Analysis of the Hydrosol Aroma of Indian Oregano

Verma, Ram S.; Padalia, Rajendra C.; Chauhan, Amit

doi:10.4172/2167-0412.1000112

Cited by 17 publications

(14 citation statements)

References 17 publications

(14 reference statements)

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“…aqueous phase of hydrodistillation extract, are obtained as a byproduct during the essential oil manufacturing process. 7) Hydrosol mainly consists of water with some aroma components, whereas essential oil consists of highly concentrated volatile components. 8) It has also been shown that hydrosol selectively contains polar volatile components.…”

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confidence: 99%

Enantioselective GC–MS analysis of volatile components from rosemary (Rosmarinus officinalis L.) essential oils and hydrosols

Tomi

Kitao²,

Konishi

et al. 2016

Bioscience, Biotechnology, and Biochemistry

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Essential oils and hydrosols were extracted from rosemary harvested in different seasons, and the chemical compositions of volatile components in the two fractions were analyzed by gas chromatography-mass spectrometry (GC-MS). Enantiomers of some volatile components were also analyzed by enantioselective GC-MS. Classification of aroma components based on chemical groups revealed that essential oils contained high levels of monoterpene hydrocarbons but hydrosols did not. Furthermore, the enantiomeric ratios within some volatile components were different from each other; for example, only the (S)-form was observed for limonene and the (R)-form was dominant for verbenone. These indicate the importance of determining the enantiomer composition of volatile components for investigating the physiological and psychological effects on humans. Overall, enantiomeric ratios were determined by volatile components, with no difference between essential oils and hydrosols or between seasons.

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confidence: 99%

Enantioselective GC–MS analysis of volatile components from rosemary (Rosmarinus officinalis L.) essential oils and hydrosols

Tomi

Kitao²,

Konishi

et al. 2016

Bioscience, Biotechnology, and Biochemistry

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“…e flowers are purple, long, produced in erect spikes [10]. Indeed, the tribal people of western Himalayan belt use O. vulgare against flatulence, diaphoresis, and cough, to promote menstrual discharge, energize the body, increase appetite, and as a tonic [11,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Biological Efficacy of Essential Oils and Plant Extracts of Cultivated and Wild Ecotypes of Origanum vulgare L.

Jan

Rashid

Allah

et al. 2020

BioMed Research International

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Current study describes discrepancy in biological efficacy of methanolic and ethanolic extracts and essential oil procured from cultivated and wild accessions of Origanum vulgare. Simultaneously, quantification of carvacrol, thymol, caryophyllene, ocimene, and terpinen-4-ol contents was determined via GC-MS and GC in both accessions. The results revealed significantly a higher antioxidant potential by methanolic extracts displaying IC50 of 19.9 μg/ml compared to essential oil with IC50 of 10 μg/ml, and ethanolic extracts were found to be less effective even at the concentration of 3 μg/ml. However, essential oil from wild and cultivated accessions of O. vulgare exhibited significantly high antimicrobial activity against all 39 bacteria, 16 fungi, and 2 yeast species tested due to higher concentrations of carvacrol and thymol as revealed by GC analysis. Inhibition of tyrosinase activity in a C6 cell line displayed 81.0%–87.0% depigmentation potential of the methanolic extracts, while ethanolic extracts revealed a maximum of 88.54–99.02% inhibition of reactive oxygen species (ROS) in H2O2-treated cells. Hence, the study determines efficacy of essential oil against microbial pathogenesis, methanolic extracts as potent depigmentation agents, and ethanolic extracts as potent free radical scavenger.

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“…Moreover, the chemical composition of hydrosols was a subject for only a few research studies [6][7][8][9][10][11][12]. The hydrosols are nearly free of irritating components such as the terpene hydrocarbons [10].…”

Section: Introductionmentioning

confidence: 99%

“…The hydrosols are nearly free of irritating components such as the terpene hydrocarbons [10]. They include traces of essential oils and watersoluble components [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…They include traces of essential oils and watersoluble components [13,14]. Despite this low level of active principles, hydrosols have some interesting pharmacological and biological activities that make them useful for the food and cosmetic industry [10,15]. In addition, hydrolates also find application in agriculture to fertilize the soil and against fungi, mildew, and insects [6].…”

Section: Introductionmentioning

confidence: 99%

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Insecticidal effect of Mentha pulegium L. and Mentha suaveolens Ehrh. hydrosols against a pest of citrus, Toxoptera aurantii (Aphididae)

et al. 2015

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Essential oils proved their efficiency as natural insecticides to fight many pests of stored products and crops whereas the hydrosols have not been evaluated yet. The objective of this work is to assess the insecticidal effect of hydrosols extracted from Mentha suaveolens Ehrh. and Mentha pulegium L. toward an insect pest of citrus, Toxoptera aurantii (Homoptera, Aphididae). The extraction of hydrosols was carried out by hydro-distillation using Clevenger apparatus and then the chemical composition was identified by gas chromatography coupled with mass spectrometry. The chemical composition of two hydrosols revealed the abundance of hydrophilic and oxygenated compounds as piperitenone oxide and carvacrol. Different concentrations of each hydrosol were separately diluted in distilled water and applied topically to aphids. The results of this investigation have shown a high insecticidal effect, and the M. suaveolens hydrosol is more effective against citrus pests than that of M. pulegium L. Consequently, these natural compounds can be used in the management of aphids on citrus.

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Analysis of the Hydrosol Aroma of Indian Oregano

Abstract: Freshly harvested plant materials were hydro-distilled for 3 hrs in a slightly modified all glass Clevenger's apparatus in which the recycling of distillate was stopped and diverted to a collection flask so that essential

Cited by 17 publications

References 17 publications

Enantioselective GC–MS analysis of volatile components from rosemary (Rosmarinus officinalis L.) essential oils and hydrosols

Enantioselective GC–MS analysis of volatile components from rosemary (Rosmarinus officinalis L.) essential oils and hydrosols

Biological Efficacy of Essential Oils and Plant Extracts of Cultivated and Wild Ecotypes of Origanum vulgare L.

Insecticidal effect of Mentha pulegium L. and Mentha suaveolens Ehrh. hydrosols against a pest of citrus, Toxoptera aurantii (Aphididae)

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