[Determination of chondroitin sulfate in food supplements by capillary zone electrophoresis].

Chondroitin sulfate is widely used as an ingredient in food supplements. A method of capillary zone electrophoresis for qualitative and quantitative analysis of chondroitin sulfate in food supplements has been developed. The system of capillary electrophoresis Agilent 3D CE (USA) with diode array detector (spectral range 190-400 nm, 192 nm was used to quantity), quartz capillary Agilent with effective length 56 cm (USA) (internal diameter 50 microm, temperature 25 degrees C, 30 kV, negative polarity) and 50 mM phosphate buffer (pH 3.

[Development of methods for determining acrylamide in food products by gas-liquid chromatography].

The method of determination of acrylamide in various food (milk powder, potato chips, instant coffee) by gas-liquid chromatography after pre-bromination was developed. Studies have shown the possibility of using bromination of acrylamide to give it the necessary properties for better extraction, purification and detection. Also revealed the possibility of qualitative and quantitative determine a acrylamide in food by gas-liquid chromatography with detection by electron capture detector.

[Composition and content of biologically active substances in rose hips].

The paper studies the chemical composition of the powders obtained from the pulp with the skins and seeds of fruits of wild rose hips. Research results have shown that the main fraction of the powder is dietary fiber, powder of seeds of insoluble fiber in 1,6 and 2,3 higher than in the powder of the fruit with a thin skin and pulp, respectively. The greatest amount of carbohydrates and protein found in powders and pulp of the fruit with a thin skin, and lipids predominate in the powder from the seeds.

[Methods quantitative for determination of water-soluble vitamins in premixes and fortified food products by micellar electrokinetic chromatography on short end of the capillary].

It was purposed new technique by micellar electrokinetic chromatography on short end of the capillary (capillary electrophoresis system Agilent 3D CE, DAD, quartz capillary HPCE stndrd cap 56 cm, 50 microm, 50 mM borate buffer pH=9,3, 100 mM sodium dodecil sulfate) for simultaneous determination of water-soluble vitamins (B1, B2, B6, B12, PP, B5, B9, C, B8) in fortified food products and premixes. It was observed on 6 samples of vitamin premixes and 28 samples of fortified food products using this technique. Our findings are consistent with the results of research on certain vitamins, conducted by other methods.

[Variability of the plasma proteome in healthy people (report 1)].

The last decade has seen intense development of proteomic technologies have opened new perspectives for rapid large-scale screening of biological samples in order to find biomarkers of various diseases or conditions. However, in order to adequately evaluate the possibility of using protein as a biomarker, it is necessary to know how much its concentration varies widely in healthy people. This project aims to explore the limits of the concentration of protein components of plasma in healthy people.