Does sour cream contain preservatives that make it last longer?

Some commercial brands of sour cream don’t contain preservatives; in others, potassium sorbate and sodium benzoate inhibit mold and other micro-organisms. Preservatives don’t necessarily ensure an extended shelf life—sanitary processing and chilled storage are more critical, maintains food scientist Dr. Robert Bradley.
FDA Food and Drug Act - Code of Federal Regulations “Requirements for Specific Standardized Milk and Cream”

Dr. Robert Bradley, professor emeritus of food science, University of Wisconsin


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