Gotowe bibliografie tematyczne / Resorcinol Gas Chromatography

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Gotowa bibliografia na temat „Resorcinol Gas Chromatography”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Resorcinol Gas Chromatography"

Armstrong, S. M., and T. R. Patel. "Abiotic conversion of dihydrophloroglucinol to resorcinol." Canadian Journal of Microbiology 39, no. 9 (1993): 899–902. http://dx.doi.org/10.1139/m93-135.

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Chemical conversion of a dihydrophloroglucinol preparation (a mixture of the tautomers 1,3,5-trihydroxy-1,3-cyclohexadiene, 1,3-dioxo-5-hydroxycyclohexane, and 3,5-dihydroxy-3-cyclohexene-1-one) to resorcinol occurred during a 24-h extraction of an acidic (pH 2.0) aqueous dihydrophloroglucinol preparation into ethyl acetate. This conversion did not occur at neutral pH, nor did phloroglucinol (1,3,5-trihydroxybenzene)-induced or succinate-induced Penicillium simplicissimum enzyme extracts convert the dihydrophloroglucinol preparation to resorcinol at pH values of 5.5–8.0. The chemical structure

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De, Amit Kumar, Partha Pratim Chowdhury, and Shyama Prasad Chattopadhyay. "Determination of Glycerin from a Marketed Personal Care Product Using Gas Chromatography." Advances in Pharmaceutics 2015 (February 9, 2015): 1–5. http://dx.doi.org/10.1155/2015/567032.

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The current study presents a packed column gas chromatographic technique for the estimation of glycerin using a flame ionization detector from a marketed hair tonic in presence of resorcinol, ethanol, biotin, keratin hydrolysate, undecylenic acid alkylolamide (hyalkyl HBU), D-biotin, nicotinic acid, and polyvinylpyrrolidone. The validation studies show the proposed method to be specific, sensitive, precise, and accurate. The method is found to be linear in the concentration range 1.25 mg/mL to 10.02 mg/mL with r2 value 0.99. The limit of detection and the limit of quantitation were 0.01 mg/mL

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Perdana Sari, Wiwin Kusuma, and Muslimin Muslimin. "IDENTIFIKASI SENYAWA POTENSIAL ANTIOKSIDAN PADA MAKROALGA COKELAT Turbinaria ornata DARI PANTAI GUNUNGKIDUL, YOGYAKARTA." Jurnal Riset Akuakultur 17, no. 3 (2023): 155. http://dx.doi.org/10.15578/jra.17.3.2022.155-167.

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Makroalga cokelat memiliki kandungan senyawa bioaktif yang bermanfaat dalam berbagai bidang kesehatan. Salah satu jenis makroalga cokelat dengan potensi antioksidan adalah Turbinaria ornata. Penelitian ini bertujuan untuk mengidentifikasi kandungan senyawa potensial antioksidannya. Fraksinasi terhadap ekstrak T. ornata dilakukan untuk memfokuskan jenis senyawa potensial antioksidan. Ekstrak dan fraksi dengan potensi antioksidan terbaik dianalisis kandungan senyawanya dengan gas chromatography-mass spectrometry (GC-MS). Pemantauan dengan plat kromatografi lapis tipis (KLT) juga dilakukan terhad

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Singab, Abdel Nasser B., Nada M. Mostafa, Omayma A. Eldahshan, Mohamed L. Ashour, and Michael Wink. "Profile of Volatile Components of Hydrodistilled and Extracted Leaves of Jacaranda acutifolia and their Antimicrobial Activity Against Foodborne Pathogens." Natural Product Communications 9, no. 7 (2014): 1934578X1400900. http://dx.doi.org/10.1177/1934578x1400900731.

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Volatile constituents of the essential oil and n-hexane extract of Jacaranda acutifolia Humb. and Bonpl. (Bignoniaceae) leaves were determined, and their antimicrobial activities were investigated using an agar diffusion method. The minimum inhibitory concentrations (MIC) were determined and compared with those of standard antibiotics (penicillin, gentamicin and nystatin). The chemical composition of the oils was analyzed by capillary gas chromatography (GLC-FID) and gas chromatography–mass spectrometry (GLC-MS). Thirty-four components, comprising almost 93.8% of the total peak area, were iden

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Hofer, Iris, Lydia Gautier, Eglantine Cortes Sauteur, et al. "A Screening Method by Gas Chromatography-Mass Spectrometry for the Quantification of 24 Aerosol Constituents from Heat-Not-Burn Tobacco Products." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 28, no. 7 (2019): 317–28. http://dx.doi.org/10.2478/cttr-2019-0013.

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SummaryA screening method allowing the quantification of 24 aerosol constituents using gas chromatography-mass spectrometry has been developed to assess the aerosol chemistry of heat-not-burn tobacco products.The aim of this method was to quantify phenol, o-cresol, m-cresol, p-cresol, catechol, resorcinol, hydroquinone, 1,3-butadiene, isoprene, benzene, acrylonitrile, toluene, pyridine, styrene, 1,2-propylene glycol, menthol, 2-furanmethanol, acrylamide, naphthalene, nicotine, acetamide, quinoline, triacetin, and glycerine in the aerosol emitted by heated tobacco products. The aerosol was gene

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Rahimalimamaghani, Arash, David Alfredo Pacheco Tanaka, Margot A. Llosa Tanco, Maria Fernanda Neira D’Angelo, and Fausto Gallucci. "Ultra-Selective CMSMs Derived from Resorcinol-Formaldehyde Resin for CO2 Separation." Membranes 12, no. 9 (2022): 847. http://dx.doi.org/10.3390/membranes12090847.

