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Post by mcgee on Jul 14, 2023 19:41:16 GMT -5
I peel bananas, cut them into thirds, and freeze them for making smoothies. Lately, they’ve been turning a disgusting brown color but they never used to. We’ve still been using them but we’re curious as to why they’re suddenly turning brown in the freezer. Any ideas?
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Post by wallycat on Jul 14, 2023 23:15:30 GMT -5
I suspect how ripe they are to begin with or how warm/cool they were when you put them in the freezer or how long they've been in there.. Also, any possible power outages?
I found this explanation:
Bananas turn black when they're frozen because the water content that is present in the fruit transforms into ice crystals. These ice crystals expand and cause cells in the banana skin to rupture. The rupturing of those cells releases polyphenols, which speed up the blackening process.
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