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Journal articles on the topic 'Indole GC-MS Analysis'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Trivedi, Mahendra Kumar, Alice Branton, Dahryn Trivedi, Gopal Nayak, Kalyan Kumar Sethi, and Snehasis Jana. "Isotopic Abundance Ratio Analysis of Biofield Energy Treated Indole Using Gas Chromatography-Mass Spectrometry." Science Journal of Chemistry 4, no. 4 (2016): 41–48. https://doi.org/10.11648/j.sjc.20160404.11.

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The objective of the current experiment was to evaluate the effect of biofield energy treatment on the isotopic abundance ratio of PM+1/PM (2H/1H or 13C/12C or 15N/14N) in indole using the gas chromatography-mass spectrometry (GC-MS). The sample of organic compound indole was divided into two parts - one part was designated as a control sample (untreated), and another part was considered as biofield energy treated sample, which was subjected to Mr. Trivedi’s biofield energy treatment (The Trivedi Effect®). The biofield energy treated indole sample was analyzed at different time inter

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2

Trivedi, Mahendra Kumar, Alice Branton, Dahryn Trivedi, Gopal Nayak, Kalyan Kumar Sethi, and Snehasis Jana. "Isotopic Abundance Ratio Analysis of Biofield Energy Treated Indole Using Gas Chromatography-Mass Spectrometry." Science Journal of Chemistry 4, no. 4 (2016): 41–48. https://doi.org/10.5281/zenodo.196928.

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The objective of the current experiment was to evaluate the effect of biofield energy treatment on the isotopic abundance ratio of PM+1/PM (2H/1H or 13C/12C or 15N/14N) in indole using the gas chromatography-mass spectrometry (GC-MS). The sample of organic compound indole was divided into two parts - one part was designated as a control sample (untreated), and another part was considered as biofield energy treated sample, which was subjected to Mr. Trivedi’s biofield energy treatment (The Trivedi Effect®). The biofield energy treated indole sample was analyzed at different time inter

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3

Gutierrez, Casandra K., George Y. Matsui, David E. Lincoln, and Charles R. Lovell. "Production of the Phytohormone Indole-3-Acetic Acid by Estuarine Species of the Genus Vibrio." Applied and Environmental Microbiology 75, no. 8 (2009): 2253–58. http://dx.doi.org/10.1128/aem.02072-08.

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ABSTRACT Strains of Vibrio spp. isolated from roots of the estuarine grasses Spartina alterniflora and Juncus roemerianus produce the phytohormone indole-3-acetic acid (IAA). The colorimetric Salkowski assay was used for initial screening of IAA production. Gas chromatography-mass spectroscopy (GC-MS) was then employed to confirm and quantify IAA production. The accuracy of IAA quantification by the Salkowski assay was examined by comparison to GC-MS assay values. Indole-3-acetamide, an intermediate in IAA biosynthesis by the indole-3-acetamide pathway, was also identified by GC-MS. Multilocus

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4

Hou, Zhiwei, Ziyue Chen, Le Li, et al. "Comparison of Volatile Compounds in Jingshan Green Tea Scented with Different Flowers Using GC-IMS and GC-MS Analyses." Foods 13, no. 17 (2024): 2653. http://dx.doi.org/10.3390/foods13172653.

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Scented green tea (Camellia sinensis) is a type of reprocessed green tea produced by scenting with flowers. To investigate the differences in the volatiles of scented green tea processed with four different flowers (Jasminum sambac, Osmanthus fragrans, Michelia alba, and Rosa rugosa), gas chromatography–ion mobility spectrometry (GC–IMS) and gas chromatography–mass spectrometry (GC–MS) were employed to detect and identify the volatile compounds in the four types of scented teas. GC–IMS and GC–MS identified 108 and 101 volatile compounds, respectively. The key characteristic volatile compounds,

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Báez, Disnelys, Diego Morales, and Jorge A. Pino. "Volatiles from Michelia champaca Flower: Comparative analysis by Simultaneous Distillation-Extraction and Solid Phase Microextraction." Natural Product Communications 7, no. 5 (2012): 1934578X1200700. http://dx.doi.org/10.1177/1934578x1200700529.

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The chemical composition of the volatile compounds isolated by simultaneous distillation-extraction (SDE) and headspace-solid phase microextraction (SPME) from flowers of Michelia champaca growing in Cuba was investigated by GC/FID and GC/MS. Sixty-seven and thirty-four components were identified by SDE and SPME, respectively, with 1,8-cineole (22.8%) as the main constituent in the volatile oil isolated by SDE, and methyl benzoate (30.3%), indole (16.6%) and β-elemene (10.4%) the major components detected by SPME.

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Bachliński, Robert, and Agnieszka Mroczek. "Identification of a synthetic cannabinoid 5F-NPB-22 (indazole analog 5F-PB-22) by gas chromatography/mass spectrometry (GC/MS) method." Issues of Forensic Science 293 (2016): 56–67. http://dx.doi.org/10.34836/pk.2016.293.1.

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This article presents the problem of transesterification of a synthetic cannabinoid 5F-NPB-22 and other structurally related indazole and indole-based compounds, such as NPB-22, 5F-PB-22, BB-22 and PB-22, caused by methanol – a solvent commonly applied in gas chromatography/mass spectrometry (GC/MS) analysis. The above process can result in drawing incorrect conclusions about the composition of analyzed product, due to the formation of ester compounds, which mainly affects the reliability of results. In the present study, in addition to the mixture of methanol and toluene, as well toluene alon

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Zhou, Xian Yan, Zhong Feng Zhang, Wan Xi Peng, and Qing Ding Wu. "DT-GC-MS Analysis on Environmental Risk of Poplar Engineering Biocomposites." Advanced Materials Research 129-131 (August 2010): 780–83. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.780.

