Grapefruit Oil

Grapefruit Oil Basic information
Product Name:Grapefruit Oil
Synonyms:Grapefruit oil,coldpressed;Oil grapefruit Type 5 fold;GRAPEFRUIT OIL, EXPRESSED (CITRUS PARADISI MACF.);FEMA 2530;GRAPEFRUIT DERIVATIVES;GRAPEFRUIT OIL, FLORIDA;GRAPEFRUIT OIL;CITRUS GRANDIS (GRAPEFRUIT) PEEL OIL
CAS:8016-20-4
MF:
MW:0
EINECS:
Product Categories:Alphabetical Listings;Essential OilsFlavors and Fragrances;Flavors and Fragrances;G-H
Mol File:Mol File
Grapefruit Oil Structure
Grapefruit Oil Chemical Properties
Boiling point 171 °C
density 0.85 g/mL at 25 °C
refractive index n20/D 1.475
FEMA 2530 | GRAPEFRUIT OIL, EXPRESSED (CITRUS PARADISI MACF.)
Fp 131 °F
Odorat 100.00 %. grapefruit
Odor Typecitrus
optical activity[α]20/D +92°, neat
EPA Substance Registry SystemOils, grapefruit (8016-20-4)
Safety Information
Hazard Codes Xi
Risk Statements 10-36/37/38
Safety Statements 26
RIDADR UN 1993 3/PG 3
WGK Germany 2
RTECS RI7199000
HazardClass 3.2
PackingGroup III
Hazardous Substances Data8016-20-4(Hazardous Substances Data)
toxicityBoth the acute oral UD 5 () value in rats and the acute dermal UD 50 value in rabbits exceeded 5 g/kg (Moreno, 1973).
MSDS Information
Grapefruit Oil Usage And Synthesis
DescriptionA tree, 9 to 15 m (30 to 50 ft.) tall, having a rounded and conical head, ovate glabrous leaves, and smooth, gray-brown bark. The flowers are large, white, and fragrant. The fruits are large, lightlemon or orange with a thin rind and grayish-yellow or pink flesh. Historically and botanically, the origin of the grapefruit is uncertain and appears to have developed from the Shaddok variety native to the West Indies. The plant is cultivated in the United States (Florida, California, Texas), East Asia, West Indies, Brazil, and Nigeria. The Citrus decumana variety yields the largest fruits (up to 10 kg). The parts used are the fruit and peel. Grapefruit has a fresh, citrus-like odor and a taste reminiscent of sweet and bitter orange to some degree.
Grapefruit essential oil is the volatile oil obtained by cold expression of the fresh peels of the fruit. The oil is a yellow, sometimes reddish liquid (often showing a flocculent separation of waxy material) with a pleasant citrus-like odor and flavor.
Its main constituents include limonene (90%), 2 to 3% volatile fraction containing oxygen compounds and sesquiterpenes, 7 to 8 % waxy fraction, C8 and C10 aldehydes, geraniol, cadinene, small amounts of citral and dimethyl anthranilate, and acids. A terpeneless oil can be prepared by vacuum distillation, yielding a more soluble and more stable concentrated oil. However, a certain amount of terpenes must be left in the oil to retain the characteristic freshness of citrus flavor.
A lower grade of essential oil that does not have application in flavor work is also obtained by steam distillation of the crushed peels or even from seeds.
The derivatives are juice and extract. Naringin, a bitter, white, crystalline glucoside, is found in the blossoms and the flavedo of the fruits. Naringin yields rhamnose and naringenin (C15H12O5) on hydrolysis. A naringin extract, prepared from the expressed peels, is used in flavors.



Chemical PropertiesGrapefruit oil is the volatile component obtained by expression of the fresh peels of the fruit It has a pleasant citrus-like odor and favor A low-grade oil is obtained by steam distillation of the crushed peels or even from seeds, but is not used in favor work In the United States, grapefruit oil is produced mainly in Florida and to a lesser extent in Texas and California.
Chemical PropertiesGrapefruit oil is obtained by cold-pressing of the outer peels of the fruits of Citrus x paradisi Macfad. (Rutaceae). It is a greenish-yellow liquid, with an odor resembling that of sweet orange oil, but more herbaceous and bitter.
d2020 0.852–0.860; n20D 1.4740–1.4790; α20D +91 ° to +96 °; total carbonyl content calculated as decanal of 0.28–2%; evaporation residue: max. 10.0%.
Usually, grapefruit oil contains more than 90% (+)-limonene (92–96%). Constituents determining the typical sensory properties are present only in low concentrations, for example, octanal (0.2–0.8%), decanal (0.1–0.6%), and 0.01–0.8% nootkatone, which is primarily responsible for the characteristic aroma of grapefruit oil. The sensory properties vary with the grapefruit cultivar (e.g., white/pink grapefruits) used for the oil production.
The main producer of the oil is still the United States (Florida), although the grapefruit cultivation declined drastically after the hurricanes in 2004/2005. Additional oil producers are Cuba, Israel, Argentina, Mexico, Southern Africa, and so on. Worldwide production was estimated at ~2000 t/yr in 2001/2003.
Grapefruit oil is used mainly for flavoring fruit beverages. As with bergamot oil, the use of cold-pressed grapefruit oil is restricted in perfume compositions due to a content of furocoumarins.



Physical propertiesIts color is yellow, sometimes reddish (often showing a focculent separation of waxy material) It is soluble in most fxed oils, often with opalescence or cloudiness It is slightly soluble in propylene glycol and insoluble in glycerin It may contain.
OccurrenceFound in the fresh peel of the fruit Citrus paradisi Macfayden (Fam. Rutaceae).
Usesgrapefruit oil is used as a fragrance and also as an active component with anti-irritant properties. grapefruit oil is indicated for work with the lymphatic system.
DefinitionExtractives and their physically modified derivatives. Citrus paradisi, Citrus.
PreparationBy expression of the fresh peel of the fruit.
Essential oil compositionThe main constituent of grapefruit oil expressed is limonene
Grapefruit Oil Preparation Products And Raw materials
METHYL ISOCYANOACETATE TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III) GRAPEFRUIT PHENYLSELENOL Tris(2,4-pentanedionato)chroMiuM(III) DICHLORO(ETHYLENEDIAMINE)PLATINUM(II) Grapefruit Oil SALCOMINE 1,1,3,3-TETRAMETHYLBUTYL ISOCYANIDE Tosylmethyl isocyanide COBALT(II) ACETYLACETONATE Cupric acetylacetonate Ethyl isocyanoacetate TERT-BUTYL ISOCYANIDE Ferric acetylacetonate COBALT ETHYLENE DIAMINE CHLORIDE Benzyl isocyanide TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III)

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