scholarly journals Chemical Composition,Cytotoxic and Anti-arthritic Activities of Hexane Extracts of Certain Schinus Species

2021 ◽  
Vol 9 (11) ◽  
Author(s):  
Heba A. S. El-Nashar ◽  
Nada M. Mostafa ◽  
Omayma A. Eldahshan ◽  
Abdel Nasser B. Singab
Keyword(s):  
Chemical Composition ◽  
Hexane Extracts

Anti-staphylococcal activity, cytotoxicity, and chemical composition of hexane extracts from arils and seeds of two Samoan Myristica spp

2021 ◽  
Vol 139 ◽  
pp. 1-5
Author(s):  
Marketa Houdkova ◽  
Klara Urbanova ◽  
Ivo Doskocil ◽  
Julian Wong Soon ◽  
Talie Foliga ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Hexane Extracts

scholarly journals Cuticular and Internal Chemical Composition of Biting Midges Culicoides spp. (Diptera: Ceratopogonidae), Potential Vectors of Viral Diseases

2014 ◽  
Vol 9 (8) ◽  
pp. 1934578X1400900
Author(s):  
Mikel González ◽  
Sergio López ◽  
Gloria Rosell ◽  
Arturo Goldarazena ◽  
Angel Guerrero
Keyword(s):  
Chemical Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Viral Diseases ◽  
Chemical Profile ◽  
Biting Midges ◽  
Biting Midge ◽  
Branched Hydrocarbons ◽  
Hexane Extracts ◽  
Major Chemical ◽  
First Time

The chemical profile of the cuticle and internal tissues of four species of Culicoides have been studied for the first time by gas chromatography-mass spectrometry. The chemical composition of females of C. obsoletus s.l. and C. lupicaris, vectors of diverse viral diseases, have been compared with that of other biting midges, such as C. kibunensis and C. fascipennis, and the non-biting midge Forcipomyia bipunctata. A total of 61 compounds belonging to 8 major chemical classes were identified in cuticular and internal tissues in n-hexane extracts. The compounds include carboxylic acids (CAs) (C6-C20), with C16:0, C16:1 and C18:1 being dominant, branched hydrocarbons (C29 to C38 mono/di/trimethylalkanes), linear hydrocarbons (C15 to C33, mainly odd chain carbons), terpenes (geranylacetone, geranylgeraniol acetate, squalene, terpenic alcohol), steroids (cholesterol), aldehydes (C9-C10 and even chain C20 to C30), and esters. The chemical profile depends on the species and whether the extracts are external (cuticle) or internal. The contents of linear and branched hydrocarbons and aldehydes was high in cuticular extracts but practically absent in internal tissues, which were, in contrast, rich in CAs, terpenes and steroids. The results are discussed and compared with other Culicoides midges and mosquito-related species.

scholarly journals Chemical composition of ultrasonic-assisted n-hexane extracts of Sideritis scardica Grieseb. and Sideritis raeseri Boiss. & Heldr. (Lamiaceae) from Macedonia and Albania

2011 ◽  
Vol 56 ◽  
pp. 45-56 ◽  
Author(s):  
Bujar Qazimi ◽  
Marija Karapandzova ◽  
Gjose Stefkov ◽  
Svetlana Kulevanova
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Plant Material ◽  
Extraction Process ◽  
Triterpene Alcohols ◽  
Assisted Extraction ◽  
Aromatic Alcohols ◽  
Ultrasonic Assisted ◽  
Hexane Extracts ◽  
Ultrasonic Assisted Extraction

Chemical composition of n-hexane extracts obtained from dried over-ground parts of two species of Sideritis, S. scardica Grieseb. and S. raeseri Boiss. & Heldr. (Lamiaceae) was analyzed using GC/FID/MS. The collection of plants was made on different locations in the western part of Macedonia and the southern part of Albania, comprising twelve different samples of plant material. The ultrasonic-assisted extraction process was used for preparation of the n-hexane extracts yielded 0.73-3.33 % and 9.11-10.44 % of extracts for S. scardica and S. raeseri, respectively. Over one hundred constituents of the extracts were identified, belonging to several classes of components: diterpenes, hydrocarbons, dominantly present in each of the extracts, followed by fatty acids, aliphatic and aromatic alcohols, sterols, triterpene alcohols, and monoterpenes and sesquiterpenes, which were found in much smaller amounts or only in traces. The most abundant constituents of the extracts of both species of Sideritis were two diterpene components, both with M=286, which were not fully identified. Large percentages of nonacosane (1.71-12.22% and 7.46-19.68% for S. scardica and S. raeseri, respectively) and hentriacontane (4.48-20.79% and 8.09-30.31 % for S. scardica and S. raeseri, respectively) were also found in the extracts of both species.