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Poplar engineering biocomposites is a new engineering materials. In order to evaluate its potential environmental risk to human, the volatile organic compounds of poplar engineering biocomposites were adsorbed and determined by TD-GC-MS. The result were: (1) The main constituents of volatiles at 40°С were bicyclo[2.2.1]heptan-2-one, 1,7,7- trimethyl-, (1r)-(31.55%), 1,2-benzenedicarboxylic acid, mono(2-ethylhexyl) ester(14.94%), 2,6,10,14,18,22- tetracosahexaene, 2,6,10,15,19,23-hexamethyl-(7.34%), [1,1':3',1''-terphenyl]-2'-ol(5.97%), cedrol (5.29%), caryophyllene(5.26%), 3-[(1z)-1,3-butadien

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DeRuiter, Jack, Forrest Smith, Younis Abiedalla, Logan Neel, and C. Randall Clark. "GC-MS and GC-IR analysis of regioisomeric cannabinoids related to 1-(5-fluoropentyl)-3-(1-naphthoyl)-indole." Forensic Chemistry 10 (August 2018): 48–57. http://dx.doi.org/10.1016/j.forc.2018.07.005.

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9

Gould, Oliver, Ben de Lacy Costello, Amy Smart, et al. "Gas Chromatography Mass Spectrometry (GC-MS) Quantification of Metabolites in Stool Using 13C Labelled Compounds." Metabolites 8, no. 4 (2018): 75. http://dx.doi.org/10.3390/metabo8040075.

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It has become increasingly important to qualitatively and quantitatively assess the volatile metabolites in a range of bodily fluids for use in monitoring health. There has been relatively little work on the quantitative analysis of compounds, particularly with respect to the effects of ethnicity or geographic location. A novel method for the quantification of compounds in stool using 13C labelled compounds as internal standards is presented. Using thermal desorption gas chromatography mass spectrometry, stool samples from 38 healthy volunteers were analysed. The 13C labelled compounds, aceton

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10

Zeng, Lin, Yanqing Fu, Jinshui Huang, et al. "Comparative Analysis of Volatile Compounds in Tieguanyin with Different Types Based on HS–SPME–GC–MS." Foods 11, no. 11 (2022): 1530. http://dx.doi.org/10.3390/foods11111530.

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Tieguanyin (TGY) is one kind of oolong tea that is widely appreciated for its aroma and taste. To study the difference of volatile compounds among different types of TGY and other oolong teas, solid-phase microextraction–gas chromatography–mass spectrometry and chemometrics analysis were conducted in this experiment. Based on variable importance in projection > 1 and aroma character impact > 1, the contents of heptanal (1.60–2.79 μg/L), (E,E)-2,4-heptadienal (34.15–70.68 μg/L), (E)-2-octenal (1.57–2.94 μg/L), indole (48.44–122.21 μg/L), and (E)-nerolidol (32.64–96.63 μg/L) in TGY were hi

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11

Ahuchaogu, Ahamefula A., Godwin I. Ogbuehi, P. O. Ukaogo, and Ifeanyi E. Otuokere. "Gas Chromatography Mass Spectrometry and Fourier transform Infrared Spectroscopy analysis of methanolic extract of Mimosa pudica L. leaves." Journal of Drugs and Pharmaceutical Science 4, no. 1 (2020): 1–9. http://dx.doi.org/10.31248/jdps2020.031.

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The present study investigates the chemical constituents of a traditionally used ethno-medicinal plant Mimosa pudica Linn using Gas Chromatography Mass Spectrometry (GC/MS) and Fourier Transform Infrared Spectroscopy (FTIR). The identification of phytochemical compounds was based on the peak area, retention time, molecular weight, molecular formula, MS fragment ions. Thirteen phytochemical compounds were identified in the methanolic extract of leaves Mimosa pudica. The GC-MS analysis provide the existence of N, N'-Bis (Carbobenzyloxy)-lysine methyl(ester, Acetamide, N-methyl-N-[4-[4-fluoro-1-h

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Bibi, Fehmida. "Exploring bioactive compounds from a symbiotic bacterial strain of Spongiobacter sp." Bioinformation 19, no. 4 (2023): 369–74. http://dx.doi.org/10.6026/97320630019369.

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Marine sponges are a host of different symbiotic groups of bacteria playing crucial roles in the protection and survival of marine sponges. Marine symbiotic bacteria from sponges are promising sources of bioactive chemicals and are increasingly being investigated. Therefore, the present study was undertaken to analyze total compounds from active symbiotic bacterial strain from sponge, Pione vastifica. Potential bacterial strain EA276 previously isolated from P. vastifica and was identified as Spongiobacter sp. Among 57 isolates, only 42% exhibited antagonistic activity. Four major classes of b

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Li, Ping, Lei Tong, Kun Liu, Yanhong Wang, and Yanxin Wang. "Indole degrading of ammonia oxidizing bacteria isolated from swine wastewater treatment system." Water Science and Technology 59, no. 12 (2009): 2405–10. http://dx.doi.org/10.2166/wst.2009.312.

