Citronellal


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Citronellal

 

(also 3,7-dimethyl-6-octenal), the terpene aldehyde (CH3)2C═CH(CH2)2CH(CH3)CH2CHO. Citronellal is a colorless liquid with a pleasant, lemonlike odor. Insoluble in water, it is soluble in alcohol and ether. It has a boiling point of 206.9°C and a density of 0.855 g/cm3 at 20°C.

Citronellal is a component of many essential oils. It is obtained from these oils—particularly citronella oil—by rectification or by a process yielding a bisulfite derivative. Citronellal is used as an ingredient of perfumes and as a raw material in the production of fragrant substances, such as citronellol and hydrocitronellal.

References in periodicals archive ?
Johns Hopkins researchers revealed how mosquitoes and other insects taste DEET - a man-made compound that's been the most widely used insect repellent for more than 50 years - and smell citronellal, a commonly used botanical repellant.
One group of rats (Group CIT-CONT) was exposed to 132 [micro]l citronellal that was reapplied after every 4 subjects.
In this context, citronellal (CT) is a monoterpene present in the essential oil of several aromatic plants, such as Corymbia citriodora and plants of the gender Cymbopogon, as C.
Caryophyllene [beta] and citronellal of Lemon balm were affected by the treatments (Table 2).
b] blepharophylla [alpha]-Pinene(1E) 931 932 Camphene 944 946 [beta]-Pinene (1F) 977 974 Myrcene 988 988 [beta]-Cymene 1022 1020 Limonene 1028 1024 Citronellal 1150 1148 0.
But, he says, the widely promoted 'Citrosa' geranium, which is the so-called "Mosquito Plant," appears to contain only small amounts of citronellal and is not likely to be any more effective as a mosquito repellent than other rose geraniums.
The control group had 132 [[micro]liter] of citronellal (citronella), reapplied after every 4 subjects.
In preliminary lab studies, the most potent have been clove oil and citronellal, which is derived from sources such as lemons and lemon grass and is the active ingredient in the citronella candles common around summer picnic tables.
neesiana fruit, such as Z-citral, eucalyptol, citronellal, [alpha]-pinene and [beta]-pinene, are reported to possess potential antimicrobial activity against Staphylococcus aureus and Candida albicans at non-cytotoxic doses in human keratinocytes (Comai et al.
2010), however, quantitative differences were observed for citronellal, geraniol, citronellol and limonene.
Classes of oil components in various fertilizer treatments revealed that oxygenated monoterpenes (rosefuran, linalool, citronellal, isogeranial, rosefuran epoxide, neral, geranial, methyl geranate, geranyl acetate) constituted the highest level of components (73.