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The search for new producers of biologically active substances (BAS) against human and animal diseases continues to be an important task in biology and medicine. Experimental work must be carried out well in advance of need because it takes an average of ten years to develop a new medication, as well as additional time to put it on the market. Study of the Protozoa forms a special branch of biology - protozoology. The traditional fields of protozoology are taxonomy, phylogeny, morphology, cytology, evolution, ecology and host parasite-interactions. The Protozoa is the only taxon among the...

This book outlines one of the vast and fruitful fields in protozoan microbiology and formulates the principles of obtaining biologically active substances from cultures of Protozoa. The correlation between composition of selected flagellates' cell components (polyunsaturated fatty acids, membrane surface glycophospolipids, intercellular polysaccharide, beta-1, 3-glycan) and their biological effects in experimental animals, is the main topic of the book. As the book's content shows, the Protozoa are gradually acquiring their place among traditional producers of biologically active substances....

Scientific principles of design and fabrication of packaging materials for food purposes are described in this book, as well as methods for structural modification and other techniques. The main practical properties and applications of polymer materials are described. Great attention is paid to the analysis of all processes taking place during formations and destruction of polymer packaging materials. Methods such as electron microscopy, infrared microscopy and optical polarization were used to describe the behaviour of polymer materials and their composition.