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1

I always buy two bunches of bananas. One Bunch that is perfectly ripe and ready to eat within a few days. The second bunch is as green as I can find. I then keep these two bunches separated in my kitchen. This allows me to have bananas for a period of about 7 to 9 days without problems. Additionally when I get them home, the first thing I do is submerge the ...


0

I've eaten pico that only I have made for up to 2 weeks. I use a good bit of fresh lime juice and that seems to keep everything fresh for a long time. As long as the tomatoes continue to look fresh it should be fine.


1

For milk-alternatives, they're typically the same product (there may be exceptions), but they're often sold chilled for the following reasons: Marketing: Chilled products are typically perishable foods and therefore perceived to be fresher and of higher quality. Consumers will usually make the same assumption for any product sold chilled. Familiarity vs. ...


3

In addition to Stephie's safety answer, there is another reason: Many foods undergo undesirable flavor or texture changes due to reacting with the oxygen in the air (oxidation), losing or gaining moisture to the air, etc. Before you open the package, that's prevented by the air-tight seal and possibly by the air in the jar not actually being air (e.g., it ...


1

I'll use (cow) milk as an example, but the idea is the same for other products like juices and fake milks. In the case of milk, the milk you get in tetrapak cartons (shelf stable milk) is ultra-high temperature pasteurized (UHT). It is heated briefly (1 to 2 seconds) to over 135 C then cooled down very quickly to kill bacteria and spores and then filled ...


7

The canning process makes food safe: existing bacteria and fungi are killed, the intrusion of new pathogens is prevented by sealing the container. (More e.g. here.) As soon as you open the can or jar, its contents are exposed to the surrounding air which will contain bacteria and fungal spores. Some of those will happily grow feeding on the food they land ...


2

The product is sterilised during packaging. When you open it, bacteria and fungi in the atmosphere will contaminate it and begin to degrade it.



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