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.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

Mentioned in

References in periodicals archive

pseudolimon essential oil whereby the main constituents were limonene (47.07%), cuminal (11.41%), eugenol (10.17%), b-pinene (5.23%), styrene glycol (3.49%), -terpinene (3.67%), 3-isobutyl-1-cyclohexene (2.57%), caryophyllene (2.04%), menthene (1.53%), a-pinene (1.01%), p-cumic aldehyde (1.47%), a- isopropylbenzyl alcohol (1.56%), caryophyllene Oxide (1.94%) and Eugenyl acetate (1.29%).

Evaluation of Chemical Composition and Biological Activities of Citrus pseudolimon and Citrus grandis Peel Essential Oils

Thereafter, the leaf and berry essential oil compositions from various mediterranean origins have also been investigated such as in Turkey (Ozek et al., 2000), France (Bradesi et al., 1997), Italy (Pirisino et al., 1996), Portugal (Boelens and Jimenez, 1991), Spain (Boelens and Jimenez, 1992), 1,8-cineole (18.3%), linalool (16.3%) and myrtenyl acetate (14.5%), limonene (5.7-43.4% and 6.2-44.2%), 1,8-cineole (5.9-26.6% and 8.7-30.40%), respectively.

Variation in Myrtus communis L. essential oil composition and its antibacterial activities components

Limonene encapsulation in freeze-drying of gum Arabicsucrose-gelatine systems.

Encapsulacion de sabores de d-limoneno mediante secado por aspersion: efecto de la adicion de emulsificantes

Chemotaxis of adult psyllids to volatile terpenes Obviously non significant percentage of female psyllids showed chemotaxis to individual tested terpenes of limonene (P=0.80183) or AY- pinene (P=0.84361) (Table II).

Chemotaxis of Adults of the Asiatic Citrus Psyllid Diaphorina citri Kuwayama to Volatile Terpenes Detected from Guava Leaves

Of the 30 listed compounds, the following had the highest percentages: [alpha]-pinene (20.58% to 10.91%), camphene (22.38% to 2.86%), [beta]-pinene (6.73% to 3.96%), [beta]-myrcene (1.09% to 2.51), [delta]-[beta]-carene (4.36% to 16.77%), [alpha]-terpinene (0.9% to 4.22%), [beta]-phellandrene (0.00% to 13.36%), limonene (20.16% to 0.00%), terpineol (0.33% to 5.35%), and bomyl acetate (9.79% to 0.68%).

Characterization and variation of essential oil from Pinus taeda and antimicrobial effects against antibiotic-resistant and -susceptible Staphylococcus aureus

The effect of pH on limonene biotransformation was studied by dissolving YM culture medium in a 0.1 M HCl at pH values of 2.5, 4 and 5.5 and also a 0.1 M NaOH at pH values of 7.5, 10 and 12.5.

Microbial biotransformation of (R)-(+)-limonene by using two novel Pseudomonas sp

However, when R-limonene is oxidized, it includes limonene hydroperoxides, which Dr.

Oxidized limonene: new culprit in allergic dermatitis

haworthi revealed the presence of the monoterpenes [alpha]-pinene, [beta]-pinene, myrcene, and limonene, which were identified by comparison of those of authentic reference samples (Figure 1, Table 1).

The tergal gland secretion of the two rare myrmecophilous species Zyras collaris and Z. haworthi (Coleoptera: Staphylinidae) and the effect on Lasius fuliginosus

Ashraf et al [6] analyzed the dill seed essential oil by GLC and found the oil to be rich in carvone (52.25%), dill apiole (28.28%) and limonene (9.34%).

CHEMICAL COMPOSITION AND INSECTICIDAL ACTIVITY OF THE ESSENTIAL OIL OF ANETHUM GRAVEOLENS L

The chromatographic analysis carried out for the essential oil allowed the identification of citral (neral + geranial isomers) in the AndrE da Rocha population, ledene and caryophyllene in Bom Jardim da Serra and limonene, borneol, 1,3,8-menthatriene and 1,5,8 p-menthatriene in Santa Lucia as major compounds.

Effect of different liming levels on the biomass production and essential oil extraction yield of Cunila galioides Benth/Efeito de diferentes niveis de calagem na producao de biomassa e no rendimento de extracao de oleo essencial de Cunila galioides Benth