Bitter Orange Peel. The rind of the fruit of Citrus vulgaris Risso (nat. ord. Rutaceae).

Habitat

Northern India; cultivated in subtropical countries.

Characters

In narrow, thin bands, or in quarters; epidermis of a dark, brownish-green color, glandular, and with very little of the spongy, white inner layer adhering to it; it has a fragrant odor, and an aromatic, bitter taste.

Composition

The chief constituents are - (1) A volatile oil, consisting mainly of Hesperidene, C10H16, with a small portion of Geraniol, C10H16O. (2) Three glucosides, Hesperidin, Isohesperidin and Aurantiamarin, the bitter principle. Both Bitter and Sweet Orange Peel contain a substance which reacts with iron salts and Tannic Arid.

Bitter Orange Peel is used in preparing Tinctura Cinchonae Composita and Tinctura Gentianae Composita.

Preparations

1. Extractum Aurantii Amari Fluidum. - Fluid Extract of Bitter Orange Peel. By maceration and percolation with Alcohol and water, and evaporation.

Dose, 1/2 to i fi. dr.; 2. to 4. c.c.

2. Tinctura Aurantii Amari. - Tincture of Bitter Orange Peel. Bitter Orange Peel, 200. By maceration and percolation with Alcohol and water to 1000.

Dose, 1 to 2 fl. dr.; 4. to 8. c.c.

Aurantii Dulcis Cortex. Sweet Orange Peel

The rind of the fresh fruit of Citrus Aurantium Linne (nat. ord. Rutaceae).

Habitat

As of the Citrus vulgaris.

Characters

Closely resembling Bitter Orange Peel, but having an orange-yellow color. It has a sweetish, fragrant odor, and an aromatic, slightly bitter taste.

Composition

As of the Bitter Orange Peel.

Preparations

x. Syrupus Aurantii. - Syrup of Orange. Sweet Orange Peel, 50; Precipitated Calcium Phosphate, 50; Sugar, 700. By boiling with Alcohol, mixture of the tincture (thus formed) in Sugar with Water, addition of Water and filtration to 1000.

Dose, as vehicle.

2. Tinctura Aurantii Dulcis. - Tincture of Sweet Orange Peel. Sweet Orange Peel, 200. By maceration and percolation with Alcohol to 1000.

Dose, 1 to 2 fl. dr.; 4. to 8. c.c.

Oleum Aurantii Corticis. - Oil of Orange Peel, a volatile oil obtained by expression from the fresh peel of either the Bitter Orange, Citrus vulgarus Risso, or the Sweet Orange, Citrus Aurantium Linne (nat. ord. Rutaceae).

Characters

A pale, yellowish liquid, having the characteristic, aromatic odor of Orange, and an aromatic and, when obtained from the Bitter Orange, somewhat bitter taste. Sp. gr., about 0.850.

Solubility

In four times its volume of Alcohol.

Impurities

Oil of Turpentine or other oils containing Pinene.

Oil of Orange Peel is contained in Spiritus Myrciae.

Preparations

1. Spiritus Aurantii. - Spirit of Orange. Oil of Orange Peel, 50; Deodorized Alcohol, 950. Dose, as vehicle.

2. Spiritus Aurantii Compositus. - Compound Spirit of Orange. Oil of Orange Peel, 200; Oil of Lemon, 50; Oil of Coriander, 20; Oil of Anise, 5; Deodorized Alcohol to 1000.

Dose, as vehicle.

3. Elixir Aromaticum. - Aromatic Elixir. Compound Spirit of Orange, 12; Syrup, 375; Precipitated Calcium Phosphate, 15; Deodorized Alcohol, Distilled Water, each, a sufficient quantity to make 1000. By solution of the Compound Spirit of Orange in Deodorized Alcohol, to 250; addition of Syrup and Precipitated Calcium Phosphate, and filtering, with Distilled Water to 1000.

Dose, as vehicle.

Oleum Aurantii Florum. Oil Of Orange Flowers. Oil Of Neroli

Synonym. - Oil of Neroli. A volatile oil distilled from fresh flowers of the Bitter Orange, Citrus vulgaris Risso (nat. ord. Rutaceae).

Characters

A yellowish or brownish, thin liquid, having a very fragrant odor of Orange Flowers, and an aromatic, somewhat bitter taste. Sp. gr., 0.875 to 0.890.

Solubility

In an equal volume of Alcohol.

Preparations

1. Aqua Aurantii Florum Fortior. - Stronger Orange Flower Water. Synonym. - Triple Orange Flower Water. Water saturated with the volatile oil of fresh Orange Flowers.

Dose, indeterminate.

2. Aqua Aurantii Florum. - Orange Flower Water. Stronger Orange Flower Water, 500; Distilled Water to 1000.

Dose, indeterminate.

3. Syrupus Aurantii Florum. - Syrup of Orange Flowers. Sugar, 850; Orange Flower Water to 1000.

Dose, indeterminate.

Action And Therapeutics Of Orange

The various preparations of the orange are used largely as flavoring agents. They are slightly bitter and stomachic. The aromatic elixir is an excellent flavoring agent and vehicle for liquid medicines.