Why does a carton of heavy cream last for 2 months in the refrigerator, but a carton of milk only lasts for about 1 week before expiration?

Question

Why does a carton of heavy cream last for 2 months in the refrigerator, but a carton of milk only lasts for about 1 week before expiration?

In: 6468

Answer 1

I thought I read somewhere, sometime (sorry so vague but I’m old) that light affects time to spoil. Milk in cartons lasts longer than milk in plastic jugs because the carton blocks the light. Is this true?