Where does the orange tree come from? What is the difference between bitter orange and sweet orange? characteristics of navel orange and blood orange

The orange tree was originally grown in China and was planted in Asia for more than 4000 years. Later, it was introduced to Persia, Egypt, Spain and North Africa by Arabs. In fact, orange was transformed by Arabs from Sanskrit nagarunga narandj. Oranges are now one of the most important commercial fruits in the world. Oranges are mostly classified into bitter oranges and sweet oranges, but there are more classifications because of their different varieties. Have you ever eaten Jinxiang orange, a new citrus variety, Tainong No. 1?

Bitter orange (bitter orange), also known as bergamot, is considered to be the ancestor of sweet orange. Bergamot is like the finger of Buddha as its name implies. Bergamot, also known as flower orange, is an ancient citrus variety, native to India and cultivated in southern China, mostly used as an ornamental or medicine. Bergamot, an evergreen shrub, has prickly branches and white flowers. After the fruit is ripe, the stigma is often deformed into fingers. The front end of the fruit is also cracked like the palm of the hand, the appearance is bright yellow, very beautiful, and the fresh fruit has a mellow and rich aroma.

Sweet orange (sweet orange) is an evergreen tree. The crown is round, the branches and leaves are dense, there are often thorns on the new branches, the leaves are ovate or long ovate in shape, feel leathery, the surface is dark green and the back is light green, the petiole is long, and the flowers are clustered in leaf axils or branches; the flowers are white racemes, full of fragrance, bloom in March, and the petals roll back when they bloom. The shape of the fruit is mostly spherical, but also oblong or oblate, with orange skin and pulp, about 10 petals, soft and juicy, sweet and fragrant.

Valenciva orange (Valencia orange) is native to the island of Azov in Portugal, mainly produced in the United States, Spain and other countries. Valencia orange is also known as Xiangding in Taiwan. Its shape and skin color are similar to those of willow, but its sweetness, acidity and aroma are stronger than those of willow or other citrus. At present, it grows all over the world, including South America, South Africa and Australia.

Navel orange (navel orange) is a crop of Rutaceae. Navel orange is called navel orange because there is an obvious by-fruit protruding conical like navel in the fruit. Its origin in Brazil is currently cultivated in Spain, Israel, Australia, South America and South Africa. Navel orange can be said to be the best and most difficult variety of sweet oranges in the world, and its unit price is the highest among oranges. Navel oranges are very popular because of their large fruit shape, thin flesh and easy peeling and no seeds.

Blood orange (blood orange) is a mixed plant, which first appeared in Europe in 1850. Fresh blood orange is red or orange, with bright red stripes, and sweet and juicy with a fragrant aroma. Several varieties are slightly oval. Blood orange is mostly seedless and is mainly grown in Spain, Italy and North America.

Oranges often have some aliases with trademarks, such as Sunkist, Jaffa. Outspan is a large-scale agricultural company in California, USA, under the name of Sunkist, a popular orange juice drink, it has since become synonymous with American willow, Jaffa Yaffa orange, Israeli orange is a large citrus produced in Israel Outspan is a trademark of a South African agricultural company, these trademarks actually include several different oranges And they all meet the quality specifications established by some organizations. at present, the largest orange producers in the world are Brazil, North America, China, Spain and Mexico. 14% of the oranges in the world are from Florida in the United States.

Nutritive composition

Liu orange has high nutritional value, and its composition varies according to variety, but generally speaking, water content is about 60%, protein 0.6%, inorganic salt 0.4%, fiber 0.2%, sugar 6%, as well as minerals and vitamins. Every 100g of willow, about 46 calories, trace vitamin A, vitamin B1 0.07mg, vitamin B2 0.04mg, vitamin C 60mg.