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In this work the synthesis of a crosslinked macroporous copolymer was effected from methyl methacrylate and acrylamide. The synthesis process began with emulsion prepolymerization, followed by sol–gel copolymerization until a hard block was obtained. Determination of the properties of the obtained material was carried out by FTIR, mercury porosimetry, and SEM microscopy. The material was characterized by a porous structure with open pores. The macroporous copolymer obtained can be used for polymer–analog reactions and the transformation of amide and ester groups into acyl azide groups. It can be used as a hard inert support for the immobilization of enzymes, or other proteins, by condensation of acyl azide group on polymer with the free amino group from the base amino acid of enzyme/protein. For the immobilization of microorganisms it can be used by vacuum diffusion of microorganism suspension into the porous structure, without active group transformation reactions. With microorganisms in the polymer pores, microorganism colonies form within the copolymer by microbial fermentation. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 387–395, 2004

AbstractVolatile compounds from the berries of common juniper (Juniperus communisL.) were isolated by hydrodistillation, hexane extraction and supercritical CO2extraction. The hydrodistillation yield was 2.17%, the hexane extraction yield 5.31 % and supercritical CO2extraction yield 0.96%. Their compositions were compared using GC/M S as the method of analysis. Analyses reveal that samples differ quantitatively and qualitatively. The concentrations of monoterpene hydrocarbons (α-pinene, sabinene, myrcene) were higher in the hydrodistilled oil, while some less volatile compounds were present in extracts, especially in the hexane extract.

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