TY JOUR TI Effect of Ultrasonication on Structural and Antimicrobial Properties of Polymer Compositions Based on Polyolefins Dispersed with Betulin KW Polyethylene KW polypropylene KW ultrasonic exposure KW polymer compositions KW betulin KW antimicrobial properties KW extrusion KW test microorganisms JO Food Processing: Techniques and Technology AU Vasilyev, I.Y. AU Rod, V.A. AU Saveleva, O.A. PY 2025 IS 55 PB Kemerovo State University