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    Wyświetlanie 1-5 z 5
    Tytuł:
    Characterization of Catechins from Smilax domingensis Willd. in Cuba
    Autorzy:
    Soledispa, Pilar A.
    González, José
    Cuéllar, Armando
    Pérez, Julio
    Monan, Max
    Powiązania:
    https://bibliotekanauki.pl/articles/1077467.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    GC/MS
    Smilax domingensis
    catechins
    ethanolic extract
    flavanols
    Opis:
    Gas Chromatography coupled with mass spectrometry was applied to study the fragmentation of selected flavonoids from the ethanolic extract of Smilax domingensis Willd., Smilacaceae, known as zarzaparrilla, after Soxhlet extraction during 20 hours. Compounds belonging to one of the major subgroups found in common plants, i.e. flavanols were studied. Following solvent extraction and derivatization using BSTFA, possibly two different metabolites from the same chemical group were characterized in one analytical run: (+)-catechin and (-)-epicatechin. For the very first time, qualitative data on these analytes in the drug were determined after detailed validation of a sensitive, cheap and reliable GC-MS method.
    Źródło:
    World News of Natural Sciences; 2019, 23; 297-305
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antimicrobial studies and phytochemical analysis of the fruits and leaves of Cnestis ferruginea
    Autorzy:
    Ebana, R. U. B.
    Edet, U. O.
    Atang, D. E.
    Iyere, L. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1076689.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Antimicrobials
    Cnestis ferruginea
    GC-MS
    Phytochemicals
    clinical isolates
    resistance
    Opis:
    Few studies have shown that Cnestis ferruginea possess some therapeutic properties. The present study was aimed screening the extracts of the fruits and leaves of Cnestis ferruginea for phytochemicals using crude screening and gas chromatography-mass spectrophotometer (GC-MS) methods, and also antimicrobial activity against clinical isolates. Preparation of the extracts (aqueous and ethanolic), identification of isolates, and antimicrobial sensitivity were done using previously reported standard methodologies. Replicate readings for the antimicrobial sensitivity were analysed using analysis of variance at 95% level of significance. The result of the crude qualitative screening revealed the presence of phenol, terpenes, alkaloids, saponins, tannin and polyphenol in various amounts in both the leaves and fruits. Quantitative analysis using GC-MS revealed a total of 14 similar phytochemicals each in the leaves and fruits of the study plant in varying amounts. In the fruits, phenol had the highest concentration of 15.01%, followed by terpenes (10.64%), alkaloid (5.43%), and tannins (5.16%). Others were anthocyanins, phytate, phytosterol, steroids, saponins, cardiac glycosides, oxalate, flavonoids, cyanogenic glycosides and coumarin with concentrations that ranged from to 0.01- 4.21%. On the other hand, in the leaves, alkaloids had the highest concentration of 31.62%, followed by phenol (20.59%), phytate (15.18%), and tannin (12.34%). Others include were flavonoid, terpenes, phytosterol, cardiac glycosides, saponins, cyanogenic glycosides, oxalate, anthocyanins, steroids and coumarin with concentrations that ranged from 0.16-8.45%. The isolates were identified as Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and Proteus spp. The results of the antimicrobial sensitivity revealed varying zones of inhibitions; however, it increased as the concentration of the extract increased. The observed highest zones of inhibitions were 33.86 mm for the fruit ethanolic extract and 30.56 mm for the aqueous extract of the leaves against Proteus and Staphylococcus aureus, respectively.
    Źródło:
    World News of Natural Sciences; 2019, 25; 188-198
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spectroscopic analysis of phytochemical compounds in Garcina kola leaf extract
    Autorzy:
    Anadebe, V. C.
    Okafor, N. A.
    Okafor, B. O.
    Emmanuel, C. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/1113583.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    FTIR Analysis
    GC-MS
    Garcina kola leaf
    Phytochemical Analysis
    Opis:
    Garcina kola leaves were collected, washed, dried and powdered. The ethanol extracts were first prepared by the simple method of cold extraction. The extracts were then characterized by the Phytochemical analysis, Fourier transform infrared spectroscopy (FTIR) and Gas chromatography mass spectroscopy (GC-MS) to identify the fatty acids and heterocyclic compounds present in the leaf extracts. The FTIR analysis shows a variation of the peaks that indicate there is synergy among the functional groups of the extract. Moreover, the phytochemical analysis revealed the presence of alkaloids, flavonoids, phenol, saponins, tannins and steroids. The study reveals that the chemical constituents of Garcina kola leaf may be behind their medicinal values in phytomedicine.
