Limonene

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limonene

[′lim·nə‚lēn]
(organic chemistry)
C10H16 A terpene with a lemon odor that is optically active and is found in oils from citrus fruits and in oils from peppermint and spearmint; a colorless, water-insoluble liquid that boils at 176°C.

Limonene

 

1-methy1–4-isopropenylcyclohexene-1, a terpene hydrocarbon; colorless liquid with a lemony odor. Oxidizes readily in air. Boiling point, 176°C; density, 0.8411 g/cm3 at 20°C. Limonene exists in two optically active (+) and (-) forms, as well as a (±)-form (racemic mixture) commonly called dipentene.

Limonene is a component of many essential oils. For example, citrus oils contain mainly (+)-limonene (approximately 90 percent), which may be extracted by rectification processes. Dipentene is also found in turpentine. Limonene is used as an odoriferous substance in perfume and cosmetics manufacture.

References in periodicals archive ?
Although it is possible to explain a large proportion of the variability in personal exposure for compounds found primarily in the home (e.g., p-dichlorobenzene, d-limonene), neither residential measurements nor our time-weighted model explains more than half the observed variability in exposure to compounds with both indoor and outdoor sources (e.g., benzene).
Atmospheric oxidation of biogenic hydrocarbons: Reaction of ozone with [Beta]-pinene, d-limonene and transcaryophyllene.
studies show activity of D-limonene against pancreatic, stomach, colon,
Liberibacter asiaticus induces the release of [beta]-ocimene and D-limonene in C.
axyridis beetles that chose the 12.5 [micro]L/L D-limonene + apple tree treatment was significantly greater than the number of beetles that chose the apple tree + distilled water treatment at 60 min, regardless of whether or not aphids had been present anywhere (Fig.
Commercial grade fish gelatin was obtained from Beijing Hangyang Health Technology Co., Ltd (China), water-soluble chitosan (90% degree of deacetylation) was purchased from Shanghai Yuanye Bio-Technology Co., Ltd (China), and D-limonene (purity [greater than or equal to] 95%) was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd (China).
In addition, based on threshold values obtained, an additional 6 compounds (OAV < 1) had higher OAVs in scented tea than in nonscented tea, including monoterpenoids D-limonene, [beta]-ocimene, and (E)-linalool oxide A (furanoid).
Rezende et al., "D-limonene exhibits superior antihyperalgesic effects in a beta-cyclodextrin-complexed form in chronic musculoskeletal pain reducing Fos protein expression on spinal cord in mice," Neuroscience, vol.
Oral administration of d-limonene controls inflammation in rat colitis and displays anti-inflammatory properties as diet supplementation in humans.
In conjunction, the partnership will focus on the local supply and production of d-limonene (citrus terpenes) for applications in new and existing wells as well as other industrial and commercial applications.
Upon GC/MS analysis essential oil contained thirty compounds eluted on a DB-1-1022 column such as 1R-a-Pinene, b-Pinene, D-Limonene, b-Phellandrene, b-Terpinyl acetate, T-Terpinene, p-Cymene, Dehydro-p-cymene, cis-b-Terpineol, Trans-p-Metha-2,8-dienal, 4-Terpineol, Trans-dihydrocarvone, a-Terpineol, D-Carvone, Carvone, Cis-p-Menth-1-en-3-ol, 2,3-Epoxycarene, L-cis-Sabinol, p-Cymen-8-ol, cis-Carveol, Estragole, 2-Pinen-4-one, 2-Allyl-4-methyl phenol, O-tert-butyl Phenol, Thymol, Carvacrol, Elemicin, Myristicin, Apiol, Methoxyeugenol and Limonene-6-ol, pivalate (Table 5).
Encapsulation of d-limonene flavors using spray drying: Effect of the addition of emulsifiers