Gas Chromatography Columns Using Ionic Liquids as Stationary Phase

Talebi, Mohsen; Patil, Renukadevi; Armstrong, Daniel W.

doi:10.1007/978-3-030-35245-5_6

Cited by 7 publications

(4 citation statements)

References 144 publications

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“…Dihydrofolate reductase inhibition and iron high affinity yielded regarding catechins consumptions have been reported in some studies. Therefore decrease in iron bioavailability from the diet, being born with folic acid deficiency and related disturbances might be expected (Chacko, Thambi, Kuttan, & Nishigaki, 2010;Mak, 2012 (Amarowicz & Shahidi, 1996;Armstrong et al, 2019;Berthod, Berthod, & Armstrong, 2005;Del Rio et al, 2004;Karama c, Kosinska, & Chavan, 2005;Naldi et al, 2014;Patil, Talebi, Berthod, & Armstrong, 2018;Talebi, Patil, & Armstrong, 2020;Zeeb, Nelson, Albert, & Dalluge, 2000).…”

Section: Phytochemical Pharmacological and Toxicological Properties Of Green Tea Catechinsmentioning

confidence: 99%

New insights into the role of the Nrf2 signaling pathway in green tea catechin applications

Talebi

Farkhondeh

et al. 2021

Phytotherapy Research

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Nuclear factor-erythroid 2-related factor 2 (Nrf2) is a transcriptional signaling pathway that plays a crucial role in numerous clinical complications. Pivotal roles of Nrf2 have been proved in cancer, autoimmune diseases, neurodegeneration, cardiovascular diseases, diabetes mellitus, renal injuries, respiratory conditions, gastrointestinal disturbances, and general disorders related to oxidative stress, inflammation, apoptosis, gelatinolysis, autophagy, and fibrogenesis processes. Green tea catechins as a rich source of phenolic compounds can deal with various clinical problems and manifestations. In this review, we attempted to focus on intervention between green tea catechins and Nrf2. Green tea catechins especially epigallocatechin gallate (EGCG) elucidated the protective role of Nrf2 and its downstream molecules in various disorders through Keap-1, HO-1, NQO-1, GPx, GCLc, GCLm, NF-kB cross-link, kinases, and apoptotic proteins. Subsequently, we compiled an updated expansions of the Nrf2 role as a gate to manage and protect different disorders and feasible indications of green tea catechins through this signaling pathway. The present review highlighted recent evidence-based data in silico, in vitro, and in vivo studies on an outline for future clinical trials.cancer, catechins, epigallocatechin gallate (EGCG), green tea, nuclear factor-erythroid 2-related factor 2 (Nrf2) signaling pathway, oxidative stress, therapeutic effects | INTRODUCTIONEvidence-based researches have indicated that existing phytochemicals in various natural agents serve as protectants or therapeutics with the possession of benefits such as high therapeutic index, low cost, and feasible availability (Leitzmann, 2016). Green tea is a well-known and popular beverage that has been used in a great proportion of the universe's population. Catechins are major polyphenols of green tea most commonly used and have responsibility for its therapeutic applications. Efficacy of green tea catechins combat malignancies and numerous neoplasms, cardiovascular diseases and metabolic syndrome, neurodegeneration, autoimmune complications, kidney and urinary tract obstructions, respiratory tract ailments, digestive system dysfunctions, toxicities, microbial diseases, and oxidative damages have been confirmed in recent studies (Mak, 2012;Zaveri, 2006).Besides the effective roles of polyphenols in the alleviation of mortality and morbidity rates have been proved. In some conditions, dysfunctionalities do not prognoses through utilizing conventional drugs and other routes of treatment may be invasive. Therefore, consuming worthful nutraceuticals such as green tea catechins with their

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Section: Phytochemical Pharmacological and Toxicological Properties Of Green Tea Catechinsmentioning

confidence: 99%

New insights into the role of the Nrf2 signaling pathway in green tea catechin applications

