The distinctive dark flesh color is due to the presence of anthocyanins, a family of antioxidant pigments common to many flowers and fruit, but uncommon in citrus fruits. Chrysanthemin (cyanidin 3-O glucoside) is the main compound found in red oranges. The flesh develops its characteristic maroon color when the fruit develops with low temperatures during the night. Sometimes there is dark coloring on the exterior of the rind as well, depending on the variety of blood orange. The skin can be tougher and harder to peel than that of other oranges.
The Cara cara navel, or red-fleshed navel orange is an early-to-midseason navel orange believed to have developed as a cross between the Washington navel and the Brazilian Bahia navel. This medium sized navel is sweet and low in acid. The flavor is more complex than most navel varieties and has been described as evoking notes of cherry, rose petal, orange, and blackberry. Californian fruits produce fruits from late November and are available through April.
Description and photos coming up in August 2016.
Description and photos coming up in August 2016.