The production of navel oranges requires strict climate. The places where navel oranges can be produced in the world are very limited, mainly concentrated in California and Spain in Europe, South Africa and Australia in the southern hemisphere, and Hunan-Guangxi-Jiangxi in China. Ganzhou is located in the dominant area of navel orange production in China determined by the Ministry of Agriculture, located in the southern edge of the middle subtropical zone, with a typical subtropical warm climate.
Appearance characteristics
Gannan navel orange fruit is large and square, generally 250g each, with bright orange red, bright appearance, edible rate of 85%, red color, slightly darker than oranges in other places; The peel is smooth and delicate; The fruit is oval in shape.
quality characteristic
Gannan navel orange is crisp, slag-melting, sweet and has a strong orange flavor; The taste is sweet and sour.
Physical and chemical characteristics
Gannan navel orange contains more than 55% fruit juice, soluble solids 14%, up to 16%, sugar 10.5% ~ 12%, acid 0.8 ~ 0.9%, and solid-acid ratio15. Compared with American navel orange, the soluble solid content is 1 ~ 2 percentage points higher, and compared with Japanese navel orange, the soluble solid content is 1 ~ 3 percentage points higher.