scholarly journals Characterization of Bioactive Sesquiterpenes, Organic Acids and Their Derivatives from the Leaves of Psidium guajava Linn

2014 ◽  
pp. 456-467
Author(s):  
Okenwa U. Igwe ◽  
T. Abii
Keyword(s):  
Mass Spectrometry ◽  
Methyl Ester ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Psidium Guajava ◽  
Gas Chromatography Mass Spectrometry ◽  
Hexadecanoic Acid ◽  
Acid Methyl ◽  
Phytochemical Compounds

The isopropanolic extract of the leaves of Psidium guajava Linn was analyzed by Gas chromatography-mass spectrometry (GC-MS). Fourteen different phytochemical compounds have been characterized, including 1, 3, 3-trimethyl-2-oxabicyclo [2.2.2] octane, (2.06%), 4, 11, 11-trimethyl-bicyclo [7.2.0] undec-4-ene (6.26%), (E,E,E)-2, 6, 6, 9-tetramethyl-1, 4, 8-cycloundecatriene (1.05%), eudesma-4(14),11-diene (5.07%), guaia-1(10), 11-diene (4.63%), 3, 7, 11-trimethyl-1,6,10-dodecatriene-3-ol(4.01%), 1,3-dimethyl-8-(1-methylethyl)-tricyclo [4.4.0.0(2,7)] dec-3-ene (1.66%), 1, 1, 4, 7-tetramethyl-decahydro-1H-cycloprop[e] azulen-4-ol (11.00%), hexadecanoic acid methyl ester (1.53%), 4, 4, 8-trimethyltricyclo [6.3.1.0(1,5)] dodecane-2, 9-diol (2.78%), L-(+)-ascorbic acid 2,6-dihexadecanoate (20.43%), 7-octadecenoic acid methyl ester (3.81%), 3, 7, 11, 15-tetramethyl-2-hexadecen-1-ol (2.24%) and 9-octadecenoic acid (33.47%). The presence of these bioactive compounds in the leaves of Psidium guajava Linn could be the reason behind its use for the treatment of diseases and infections in herbal medicine in Nigeria.  

scholarly journals Sandalwood, an Indian medicinal plant attenuates the microbial growth and influence up/down regulation of the metabolites

2021 ◽  
Author(s):  
Romana Parveen ◽  
Tooba Naz Shamsi ◽  
Sadaf Fatima
Keyword(s):  
Methyl Ester ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Gas Chromatography Mass Spectrometry ◽  
Hexadecanoic Acid ◽  
Trimethylsilyl Ester ◽  
E Coli ◽  
Acid Methyl ◽  
Soxhlet Apparatus ◽  
Antibacterial Assay

AbstractThe methanolic extract of sandalwood (SwME) was prepared by soxhlet apparatus and the antibacterial assay was performed. Further, the metabolite profiling of SwME and lysates of E. coli and E. coli grown in the presence of SwME was generated. SwME showed maximum inhibition against E. coli (MTCC 443) i.e. 82.71%, and minimal against B. subtilis (MTCC 736) i.e. 26.82%. The metabolome profiles of E. coli and SwME were generated using gas chromatography-mass spectrometry (GC-MS) technique. Comparative studies were done to understand to what extent metabolite modifications differ between SwME, E. coli lysate and the E. coli strain grown in presence of extract. Result revealed 23 peaks with major compounds present in E. coli were 9-Octadecenoic Acid (Z)-, Methyl Ester (26.85%), Hexadecanoic Acid, methyl ester (20.5%) and Hexadecanoic acid, trimethylsilyl ester (15.79%). When E. coli was grown in the presence of SwME, GC-MS analysis showed 25 peaks with major compounds such as 9-Octadecenoic Acid, Methyl Ester (21.97%), Hexadecanoic Acid, Methyl Ester (17.03%), and Hexadecanoic Acid, Trimethylsilyl Ester (14.96%). Correlating the metabolic profiles with the changes occurring is essential to progression their comprehension and in the development of new approaches to identify the metabolomics regulation in E. coli in response to SwME.

scholarly journals Gas Chromatography-Mass Spectrometry (GC-MS) Analysis of Ajwain (Trachyspermum ammi) Seed Extract

2020 ◽  
Vol 11 (02) ◽  
pp. 228-231
Author(s):  
Basheer Mohammed Abdullah ◽  
Mansour Abdulnabi Hadi Mehdi ◽  
Abdul Raoof Khan ◽  
Jiyaullakhan Maulakhan Pathan
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Methyl Ester ◽  
Volatile Compounds ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Seed Extract ◽  
Gas Chromatography Mass Spectrometry ◽  
Acid Methyl ◽  
Trachyspermum Ammi

