scholarly journals GC-MS ANALYSIS AND EXTRACTION OPTIMIZATION OF BIOACTIVE COMPOUNDS FROM PELARGONIUM GRAVEOLENS LHER METHANOLIC EXTRACT AND THEIR ACTIVITIES AS PHARMACOLOGICAL AGENTS

2019 ◽  
Vol 10 (9) ◽  
pp. 59-72
Author(s):  
Daniel M Makanyane ◽  
Ikechukwu P Ejidike ◽  
Cornelius C Ssemakalu ◽  
Fanyana M Mtunzi ◽  
Vusumzi E Pakade ◽  
...  
2020 ◽  
Vol 8 ◽  
Author(s):  
Abdul Sadiq ◽  
Umer Rashid ◽  
Sadiq Ahmad ◽  
Mohammad Zahoor ◽  
Mohamed F. AlAjmi ◽  
...  

Natural-based drugs are believed to be safe, effective and economical. Based on the medicinal importance of the genus Eryngium and unexplored nature of Eryngium caeruleum, we have evaluated its antidiabetic and antioxidant potentials. Both in-vitro and in-vivo assays have been carried out for antidiabetic assays. The antioxidant activity was determined by using different free radicals [i.e., 1,1-diphenyl,2-picrylhydrazyl (DPPH), 2,2-azinobis[3-ethylbenzthiazoline]-6-sulfonic acid (ABTS), and hydrogen peroxide (H2O2)]. Moreover, different phytoconstituents were identified in the most active solvent fraction by GC-MS analysis. Furthermore, comparative fingerprints of methanolic extract and chloroform fraction were also analyzed via High Performance Liquid Chromatography coupled with Diode Array Detector (HPLC-DAD). The crude methanolic extract of E. caeruleum (Ec.Cr) and its sub-fractions [i.e., n-hexane (Ec.Hex), chloroform (Ec.Chf), ethyl acetate (Ec.EtAc), and aqueous (Ec.Aq) were employed in this study]. In the α-glucosidase inhibition assay, a concentration-dependent inhibitory response was observed against the enzyme. The most active sample was Ec.Chf which revealed an IC50 of 437 μg/ml in comparison to the standard acarbose (IC50 25 μg/ml). The rest of the samples showed moderate inhibition of α-glucosidase. In antioxidant assays, Ec.Chf and Ec.Cr exhibited a considerable scavenging effect against all the free radicals. The IC50 values recorded for Ec.Chf were 112, 109, and 150 μg/ml against DPPH, ABTS, and H2O2 respectively. Based on the in-vitro potential of Ec.Chf, this was subjected to the in-vivo model experiment. The Ec.Chf lowered the blood glucose level up to 10.3 mmol/L at 500 μg/Kg. The Ec.Chf was also subjected to GC-MS analysis. The GC-MS analysis confirmed the presence of 60 compounds. The identified phytoconstituents consist of some essential compounds previously reported with antidiabetic and antioxidant studies, which include thymol, tocopherol, phytol, nerolidol, (I)-neophytadiene, linolenic acid, and falcarinol. Similarly, the HPLC-DAD chromatograms of Ec.Cr and Ec.Chf exhibited a variety of peaks, which further demonstrates the possibility of important phytochemicals. In a nutshell, we can conclude that Eryngium caeruleum is a potential source of bioactive compounds which may be beneficial for the management of ailments like diabetes and free radicals mediated disorders. Molecular docking was performed to explore the possible role of all the identified bioactive compounds in the chloroform fraction of Eryngium caeruleum into active sites of the homology model of α-glucosidase.