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Three new strains named LPA11, LPB11 and LPC24 were isolated to investigate the patterns of indole degradation and ammonia oxidation in swine wastewater from different parts of a swine wastewater treatment system by the direct spreading plate method. These three isolates were all identified as Pseudomonas putida based on 16S-rDNA gene sequences, main physiological and biochemical analysis. They were capable of decomposing 1.0 mM indole completely in 10, 16 and 18 days respectively. According to the results of HPLC and GC/MS, the possible pathway for the degradation was via oxindole, isatin and

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14

Pautova, Alisa, Zoya Khesina, Maria Getsina, Pavel Sobolev, Alexander Revelsky, and Natalia Beloborodova. "Determination of Tryptophan Metabolites in Serum and Cerebrospinal Fluid Samples Using Microextraction by Packed Sorbent, Silylation and GC–MS Detection." Molecules 25, no. 14 (2020): 3258. http://dx.doi.org/10.3390/molecules25143258.

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Indole-containing acids—tryptophan metabolites—found in serum and cerebrospinal fluid (CSF) samples of patients with diseases of the central nervous system (CNS) were determined with the use of microextraction by packed sorbent (MEPS) followed by silylation and gas chromatography–mass spectrometry (GC–MS) analysis. MEPS with the following silylation led to the reproducible formation of derivatives with an unsubstituted hydrogen ion in the indole ring, the chromatographic peaks of which are symmetric and can be used for GC–MS analysis without additional derivatization. The recoveries of analyte

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15

Liu, Qi Mei, and Wan Xi Peng. "Py-GC/MS Analysis of Bioactive Components of 450°C Pyrolyzate from Ethanol Extractives of Oil-Tea Cake." Key Engineering Materials 480-481 (June 2011): 513–18. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.513.

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450°C-based pyrolysis- GC/MS technology was used to analyze the bioactive components of ethanol extractives of oil-tea cake. The analytical result showed that 38 peaks were obtained from the 450°C-based pyrolyzate of ethanol extractives of oil-tea cake, and 37 compounds representing 97.81 % of the total areas were identified (Table 1). The analytical result showed that the main components of ethanol extractives of oil-tea cake by 450°C-based pyrolysis- GC/MS were as: Benzene, 1,2,3-Trimethoxy-5-Methyl- (21.56%), Phenol, 3,4-Dimethoxy- (16.31%), 3',5'-Dimethoxyacetophenone (14.37%), 1,2-Ethaned

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16

Casey, Christine R., Thomas Conley, Andrea Heise, Terri Thomas, and Patrick R. Ayres. "Quantitative and Qualitative Analysis of Mitragynine in Kratom (Mitragyna Speciosa) by GC-MS, LC-MS/MS and UPLC-PDA." Journal of Regulatory Science 3, no. 2 (2016): 1–14. http://dx.doi.org/10.21423/jrs-v03n02p001.

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In 2011, emergency rooms on theWest Coast had patients showing up with opiate/heroin withdrawal symptoms from Kratom. Mitragyna speciosa, or Korth (Thai name Kratom; Rubiaceae) is a medical plant native to Thailand and other Southeast Asian countries and is presently illegal in Thailand and other European countries [1]. In the United States, Kratom is readily available via the internet and local retail stores.The leaves of Mitragyna speciosa consist of two primary active alkaloids: Mitragynine 66.2%, and 7 -hydroxy-7H-mitragynine 2.0%, and three indole alkaloids: Paynantheine 8.6%, Speciogynin

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17

Ullah, Ihsan, Khalid M. S. Al-Ghamdi, Yasir Anwar, and Jazem A. Mahyoub. "Exploring the Insect Control and Plant Growth Promotion Potentials of Endophytes Isolated From Calotropis procera Present in Jeddah KSA." Natural Product Communications 15, no. 3 (2020): 1934578X2091286. http://dx.doi.org/10.1177/1934578x20912869.

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Pseudomonas bacteria are entomopathogenic that can naturally infect and kill insects upon ingestion. The insecticidal and plant growth-promoting roles of the bacteria were assessed by applying Pseudomonas IUK001 to insects and plants. The culture extract (CE) of IUK001 at the concentration of 1 mL/cm3 of an artificial diet was used as a treatment for Galleria mellonella larvae. The CE was heat stable at 70°C for 30 minutes and proteinase-K stable, showing 100% and 90% insecticidal activity against G. mellonella larvae. Gas chromatography–mass spectrometry (GC–MS) analysis revealed the insectic

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18

P., Karthikeyan A. V., and Sudan I. "GC-MS PROFILE OF IN VIVO AND IN VITRO SHOOTS OF CLEOME GYNANDRA L." International Journal of Pharmacy and Pharmaceutical Sciences 9, no. 10 (2017): 21. http://dx.doi.org/10.22159/ijpps.2017v9i11.17351.

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Objective: Investigation of the bioactive compounds from the ethanol shoot extracts of in vivo and in vitro plants of Cleome gynandra (C. gynandra) through GC-MS analysis. Methods: The nodal explants were cultured on Murashige and Skoog (MS) medium supplemented with different concentrations of 6-benzyl-aminopurine (BAP), kinetin-6-furfurylaminopurine (Kin) and indole 3 acetic acids (IAA) for shoot induction. In the present study, the phytochemical constituents were analyzed from the ethanol extract of in vivo and in vitro plants of C. gynandra using Gas Chromatography-Mass Spectrometry (GC-MS)

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VASANTHARAJA, Dasal, Vaithilingam RAVITCHANDIRANE, and Veerappan ANANDAN. "Anti-Microbial Activity and Spectro-Chemical Investigation of Ink Extracts of Sepiella inermis (Van Hasselt 1835)." Notulae Scientia Biologicae 6, no. 3 (2014): 273–75. http://dx.doi.org/10.15835/nsb639392.

