TY JOUR TI BIODEGRADABLE FILM MATERIALS BASED ON POTATO PULP (WASTE FROM STARCH PRODUCTION) WITH THE ADDITION OF SODIUM ALGINATE AND PECTIN KW BIODEGRADABLE PACKAGING FILM KW POTATO PULP KW PECTIN KW SODIUM ALGINATE KW CALCIUM CARBONATE KW PHYSICO-MECHANICAL PROPERTIES KW FOOD INDUSTRY WASTE JO Herald of Technological University AU Kalmykova, V.V. AU Kartushina, Y.N. AU Nilidin, D.A. PY 2026 IS 29 PB Kazan National Research Technological University