Rapid determination of dicarboxylic acids and hydroxy fatty acids by GC.
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چکیده
منابع مشابه
Isolation and determination methods for brain cerebrosides, hydroxy fatty acids, and unsaturated and saturated fatty acids *
A new method is described for the isolation of nearly pure total cerebrosides from fresh brain. Florisil columns are used to separate the cerebroside hydroxy and normal acids, in the form of their esters, and to separate the saturated and unsaturated esters of each group. The esters within each class are determined by gas chromatography, the hydroxy esters being run as the methyl ethers. Yields...
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Background: The dried fruits of Silybum marianum (L.) Gaertn (Compositae) contain silymarin, an isomeric mixture of flavonolignans. Silymarin acts as a strong anti -hepatotoxic. This fruits contains a high amount of oil . Objective: The objective of this study was to determine total lipid content, fatty acid composition and content of different kind of tocopherols in seed oils of S. marianum...
متن کاملNucleation of dicarboxylic acids
Homogeneous vs. heterogeneous nucleation in water-dicarboxylic acid systems A. I. Hienola, H. Vehkamäki, I. Riipinen, and M. Kulmala Department of Physics, Division of Atmospheric Sciences and Geophysics, University of Helsinki, P.O. Box 64, 00014 University of Helsinki, Finland Received: 28 March 2008 – Accepted: 2 September 2008 – Published: 21 October 2008 Correspondence to: A. I. Hienola (a...
متن کاملCharacterization of Esters of fatty Acids and Dicarboxylic Acids with Guerbet Alcohols
Esters oi some common iatty acids and diacids with Guerbet alcohols were prepared by p-toluenesulionic acidcat~lyzed esteriiication. Such materials are oi interest in applications such as additives in various industrial products. Gas chromatography-mass spectrometry with chemical ionization using methane as ionization gas is an efficient characterization method ior these Guerbet esters and dies...
متن کاملA rapid and simple method for the determination of esterified fatty acids and for total fatty acids in blood.
Carboxylic acid esters react with hydroxylamine in alkaline solution to form hydroxamic acids. These acids produce a red to violet reaction with ferric chloride which has been utilized by Feigl (1949) for the microchemical detection of carboxylic acid derivatives. Lipmann and Tuttle (1945) developed a method for the quantitative assay of acylphosphates by allowing hydroxylamine to react with th...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1988
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.37.63