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Journal articles on the topic 'Megastigmatrienon'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Weyerstahl, Peter, Thomas Meisel, Klaus Mewes, and Shoreh Negahdari. "Struktur und Geruch, XIII. Synthese und olfaktorische Eigenschaften von Megastigmatrienon-Analoga." Liebigs Annalen der Chemie 1991, no. 1 (1991): 19–25. http://dx.doi.org/10.1002/jlac.199119910104.

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2

Yang, H., J. Liu, K. Li, X. Yin, X. Tan та J. Wang. "Synthesis of 3-Oxo-α-ionol Ethyl Carbonate and its Conversion to Megastigmatrienones in Tobacco Smoke". Beiträge zur Tabakforschung International/Contributions to Tobacco Research 19, № 7 (2001): 339–43. http://dx.doi.org/10.2478/cttr-2013-0721.

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Abstract3-Oxo-α-ionol ethyl carbonate, a precursor of megastigmatrienones was prepared by reduction of α-ionone to α-ionol, followed by esterification with ethyl chloroformate and then by oxidation with t-butyl chromate. The total yield was about 23%. Infrared (IR) and mass spectra of this compound were determined. Upon smoking, cigarettes to which 0.002% by weight of the titled compound was added had an improved and more harmonious flavor. The smoke was sweeter and had a cleaner after taste. Experimental results suggest that the title compound added to the tobacco pyrolyzes to form megastigma
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3

Slaghenaufi, Davide, Marie-Claire Perello, Stéphanie Marchand, and Gilles de Revel. "Quantification of megastigmatrienone, a potential contributor to tobacco aroma in spirits." Food Chemistry 203 (July 2016): 41–48. http://dx.doi.org/10.1016/j.foodchem.2016.02.034.

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4

Ito, Nobuhiko, Takeaki Etoh, Hisahiro Hagiwara, and Michiharu Kato. "Novel synthesis of degradation products of carotenoids, megastigmatrienone analogues and blumenol-A." Journal of the Chemical Society, Perkin Transactions 1, no. 10 (1997): 1571–80. http://dx.doi.org/10.1039/a607028k.

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5

ITO, N., T. ETOH, H. HAGIWARA, and M. KATO. "ChemInform Abstract: Novel Synthesis of Degradation Products of Carotenoids, Megastigmatrienone Analogues and Blumenol-A." ChemInform 28, no. 41 (2010): no. http://dx.doi.org/10.1002/chin.199741230.

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6

WEYERSTAHL, P., T. MEISEL, K. MEWES, and S. NEGAHDARI. "ChemInform Abstract: Structure-Odor Correlation. Part 13. Synthesis and Olfactive Properties of Megastigmatrienone Analogues." ChemInform 22, no. 17 (2010): no. http://dx.doi.org/10.1002/chin.199117234.

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7

Weyerstahl, Peter, and Kai Licha. "Structure-odor correlation, XXV. Synthesis and Olfactory Properties of the “Inverse” Megastigmatrienone and Its Analogs." Liebigs Annalen 1997, no. 9 (1997): 1919–24. http://dx.doi.org/10.1002/jlac.199719970918.

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8

Slaghenaufi, Davide, Marie-Claire Perello, Stéphanie Marchand-Marion, Sophie Tempere, and Gilles de Revel. "Quantitative solid phase microextraction – Gas chromatography mass spectrometry analysis of five megastigmatrienone isomers in aged wine." Analytica Chimica Acta 813 (February 2014): 63–69. http://dx.doi.org/10.1016/j.aca.2014.01.019.

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9

Cerdeira, Antonio L., Charles L. Cantrell, Franck E. Dayan, John D. Byrd, and Stephen O. Duke. "Tabanone, a New Phytotoxic Constituent of Cogongrass (Imperata cylindrica)." Weed Science 60, no. 2 (2012): 212–18. http://dx.doi.org/10.1614/ws-d-11-00160.1.

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Cogongrass is a troublesome, invasive weedy species with reported allelopathic properties. The phytotoxicity of different constituents isolated from roots and aerial parts of this species was evaluated on garden lettuce and creeping bentgrass. No significant phytotoxic activity was detected in the methylene chloride, methanol, or water extracts when tested at 1.0 mg ml−1. However, the total essential oil extract of cogongrass aerial parts was active. Bioactivity-guided fractionation of this extract using silica gel column chromatography led to the identification of megastigmatrienone, 4-(2-but
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10

Rani Sebastian, Jayakar B, and Gomathi V. "Phytochemical screening and GC MS analysis of methanolic extract of Abelmoschus moschatus." International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 3049–52. http://dx.doi.org/10.26452/ijrps.v11ispl4.4604.

