Bioefficacy of essential oils of medicinal plants against housefly, Musca domestica L.

Background: The use of essential oils is receiving increasing attention worldwide, as these oils are good sources of several bioactive compounds. Nowadays essential oils are preferred over synthetic preservatives thanks to their antioxidant and antimicrobial properties. Several studies highlight the beneficial effect of essential oils extracted from medicinal plants to cure human diseases such as hypertension, diabetes, or obesity. However, to preserve their bioactivity, the use of appropriate extraction technologies is required. Method: The present review aims to describe the studies published so far on the essential oils focusing on their sources and chemical composition, the technologies used for their recovery and their application as antioxidants in food products. Results: The review has been structured in three parts. In the first part, the main compounds present in essential oils extracted from medicinal plants have been listed and described. In the second part, the most important technologies used for extraction and distillation, have been presented. In detail, conventional methods have been described and compared with innovative and green technologies. Finally, in the last part, the studies related to the application of essential oils as antioxidants in food products have been reviewed and the main findings discussed in detail. Conclusions: In summary, an overview of the aforementioned subjects is presented by discussing the results of the most recent published studies.

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An Evidence-Based Review of Antitussive Herbs Containing Essential Oils in Traditional Persian Medicine

Current Drug Discovery Technologies ◽

10.2174/1568009620666200421091245 ◽

2020 ◽

Vol 17 ◽

Cited By ~ 1

Author(s):

Ayda Hosseinkhani ◽

Bijan Ziaeian ◽

Kamran Hessami ◽

Mohammad Mehdi Zarshenas ◽

Ali Kashkooe ◽

...

Keyword(s):

Medicinal Plants ◽

Essential Oils ◽

Scientific Evidence ◽

Herbal Remedies ◽

Future Research ◽

Evidence Based ◽

Online Databases ◽

Persian Medicine ◽

Troublesome Symptom ◽

Traditional Persian Medicine

Background: Cough is one of the most common medical symptoms for which medical advice is sought. Although cough is a protective reflex responsible for clearing the airways from secretions and foreign bodies, it can be a troublesome symptom that causes discomfort to patients. Due to the increasing interest in herbal remedies in the both developed and developing countries, in the current study, we aimed to overview medicinal herbs containing essential oils used as antitussive agents according to the Traditional Persian Medicine [TPM] textbooks. We summarized the relevant scientific evidence on their possible pharmacological actions. Methods: To collect the evidence for treatment of cough or “seaal” [cough in ancient books] from TPM sources, five main medicinal Persian manuscripts were studied. The antitussive herbs were listed and their scientific names were identified and authenticated in accordance with botanical reference books. ScienceDirect and PubMed online databases were searched for related mechanisms of action of the reported medicinal plants. Results: The number of 49 herbs containing essential oils were recommended in TPM for the treatment of cough; 21 of them had at least one known mechanism of action for cough suppression in the scientific literature. According to this review, most of the cited medicinal plants were assessed for either nitric oxide inhibitory or antitussive/expectorant activities. Conclusion: In addition to advantageous effects of antitussive herbs noted by TPM, the present review highlighted some recent evidence-based data on these promising candidates that could be used as an outline for future research on their medicinal use.

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The Volatile Phytochemistry of Seven Native American Aromatic Medicinal Plants

Plants ◽

10.3390/plants10061061 ◽

2021 ◽

Vol 10 (6) ◽

pp. 1061

Author(s):

Sims K. Lawson ◽

Prabodh Satyal ◽

William N. Setzer

Keyword(s):

Native American ◽

Medicinal Plants ◽

Essential Oil ◽

Essential Oils ◽

Palmitic Acid ◽

Methyl Salicylate ◽

Chromatographic Techniques ◽

Germacrene D ◽

First Time ◽

Gaultheria Procumbens

As part of our evaluation of essential oils derived from Native American medicinal plants, we have obtained the essential oils of Agastache foeniculum (Pursch) Kuntze (Lamiaceae), Gaultheria procumbens L. (Ericaceae), Heliopsis helianthoides (L.) Sweet (Asteraceae), Liatris spicata (L.) Willd. (Asteraceae), Pycnanthemum incanum (L.) Michx. (Lamiaceae), Smallanthus uvedalia (L.) Mack. ex Mack. (Asteraceae), and Verbena hastata L. (Verbenaceae) by hydrodistillation. The essential oils were analyzed by gas chromatographic techniques. The essential oil of A. foeniculum was dominated by estragole (88–93%), while methyl salicylate (91%) dominated the G. procumbens essential oil. Germacrene D was the major component in H. helianthoides (42%) and L. spicata (24%). 1,8-Cineole (31%) and α-terpineol (17%) were the main compounds in P. incanum essential oil. The essential oil of S. uvedalia showed α-pinene (24%), perillene (15%), and β-caryophyllene (17%) as major components. Verbena hastata essential oil was rich in 1-octen-3-ol (up to 29%) and palmitic acid (up to 22%). Four of these essential oils, H. helianthoides, L. spicata, P. incanum, and V. hastata, are reported for the first time. Additionally, the enantiomeric distributions of several terpenoid components have been determined.

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