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The crude petroleum ether and methanol ink extracts of Sepiella inermis were tested for their antimicrobial activity against human pathogenic fungi and bacteria by disc diffusion method. Spectral analysis was carried out by UV-VIS spectrophotometer, FT-IR, Raman IR and GC-MS. Of the two solvent extracts, only methanol extract was active and no activity was detected in petroleum ether extract. The human pathogenic fungus Candida albicans and bacterium Proteus vulgaris were found to be highly sensitive, with an inhibition zone of 20 and 19 mm respectively. GC-MS of methanol ink extract revealed

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20

Akhgari, Amir, Into Laakso, Hannu Maaheimo, et al. "Methyljasmonate Elicitation Increases Terpenoid Indole Alkaloid Accumulation in Rhazya stricta Hairy Root Cultures." Plants 8, no. 12 (2019): 534. http://dx.doi.org/10.3390/plants8120534.

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Methyl jasmonate is capable of initiating or improving the biosynthesis of secondary metabolites in plants and therefore has opened up a concept for the biosynthesis of valuable constituents. In this study, the effect of different doses of methyl jasmonate (MeJA) elicitation on the accumulation of terpenoid indole alkaloids (TIAs) in the hairy root cultures of the medicinal plant, Rhazya stricta throughout a time course (one-seven days) was investigated. Gas chromatography-mass spectrometry (GC-MS) analyses were carried out for targeted ten major non-polar alkaloids. Furthermore, overall alter

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21

Bi, Shijie, Na Li, Gao Gong, Peng Gao, Jinfang Zhu, and Batuer Abulikemu. "Elucidating Volatile Flavor Profiles and Metabolic Pathways in Northern Pike (Esox lucius) During Superchilled Storage: A Combined UPLC-Q-TOF/MS and GC-MS Approach." Foods 14, no. 15 (2025): 2556. https://doi.org/10.3390/foods14152556.

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Temperature is the most critical factor in fish preservation. Superchilled storage represents a novel technology that effectively retards quality deterioration in aquatic products. This study investigated the flavor variation patterns and deterioration mechanisms in 16 northern pike (Esox lucius) samples during superchilled storage (−3 °C) based on analysis using gas chromatography-ion mobility spectrometry (GC-IMS) and ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS). The results indicate that GC-MS analysis identified 25 key volatile flavor

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22

Hassan, Abubakar, Alam Ozair, Tukur Mukhtar, Suleiman Mustapha, Muazu Alhaji Safiya, and Yusuf Amina Jega. "An In Silico Molecular Docking and ADMET Studies of Some GC-MS Analysed Compounds from Methanol Extract of Mitracapus hirtus." Journal of Biochemicals and Phytomedicine 3, no. 1 (2024): 21–35. https://doi.org/10.34172/jbp.2024.7.

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Introduction: Fungal infections, particularly in Nigeria, represent a significant public health concern and are among the most prevalent infections in Sub-Saharan Africa. Methods: An in silico molecular docking and ADMET analysis were conducted on several GC-MS-analyzed compounds targeting two fungal enzymes—Squalene Synthase (SS) and Lanosterol-14α Demethylase (14α DM). The analyses were performed using PyRx software’s AutoDock tools, SwissADME, and PROTox II. Results: The docking analysis of seven selected compounds from the GC-MS analysis, including Methyl 3-[(3-chlorophenyl)methyl]-2-cyclo

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23

Jensen, M. T., and L. L. Hansen. "Feeding with chicory roots reduces the amount of odorous compounds in colon and rectal contents of pigs." Animal Science 82, no. 3 (2006): 369–76. http://dx.doi.org/10.1079/asc200649.

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AbstractSixteen pigs (eight entire males and eight females) were given individually two diets, control and control added 25% chopped chicory roots for 2 months before slaughter. Samples were taken from the contents in colon and rectum and subjected to GC-MS analysis for amount of odour impact compounds. The compounds 2-pentanone, ethylbutyrate, propylpropionate, butyric acid, ethyl-2-methylbutyrate, p-cresol, indole and skatole showed a significant difference between the two treatments. The esters, which have relatively pleasant, often fruity odours, increased in the chicory treatment, whereas

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24

Rath, Truptimayee, and Smaranika Pattnaik. "Screening of Antimetabolites of Interest present in a Streptomycetal isolate using Analytical tools." Research Journal of Biotechnology 20, no. 2 (2024): 195–201. https://doi.org/10.25303/202rjbt1950201.

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Secondary metabolites are the biosynthetic products of actinomycetes cells, produced against the competitors present the same niche. The study reports about production of antimetabolites from soil isolated Streptomyces sp. (LMA2) co-incubated with respective bacterial candidates (E.coli and S.aureus). The antimetabolic products could be detected through contemporary analytical tools namely, UV-Visible spectroscopy, FT-IR and GC-MS. The survival modality conferred by both co-incubated partners was further substantiated by the subculture procedure. There were putative compounds present in co-cul

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25

Ene Aloysius Chinedu, Opurum Christian Chibuzor, Iwu Irenus Chinonye, Chukwudoruo Chieme Sunday, Ibeh Raymond Chigozie, and Chinekeokwu Rufus Kelechukwu Christian. "Gas chromatography-mass spectrometry phytochemical studies of ethanol leaf extract of Annona muricata." World Journal of Advanced Research and Reviews 26, no. 3 (2025): 2673–79. https://doi.org/10.30574/wjarr.2025.26.3.2353.