The objectives of this research were to determine the chemical composition of the extract of Trachyspermum ammi L. seeds by using gas chromatography-mass spectrometry analysis (GC-MS). The GC-MS is a matchless method for the study and measuring quantity of organic volatile and semi-volatile compounds. Gas chromatography is employed to separates mixtures into individual components employing a temperature-controlled capillary column. Mass spectrometry is utilized to recognize a variety of components from their mass spectra. In the present study, volatile/ semi-volatile compounds present in Ajwain seed extract were analyzed. Ajwain seed extract is extracted by soxhlet extraction method and then analyzed by GC-MS. Total of nine compounds were found and quantified in this study. The major bioactive compounds in Ajwain seed extract are 3,5-dimethylanisole (83.19%), 6-octadecenoic acid, methyl ester, (Z)-, 7-octadecenoic acid, methyl ester (7.42%), and 2-cyclohexyl-2,5-cyclohexadiene-1,4-dione, 4-oxime (3.01%).

scholarly journals ANTIDIABETES ACTIVITIES EXTRACT HEXANE FROM THE PEELS OF ARTOCARPUS CAMANSI BLANCO FRUIT

2018 ◽  
Vol 11 (13) ◽  
pp. 12
Author(s):  
Rosnani Nasution ◽  
Chairani Nur Fitrah ◽  
Hira Helwati ◽  
Murniana Murniana ◽  
Bastian Arifin ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Methyl Ester ◽  
Crude Extract ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Gas Chromatography Mass Spectrometry ◽  
Hexadecanoic Acid ◽  
Activity Test ◽  
Acid Methyl ◽  
Test Result

 Objective: The purpose of this research is to know the chemical compound from the n-hexane extract of Kulu (Artocarpus camansi Blanco) fruit peels and to know its antidiabetes activity against male Swiss Webster mice.Methods: Samples were macerated with n-hexane solvent, then the extracts were obtained, was characterization with gas chromatography-mass spectrometry (GC-MS), and then the extract separated by column chromatography. The results obtained were tested by antidiabetes action with glucose tolerance method.Results: Anti-diabetic activity test result showed that the most active sample to decrease the blood glucose of mice was n-hexane crude extract, at minute 90th, activeness was 65.59%, compared to glibenclamide, then group of fraction A, at minute 90th, activeness 65.58% compared glibenclamide, whereas isolate D11, its activity is 60.11% and 60.12%, at minute 60th and 90 min compared to glibenclamide. Concentrated extracts were characterized by GC-MS, shows the major compounds are hexadecanoic acid methyl ester (30.14%), 9,12-octadecadienoyl chloride, (Z, Z) - (8.44%) and 9-octadecenoic acid, methyl ester (30,91%) also were obtained a compound like an β-amyrin acetate.Conclusion: The most active sample to decrease the blood glucose of mice was n-hexane crude extract, and the major compounds are hexadecanoic acid methyl ester (30.14%), 9,12-octadecadienoyl chloride, (Z, Z) - (8.44%) and 9-octadecenoic acid, methyl ester (30.91%).

Fatty Acid Composition of Seeds of Satureja thymbra and S. cuneifolia

2003 ◽  
Vol 58 (7-8) ◽  
pp. 502-504 ◽  
Author(s):  
Ahmet C. Gören ◽  
Gökhan Bilsel ◽  
Mehmet Altun ◽  
Fatih Satıl
Keyword(s):  
Fatty Acid ◽  
Methyl Ester ◽  
Methyl Esters ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Octadecatrienoic Acid ◽  
Octadecanoic Acid ◽  
Hexadecanoic Acid ◽  
Acid Methyl ◽  
Main Components

Abstract The chemical composition of fatty acid methyl esters (FAMEs) from seeds of S. thymbra and S. cuneifolia were analyzed by GC/MS. 7 FAMEs were identified from the seeds of S. thymbra mainly as 9-octadecenoic acid methyl ester (43.9%), hexadecanoic acid methyl ester (11.4%), 9,12,15-octadecatrienoic acid methyl ester (Z,Z,Z) (30.2%), and octadecanoic acid methyl ester (14.1%), while from the seed of S. cuneifolia 10 FAMEs were obtained with the main components, similar to S. thymbra. These were identified as 9-octadecenoic acid methyl ester (10.1%), hexadecanoic acid methyl ester (methyl palmitate, 34.6%), 9,12,15-octadecatrienoic acid methyl ester (Z,Z,Z) (6.3%) and octadecanoic acid methyl ester (1.8%).

scholarly journals Chemosensory response of the Phaseolus vulgaris L. (Fabaceae) weevil (Bruchus chinensis Linnaeus, 1758 (Coleoptera: Bruchidae)) to Dioscorea sansibarensis Pax. (Dioscoreaceae) bulbil essential oil