Talebi

Farkhondeh

et al. 2021

Phytotherapy Research

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“…Although (vii) derivatization should be avoided, it is still widely used in both gas (to increase volatility and thermal stability) and liquid (to increase detectability) chromatographic method [88]. (viii) The toxicity of derivatization reagents [89] can reduce the safety for the operator, which is normally high in chromatographic analyses without them. (ix) However, replacement and elimination of toxic reagents and methods have been under development and stimulated by increasingly tight legislation.…”

Section: Green Chemistry In Analytical Chroma-tographymentioning

confidence: 99%

Strategy for Sustainable and Green Chromatographic Separation Science: Innovation, Technology and Application

Mohammad

Azmir

Ademario

et al. 2020

CCHG

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: Green separation science involves extraction, pre-concentration and chromatographic analysis aiming at minimizing environmental impact by reducing energy and reagent usage and reducing or eliminating waste generation. However, the enrichment of trace analytes and/or the analysis of complex matrices most frequently require several steps before analysis, such as extraction, pre-concentration, clean up and preparative chromatography. Thus, alternative and greener separation techniques and solvents are replacing classical methods to diminish the carbon footprint and increase sustainability. Moreover, many innovations are also emerging to curtail the environmental impact of samples analysis; such as micro or nano analytical platforms, sensor-based systems and direct injection to high resolution mass spectrometry. The current review provides an updated account of the green and sustainable separation science techniques. The current innovations on greener separations and their application in different fields of study are discussed.

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“…In terms of thermal stability, volatility, and maintainability of physical and chemical properties, dicationic ILs have several benefits over conventional monocationic ILs 40 . They, therefore, offer good potential for application as high-temperature solvents, lubricants, stationary phases for gas chromatography, separation media, and catalysts for transesterification reactions 41 , 42 . When compared to their traditional cationic and anionic surfactant equivalents, it was found that these ILs had improved surface activity.…”

Section: Introductionmentioning

confidence: 99%

Stable diesel microemulsion using diammonium ionic liquids and their effects on fuel properties, particle size characteristics and combustion calculations

El Nagy,

Mohamed

2024

Sci Rep

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Ecofriendly and stable Fuel Microemulsions based on renewable components were prepared through solubilizing ethanol in diesel and waste cooking oil blend (4:1). New diquaternary ammonium ionic liquids (3a & 3b) were synthesized through a quaternization reaction of the synthesized dihaloester with diethyl ethanolamine tridecantrioate and triethyl amine tridecantrioate, respectively. The chemical structures were elucidated by NMR spectroscopy. It was observed from DLS analyses that the ethanol particles in all samples have sizes between 4.77 to 11.22 nm. The distribution becomes narrower with the decrease in the ionic liquid concentrations. The fuel properties fall within the ASTM D975 acceptable specifications and are close to the neat diesel properties. The Cetane index were 53 and 53.5, heating values were 38.5 and 38.5 MJ/kg, viscosities were 2.91 and 2.98 mm2/s, densities were 8.26 and 8.29 g/mL and flash points were 49 °C and 48 °C for 3a1 and 3b1 microemulsions, respectively. The particle sizes of samples were examined by DLS for 160 days and they were significantly stable. The amount of ethanol solubilized increases with the increase in the amount of the synthesized ionic liquids and cosurfactant. The combustion calculations pointed out that the microemulsions 3a1 and 3b1 need 13.07 kg air/kg fuel and 12.79 kg air/kg fuel, respectively, which are less than the air required to combust the pure diesel. According to theoretical combustion, using ionic liquids saves the air consumption required for combustion and reduces the quantities of combustion products. The prepared microemulsions were successfully used as a diesel substitute due to their improved combustion properties than pure diesel and low pollution levels.

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Gas Chromatography Columns Using Ionic Liquids as Stationary Phase

Cited by 7 publications

References 144 publications

New insights into the role of the Nrf2 signaling pathway in green tea catechin applications

New insights into the role of the Nrf2 signaling pathway in green tea catechin applications

Strategy for Sustainable and Green Chromatographic Separation Science: Innovation, Technology and Application

Stable diesel microemulsion using diammonium ionic liquids and their effects on fuel properties, particle size characteristics and combustion calculations

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