    Źródło:
    World News of Natural Sciences; 2017, 15; 162-168
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diesel hydrocarbons biodegradation by Myroide odoratimimus
    Autorzy:
    Divya, U. K.
    Saranya, A.
    Suganthi, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1109628.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biodegradation
    Diesel
    Diesel hydrocarbon
    GC-MS analysis
    Myroide odoratimimus
    Soil
    Opis:
    Biodegradation can be a possible and effective retort to soil contamination by petroleum hydrocarbons. Nowadays there are many cases of accidental releases of petroleum products into the environment. Use of biological agents especially microorganism is effective in degradation of complex organic contaminants to other simpler organic compounds. In our present study role of Myroide odoratimimus in degrading the diesel components present in soil to simpler units were checked. The study demonstrates that Myroides odoratimimus (SKS 05) showed the ability to degrade diesel after 40 days of incubation in the diesel adsorbed soil with a growth rate of 6.2×106 CFU/ml and from the GC study Myroides odoratimimus degraded the component Dotriacontane (25.471), Hexatriacontane (27.98), Tetracosane (30.296), Pentatriacontane (32.42), Tetrapentacontane (34.39) present in the diesel adsorbed soil, which was confirmed by the reduction in the peak height and the peak area in comparison to the control {without Myroides odoratimimus (SKS 05).
    Źródło:
    World News of Natural Sciences; 2018, 20; 182-195
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of phytochemical constituents of Methanol extract of Moringa oleifera Lam. whole leaf by Gas Chromatography-Mass Spectrometry and Fourier transform infrared spectroscopy analysis
    Autorzy:
    Okechukwu, Victor Uchechukwu
    Eze, Sunday Onyekwere
    Omokpariola, Daniel Omeodisemi
    Okereke, Janefrancess Chinemerem
    Powiązania:
    https://bibliotekanauki.pl/articles/1031420.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    FT-IR analysis
    GC-MS analysis
    Moringa oleifera
    methanol extract
    phytochemical constituents
    Opis:
    The research study evaluated the phytochemical constituents of Methanol extracts of Moringa oleifera whole leaf by Gas Chromatography-Mass Spectrometry (GC-MS) and Fourier transform infrared spectroscopy (FT/IR) analysis. The leaves was washed, air dried for 2 weeks, then ground into a fine powder and extracted using methanol by maceration for 24 hours using standard procedures. After the contact time elapsed, the solvent filtered to recover the extract. The functional groups and the chemical constituents of the methanol extract of Moringa oleifera leaves investigated using Fourier transform infrared spectroscopy (FT/IR) and Gas Chromatography-Mass Spectrometry (GC-MS) respectively. The FT/IR analysis confirmed the presence of O-H, C=C, C-H, C-O, CH3 and C=C-H bond stretching functional groups, which indicates that the substance is an aliphatic alcohol, ester, aldehyde and carboxylic acid. However, the fingerprint region had a pattern that is specific for every molecule, the presence of -OH function and N-O stretch; suggest that or alcohols and nitrogen or aromatic or aliphatic phenols containing molecules are major components of the Moringa oleifera leaf studied. GC-MS analysis of the extract reveals the identification of twenty compounds, in which two compounds were identified in each peak. N,N'-Pentamethylenebis[s-3-aminopropyl thiosulfuric acid and 2-Myristynoyl pantetheine (100%), 2-Myristynoyl pantetheine and Deoxyspergualin (92.05%), 5-Octadecenal and 9-Hexadecenoic acid (27.94%). N,N'-Pentamethylenebis[s-3-aminopropyl thiosulfuric acid and Pentetic Acid are the major phytoconstituents. Most of the compounds in the list are bioactive and possess medicinal properties, which further justify the application of Moringa oleifera traditional plant in the discovery of novel therapeutics.
    Źródło:
    World News of Natural Sciences; 2021, 37; 18-30
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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