2019 ◽  
Vol 88 (2) ◽  
pp. 183-195 ◽  
Author(s):  
Godfrey Omare Mauti ◽  
Peter F. Kasigwa ◽  
Joan J.E. Munissi ◽  
Justus M. Onguso
Keyword(s):  
Methyl Ester ◽  
Phaseolus Vulgaris ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Design Experiment ◽  
Hexadecanoic Acid ◽  
Botanical Pesticide ◽  
Acid Methyl ◽  
Randomized Design ◽  
Completely Randomized Design

Abstract Dioscorea sansibarensis bulbils are well known for their toxicity and medicinal applications. In this study, the attraction and mortality of the Phaseolus vulgaris weevil (Bruchus chinensis) caused by Dioscorea sansibarensis bulbil oil was examined in a Completely Randomized Design experiment using a Y-tube olfactometer on a laboratory bench. Statistical analysis at P < 0.05 showed 10 µL had an attraction of 42.67%. In the case of mortality, the results showed that Phaseolus vulgaris seeds treated with 40 µL of the bulbil oil had a harmonic mean of 55.8% mortality of the weevil population, which was higher than with 10 µL of Actellic 50 EC. GC-MS analysis identified 17 compounds in the bulbil oil, the main constituents of which were 2- pentanone, 4-hydroxy-4-methyl- (17.8%), phenol, 4-ethyl- (11.41%), hexadecanoic acid, methyl ester (11.05%), phenol (7.35%), 9-octadecenoic acid, (E)- (7.2%) and phenol, 4-ethyl-2-methoxy- (7.14%). Attraction by bulbil oil may have been due to the presence of phenolic compounds, and mortality may have been due to hexadecanoic acid, methyl ester and 9-octadecenoic acid, (E)-. Attractants are used for the surveillance and detection of an infestation in stored products. The added advantage of the bulbil oil to cause mortality makes Dioscorea sansibarensis bulbil oil useful in the formulation of a botanical pesticide in stored pest management.

scholarly journals BIOCHEMICAL PROFILE OF Calotropis procera FLOWERS

2021 ◽  
Vol 27 (3) ◽  
pp. 341-349
Author(s):  
Malik Fiaz Hussain Ferdosi ◽  
Iqra Haider Khan ◽  
Arshad Javaid ◽  
Ayesha Munir
Keyword(s):  
Methyl Ester ◽  
Octadecadienoic Acid ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Calotropis Procera ◽  
Biochemical Profile ◽  
Hexadecanoic Acid ◽  
Flower Extract ◽  
Acid Methyl ◽  
Peak Areas

Calotropis procera is a medicinal weed of family Asclepiadaceae. This study was carried out to explore the biochemical profile of C. procera flowers collected from Southern Punjab region of Pakistan. Methanolic flower extract of C. procera was subjected to GC-MS analysis. There were 30 compounds identified in this extract. The predominant compound was γ-sitosterol with 15.39% peak area. Other abundantly occurring compounds included stigmasterol (9.22%), 9,12-octadecadienoic acid (Z,Z)-, methyl ester (9.01%), campesterol (8.63%), α-amyrin acetate (8.25%), β-amyrin (8.09%), hexadecanoic acid, methyl ester (7.91%), 11-octadecenoic acid, methyl ester (6.15%), and 2-methoxy-4-vinylphenol (5.66%). Moderately abundant compounds included nonacos-1-ene (2.83%), methyl stearate (1.57%), pentacosane (1.44%), phytol (1.33%), heptacos-1-ene (1.20%), heneicosane (1.19%), and 1-hexacosene (1.09%). The remaining less abundant compounds were present with peak areas less than 1%. Literature survey showed that the major compounds identified in the flower extract of C. procera possess various bioactivities including antidiabetic, anticancer, antihyperglycemic, antioxidant, antimicrobial and anti-inflamatory.