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A resorcinol-formaldehyde precursor was synthesized to fabricate the CO2 selective Carbon Molecular Sieve Membranes (CMSMs) developed in this study. The degree of polymerization (DP) was analyzed via Gel Permeation Chromatography (GPC) and its effect on the CO2/N2 perm-selectivity and CO2 permeance was investigated. The membrane that was polymerized at 80 °C (named R80) was selected as the best performing CMSM after a preliminary test. The post treatment with oxidative atmosphere was performed to increase the CO2 permeance and CO2/N2 perm-selectivity on membrane R80. The gas permeation results

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Özparpucu, Merve, Elisabeth Windeisen-Holzhauser, Gerd Wegener, and Klaus Richter. "A new analytical approach to investigate the influence of wood extracts on the curing properties of phenol-resorcinol–formaldehyde (PRF) adhesives." Wood Science and Technology 56, no. 2 (2022): 349–65. http://dx.doi.org/10.1007/s00226-022-01364-3.

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AbstractIn this study, the interactions between a phenol–formaldehyde resorcinol (PRF) adhesive and water-extractable wood constituents were investigated using combined in-situ FTIR spectroscopy and rheology analysis for a simultaneous examination of the progress of chemical reactions and coherent changes in rheological properties during adhesive curing. Complementary evolved gas analysis and pyrolysis gas chromatography/mass spectroscopy (Py-GC/MS) were performed to detect differences in the final crosslinking and chemical composition of the cured adhesive, respectively. The rheological and c

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Hashida, Koh, Seiji Ohara, and Rei Makino. "Improvement of formaldehyde-scavenging ability of condensed tannins by ammonia treatment." Holzforschung 60, no. 2 (2006): 178–83. http://dx.doi.org/10.1515/hf.2006.029.

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Abstract Condensed tannins have formaldehyde gas-scavenging ability. Tannins consisting of phloroglucinol-type A-rings, such as prodelphinidin and procyanidin, had higher formaldehyde-scavenging ability than those consisting of resorcinol-type A-rings, such as prorobietinidin and profisetinidin. This ability was markedly improved by ammonia treatment. The increase in formaldehyde-scavenging ability was especially notable in the case of condensed tannins with a high ratio of pyrogallol-type B-rings, such as prorobietinidin and prodelphinidin. To clarify the factors affecting improvement of the

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Andika, R., SK Himmi, M. Ismayati, et al. "Chemical components from the bark layers of Eucalyptus pellita F Muell." IOP Conference Series: Earth and Environmental Science 1199, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1755-1315/1199/1/012027.

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Abstract The utilization of E. pellita bark as waste is still not widely carried out due to a lack of information about the chemical content. Therefore, the current study aimed to analyze the chemical content of the bark of E. pellita using pyrolysis-gas chromatography-mass spectrometry (PyGCMS). The results showed the total extractive content of E. pellita’s inner bark, outer bark, and mix-bark was 12.17%, 16.19%, and 14.85%, respectively. The holocellulose content of E. pellita mix-bark was 65.45%, while the inner bark and outer bark were 60.68% and 59.29%, respectively. The alpha-cellulose

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CHE MAN, CHE AMIRA IZZATI, WAN RAZARINAH WAN ABDUL RAZAK, and MOHD FAKHARUL ZAMAN RAJA YAHYA. "ANTIBACTERIAL AND ANTIBIOFILM ACTIVITIES OF Swietenia macrophylla King ETHANOLIC EXTRACT AGAINST FOODBORNE PATHOGENS." Malaysian Applied Biology 51, no. 4 (2022): 45–56. http://dx.doi.org/10.55230/mabjournal.v51i4.10.

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Swietenia macrophylla is known to possess several medicinal uses, however, its antibacterial and antibiofilm activities against foodborne pathogens remain not well investigated. The present work was performed to examine the phytochemical compounds, antibacterial and antibiofilm activities of S. macrophylla ethanolic extract (SMEE) against four foodborne pathogens namely, Salmonella typhimurium ATCC 14028, Escherichia coli ATCC 25922, Shigella sonnei ATCC 33862 and Pseudomonas aeruginosa ATCC 10145. The phytochemical analysis of SMEE was performed using gas chromatography-mass spectrometry whil

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Części książek na temat "Resorcinol Gas Chromatography"

Devi, Selvaraj, Somasundaram Anbu Anjugam Vandarkuzhali, and Vairaperumal Tharmaraj. "Resorcinarene Crowns as Versatile Host Molecules and Their Potential Applications." In Photophysics of Supramolecular Architectures. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815049190122010006.

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<div>Resorcinarene crowns are significant building blocks for supramolecular</div><div>chemistry. Resorcinarenes are part of the calixarenes family and are macrocyclic,</div><div>bowl-shaped molecules. Derived from four resorcinol subunits, they have hydroxy</div><div>groups at the wide rim of the bowl. These cavities were utilized for their potential</div><div>recognition of racemic guests and catalysis applications. In this chapter, we focused on</div><div>the overview of synthesis, conformational properties of resorcinarenes

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