Sample preparation methods for determination of quercetin and quercetin glycosides in diverse matrices

M Hamed, IA Abdallah, A Bedair, FR Mansour - Microchemical Journal, 2023 - Elsevier
Quercetin and its glycosides have gained a lot of interest due to their potential applications
in preventing and treating various diseases. Quercetin is naturally available in free and …

[HTML][HTML] Applications of (natural) deep eutectic solvents in liquid phase microextraction: a review

FR Mansour, A Bedair, M Hamed, G Magdy, I Ali… - Microchemical …, 2024 - Elsevier
Natural deep eutectic solvents (NADES) have gained significant attention as green solvents
due to their unique properties, such as high solubility, low volatility, low toxicity, and …

Exceptional room temperature catalytic transesterification of waste cooking oil to biodiesel using environmentally-benign K2CO3/γ-Al2O3 nano-catalyst

AH Abu-Ghazala, HH Abdelhady, AA Mazhar… - Chemical Engineering …, 2023 - Elsevier
This study addresses the exceptional catalytic efficacy of K 2 CO 3/γ-Al 2 O 3 as a
heterogeneous nano-catalyst for room-temperature biodiesel production from waste cooking …

Microwave prepared nitrogen and sulfur co-doped carbon quantum dots for rapid determination of ascorbic acid through a turn off–on strategy

MAA Hamid, SH Elagamy, A Gamal… - Spectrochimica Acta Part …, 2023 - Elsevier
A simple and eco-friendly microwave method was applied for the preparation of highly
fluorescent nitrogen and sulfur co-doped carbon quantum dots (NS-CQDs) and used for the …

Double protein directed synthesis of chemically etched sulfur doped quantum dots for signal “on–off–on” sensing of glutathione mediated by copper ions

AM Mahmoud, MH Mahnashi, MM El-Wekil - Analytical Methods, 2023 - pubs.rsc.org
In this study, a novel “on–off–on” fluorescent probe was suggested for sensitive and
selective assay of glutathione (GSH). The as-fabricated nanoswitch employs a Cu2+–sulfur …

Analytical methods for the determination of quercetin and quercetin glycosides in pharmaceuticals and biological Samples

FR Mansour, IA Abdallah, A Bedair… - Critical Reviews in …, 2023 - Taylor & Francis
Flavonoids are plant-derived compounds that have several health benefits, including
antioxidative, anti-inflammatory, anti-mutagenic, and anti-carcinogenic effects. Quercetin is a …

Rapid microwave fabrication of highly luminescent nitrogen and phosphorous co-doped carbon quantum dots for the determination of glutathione in pharmaceutical …

AH Kamal, RE Kannouma, MA Hammad… - Microchemical …, 2024 - Elsevier
A facile and sensitive nano-probe for spectrofluorometric glutathione (GSH) determination
has been developed based on dual-doped nitrogen and phosphorus carbon quantum dots …

Rapid and sensitive electrochemical detection of oxidized form of glutathione in whole blood samples using Bi-metallic nanocomposites

S Nagabooshanam, A Kumar, S Ramamoorthy… - Chemosphere, 2024 - Elsevier
We report a facile one-pot synthesis of bimetallic nickel-gold (Ni–Au) nanocomposite for
ultra-sensitive and selective electrochemical detection of oxidized glutathione (GSSG) by …

Exploring the potential of green chemistry in reversed-phase liquid chromatography: A review of sustainable solvents

O Kalisz, M Tobiszewski, A Nowaczyk… - TrAC Trends in Analytical …, 2024 - Elsevier
This article delves into the growing field of green analytical chemistry, focusing on
sustainable solvents for reversed-phase liquid chromatography (RP LC). RP LC is a widely …

Incorporation of eggshell waste in the preparation of carbon quantum dot nanoprobes for the determination of COVID-19 antiviral drug; molnupiravir

RE Kannouma, AH Kamal, MA Hammad… - Microchemical …, 2024 - Elsevier
New carbon quantum dots (CQDs) with multi-doped elements from eggshell biomass waste
have been employed as a direct, fast, green, and selective probe for the fluorometric …