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The study was designed to evaluate the phytoconstituents present in the methanolic extract of aerial parts of Abelmoschus moschatus. The qualitative phytochemical screening of different extracts of aerial parts revealed the presence of some bioactive compounds. GC – MS analysis was performed using Shimadzu Gas chromatography-mass spectroscopy (Model Number: QP2010S) instrument. GC-MS detection of phytoconstituents was done by computer evaluation of mass spectra of samples through National Institute Standard and Technology (NIST II) and WILEY 8 library. GC – MS analysis detected the presence of
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11

Coleman, WM. "Gas Chromatographic-Selected Ion Monitoring-Mass Spectrometric Determination of Cigarette Mainstream Smoke Components with Sensory Attributes." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 21, no. 3 (2004): 175–83. http://dx.doi.org/10.2478/cttr-2013-0778.

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AbstractA new method has been developed that detects significant quantitative differences in the amounts of pyrazines, pyridines, furfurals, carboxylic acids, b-damascenone, sclareolide, and megastigmatrienones in the mainstream smoke of a series of five commercial cigarettes. This new quantitative method is based on the gas chromatographic-selected ion monitoring-mass spectrometric (GC-SIM-MS) determination of the selected smoke constituents. The accuracy and precision of the approach were well within acceptable parameters with the majority of cases relative standard deviation (RSD) values co
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12

Weyerstahl, Peter, Kai Licha, and Helga Marschall. "Structure-Odor Correlation, XX. Synthesis and Olfactory Properties of the “Irone-Type Homolog” of Megastigmatrien-3-one." Liebigs Annalen der Chemie 1994, no. 9 (1994): 917–20. http://dx.doi.org/10.1002/jlac.199419940912.

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13

Mahdavi, Saman, Mojtaba Kheyrollahi, Hossein Sheikhloei, and Alireza Isazadeh. "Antibacterial and Antioxidant Activities of Nasturtium officinale Essential Oil on Food Borne Bacteria." Open Microbiology Journal 13, no. 1 (2019): 81–85. http://dx.doi.org/10.2174/1874285801913010081.

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Introduction: The use of synthetic preservatives has been increasing in the food industry, and this leads to an increased incidence of gastrointestinal diseases and cancers in humans in the long run. Aims & Objectives: The aim of this study was to investigate the antibacterial and antioxidant activities of Nasturtium officinale essential oil on some important food borne bacteria. Materials & Methods: In this study, the antibacterial activity of N. officinale essential oil was evaluated on Staphylococcus aureus, Bacillus cereus, Escherichia coli and Salmonella enteric by microdilution m
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14

Radulović, Niko S., Vojkan M. Miljković, Marko Z. Mladenović, and Goran S. Nikolić. "Essential Oils of Morus alba and M. nigra Leaves: Effect of Drying on the Chemical Composition." Natural Product Communications 12, no. 1 (2017): 1934578X1701200. http://dx.doi.org/10.1177/1934578x1701200133.

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Detailed GC and GC/MS analyses of essential-oil samples obtained by hydrodistillation of Morus alba L. and M. nigra L. leaves (four samples) allowed the identification of 131 constituents representing 95.1 – 96.4% of the total GC peak areas. The most abundant compounds classes were alkanes, diterpenoids, carotenoid-derived compounds and fatty acid-related constituents with trans-phytol (7.9 – 71.2%), ( E,E)-geranyl linalool (0.2 – 8.0%), ( Z)-bovolide (8.1%) and n-chain alkanes (in total, 17.5 – 52.4%) as the major constituents of the analyzed samples. In general, there were only quantitative
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15

WEYERSTAHL, P., K. LICHA, and H. MARSCHALL. "ChemInform Abstract: Structure-Odor Correlation. Part 20. Synthesis and Olfactory Properties of the “Irone-Type Homologue” of Megastigmatrien-3-one." ChemInform 26, no. 6 (2010): no. http://dx.doi.org/10.1002/chin.199506211.

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16

Khan, Nausheen, Abdul Qadir, Musarrat Husain Warsi, Amena Ali, Abu Tahir, and Abuzer Ali. "Identification of the Phytoconstituents in Methanolic Extract of Adhatoda vasica L. Leaves by GC-MS Analysis and its Antioxidant Activity." Journal of AOAC INTERNATIONAL, August 30, 2021. http://dx.doi.org/10.1093/jaoacint/qsab113.

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Abstract Background Adhatoda vasica L. is a medicinal plant, also known as Malabar nut in English, belongs to family Acanthaceae. It has been used traditionally to treat respiratory disorders like severe cough, cold, chronic bronchitis, asthma, tuberculosis, and other illnesses. The multifunctional range of bioactives found in it has piqued the interest of pharmaceutical companies, who are looking for more evidence-based ways to develop new formulations. Method Methanolic extract of Adhatoda vasica L. leaves (MEAV) was analysed by hyphenated gas chromatography-mass spectroscopy for identificat
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