Pavel Rybochkin

Tula State University · Department of Chemistry

Biomembranes based on an organosilica sol–gel matrix were used to immobilize bacteria Paracoccus yeei VKM B-3302 as part of a biochemical oxygen demand (BOD) biosensor. Diethoxydimethylsilane (DEDMS) and tetraethoxysilane (TEOS) were used as precursors to create the matrix in a 1:1 volume ratio. The use of scanning electron microscopy (SEM) and the...

A heterogeneous biocatalyst was obtained by immobilizing the cells of the yeast Debaryomyces hansenii VKM Y-2482 and the bacteria Paracoccus yeei VKM B-3302 into an organosilica material using the sol-gel method. The catalytic activity of immobilized cells was characterized using a heterogeneous biocatalyst as a bioreceptor element of the biosensor...

Microorganism-cell-based biohybrid materials have attracted considerable attention over the last several decades. They are applied in a broad spectrum of areas, such as nanotechnologies, environmental biotechnology, biomedicine, synthetic chemistry, and bioelectronics. Sol-gel technology allows us to obtain a wide range of high-purity materials fro...

We have studied immobilization of Paracoccus yeei VKM B-3302 cells in an organosilica sol–gel matrix consisting of tetraethoxysilane, methyltriethoxysilane and polyvinyl alcohol as a structure-modifying agent. Optical microscopy showed that higher amounts of methyltriethoxysilane make the solid material structure softer. In addition, formation of s...

The impact of hydrophilic polymers in an organosilica matrix on the features and performance of immobilized methylotrophic yeast cells used as biocatalysts was investigated and described. Yeast cells were immobilized in a matrix made of tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) by one-step sol-gel route of synthesis in the presence...

The sol–gel process is an effective method to encapsulate living cells into a three-dimensional silica network under mild conditions. In this work, the structure and properties of biohybrids obtained by immobilizing methylotrophic yeast in a one-step sol–gel synthesis process (pH 7.6) from tetraethoxysilane (TEOS) and dimethyldiethoxysilane (DDS) i...