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Folk medicine has taken an important place especially in developing countries where limited health services are available. However, the absence of scientific evaluation of medicinal plants may cause serious adverse effects. The phytochemical composition of the ethanolic extracts of leaves of Annona muricata was analyzed using gas chromatography -mass spectroscopy (GC-MS). The GC-MS analysis revealed thirty (30) constituents of which all were matched and identified. The major constituents were two compounds with percentage peak areas of 17.21% and 17.10%. Of the identified compounds, the outs

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Zhang, Yue, Suyoung Kang, Han Yan, et al. "Insights into Characteristic Volatiles in Wuyi Rock Teas with Different Cultivars by Chemometrics and Gas Chromatography Olfactometry/Mass Spectrometry." Foods 11, no. 24 (2022): 4109. http://dx.doi.org/10.3390/foods11244109.

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Wuyi rock tea (WRT) is one of the most famous subcategories of oolong tea, exhibiting distinct aroma characteristics with the application of different cultivars. However, a comprehensive comparison of the characteristic volatiles among WRTs with different cultivars has rarely been carried out. In this study, non-targeted analyses of volatile fragrant compounds (VFCs) and targeted aroma-active compounds in WRTs from four different cultivars were performed using chemometrics and gas chromatography olfactometry/mass spectrometry (GC-O/MS). A total of 166, 169, 166, and 169 VFCs were identified fo

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Chen, Kai-Hsien, Anita N. Miller, Glenn W. Patterson, and Jerry D. Cohen. "A Rapid and Simple Procedure for Purification of Indole-3-Acetic Acid Prior to GC-SIM-MS Analysis." Plant Physiology 86, no. 3 (1988): 822–25. http://dx.doi.org/10.1104/pp.86.3.822.

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Wang, Kuofei, Yangbo Xiao, Nianci Xie, et al. "Effect of Leaf Grade on Taste and Aroma of Shaken Hunan Black Tea." Foods 13, no. 1 (2023): 42. http://dx.doi.org/10.3390/foods13010042.

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Shaken Hunan black tea is an innovative Hunan black tea processed by adding shaking to the traditional Hunan black tea. The quality of shaken black tea is influenced by leaf grades of different maturity. In this study, the taste and aroma quality of shaken Hunan black tea processed with different grades were analyzed by sensory evaluation (SP, HPLC, and HS-SPME/GC-MS). The results showed that shaken Hunan black tea processed with one bud and two leaves has the best quality, which has a sweet, mellow, and slightly floral taste, as well as a floral, honey, and sweet aroma. Moreover, caffeine and

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Vieira, Ivo J. C., Walter L. B. Medeiros, Cecilia S. Monnerat, et al. "Two fast screening methods (GC-MS and TLC-ChEI assay) for rapid evaluation of potential anticholinesterasic indole alkaloids in complex mixtures." Anais da Academia Brasileira de Ciências 80, no. 3 (2008): 419–26. http://dx.doi.org/10.1590/s0001-37652008000300003.

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The pharmacotherapyfor Alzheimer's disease (AD) includes the use of acetylcholinesterase inhibitors (AChEI). Recent investigations for novel AD therapeutic agents from plants suggested that Tabernaemontana genus is a promising source of novel anticholinesterasic indole alkaloids. In this work two fast screening techniques were combined in order to easily identify novel cholinesterase inhibitors (ChEI). Gas chromatography-mass spectrometry (GC-MS) of the less polar alkaloidic fractions obtained from the acid-base extraction of the stalk of T. laeta revealed thirteen monoindole alkaloids, four o

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Jakubska-Busse, Anna, Izabela Jasicka-Misiak, Anna Poliwoda, Emilia Święczkowska, and Paweł Kafarski. "The chemical composition of the floral extract of Epipogium aphyllum sw. (Orchidaceae): A clue for their pollination biology." Archives of Biological Sciences 66, no. 3 (2014): 989–98. http://dx.doi.org/10.2298/abs1403989b.

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Epipogium aphyllum is a rare European obligate mycoheterotrophic orchid lacking chlorophyll. It has not been studied previously with respect to pollination biology. We studied the association between the composition of floral scent emission and its pollination systems. Field observation indicates that the main pollinators of Epipogium aphyllum are representatives of the genus Bombus (Hymenoptera), B. lucorum, B. hortorum, B. terrestris, B. pascuorum and B. proteus, and the genus Apis (Hymenoptera) namely A. mellifera. The main potential vector (observed to accidentally carry pollen), is most l

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Sam MOKHTARZADEH. "PHYTOCHEMICAL PROFILING of VOLATILE COMPONENTS of Echinacea purpurea (L.) MOENCH MULTIPLIED by MICROPROPAGATION TECHNIQUE." Latin American Applied Research - An international journal 54, no. 2 (2024): 189–94. http://dx.doi.org/10.52292/j.laar.2024.3137.

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Echinacea purpurea (L.) Moench is a substantial herbaceous perennial species of ornamental and medicinal flowering plant that grows to 120 cm in maturity from the Asteraceae family and the Echinacea genus. The development of in vitro protocols for this plant can have a significant impact on the global deployment of this beneficial germplasm. It will also facilitate the rapid multiplication, biotransformation, and genetic transformation of improved phytochemical production, particularly secondary metabolites. All stages of E. purpurea micropropagation in vitro and acclimatization to in vivo con

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Ma, Qing Zhi, Feng Juan Wu, Dang Quan Zhang, and Wan Xi Peng. "Analysis on Function Components and Biohealth Function of Black Bamboo Biomass." Key Engineering Materials 467-469 (February 2011): 1727–30. http://dx.doi.org/10.4028/www.scientific.net/kem.467-469.1727.

