Amoebicidal activity of α-bisabolol, the main sesquiterpene in chamomile (Matricaria recutita L.) essential oil against the trophozoite stage of Acanthamoeba castellani Neff

Abstractgenus includes opportunistic pathogens which are distributed worldwide and are causative agents of a fatal encephalitis and severe keratitis in humans and other animals. Until present there are not fully effective therapeutic agents against this pathogen and thus the need to search for novel anti-amoebic compounds is urgent. Recently, essential oils of aromatic and medicinal plants have shown activity against

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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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Chemical composition, antimicrobial activity and biological properties of essential oils

International Journal of Life Sciences ◽

10.3126/ijls.v9i2.12043 ◽

2015 ◽

Vol 9 (2) ◽

pp. 9-13 ◽

Cited By ~ 2

Author(s):

Amir Hossein Saeidnejad ◽

Peyman Rajaei

Keyword(s):

Chemical Composition ◽

Medicinal Plants ◽

Essential Oil ◽

Essential Oils ◽

Antimicrobial Properties ◽

Biological Properties ◽

Antioxidant Agents ◽

Ancient Times ◽

High Concentrations ◽

Oil Repellent

Essential oils constitute a heterogeneous collection of chemical compounds. Their main characteristics are that they all synthesized by plants and are volatile and mostly soluble in ethanol. They have traditionally been obtained from plants and they have been widely used for insecticidal, medicinal and cosmetic purposes. Essential oils contains about 20–60 components at quite different concentrations and they are characterized by two or three major components at fairly high concentrations. Lately, the essential oils and various extracts of plants have gained special interest as sources of natural antimicrobial and antioxidant agents because of the resistance to antibiotics that some microorganisms have acquired and the possible toxicities of the synthetic antioxidants. Spices consumed daily in different types of food to improve flavors, since ancient times, are well known for their antioxidant and antimicrobial properties. During recent decades, numerous numbers of plants have been monitored for their possible role as repellents and insecticides. In this review, the chemical composition profile of some important medicinal plants was evaluated, then antimicrobial properties of a number of essential oils was compared. Antioxidant activity of some essential oils was also considered. Finally, essential oil repellent properties an an important characteristics was evaluated. Further investigation for available data related to the other biological properties of medicinal plants essential oil is recommended.DOI: http://dx.doi.org/10.3126/ijls.v9i2.12043 International Journal of Life Sciences 9 (2) : 2015; 9-13

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Pharmacology and Phytochemistry of Ecuadorian Medicinal Plants: An Update and Perspectives

Pharmaceuticals ◽

10.3390/ph14111145 ◽

2021 ◽

Vol 14 (11) ◽

pp. 1145

Author(s):

Chabaco Armijos ◽

Jorge Ramírez ◽

Melissa Salinas ◽

Giovanni Vidari ◽

Alírica I. Suárez

Keyword(s):

Chemical Composition ◽

Medicinal Plants ◽

Secondary Metabolites ◽

Essential Oils ◽

Volatile Compounds ◽

Biological Activities ◽

Indigenous Communities ◽

Therapeutic Agents ◽

Practical Applications ◽

Pharmacological Studies

The use of plants as therapeutic agents is part of the traditional medicine that is practiced by many indigenous communities in Ecuador. The aim of this study was to update a review published in 2016 by including the studies that were carried out in the period 2016–July 2021 on about 120 Ecuadorian medicinal plants. Relevant data on raw extracts and isolated secondary metabolites were retrieved from different databases, resulting in 104 references. They included phytochemical and pharmacological studies on several non-volatile compounds, as well as the chemical composition of essential oils (EOs). The tested biological activities are also reported. The potential of Ecuadorian plants as sources of products for practical applications in different fields, as well the perspectives of future investigations, are discussed in the last part of the review.

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Development of bioactive/active additives based on essential oils: A review

Medicinal Plant Communications ◽

10.37360/mpc.20.3.4.12 ◽

2020 ◽

Vol 3 (4) ◽

pp. 60-67

Author(s):

Jessica Alarcón-Moyano ◽

◽

Silvia Matiacevich ◽

Keyword(s):

Medicinal Plants ◽

Essential Oil ◽

Essential Oils ◽

Freeze Drying ◽

The Other ◽

Wall Material ◽

Oil Oxidation ◽

Active Additive ◽

Wall Materials ◽

Selection For

The use of bioactive/active additives has been increasing in recent years, especially those derived from medicinal plants such as essential oils. However, due to essential oil oxidation it is necessary to protect it by encapsulation techniques such as: emulsion, spray- and/or freeze-drying as the most economical techniques. On the other hand, an important factor is to determine the appropriate wall material to obtain a prolonged or controlled release in the food or in the organism. Therefore, several factors affect the release of the compounds such as the type, amount of wall material and/or combination of wall materials. Therefore, the knowledge of all the aforementioned factors is important in order to make an adequate selection for the development of a bioactive/active additive based on essential oils.

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In vitro effect of essential oils from aromatic and medicinal plants on mushroom pathogens: Verticillium fungicola var. fungicola, Mycogone perniciosa, and Cladobotryum sp.

Archives of Biological Sciences ◽

10.2298/abs0902231t ◽

2009 ◽

Vol 61 (2) ◽

pp. 231-237 ◽

Cited By ~ 13

Author(s):

Brankica Tanovic ◽

Ivana Potocnik ◽

G. Delibasic ◽

M. Ristic ◽

M. Kostic ◽

...