Comparative GC-MS Analysis of Nine Different Seasonal Flowers Growing in Selected Region of Pakistan

2019 ◽  
Vol 41 (5) ◽  
pp. 893-893
Author(s):  
Sidra Rehman Sidra Rehman ◽  
Nighat Sultana Nighat Sultana ◽  
Dildar Ahmad Dildar Ahmad ◽  
Tasawar Sultana Tasawar Sultana ◽  
Kashif Syed Haleem Kashif Syed Haleem
Keyword(s):  
Mass Spectrum ◽  
Methyl Ester ◽  
Volatile Compounds ◽  
Plantago Lanceolata ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Hexadecanoic Acid ◽  
Acid Methyl ◽  
Ethylhexyl Phthalate ◽  
Ixora Coccinea

Seasonal flowers contribute in the attraction and fragrances of volatile compounds. These flowers volatiles also contribute in the protection of plants from different diseases. The current study was aimed to analyze and identify the flowers volatile from seasonal flowers grown in Hazara. For this purpose a comparative study of volatile compounds from aqueous fractions of nine different seasonal flowers in terms of qualitative and quantitative composition was done by gas chromatography-mass spectrometry (GC/MS). The mass spectrum of unknown compounds was identified by comparing the mass spectrum of known compounds using NIST 5 library search program and available standards library. Total 67 compounds were identified belongs to different classes of organic compounds i.e esters, fatty acyls, terpenoid, saponins, tannins, alkaloids, aldehydes, ketones and hydrocarbons. 10 compounds were identified in Veronica chamaedrys, 12 in Ligustrum sinense, 11 in Ixora coccinea, 11 in Gazania rigens, 11 in Ligustrum lucidum, 14 in Amaryllis belladonna, 8 in Plantago lanceolata, 15 in Rosa indica and 26 in Callistemon viminalis. The main compounds in nine different seasonal flowers were mono(2-ethylhexyl) phthalate, n-hexadecanoic acid, phytol, 6-octadecenoic acid, methyl ester, (Z)-, hexadecanoic acid, methyl ester, beta cubebene, caryophyllen, phenylethyl alcohol, 4H-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl-, benzaldehyde, 2-hydroxy-4-methyl-, bicyclo[2.2,1]heptane-1 carboxylic acid, 7,7,dimethyl-2-oxo-, 2-furancarboxaldehyde, 5-(hydroxymethyl)-, γ.-sitosterol, methyl gallate, pyrogallol, α-linolenic acid, 11-octadecenoic acid, methyl ester, lupeol, 2-cyclopenten-1-one, 2-hydroxy-, 1,2-benzenediol, β.-sitosterol, octadecanoic acid, oleic acid, 9, 12-octadecadienoic acid (Z,Z)-, 1-heptacosanol, spirost-8-en-11-one, 3-hydroxy-, (3,14,20,22 β.,5. α, 25R)-, 2-cyclopenten-1-one, 2-hydroxy-, eucalyptol, spiro[4,5]decan-7-one,1,8-dimethyl-8,9-epoxy-4-isopropyl.. Some compounds were detected in all nine flowers such as mono (2-ethylhexyl) phthalate. The concentration of this compound was more in Veronica chamaedrys (28.851%) and on the other hand having fewer amounts in flower Ixora coccinea (0.218%) and some compounds identified only in one flower such as caryophyllene. Most of the compounds were present in all selected flower while there were also some unique compounds which were present in one flower while absent in other. It shows that specific properties of flower associated with these unique compounds. Similarly, identified compounds suggested their role in the field of medicines and pharmaceutical sciences which need further investigations.

Study on Medicinal Properties of Red 1%NaOH Extractives of Castanopsis Fissa Wood by GC/MS

2008 ◽  
Vol 575-578 ◽  
pp. 1272-1275
Author(s):  
Zhong Feng Zhang ◽  
Wan Xi Peng ◽  
Kai Fu Li ◽  
Qing Zhi Ma
Keyword(s):  
Methyl Ester ◽  
Ethyl Ester ◽  
Octadecenoic Acid ◽  
Acid Methyl Ester ◽  
Acid Ethyl Ester ◽  
Ethyl Linoleate ◽  
Chemical Components ◽  
Hexadecanoic Acid ◽  
Acid Methyl ◽  
Medicinal Properties

The chemical components of red 1%NaOH extractives of Castanopsis fissa wood chips were separated and identified by GC/MS after enriching and dissolving in benzene-methanol. Relative content of each component was determined by area normalization. 24 compounds representing 71.87 % of the extractives were identified. The most abundant constituents were hexadecanoic acid,methyl ester(17.08%), 9-octadecenoic acid (z)-,methyl ester (cas) (15.08%), 2,3-diphenyl-5-(3-methoxyphenyl)pyrrole(7.05%), hexadecanoic acid,ethyl ester (cas) (7.02%), 9,12-octadecadienoic acid (z,z)-,methyl ester(4.82%), 9-octadecenoic acid (z)-,ethyl ester (cas) (4.70%), octadecanoic acid,methyl ester(2.66%), 10-methoxy-nb-à-methylcorynantheol(1.90%), di-(9-octadecenoyl)-glycerol(1.70%),ethyl linoleate(1.09%), 9-octadecenoic acid (z)-,methyl ester (cas) (1.03%), eicosanoic acid,methyl ester(1.01%), and so on.

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