A method has been developed for the quantitative thin layer chromatographic determination of the triglyceride groups, differing in unsaturation, based on densitometry of the charred bands. Complete separation was achieved by continuous development in an open glass jar. The need for correction coefficients was avoided through addition of bromine to the double bonds prior to charring in the presence of sulphuryl chloride. The accuracy and precision of the method were evaluated on a standard mixture and on sunflower oil, olive oil, lard, cocoa butter, and beef tallow. The method is applicable for triglyceride group analysis of the most common fats and oils which contain saturated, monoene, and diene acids.

AND SUMMARYAn analytical approach is presented for the study of one-phase interesterification of mixtures of sunflowerseed oil with fully hydrogenated lard, natural lard, and tallow, based on triglyceride group analysis by argentation thin layer chromatography. The curves for the changes of each of ten triglyceride groups, differing in unsaturation, are reported. These are used to establish the conversion of the initial composition to the random limits in the mixtures cited. The alterations in the differential dilatation curves are explained in part by the changes in the triglyceride composition.

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The chapter is devoted to understanding circular economy as a new stage of economic development, which is aimed to respect limited quantity of water, soil, clean air and ecosystem services, strongly connected to the new global social tensions, and how to achieve this stage. The literature survey has shown the current concepts for circular economy discuss new usage of resources, but not who and how will provide such changes. That is why it is suggested application of the Hegelian doctrine for economic development which is answering similar (we mean social) to the above questions – how to get freedom and society consolidation in market economy, suggesting state regulation of market economy. Consequently such regulation is needed to overcome the social tensions strongly connected to limited quantity of resources, vital for the future of society. Taking this doctrine as a theoretical background, it is assumed each new stage of economic development is characterised by different content of goals, subject and means for achieving the goals. The applicability of the notion circular economy is a new stage of economic development t is tested and approved by demonstrated contemporary changes in policies for economic development, taking place in the European union, by recently changed and achieved goals of its development.