Keyword(s):

Medicinal Plants ◽

Essential Oils ◽

Fungicidal Effect ◽

Verticillium Fungicola ◽

Aromatic And Medicinal Plants ◽

Volatile Phase ◽

Main Components ◽

Oregano Oil ◽

Vitro Effect

Lavender, anise, chamomile, fennel, geranium, oregano, parsley, and sage essential oils were tested for their effectiveness against mushroom pathogens: Verticillium fungicola var. fungicola, Mycogone perniciosa, and Cladobotryum sp. Isolates were exposed to the volatile phase of the oils and then ventilated in order to determine if the effect of the oil was lethal to the pathogen. Oregano and geranium oils were the most toxic, having a fungicidal effect at 0.02-0.08 ?l/ml of air, depending on the pathogen. Oregano oil was characterized by high content of carvacrol and thymol, while citranelol and geraniol were the main components of geranium oil.

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Socioeconomic valorization and development of a bio-fungicide from essential oils of four Algerian aromatic and medicinal plants: Artemisia herba alba Asso, Mentha pulegium L, Rosmarinus officinalis L and Ocimum basilicum L.

Asian Journal of Research in Chemistry ◽

10.5958/0974-4150.2020.00084.x ◽

2020 ◽

Vol 13 (6) ◽

pp. 473-484

Author(s):

Zineb Mahcene ◽

Zoubida Mahcene ◽

Kamilia Bireche ◽

Fateh Serdouk

Keyword(s):

Medicinal Plants ◽

Essential Oils ◽

Ocimum Basilicum ◽

Rosmarinus Officinalis ◽

Mentha Pulegium ◽

Aromatic And Medicinal Plants ◽

Rosmarinus Officinalis L

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Researches on the capitalization of some medicinal plants to obtain essential oils by using the performant innovative installation EUV 2x1000 type

E3S Web of Conferences ◽

10.1051/e3sconf/201911203012 ◽

2019 ◽

Vol 112 ◽

pp. 03012

Author(s):

Ion Grigore ◽

Andreea Iulia Grigore ◽

Laurentiu-Constantin Vlăduţoiu ◽

Mario Cristea ◽

Elena Sorica ◽

...

Keyword(s):

Medicinal Plants ◽

Essential Oil ◽

Essential Oils ◽

Water Vapour ◽

Experimental Research ◽

Volatile Components ◽

Research Results ◽

Family Associations

The article includes research on the production of essential oils from medicinal plants by applying water vapour distillation, the method most commonly used for the extraction of essential oils from plants. The results consist of extracting the essential oil from 2 types of medicinal plants: lavender and mint with the help of the EUV installation. The paper highlights the important aspects of obtaining quality products, on economically advantageous terms, addressing both specialists, farmers in larger farms and family associations. The article presents the experimental research results on obtaining essential oils from medicinal plants. Oils obtained by this method contain only volatile components, while wax and volatile resins are not found in the finished product.

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Volatile Oil Composition of Some Commercial Medicinal Plants Sold in Konya, Turkey

Asian Plant Research Journal ◽

10.9734/aprj/2019/v2i126588 ◽

2019 ◽

pp. 1-5

Author(s):

Eray Tulukcu

Keyword(s):

Medicinal Plants ◽

Essential Oil ◽

Essential Oils ◽

Oil Content ◽

Local Community ◽

Volatile Oil ◽

Essential Oil Composition ◽

Oil Composition ◽

Thyme Essential Oil ◽

The Difference

This study was conducted to determine the essential oil composition of some medicinal plants from herbalists that local community have interest in; The research was carried out in the Medicinal Plants Laboratory of Konya, in 2014 – 2015. The medicinal plants used in the research were supplied by herbalists and wholesalers who supply medicinal plants in Konya. At the end of this study, essential oil composition of medicinal plants ranged from 0.71 % (Daphne) to 5% (Thyme). The lavender essential oil composition ranged between 2% and 5%, while the composition of thyme essential oil ranged between 1% and 5%. There are several reasons for the change observed in the essential oil content of medicinal plants. In general, the effect of difference in the proportion of essential oils of the medicinal plants used in the study was as a result of the difference in regions, domestically and abroad where these plants were collected.

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Oxygen introduction during extraction and the improvement of antioxidant activity of essential oils of basil, lemon and lemongrass

Ciência Rural ◽

10.1590/0103-8478cr20170045 ◽

2017 ◽

Vol 47 (8) ◽

Cited By ~ 2

Author(s):

Daniele de Freitas Ferreira ◽

Flávia Michelon Dalla Nora ◽

Bruna Nichelle Lucas ◽

Cristiano Ragagnin de Menezes ◽

Alexandre José Cichoski ◽

...

Keyword(s):

Antioxidant Activity ◽

Quality Control ◽

Medicinal Plants ◽

Essential Oil ◽

Essential Oils ◽

Oil Extraction ◽

Suitable Alternative ◽

Simple Modification ◽

Oxygenated Compounds ◽

Food Quality Control

ABSTRACT: Essential oil extraction is commonly carried out by using the hydrodistillation method, which is described in official compendia of food quality control and medicinal plants. Despite the widespread use of this method, few studies have evaluated the effect of the atmosphere change during extraction on the composition and antioxidant activity of essentials oils. Therefore, a study of oxygen introduction influence during the extraction of essential oils from basil, lemongrass and lemon by hydrodistillation was performed. Total amount of oxygenated compounds (e.g., linalool, camphor, α-terpineol, neral, geranial, eugenol and α-muurolol) increased for all essential oils extracted under oxygen flow. Antioxidant activity evaluated by using the ORAC method significantly increased (P<0.0001) with oxygen from 618 to 906, 355 to 613 and 72 to 262µmol Trolox g-1 oil for basil, lemongrass and lemon, respectively. Therefore, the simple modification proposed could be considered a suitable alternative to obtain essential oils with higher antioxidant activity.

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