Why are some oranges purple?

Blood oranges are a natural mutation of "regular" oranges. They produce anthocyanin, a pigment that runs the red-blue-purple gamut depending on the pH of the fruit. A similar mutation found in navel oranges produces the Cara cara navel orange. read more

Blood oranges are a natural mutation of "regular" oranges. They produce anthocyanin, a pigment that runs the red-blue-purple gamut depending on the pH of the fruit. A similar mutation found in navel oranges produces the Cara cara navel orange. read more

A mother has voiced her fear after scientific tests have failed to explain why oranges are turning an inexplicable tone of purple in her house. Angela Postle, from Maroochydore in southeast Queensland, stumbled upon the bizarre spectacle last month after slicing some oranges she bought from a local supermarket. read more

Having sent the purple oranges for testing, Postle went to another supermarket to purchase some fresh orange oranges, but that batch also turned purple before long. As Postle added, “We need answers, this isn’t normal or natural. read more