scholarly journals Essential Oil Enriched with Oxygenated Constituents from Invasive Plant Argemone ochroleuca Exhibited Potent Phytotoxic Effects

Plants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 998 ◽  
Author(s):  
Ahmed M. Abd-ElGawad ◽  
Abd El-Nasser G. El Gendy ◽  
Abdulaziz M. Assaeed ◽  
Saud L. Al-Rowaily ◽  
Elsayed A. Omer ◽  
...  
Keyword(s):  
Essential Oil ◽  
Invasive Plant ◽  
Acid Methyl Ester ◽  
Test Plant ◽  
Authentic Materials ◽  
Oxygenated Compounds ◽  
Phytotoxic Activity ◽  
Oleic Acid Methyl Ester ◽  
Ic50 Values ◽  
Noxious Weed

Invasive species are considered as one of the major threats to ecosystems worldwide. Although invasive plants are regarded as a foe, they could be considered as natural resources for valuable bioactive compounds. The present study aimed to characterize the chemical composition of the essential oil (EO) from the invasive plant Argemone ochroleuca Sweet, collected from Saudi Arabia, as well as to evaluate its phytotoxic activity. Seventy-four compounds were characterized via GC-MS analysis of EO representing 98.75% of the overall mass. The oxygenated constituents (79.01%) were found as the main constituents, including mono- (43.27%), sesqui- (17.67%), and di-terpenes (0.53%), as well as hydrocarbons (16.81%) and carotenoids (0.73%). Additionally, 19.69% from the overall mass was characterized as non-oxygenated compounds with mono- (1.77%), sesquiterpenes (17.41%), and hydrocarbons (0.56%) as minors. From all identified constituents, trans-chrysanthenyl acetate (25.71%), γ-cadinene (11.70%), oleic acid, methyl ester (7.37%), terpinene-4-ol (4.77%), dihydromyrcenol (2.90%), α-muurolene (1.77%), and γ-himachalene (1.56%) were found as abundant. The EO of A. ochroleuca showed significant phytotoxic activity against the test plant Lactuca sativa and the noxious weed Peganum harmala. The EO attained IC50 values of 92.1, 128.6, and 131.6 µL L−1 for seedling root growth, germination, and shoot growth of L. sativa, respectively, while it had IC50 values of 134.8, 145.7, and 147.9 µL L−1, respectively, for P. harmala. Therefore, this EO could be used as a bioherbicide against weeds, while further study is recommended for the characterization of the authentic materials of the main compounds in the EO as well as for the evaluation of potency of this oil on a field scale and the determination of its biosafety.

scholarly journals Chemical Composition, Allelopathic, Antioxidant, and Anti-Inflammatory Activities of Sesquiterpenes Rich Essential Oil of Cleome amblyocarpa Barratte & Murb.

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1294
Author(s):  
Ahmed M. Abd-ElGawad ◽  
Abdelbaset M. Elgamal ◽  
Yasser A. EI-Amier ◽  
Tarik A. Mohamed ◽  
Abd El-Nasser G. El Gendy ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Climatic Conditions ◽  
Chemometric Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Authentic Materials ◽  
Dactyloctenium Aegyptium ◽  
Hexahydrofarnesyl Acetone ◽  
Ic50 Values ◽  
Anti Inflammatory

The integration of green natural chemical resources in agricultural, industrial, and pharmaceutical applications allures researchers and scientistic worldwide. Cleome amblyocarpa has been reported as an important medicinal plant. However, its essential oil (EO) has not been well studied; therefore, the present study aimed to characterize the chemical composition of the C. amblyocarpa, collected from Egypt, and assess the allelopathic, antioxidant, and anti-inflammatory activities of its EO. The EO of C. amblyocarpa was extracted by hydrodistillation and characterized via gas chromatography–mass spectrometry (GC-MS). The chemometric analysis of the EO composition of the present studied ecospecies and the other reported ecospecies was studied. The allelopathic activity of the EO was evaluated against the weed Dactyloctenium aegyptium. Additionally, antioxidant and anti-inflammatory activities were determined. Forty-eight compounds, with a prespondence of sesquiterpenes, were recorded. The major compounds were caryophyllene oxide (36.01%), hexahydrofarnesyl acetone (7.92%), alloaromadendrene epoxide (6.17%), myrtenyl acetate (5.73%), isoshyobunone (4.52%), shyobunol (4.19%), and trans-caryophyllene (3.45%). The chemometric analysis revealed inconsistency in the EO composition among various studied ecospecies, where it could be ascribed to the environmental and climatic conditions. The EO showed substantial allelopathic inhibitory activity against the germination, seedling root, and shoot growth of D. aegyptium, with IC50 values of 54.78, 57.10, and 74.07 mg L−1. Additionally, the EO showed strong antioxidant potentiality based on the IC50 values of 4.52 mg mL−1 compared to 2.11 mg mL−1 of the ascorbic acid as standard. Moreover, this oil showed significant anti-inflammation via the suppression of lipoxygenase (LOX) and cyclooxygenases (COX1, and COX2), along with membrane stabilization. Further study is recommended for analysis of the activity of pure authentic materials of the major compounds either singularly or in combination, as well as for evaluation of their mechanism(s) and modes of action as antioxidants or allelochemicals.

