VIBROMAGNETIC EXTRACTION OF HYMATOMELANIC ACIDS FROM SAPROPEL AND INVESTIGATION OF THEIR STRUCTURAL AND MOLECULAR COMPOSITION
Abstract
The aim of this investigation was to study the influence of vibromagnetic extraction on the qualitative and quantitative composition of the hymatomelanic acids (HMA) obtained from the sapropel of Karasevoye lake (Russia, Tomsk Region, Chazhemto). HMA were extracted using two methods: continuous mechanical stirring and vibromagnetic extraction. It is reported that the use of vibromagnetic extraction increases the yield of HMA in 2.62 times. Functional composition of the HMA, obtained from sapropel by vibromagnetic extraction, was characterized using thermogravimetric analysis and infrared spectroscopy. It has been revealed that content of aliphatic fragments prevails in the structure of the HMA over content of condensed fragments. It has been shown that aliphatic fragments of HMA comprises an increased quantity of carboxyl groups. GC-MS method was used to determine content of carboxylic acids in the composition of the HMA fractions, extracted by various methods. It is reported that HMA of sapropel obtained by vibromagnetic extraction comprises 9 carboxylic acids, and their total content is 1.8 times higher compared to HMA obtained by continuous mechanical stirring. An information obtained during this investigation can be further used to create cosmetic and therapeutic products based on sapropel, and analytical methods for controlling production of such products.
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