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Black bamboo is becoming a major biomass in rooms. Therefore, the chemical components from black bamboo were identified by TD-GC/MS. The main function components of black bamboo biomass at 40°С were acetic acid(24.71%), 1,1,1,5,7,7,7-heptamethyl-3,3-bis(trimethylsiloxy)tetrasiloxane(17.58%), 1h-indole-2-carboxylic acid,6-(4-ethoxyphenyl)-3-methyl-4-oxo-4,5,6,7-tetrahydro-, isopropyl ester(16.85%), cyclooctasiloxane, hexadecamethyl-(15.28%), cyclotrisiloxane, hexamethyl-(4%), etc. And the main function components at 50°С were acetic acid(40.39%), 1,1,1,5,7,7,7-heptamethyl-3,3-bis(trimethylsilox

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Virk, Verinder, and Rishita Srivastava. "Exploring the antibacterial potential and bioactive compounds of Bacillus flexus." INTERNATIONAL JOURNAL OF PLANT SCIENCES 19, no. 2 (2024): 94–101. https://doi.org/10.15740/has/ijps/19.2/94-101.

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The rhizosphere, a soil region influenced by plant root exudates, is a hotspot for diverse microbial communities that play crucial roles in plant health. This study investigated the bacterial isolates from the rhizosphere of potato plants in Khankhal Haridwar, Uttarakhand, India, aiming to evaluate their antibacterial activity and identify bioactive compounds via Gas Chromatography-Mass Spectrometry (GC-MS). Six bacterial isolates (RB1-RB6) were assessed for their activity against Staphylococcus aureus and Escherichiacoli using the agar well diffusion method. Among these, Bacillus flexus RB4 e

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Djibril, Diedhiou, Faye Mamadou, Candy Laure, et al. "Chemical Composition of the Essential Oil of Neem (Azadirachta indica A. Juss. ) Seeds Harvested in Senegal." Indian Journal of Science and Technology 16, no. 2 (2023): 118–22. https://doi.org/10.17485/IJST/v16i2.1650.

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ABSTRACT <strong>Objective:</strong> To make better understanding of the neem seed composition (Azadirachta indica A. Juss.) particularly in Senegal by the extraction, the proportioning and the determination of the composition of its essential oil. <strong>Methods:</strong> The extraction of essential oil from neem seeds is carried out by hydro-distillation. The Gas Chromatography (GC) and Mass Spectrometry (MS) were used for analysis and identification of components. <strong>Findings:</strong> The yield of essential oil from dry neem seeds (95.7% dry matter) is 0.076%

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Wang, Jie, Xiaohan Li, Ying Wu, et al. "HS−SPME/GC−MS Reveals the Season Effects on Volatile Compounds of Green Tea in High−Latitude Region." Foods 11, no. 19 (2022): 3016. http://dx.doi.org/10.3390/foods11193016.

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This study investigates the volatile compounds of green tea produced with different leaves from spring, summer, and autumn in high−latitude region. A total of 95 volatile compounds were identified by gas chromatography–mass spectrometry (GC–MS). Spring, summer and autumn green tea contained 68, 72 and 82 volatile compounds, respectively. Principal component analysis (PCA), partial least squares−discrimination analysis (PLS−DA), and hierarchical cluster analysis (HCA) classified the samples and showed the difference. And 32 key characteristic components were screened out based on variable impor

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O., Olajuyigbe Olufunmiso, Ijeyan Faith O, and Adeoye-Isijola Morenike O. "GC-MS analysis and antimicrobial effects of methanol stem bark extract of Trilepisium madagascriense DC." International Journal of Sciences Volume 6, no. 2017-08 (2017): 34–45. https://doi.org/10.5281/zenodo.3350048.

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The therapeutic potentials of methanol stem bark extract of Trilepisium madagascriense was determined using Gas Chromatography-Mass Spectrometry to identify its bioactive compounds of pharmaceutical importance while the antimicrobial activities were assayed in vitro by agar well diffusion and macrobroth dilution techniques against different microbial isolates. The mass spectra of the identified compounds in the extract at different retention time showed the presence of ethyl iso-allocholate, (3β,5Z,7E)-9,10-Secocholesta-5,7,10(10)-triene-3,24,25-triol, 2,6-Dimethoxyamphetamine, 4-Hexenoic acid

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Bertóti, Böszörményi, Alberti, et al. "Variability of Bioactive Glucosinolates, Isothiocyanates and Enzyme Patterns in Horseradish Hairy Root Cultures Initiated from Different Organs." Molecules 24, no. 15 (2019): 2828. http://dx.doi.org/10.3390/molecules24152828.

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Horseradish hairy root cultures are suitable plant tissue organs to study the glucosinolate–myrosinase–isothiocyanate system and also to produce the biologically active isothiocyanates and horseradish peroxidase, widely used in molecular biology. Fifty hairy root clones were isolated after Agrobacterium rhizogenes infection of surface sterilized Armoracia rusticana petioles and leaf blades, from which 21 were viable after antibiotic treatment. Biomass properties (e.g. dry weight %, daily growth index), glucosinolate content (analyzed by liquid chromatography-electronspray ionization-mass spect

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Abatsieva, Madina P., Igor G. Bakulin, Stanislav I. Sitkin, Timur Ya Vakhitov, and Elena V. Demyanova. "Blood serum metabolomic assessment — a perspective diagnostic method for non-alcoholic fatty liver disease in men." HERALD of North-Western State Medical University named after I.I. Mechnikov 10, no. 4 (2019): 5–14. http://dx.doi.org/10.17816/mechnikov20181045-14.