scholarly journals Allelopathy of Lantana camara as an Invasive Plant

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1028
Author(s):  
Hisashi Kato-Noguchi ◽  
Denny Kurniadie
Keyword(s):  
Essential Oil ◽  
Plant Species ◽  
Invasive Plant ◽  
Rhizosphere Soil ◽  
Lantana Camara ◽  
Regeneration Process ◽  
Living Plant ◽  
Plant Parts ◽  
Indigenous Plant ◽  
Noxious Weed

Lantana camara L. (Verbenaceae) is native to tropical America and has been introduced into many other countries as an ornamental and hedge plant. The species has been spreading quickly and has naturalized in more than 60 countries as an invasive noxious weed. It is considered to be one of the world’s 100 worst alien species. L. camara often forms dense monospecies stands through the interruption of the regeneration process of indigenous plant species. Allelopathy of L. camara has been reported to play a crucial role in its invasiveness. The extracts, essential oil, leachates, residues, and rhizosphere soil of L. camara suppressed the germination and growth of other plant species. Several allelochemicals, such as phenolic compounds, sesquiterpenes, triterpenes, and a flavonoid, were identified in the extracts, essential oil, residues, and rhizosphere soil of L. camara. The evidence also suggests that some of those allelochemicals in L. camara are probably released into the rhizosphere soil under the canopy and neighboring environments during the decomposition process of the residues and as leachates and volatile compounds from living plant parts of L. camara. The released allelochemicals may suppress the regeneration process of indigenous plant species by decreasing their germination and seedling growth and increasing their mortality. Therefore, the allelopathic property of L. camara may support its invasive potential and formation of dense monospecies stands.

scholarly journals Chemical composition and phytotoxicity of essential oil from invasive plant, Ambrosia artemisiifolia L.

2021 ◽  
Vol 211 ◽  
pp. 111879
Author(s):  
Caixia Han ◽  
Hua Shao ◽  
Shixing Zhou ◽  
Yu Mei ◽  
Zhenrui Cheng ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Invasive Plant ◽  
Ambrosia Artemisiifolia

Investigation of the Essential Oil of Ormenis africana from Morocco: Revision of Chemical Composition and Antibacterial Activity

2021 ◽  
Vol 1 (30) ◽  
pp. 34-38
Author(s):  
El Hanbali F Barrero A.F
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Proteus Vulgaris ◽  
Oil Composition ◽  
Gram Negative ◽  
Main Compound ◽  
Oxygenated Compounds ◽  
Aerial Parts

Abstract- The essential oil composition from the aerial parts of Ormenis africana (Asteraceae), an endemic species from Morocco, has been investigated by GC/MS. A total of 31 compounds were identified, representing 77%. After fractionation by column chromatography, the main compound was isolated and its structure elucidated by NMR spectroscopy. The essential oil was dominated by oxygenated compounds with spathulenol (45.8%) followed by camphor (7.1%), -cadinol (5.9%) and -bisabolol (5.9%) as the main compounds. This oil can be classified as spathulenol-type according to its spathulenol content. In vitro the antibacterial activity of the whole essential oil against three Gram positive (Bacillus cereus, Enterococcus faecalis, Streptococcus C) bacteria and three Gram negative (Proteus vulgaris, Escherichia coli, Pseudomonas aeroginosa) bacteria, showed significant results. Keywords: Asteraceae, Ormenis africana, Essential oil, Spathulenol, Antibacterial activity.

