Orange Essential Oil
Orange - specifically, sweet orange - refers to the citrus tree Citrus sinensis and its fruit. The orange is a hybrid of ancient cultivated origin, possibly between pomelo (Citrus maxima) and tangerine (Citrus reticulata). It is a small tree, growing to about 10 m tall, with thorny shoots and evergreen leaves 4-10 cm long. Oranges originated in southeast Asia, in either India, Vietnam or southern China. The fruit of Citrus sinensis is called sweet orange to distinguish it from Citrus aurantium, the bitter orange.
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Orange |
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Cultivation and uses
Ambersweet oranges
Orange cultivation is a major business and an important part of the economies of the US, Florida and California, many Mediterranean countries, Romania, South Africa, China, and the Riverina district around the Murray River in Australia.
Oranges are widely grown in warm climates worldwide, and the flavors of orange vary from sweet to sour. The fruit is commonly peeled and eaten fresh, or squeezed for its juice. It has a thick bitter rind that is usually discarded, but can be processed into animal feed by removing water using pressure and heat. It is also used in certain recipes as flavoring or a garnish. The outer-most layer of the rind is grated or thinly veneered with a tool called a zester, to produce orange zest which is popular in cooking because it has a similar flavor to the fleshy inner part of the orange. The white part of the rind, called the pericarp or pith, is a source of pectin.
Oranges and orange juice
Products made from oranges include:
- Orange juice, one of the commodities traded on the New York Board of Trade. Brazil is the largest producer of orange juice in the world, followed by Florida, USA.
- Sweet orange oil, a by-product of the juice industry produced by pressing the peel. It is used as a flavoring of food and drink and for its fragrance in perfume and aromatherapy.
Sweet orange oil consists of about 90% d-Limonene, a solvent used in various household chemicals, such as to condition wooden furniture, and along with other citrus oils in grease removal and as a hand-cleansing agent. It is an efficient cleaning agent which is environmentally friendly, and much less toxic than petroleum distillates. It also smells much more pleasant than other cleaning agents.
- The orange blossom, which is the state flower of Florida, is traditionally associated with good fortune, and was popular in bridal bouquets and headwreaths for weddings for some time. The petals of orange blossom can also be made into a delicately citrus-scented version of rosewater.
- Orange blossom honey, or actually citrus honey, is produced by putting beehives in the citrus groves during bloom, which also pollinates seeded citrus varieties. Orange blossom honey is highly prized, and tastes much like orange.
Cultivars
Blood oranges
All citrus trees are of the single genus Citrus, and remain largely interbreedable; that is, there is only one “superspecies” which includes lemons, limes and oranges. Nevertheless, names have been given to the various members of the citrus family, oranges often being referred to as Citrus sinensis and Citrus aurantium. All members of the genus Citrus are considered berries because they have many seeds, are fleshy, soft and derive from a single ovary.
The sweet orange was first grown in Spain, and is now the most common variety of orange cultivated. The sweet orange will grow to different sizes and colors according to local conditions, most commonly with ten carpels, or sections, inside.
A single mutation in 1820 in an orchard of sweet oranges planted at a monastery in Brazil led to the navel orange, also known as the Washington, Riverside or Bahia navel. A single cutting of the original was then transplanted to Riverside, California in 1870, creating a new market worldwide. The mutation causes a ’twin’ fruit, with a smaller orange embedded in the outer fruit opposite the stem. From the outside, the smaller, undeveloped twin leaves a formation at the top of the fruit, looking similar to the human navel. Navel oranges are almost always seedless, and tend to be larger than other sweet oranges. They are produced without pollination, through parthenocarpy.
The Valencia or Murcia orange is one of the sweet oranges used for juice extraction. It is a late-season fruit, and therefore a popular variety when the navel oranges are out of season.
The blood orange has streaks of red in the fruit, and the juice is often reddish. The mandarin orange is similar, but smaller and sweeter, and the scarlet navel is a variety with the same diploid mutation as the navel orange.
Sectioned navel orange. The underdeveloped twin is located on the bottom right.
Etymology
Main article: Orange (word)
Orange derives from Sanskrit nara?ga? “orange tree”, with borrowings through Persian narang, Arabic naranj, Spanish naranja, Late Latin arangia, Italian arancia or arancio, and Old French orenge, in chronological order. The first appearance in English dates from the 14th century. The name of the colour is derived from the fruit, first appearing in this sense in the 16th century.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article “Orange (fruit)”.