ANTIMICROBIAL, ANTIOXIDANT ACTIVITY, AND CHEMICAL COMPOSITION OF ORIGANUM COMPACTUM BENTH FROM TAOUNATE PROVINCE, NORTH MOROCCO

2020 ◽  
pp. 126-131
Author(s):  
AHMED ZEROUAL ◽  
NOUREDDINE ELOUTASSI ◽  
MAHDI CHAOUCH ◽  
ABDELLAH CHAQROUNE
Keyword(s):  
Chemical Composition ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Chemical Compounds ◽  
Antimicrobial Activities ◽  
Local Conditions ◽  
Hexane Extracts ◽  
Origanum Compactum ◽  
Promising Source ◽  
Important Activity

Objective: Origanum compactum is one of the most important medicinal species in terms of ethnobotany in Morocco. It attracts the attention of several research works; however, its chemical composition under local conditions is not well documented. Here, we aimed at determining essential oil chemical composition, antibacterial, and antioxidant activities of organic extracts of O. compactum. Methods: Antimicrobial activities were assessed against four strains (Escherichia coli, Staphylococcus aureus, Bacillus subtilis, and Candida albicans). Antioxidant activities were estimated by radical 2,2-diphenyl-1-picrylhydrazyl scavenging activity. Polyphenols and flavonoids were determined. Chemical composition was screened using gas chromatography. Results: Our results showed that yield extracts varied significantly among solvents and ranged from 10.30% (n-hexane) to 31.70% (methanolic). Methanolic extracts had the highest values of yield, polyphenols, and flavonoids, while n-hexane extracts showed the lowest values of yield and polyphenols. Regarding antimicrobial activities, E. coli showed the most important activity. Concerning antioxidant activities, n-hexane extracts had the most important activity. The phytochemical screening revealed 12 compounds. Among them, γ-Terpinene, o-Cymene, and carvacrol were the major compounds (around 73% of total chemical compounds). Conclusion: It could be concluded that the studied plant might be a promising source of chemical compounds responsible for important biological activities.

scholarly journals Gundelia tournefortiiAntidiabetic Efficacy: Chemical Composition and GLUT4 Translocation

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Sleman Kadan ◽  
Yoel Sasson ◽  
Bashar Saad ◽  
Hilal Zaid
Keyword(s):  
Chemical Composition ◽  
Glucose Transporter ◽  
Elisa Test ◽  
Antidiabetic Activity ◽  
Phytochemical Analysis ◽  
Glut4 Translocation ◽  
Hexane Extracts ◽  
L6 Muscle Cells ◽  
First Time

In the presentin vitrostudy, we tested the chemical composition, cytotoxicity and antidiabetic activity of two distinct extracts of wild Artichoke-like vegetable,Gundelia tournefortii: methanol and hexane. GC/MS phytochemical analysis ofG. tournefortiimethanol and hexane extracts revealed 39 compounds reported here for the first time inG. tournefortiiout of the 45 detected compounds. Only Stigmasterol was present in both extracts. The efficacy ofG. tournefortiiextracts in enhancing glucose transporter 4 (GLUT4) translocation to the plasma membrane (PM) was tested in L6 muscle cells stably expressing myc-tagged GLUT4 (L6-GLUT4myc) using cell-ELISA test. Results obtained here indicate that methanol and hexane extracts were safe up to 250 μg/ml as measured with MTT and the LDH leakage assays. The methanol extract was the most efficient in GLUT4 translocation enhancement. It increased GLUT4 translocation at 63 μg/ml 1.5- and 2-fold relative to the control in the absence and presence of insulin, respectively. These findings indicate thatG. tournefortiipossesses antidiabetic activity in part by enhancing GLUT4 translocation to the PM in skeletal muscle.

The Origin of the Moon

1962 ◽  
Vol 14 ◽  
pp. 149-155 ◽  
Author(s):  
E. L. Ruskol
Keyword(s):  
Chemical Composition ◽  
Solar System ◽  
The Moon ◽  
The Earth ◽  
The Difference ◽  
Origin Of The Moon

The difference between average densities of the Moon and Earth was interpreted in the preceding report by Professor H. Urey as indicating a difference in their chemical composition. Therefore, Urey assumes the Moon's formation to have taken place far away from the Earth, under conditions differing substantially from the conditions of Earth's formation. In such a case, the Earth should have captured the Moon. As is admitted by Professor Urey himself, such a capture is a very improbable event. In addition, an assumption that the “lunar” dimensions were representative of protoplanetary bodies in the entire solar system encounters great difficulties.

On the Inhomogeneity of Chemical Composition over the Surface of 21 Per

1976 ◽  
Vol 32 ◽  
pp. 343-349
Author(s):  
Yu.V. Glagolevsky ◽  
K.I. Kozlova ◽  
V.S. Lebedev ◽  
N.S. Polosukhina
Keyword(s):  
Chemical Composition ◽  
Spectral Line ◽  
Variable Star ◽  
Radial Velocities ◽  
Crimean Astrophysical Observatory ◽  
Line Intensities ◽  
Magnetic Variable

SummaryThe magnetic variable star 21 Per has been studied from 4 and 8 Å/mm spectra obtained with the 2.6 - meter reflector of the Crimean Astrophysical Observatory. Spectral line intensities (Wλ) and radial velocities (Vr) have been measured.

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