Essential Oil Compositions of<i>Thymus kotschyanus</i>Boiss. Obtained by Hydrodistillation and Microwave Oven Distillation

Khanavi, Mahnaz; Hajimehdipoor, Homa; Emadi, Fatemeh; Khandani, N Kalantari

doi:10.1080/0972060x.2013.764159

Cited by 15 publications

(7 citation statements)

References 18 publications

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“…However, the T. vulgaris essential oil in this study belongs to a geraniol-rich chemotype. It can also be noted that differences in exogenous and endogenous factors affecting the chemical profiles of Thymus essential oils, including geographical location, genetic make-up and growth stages of plants, and extraction method [24,31,36,37], have resulted in the above-mentioned differences. The insecticidal efficiency of essential oils was related to their compounds [9,46].…”

Section: Discussionmentioning

confidence: 99%

Chemical Profiles and Insecticidal Potential of Essential Oils Isolated from Four Thymus Species against Rhyzopertha dominica (F.)

Ebadollahi

Naseri

Abedi

et al. 2022

Plants

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Although chemical pesticides have been efficiently used to manage insect pest, their overuse has led to environmental contamination and threats to human health, enticing researchers to introduce eco-friendly and effective agents. In this study, the insecticidal effectiveness of essential oils isolated from Thymus species, including T. eriocalyx, T. kotschyanus, T. fallax, and T. vulgaris, was evaluated against the adults of Rhyzopertha dominica. The terpenes p-cymene, 1,8-cineole, linalool, α-terpineol, and carvacrol were the prominent compounds in the hydrodistilled essential oils. All essential oils produced significant fumigant at 24, 48, and 72-exposure times. The energy reserves protein by all essential oils, glycogen by T. kotschyanus and T. vulgaris, and lipid by T. fallax and T. vulgaris were significantly decreased compared to control. All essential oils except T. vulgaris affected the amylolytic and proteolytic activity of the pest. The pest increased the α- and β-esterase enzyme activity in response to the essential oils. Nutritional indices of adults were also affected by essential oils, in which feeding deterrence index was calculated from 20.41% to 61.11%. Accordingly, based on lethal and extensive sub-lethal insecticidal activities, T. eriocalyx, T. kotschyanus, T. fallax, and T. vulgaris essential oils can be considered as efficient agents for R. dominica management.

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Section: Discussionmentioning

confidence: 99%

Chemical Profiles and Insecticidal Potential of Essential Oils Isolated from Four Thymus Species against Rhyzopertha dominica (F.)

Ebadollahi

Naseri

Abedi

et al. 2022

Plants

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“…The most important advantages of this method include more efficient heat flow, reduced extraction time, lower solvent utilization, higher quality of extracted products, and more environmentally friendly method ( Nitthiyah et al., 2017 ). MAHD process, from published studies, successfully used microwaves to extract essential oils from different aromatic plants ( Golmakani and Rezaei, 2008 ; Wu Wang et al., 2010 ; Karakaya et al., 2012 ; Khanavi et al., 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted hydrodistillation extraction of essential oil from coriander seeds and evaluation of their composition, antioxidant and antimicrobial activity

Ghazanfari

Mortazavi

Yazdi

et al. 2020

Heliyon

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Coriander seeds essential oil is used in food preparation, perfume, cosmetics and pharmaceuticals. In this study, extraction of essential oil from coriander seeds was done by hydrodistillation (HD) and microwave assisted hydrodistillation (MAHD) methods. Chemical composition, total phenol contents, antimicrobial and antioxidant properties of essential oils were measured and the results were compared between HD and MAHD methods. Scanning electron microscopy (SEM) results showed that the essential oils had inhibitory effect on the bacterial membrane and cell wall. Results showed that total phenol contents and antioxidant activity increased under heat and microwave conditions. Coriander seeds essential oil had a very strong effect on Candida albicans . Gram-positive bacteria were more sensitive to the essential oil of coriander seeds than Gram-negative bacteria. The essential oil extracted by MAHD showed better antimicrobial activity, higher phenols yield and antioxidant activity. According to the results of GC-MS, linalool was the most common constituent of both essential oils.

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“…The HD method has several drawbacks such as long extraction time, high energy use and so on. Hence, in order to increase the extraction yield, save energy and time extraction, new approaches is improving, in recent years, the using of Microwave-assisted hydrodistillation (MAHD) method is increasing, especially for extraction (Golmakani and Rezaei 2008;Khanavi et al 2013). By using microwave energy, the materials reach their boiling point rapidly, so leading to short extraction or distillation time and save energy (Khanavi et al 2013).…”

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confidence: 99%

Comparison of essential oil composition and antimicrobial activity of Coriandrum sativum L. extracted by hydrodistillation and microwave-assisted hydrodistillation

et al. 2014

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Coriander (Coriandrum sativum L.), is an annual herb in the Apiaceae family which disperses in Mediterranean and Middle Eastern regions. The Coriander essential oil has been used in food products, perfumes, cosmetics and pharmaceutical industries for its flavor and odor. In Iran, fruits of Coriander used in pickle, curry powders, sausages, cakes, pastries, biscuits and buns. The aim of this study was to investigate microwave radiation effects on quality, quantity and antimicrobial activity of essential oil of Coriander fruits. The essential oils were obtained from the Coriander fruits by hydrodistillation (HD) and Microwave-assisted hydrodistillation (MAHD) then, the oils were analyzed by GC and GC-MS. Antimicrobial activities of essential oils were evaluated against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Candida albicans by microdilution method. The results indicated that the HD and MAHD essential oils (EO) were dominated by monoterpenoids such as linalool, geranyl acetate and γ-terpinene. The major compound in both EO was linalool which its amount in HD and MAHD was 63 % and 66 %, respectively. The total amount of monoterpenes hydrocarbons in HD EO differ significantly with the amount in MAHD EO (12.56 % compare to 1.82 %). HD EO showed greater activity against Staphylococcus aureus and Candida albicans than MAHD EO. Moreover, their activities against Ecoli and P. aeruginosa were the same with Minimum Inhibitory Concentration (MIC) 0.781 and 6.25 μL mL(-1), respectively. By using MAHD method, it was superior in terms of saving energy and extraction time, although the oil yield and total composition decrease by using this method.

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Essential Oil Compositions ofThymus kotschyanusBoiss. Obtained by Hydrodistillation and Microwave Oven Distillation

Cited by 15 publications

References 18 publications

Chemical Profiles and Insecticidal Potential of Essential Oils Isolated from Four Thymus Species against Rhyzopertha dominica (F.)

Chemical Profiles and Insecticidal Potential of Essential Oils Isolated from Four Thymus Species against Rhyzopertha dominica (F.)

Microwave-assisted hydrodistillation extraction of essential oil from coriander seeds and evaluation of their composition, antioxidant and antimicrobial activity

Comparison of essential oil composition and antimicrobial activity of Coriandrum sativum L. extracted by hydrodistillation and microwave-assisted hydrodistillation

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