FIELD: biotechnology.
SUBSTANCE: disclosed are a matrix containing viable non-pathogenic Escherichia coli, and a method of producing a matrix. Matrix is presented in the form of a particle containing alginate and coated with polysaccharide with maltodextrin or dextrin and a disaccharide represented by sucrose or trehalose. Method involves mixing Escherichia coli with alginate to form a mixture, forming particles from said mixture and contacting said particles with a preserving solution containing sucrose or trehalose and maltodextrin or dextran; drying obtained particles.
EFFECT: invention provides preservation and storage conditions for bacteria with preservation of biological activity.
8 cl, 22 tbl, 14 ex, 10 dwg
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