What's really going on when an avocado turns brown?
, a site that dives into the chemistry of everyday food and drinks, offers a bit more explanation: In the presence of oxygen, the enzyme polyphenol oxidase converts the phenolic compounds in the avocado into quinones . These quinones polymerize—they join smaller molecules into long chains—to create polyphenols, and.
If all that went over your head and you just want to know whether avocados that have browned from oxidation actually taste worse, here’s Monte Nesbitt, an Extension Program Specialist at the Texas A&M AgriLife Extension, to explain.Not oxidation , but quinones"are responsible for bitter flavor,” Nesbitt says.
Our blind taste test. I don't want to eat that avocado on the right, even though I know it doesn't taste *that* different."On the other hand," Focht reminded me,""—like chilling injury, which is browning or blackening of the skin and browning or graying of internal flesh due to low-temperature storage—"and it's important to distinguish between [these] and phenolic response.
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