Antifungal and allelopathic activities of sesquiterpenes from Solidago canadensis

2021 ◽  
Vol 25 ◽  
Author(s):  
Na Liu ◽  
Meina Song ◽  
Yulin Sun ◽  
Fengying Yang ◽  
Haina Yu ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Seed Germination ◽  
Invasive Plant ◽  
2D Nmr ◽  
Solidago Canadensis ◽  
Significant Activity ◽  
Inhibitory Effects ◽  
Ic50 Values ◽  
Allelopathic Effects

: One new eudesmane sesquiterpene (1) and one new chromolaevane sesquiterpene (2), along with 19 known compounds, have been isolated from the invasive plant Solidago canadensis. Their structures were established by spectroscopic means including 1D/2D-NMR and HR-ESIMS analyses. Compounds 10 and 12, in combination with fluconazole, showed significant activity in an in vitro synergistic antifungal assay against Candida albicans, with FIC values of <0.15625 and <0.28125, respectively. Meanwhile, the allelopathic effects of these sesquiterpenes on Arabidopsis seed germination were also tested. Compounds 5, 7, 17 and 18 retarded the seed germination of Arabidopsis with IC50 values ranging from 9.1 to 41 μg/mL, while other compounds showed no obvious inhibitory effects.

Lipid Deposition on Silicone Hydrogel Lenses, Part I: Quantification of Oleic Acid, Oleic Acid Methyl Ester, and Cholesterol

2006 ◽  
Vol 32 (6) ◽  
pp. 300-307 ◽  
Author(s):  
E Peter Maziarz ◽  
Mark J. Stachowski ◽  
X Michael Liu ◽  
Linda Mosack ◽  
Ann Davis ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Methyl Ester ◽  
Acid Methyl Ester ◽  
Lipid Deposition ◽  
Silicone Hydrogel ◽  
Acid Methyl ◽  
Oleic Acid Methyl Ester

scholarly journals In Vitro Study of Multi-Therapeutic Properties of Thymus bovei Benth. Essential Oil and Its Main Component for Promoting Their Use in Clinical Practice

2018 ◽  
Vol 7 (9) ◽  
pp. 283 ◽  
Author(s):  
Sherif Hassan ◽  
Kateřina Berchová-Bímová ◽  
Miroslava Šudomová ◽  
Milan Malaník ◽  
Karel Šmejkal ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Clinical Practice ◽  
Essential Oil ◽  
Biological Activities ◽  
Structural Parameters ◽  
Antihypertensive Agents ◽  
Gas Chromatography Mass Spectrometry ◽  
Ic50 Values ◽  
Main Component

Thymus bovei Benth. (TB) is an important plant in the traditional medicine of the Mediterranean region. This study investigates the health-promoting properties of TB essential oil (TB-EO) for its possible use in clinical practice with regards to its cytotoxic, anti-herpes simplex virus type 2 (HSV-2), and antihypertensive (through inhibition of human angiotensin-converting enzyme; ACE) properties. The phytochemical profile of EO (99.9%) was analyzed by Gas Chromatography with Flame-Ionization Detection (GC-FID) and Gas Chromatography-Mass Spectrometry (GC-MS). In this study, all biological methods were performed at the level of in vitro studies. The results showed that TB-EO exerted remarked cytotoxic properties against human cervical carcinoma cells, colon cancer cells, and lung adenocarcinoma cells with the half-maximal inhibitory concentration (IC50) values of 7.22, 9.30, and 8.62 µg/mL, respectively, in comparison with that of standard anticancer drug cisplatin with IC50 values of 4.24, 5.21, and 5.43 µg/mL, respectively. Fascinatingly, TB-EO showed very weak cytotoxicity on the healthy human fetal lung fibroblast cells with an IC50 value of 118.34 µg/mL compared with that of cisplatin (IC50 = 10.08 µg/mL). TB-EO, its main component geraniol, TB-EO combined with acyclovir (ACV) along with standard ACV, have displayed pronounced inhibitory properties against the replication of HSV-2 with the half-maximal effective concentration (EC50) values of 2.13, 1.92, 0.81 and 1.94 µg/mL, respectively, with corresponding selectivity indices (SI) 98.59, 109.38, 259.26 and 108.25, respectively. TB-EO and geraniol at a concentration of 15 µg/mL showed prominent inhibitory activities against ACE with % of inhibition 95.4% and 92.2%, respectively, compared with that of standard inhibitor captopril (99.8%; 15 µg/mL). Molecular docking studies were performed to unveil the mechanism of action of geraniol as well as structural parameters necessary for anti-HSV-2 activity (through the inhibition of HSV-2 protease) and ACE inhibition. This is the first report on the chemical composition of Egyptian TB-EO along with the above-mentioned biological activities. Our results may be considered as novel findings in the course of a search for new and active anticancer, anti-HSV-2 and antihypertensive agents, and expand the medicinal value of this plant and its phytochemicals in clinical practice.