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Diagnosis of liver disease in particular non-alcoholic fatty liver disease (NAFLD) is largely determined by methods that are informative, safe, non-invasive, highly sensitive and can be used in all patients without exception. One of these methods is gas chromatography-mass spectrometry (GC-MS). Our study presents the results of serum metabolome assessment by the GC-MS method in male patients for the diagnosis of NAFLD at the stage of non-alcoholic steatohepatitis. In serum samples obtained from 25 patients, 319 compounds were identified, among them 109 were annotated. In patients with NAFLD, t

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Marsiglia, Riccardo, Chiara Marangelo, Pamela Vernocchi, et al. "Gut Microbiota Ecological and Functional Modulation in Post-Stroke Recovery Patients: An Italian Study." Microorganisms 12, no. 1 (2023): 37. http://dx.doi.org/10.3390/microorganisms12010037.

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Ischemic stroke (IS) can be caused by perturbations of the gut–brain axis. An imbalance in the gut microbiota (GM), or dysbiosis, may be linked to several IS risk factors and can influence the brain through the production of different metabolites, such as short-chain fatty acids (SCFAs), indole and derivatives. This study examines ecological changes in the GM and its metabolic activities after stroke. Fecal samples of 10 IS patients were compared to 21 healthy controls (CTRLs). GM ecological profiles were generated via 16S rRNA taxonomy as functional profiles using metabolomics analysis perfor

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Tomiyama, Kenichi, Hirokazu Aoki, Takeshi Oikawa, Kazutoshi Sakurai, Yoko Kasahara, and Yukihiro Kawakami. "Characteristic Volatile Components of Kabosu (Citrus sphaerocarpa Hort. ex Tanaka)." Natural Product Communications 6, no. 3 (2011): 1934578X1100600. http://dx.doi.org/10.1177/1934578x1100600319.

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The volatile components of both peel and juice of Japanese citrus, Kabosu ( Citrus sphaerocarpa Hort. ex Tanaka) were investigated using SAFE (Solvent Assisted Flavor Evaporation) technique after solvent extraction. In this study, wine lactone, rose oxide, (2 E)-4,5-epoxy-2-decenal, mintsulfide, and indole were newly identified from Kabosu. AEDA (Aroma Extract Dilution Analysis) of the oxygenated fraction of the peel extract showed high FD (Flavor Dilution) factors for linalool, (2 E)-4,5-epoxy-2-decenal, octanal, (4 Z)-decenal, β-citronellol, geraniol, and wine lactone, while wine lactone, li

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Swapna, Gadala, and Amrutha V. Audipudi. "Physiological and Biochemical Attributes of an Endophyte Stenotrophomonas maltophila, AVSW 1 Isolated from Chilli on PGP of Tomato." Current Agriculture Research Journal 12, no. 2 (2024): 873–89. http://dx.doi.org/10.12944/carj.12.2.30.

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This study aims to understand the role of Stenotrophomonas maltophilia AVSW 1, a chilli root endophytic bacteria, in promoting plant growth and fungal antagonism against Fusarium oxysporum in tomato. Ability of AVSW1 in terms of fungal antagonism, SEM analysis of root colonization, growth optimization and enhancement of the production of Indole-3-aceticacid, Ammonia and siderophore, and phosphate solubilisation followed by in vitro plant growth promotion of tomato using seed bacterization were evaluated. using GC-MS and HPLC analysis of volatile compounds and secondary metabolites of AVSW1was

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Chroston, Eleanor C. M., Annika Hielscher, Matthias Strieker, and Ute Wittstock. "The Impact of Nitrile-Specifier Proteins on Indolic Carbinol and Nitrile Formation in Homogenates of Arabidopsis thaliana." Molecules 27, no. 22 (2022): 8042. http://dx.doi.org/10.3390/molecules27228042.

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Glucosinolates, specialized metabolites of the Brassicales including Brassica crops and Arabidopsis thaliana, have attracted considerable interest as chemical defenses and health-promoting compounds. Their biological activities are mostly due to breakdown products formed upon mixing with co-occurring myrosinases and specifier proteins, which can result in multiple products with differing properties, even from a single glucosinolate. Whereas product profiles of aliphatic glucosinolates have frequently been reported, indole glucosinolate breakdown may result in complex mixtures, the analysis of

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Sergany, M. I. "Efficacy of certain organic extracts at three concentrations on tomato plants infected with the root-knot nematode with reference to GC-MS analysis." Egyptian Journal of Plant Protection Research Institute 7, no. 4 (2025): 448–63. https://doi.org/10.4314/ejppri.v7i4.2.

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A greenhouse experiment was conducted to determine the efficacy of cumin, garlic, and black pepper as organic extracts at three concentrations against root-knot nematode,Meloidogyne arenaria . Garlic extract had the highest potential effects in reducing the number of galls, egg masses, and second- stage juveniles/250 g of soil by 63.97, 65.1, and 58.19%, respectively. Cumin extract was the most effective extract in reducing the number of eggs/g roots (60.91% reduction eggs/g root system). Pepper extract showed higher shoot fresh and dry weights (61.95 and 16.21 g/plant, respectively) without s

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Tang, Hui, Jin-Kui Ma, Lin Chen, et al. "GC-MS Characterization of Volatile Flavor Compounds in Stinky Tofu Brine by Optimization of Headspace Solid-Phase Microextraction Conditions." Molecules 23, no. 12 (2018): 3155. http://dx.doi.org/10.3390/molecules23123155.