Author(s):  
Vinod Deora ◽  
G. S. Deora

Aims: Present study aims to evaluate the presence of bioactive compounds of Semibarbula orientalis (Pottiales: Pottiaceae), a bryophyte whole plant methanolic extract by Gas Chromatography-Mass Spectrometry (GC-MS) which are important medicinally as well flavouring and colouring agents. Study design: Qualitative preliminary phytochemical and GC-MS analysis. Place and duration of study: The study was carried out at Department of Botany, Center of Advanced Study, Jai Narain Vyas University, Jodhpur-Rajasthan (India) from January 2017 to December 2020. Methodology: The Preliminary phytochemical screening of S.orientalis was carried out qualitatively following the standard methods of Harbourne, Trease and Evans. GC-MS analysis was performed by GC-MS-QP 2010 Shimadzu, Japan equipped with thermal desorption system TD 20. Results: Preliminary phytochemical analysis revealed the presence of carbohydrates, proteins, phenols, sterols, flavonoids and terpenoids. GC-MS analysis of methanolic extract of whole plant revealed the presence of 49 bioactive phytoconstituents which include mainly n-Hexadecanoic acid, Cis-vaccenic acid, Azulene, Hexadecanoic acid metyl ester, 1,3-Propanediol, 2-(hydroxyl methyl)-2-nitro, 9-12 Octadecadienol chloride (z,z), Octadecanoic acid etc. Conclusion: Preliminary phytochemical and GC-MS profiling of methanolic extract Semibarbula orientalis whole plant showed the presence of high value bioactive compounds with important medicinal properties and other uses in food industries as flavouring and colouring agents.


2016 ◽  
Vol 4 (7) ◽  
pp. 1417-1422 ◽  
Author(s):  
P.T. Srinivasan ◽  
◽  
D. Anandhi ◽  
S. Kanimozhi ◽  
M. Anbarasan. ◽  
...  

Author(s):  
Shubhaisi Das ◽  
Sunanda Burman ◽  
Goutam Chandra

Background: The only remedy for up surging problem of antibiotic resistance is the discovery of antibacterial agents of natural origin. Objective: The present study was aimed at finding antibacterial potential of crude and solvent extracts of mature leaves of Plumeria pudica. Methods: Antibacterial activity of three different solvent extracts were evaluated in four human and four fish pathogenic bacteria by measuring the zone of inhibition and determining Minimum Inhibitory Concentration and Minimum Bactericidal Concentration values. Standard antibiotics were used as positive control. Preliminary phytochemical screening of most effective extract i.e., ethyl acetate extract, Fourier Transform Infra Red analysis and GC-MS analysis of the Thin Layer Chromatographic (TLC) fraction of ethyl acetate extract were done meticulously. All experiments were done thrice and analyzed statistically. Results: Crude leaf extracts and solvent extracts caused good inhibition of bacterial growth in all selected bacteria. Ethyl acetate extract showed highest inhibition zones in all tested strains with maximum inhibition (19.50±0.29 mm) in Escherichia coli (MTCC 739). MBC/MIC of the extracts indicated that all three solvent extracts were bactericidal. Preliminary phytochemical tests revealed the presence of tannins, steroids and alkaloids and FT-IR analysis revealed presence of many functional groups namely alcoholic, amide, amine salt and aldehyde groups. From the GC-MS analysis of TLC fraction of ethyl acetate extract five different bioactive compounds e.g., 2,4-ditert –butylphenyl 5-hydroxypentanoate, Oxalic acid; allyl nonyl ester, 7,9-Ditert-butyl-1-oxaspiro(4,5)deca-6,9-diene-2,8-dione, Dibutyl phthalate and 2,3,5,8-tetramethyl-decane were identified. Conclusion: Leaf extracts of P. pudica contain bioactive compounds that can be used as broad spectrum bactericidal agent.


Author(s):  
Yogeshwari C ◽  
Kumudha P

 Objective:The objective of this study is to characterize the phytoconstituents of Tiliacora racemosa Colebr. using gas chromatography mass spectrometry (GC-MS).Methods: Preliminary phytochemical and physicochemical analysis was carried out using standard procedures. GC-MS analysis of methanolic extract was carried out using Thermo GC-Trace Ultra version: 5.0, Thermo MS DSQ with a DB 35MS capillary standard non-polar column and gas chromatograph interfaced to a mass selective detector (MS DSQ II) with Xcalibur software.Results: Preliminary phytochemical screening revealed the presence of alkaloids, flavonoids, phenols, tannins, triterpenoids, steroids, proteins and amino acids, carbohydrates, saponins and coumarin. Quinones, anthraquinones, glycosides and fixed oil were absent. GC-MS analysis revealed the presence of 28 compounds of which quinic acid (retention times [RT]: 15.65) and inositol, 1-deoxy-(CAS) (RT: 19.24) was observed as abundant compounds.Conclusion: The presence of various bioactive compounds confirms the medicinal importance and it’s application for curing various diseases by traditional practitioners. However, isolation and characterization of potential bioactive compounds would lead to drug formulation.


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