scholarly journals In vitro Antidiabetic, anti-obesity and antioxidant proprities of Rosemary extracts

2014 ◽  
Vol 10 (2) ◽  
pp. 2305-2316 ◽  
Author(s):  
Manel Ben Ali ◽  
Kais Mnafgui ◽  
Abdelfattah Feki ◽  
Mohamed Damak ◽  
Noureddine Allouche
Keyword(s):  
Essential Oil ◽  
Ethyl Acetate ◽  
Pancreatic Lipase ◽  
Antioxidant Properties ◽  
Methanolic Extracts ◽  
Ic50 Values ◽  
Inhibitory Potential ◽  
Prevention Of Diabetes ◽  
First Time

Diabetes mellitus is a serious health problem worldwide that has adverse and long-lasting consequences for individuals, families, and communities. Hence, this study sought to investigate the inhibitory potential of rosemary extracts on key-enzymes related to diabetes such as α-amylase and pancreatic lipase activities, as well as to assess their antioxidant properties in vitro. The IC50 values of Rosemary essential oil, ethyl acetate and methanolic extracts against α-amylase were 28.36, 34.11 and 30.39 µg/mL respectively, and those against pancreatic lipase were 32.25, 36.64 and 34.07 µg/mL, suggesting strong anti-diabetic and anti-obesity effects of Rosemary. The methanolic extract was found to be the highest in levels of phenolic (282.98 µgGAE/mg extract) and flavonoids (161.05 µg QE /mg extract) contents as well as in the antioxidant activity (IC50 = 15.82 µg/mL) as compared to other extracts ethyl acetate (IC50 = 32.23 µg/mL) and essential oil  (IC50 = 96.12 µg/mL).Antioxidant efficacy of Rosemary extracts has been estimated in the stabilization of sunflower oil (SFO) at three different concentrations, i.e. 200 (SFO-200), 500 (SFO-500) and 1000 ppm (SFO-1000). Results showed the highest efficiency of SFO-1000.The results obtained in this study demonstrated for the first time that Rosemary is a potent source of natural inhibitors of α-amylase and pancreatic lipase with powerful antioxidants proprieties that might be used in the food stabilization and the prevention of diabetes and obesity complications as a complementary pharmacological drug.

scholarly journals PERBANDINGAN METODE MICROWAVE HYDRODISTILLATION (MH) DAN MICROWAVE HYDRODIFFUSION AND GRAVITY (MHG) UNTUK MENGEKSTRAK MINYAK ATSIRI DARI KULIT JERUK

2017 ◽  
Vol 2 (1) ◽  
pp. 82
Author(s):  
Ayu Chandra Kartika Fitri ◽  
Fikka Kartika Widyastuti
Keyword(s):  
Essential Oil ◽  
Microwave Power ◽  
Citrus Fruit ◽  
Orange Peel ◽  
Quality Standard ◽  
Extraction Methods ◽  
Oil Composition ◽  
Citrus Peel ◽  
Oxygenated Compounds ◽  
Earth Gravity

One source of essential oil that has long been popular is a citrus fruit (Citrus aurantium). Results waste citrus peel around 500,000 tonnes per year. So the prospects for the utilization of waste orange peel are big enough to extract the essential oil. However, conventional extraction methods have drawbacks in terms of product quality, so to find solutions to these shortcomings, it is necessary to use the extraction method by Microwave Hydrodiffusion and Gravity (MHG). This method combines the use of microwave heating and physical phenomena (hydrodiffusi and earth gravity) at atmospheric pressure, without addition of organic solvents or water. In this study used fresh orange peel material 400 and 500 grams, two variable microwave power of 100 and 300 Watt and the extraction time for 15, 30, 45 and 60 minutes. To know the processing time and the microwave power effective method of MHG, oil composition was analyzed by GCMS to determine the amount of the fraction of oxygenated compounds. The larger of installed microwave power, the higher of operating temperature, so the %yield increases in a shorter time. From the comparison of energy consumed, the MHG method is give 30% more energy efficient than the Microwave Hydrodistillation (MHD) method. The use of microwaves does not change the physical properties of oil. The oil produced from the MHG method has a good quality because it has specific gravity and refractive index values that meet the EOA quality standard and has a greater oxygenated compounds content than the MHD method

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