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This study optimized the headspace solid phase microextraction (HS-SPME) conditions for the analysis of the volatile flavor compounds of Chinese south stinky tofu brine by gas chromatography-mass spectrometry (GC-MS). The optimum HS-SPME conditions established were as follows: polar column CD-WAX, white 85 μm polyella extractor, extraction temperature 60 °C, equilibrium time 20 min, extraction time 40 min. Under these conditions, a total of 63 volatile flavor compounds in five stinky tofu brines were identified. The offensive odor of the stinky tofu may be derived from some of the volatile fla

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Tawfik, Azza A., Susan L. Cuppett, and Paul E. Read. "MONOTERPENOID CONSTITUENTS OF ROSEMARY SHOOT TIPS CULTURED IN VITRO." HortScience 27, no. 6 (1992): 695c—695. http://dx.doi.org/10.21273/hortsci.27.6.695c.

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Shoot tips (7 to 10 mm long) of rosemary plant (Rosmarinus officinalis L. 'Lockwood de forest') were cultured on Murashige and Skoog (MS) medium supplemented with different concentrations of thidiazuron (TDZ) (0, 0.5, 1.0, 1.5, and 2 mg/l) alone or with 3-indole acetic acid (IAA) at 0.5 mg/l. The effect of TDZ and IAA on the proliferation of rosemary shoot tips has been reported in a previous meeting. Here, we report on the effect of TDZ and IAA on the monoterpene constituents identified in the oil of rosemary plants propagated in vitro. The proliferated explants were soaked in hexane as a sol

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Gotti, Roberto, Alberto Leoni, and Jessica Fiori. "Evaluation of Roasting Effect on Selected Green Tea Volatile Flavor Compound and Pyrazine Content by HS-SPME GC-MS." Applied Sciences 11, no. 17 (2021): 8217. http://dx.doi.org/10.3390/app11178217.

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The present study aims at the development and validation of a quali-quantitative headspace solid-phase microextraction gas chromatography–mass spectrometry (HS-SPME GC-MS) method for the analysis of odorants in different Chinese and Japanese green teas. A 65 µm PDMS/DVB fiber was used, and GC-MS was performed on a ZB-5 (30 m × 0.25 mm ID, 0.25 μm film) column. The main odorants in green tea samples were identified and the method was fully validated. Linearity (r2 0.981–0.999), sensitivity (LOQ 0.005–0.04 µg/mL), reproducibility (CV% 3.12–10.37), accuracy (recovery% 79.08–99.17) and matrix effe

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de Vasconcelos, Franciléia M., Eloisa Helena A. Andrade, Luiz Otávio A. Teixeira, Pablo Luis B. Figueiredo, and José Guilherme S. Maia. "Volatile Constituents from Catasetum (Orchidaceae) Species with Occurrence in the Brazilian Amazon." Plants 12, no. 4 (2023): 703. http://dx.doi.org/10.3390/plants12040703.

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Background: Catasetum Rich. ex Kunth is a genus of Neotropical orchids distributed in Central and South American regions. In the Brazilian Amazon, there are more than 60 species of Catasetum. The floral aromas of orchids are little known, particularly of Catasetum species. This work aimed to analyze the chemical constituents of the volatile concentrates of eight Catasetum specimens from the Amazon: C. alatum (1), C. albovirens (2), C. barbatum (1), C. ciliatum (2), C. galeritum (1), and C. gnomus (1). Methods: Gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) analyzed an

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Yang, Xufei, Yaowapa Lorjaroenphon, Hong Li, Keith R. Cadwallader, Xinlei Wang, and Yuanhui Zhang. "Quantification of Odorants in Animal Feeds at Commercial Swine and Poultry Operations." Transactions of the ASABE 61, no. 2 (2018): 693–98. http://dx.doi.org/10.13031/trans.12611.

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Abstract. Odorants in animal feeds may come from various processes, such as fermentation and decay of feed ingredients, contamination by fecal materials, and sorption of volatiles in the air of animal houses. Those odorants may affect feed flavor and may serve as indicators of feed quality. The objective of this study was to examine the composition and concentration of odorants in animal feeds and to explore the variability of those odorants with animal operation type and season. Thirty-seven feed samples were collected from 14 swine and poultry operations in the U.S. Midwest and were submitte

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Monogan, Ana Zoe, Joshua L. Smith, and Paola A. Prada-Tiedemann. "The Impact of Entomological Sample Handling Techniques on a Single Larva Odor Profile." Forensic Sciences 5, no. 2 (2025): 21. https://doi.org/10.3390/forensicsci5020021.

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Background: Chemical odor profiling within forensic entomology is an emerging tool given its potential for species identification and larval aging and its ability to identify decomposition stages. A volatile analysis of larval masses across species of distinctive developmental stages was carried out with extraction techniques to identify odor signatures. However, it is unknown how larval sample handling (i.e., live samples in research vs. hot-water-killed samples in casework) affects odor signatures or the possibility of obtaining relevant volatiles from a single larva. Method: This study util

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Jing, Li, and Wang Chengji. "GC/MS-based metabolomics strategy to analyze the effect of exercise intervention in diabetic rats." Endocrine Connections 8, no. 6 (2019): 654–60. http://dx.doi.org/10.1530/ec-19-0012.

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Metabolomics was used to explore the effect of exercise intervention on type 2 diabetes. The rat model of type 2 diabetes was induced by an injection of streptozocin (30 mg/kg), after fed with 8-week high-fat diet. The rats were divided into three groups: the control group, the diabetic model group (DM) and the diabetes + exercise group (DME). After exercise for 10 weeks, blood samples were collected to test biomedical indexes, and 24-h urine samples were collected for the metabolomics experiment. In the DME group, fasting blood glucose (FBG), both total cholesterol (TC) and total plasma trigl

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