web of Conferences, 2021 Transformer oil is widely used in power oil-filled electrical equipment, which is an insulating and diagnostic medium. During the operation of power transformers, its operational and dielectric properties deteriorate.
Duy Hung Nguyen +2 more
doaj +3 more sources
Investigation of Technological Operations Affecting the Determination of Concentration of Ionol Additive in Insulating Oil in High-Voltage Equipment [PDF]
Problems of the Regional Energetics, 2018 Ionol oxidation inhibitor level control is included into normative indicators list for diagnostics of internal insulation condition of any oil-filled high voltage device.
Korobeynikov S.M., Lyutikova M.N.
doaj +3 more sources
Effect of ionol extraction temperature onto its gas chromatographic detection at transformer oil
Trudy Odesskogo Politehničeskogo Universiteta, 2015 The gas chromatography used for detecting antioxidizing additive ionol at transformer oil presence helps to ensure reliable operation of oil-filled electrical equipment. Changes in the ionol preliminary extraction temperature do affect the reliability of
Sergiy V. Zaitsev
doaj +2 more sources
On the feasibility of monitoring the content of phenolic compounds in transformer oil
Омский научный вестник, 2023 It is known that in order to restrain the process of oxidation of transformer oil, and, accordingly, to extend its service life, an antioxidant additive ionol is added to it.
M. N. Lyutikova +4 more
doaj +2 more sources
Gas chromatographic determination of the distribution coefficients in system “transformer oil — ionol — extractant” during ionol extraction with various volumes of extractant [PDF]
Trudy Odesskogo Politehničeskogo Universiteta, 2014 Gas chromatographic measurement of the maintenance of an additive ionol in the transformer oil, promoting reliable operation of the oil-filled electric equipment, is allowed to carry out with use of ethyl alcohol for extraction ionol from transformer ...
Сергій Володимирович Зайцев +1 more
doaj +6 more sources
Contributions to Tobacco and Nicotine Research, 2001 3-Oxo-α-ionol ethyl carbonate, a precursor of megastigmatrienones was prepared by reduction of α-ionone to α-ionol, followed by esterification with ethyl chloroformate and then by oxidation with t-butyl chromate. The total yield was about 23%.
Yang H +5 more
doaj +2 more sources
Insects, 2018 Bactrocera latifrons (Hendel) (Diptera: Tephritidae) is a pest fruit fly species native to Oriental Asia which has invaded and established in Hawaii and Tanzania and has been recovered in detection trapping in California.
Grant T. McQuate +2 more
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The problem of determining the antioxidant additive in transformer oil by chromatographic methods [PDF]
Известия высших учебных заведений: Проблемы энергетики, 2020 THE PURPOSE. Transformer oil is widely used in high-voltage electrical equipment and acts as a dielectric and also as a cooling medium. It consists of a complex mixture of hydrocarbon compositions with various impurity compounds.
Duy Hung Nguyen, V. F. Novikov
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