Merdy, Patricia Meunier, Jean-Dominique Lucas, Yves
Published in
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
We formally describe a 1- or 2-ligands fluorescence quenching or exhaustion model that takes ionic strength into account. We give ready-to-use formulas, which are easy to implement on a common spreadsheet, to determine complexing capacities and apparent stability constants of fluorescence ligands by adjusting quenching or enhancing experimental cur...
Ashrafzadeh Afshar, Elham Taher, Mohammad Ali Karimi-Maleh, Hassan Karaman, Ceren Joo, Sang-Woo Vasseghian, Yasser
Published in
Environmental pollution (Barking, Essex : 1987)
In this study, a new magnetic nanocomposite was developed as an efficient and fast-response fluorescence quenching sensor for determination of anticancer drug 6-mercaptopurine (6-MP). For this purpose, the needle-shape fluorescence metal-organic framework of cerium (Ce-MOF) were successfully synthesized on the surface of multiwalled carbon nanotube...
Vellaiswamy, Gomathi Ramaswamy, Selvameena
ABSTRACT. Fluorescence study of Cu(II) complex of 4-((2-hydroxynaphthalen-1-ylmethylene)amino)-N-(pyridin-2-yl)benzenesulfonamide by alizarin dye has been probed in DMSO. In the fluorescence quenching the electron transfer occurs from Cu(II) complex to alizarin. The structure of the complex was confirmed by EPR and powder XRD techniques. The Cu(II)...
Wang, Shan Li, Yue Huang, Dejian Chen, Shangwei Xia, Yongmei Zhu, Song
Published in
Food chemistry
Due to the poor lipophilicity of chlorogenic acid (CA), five CA derivatives (C2-CA, C4-CA, C6-CA, C8-CA, and C12-CA) with different lipophilicities were synthesized using acylation catalyzed by lipase in present study. The inhibitory activities and mechanisms of CA and its derivatives on α-amylase and α-glucosidase were then determined. Results sho...
Vidotto, Danilo C Mantovani, Raphaela A Tavares, Guilherme M
Published in
Food chemistry
Dynamic high-pressure homogenization microfluidization (DHPM) is a versatile emerging technology that may be applied to food processing to achieve several goals. DHPM may, depending on nature of the molecules and the working parameters, induce changes in protein structure, which may improve or impair their techno-functional properties and ability t...
Srivastava, Bhavya Sen, Souvik Bhakta, Santanu Sen, Kamalika
Published in
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
One of the consequential and alarming complications of diabetes mellitus is diabetic neuropathy (DN). DN is assured to be caused chiefly by excess sorbitol levels in the body. The harmful consequences of DN alike peripheral nerve damage with extremity ulcers may be dodged with timely detection and treatment. The therapeutic methods for DN are scarc...
Mili, Khawla Hsine, Zouhour Chevalier, Yves Hbaieb, Souhaira Mlika, Rym
X–ZnS quantum dots (QDs) are synthesized in aqueous solution by a simple aqueous chemical route where X represents 3-mercaptopropionic acid (MPA) or 3-mercapto-1-propanesulfonic acid (MPS) which are two well-known low cost and stable ligands. The synthesized X–ZnS QDs yielded aqueous suspensions of nanoparticles with excellent monodispersity, water...
Liu, Shi-Yu Zhang, Yuan-Yuan Chu, Gang-Xiu Bao, Guan-Hu
Published in
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Formation of catechins-human serum albumin (HSA) complex contributes to stably transporting catechins and regulating their bioavailability. Recently, a new class of catechins namely flavoalkaloids have been reported from tea. The unique structural modification with an N-ethyl-2-pyrrolidinone ring at catechins from these flavoalkaloids has raised ou...
Shekarbeygi, Zahra Karami, Changiz Esmaeili, Esmaeil Moradi, Sajad Shahlaei, Mohsen
Published in
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Gemcitabine hydrochloride is an established chemotherapeutic agent in several solid tumors. In spite of outstanding therapeutic efficacy, there are some serious fetal side effects with gemcitabine in higher concentrations which necessitate developing a sensitive sensor for its quantification. Herein, a fluorescent metal-nanoparticles conjugated car...
Saipetch, Kornravee Khanal, Rajendra Yoshimura, Chihiro
Published in
Environmental Monitoring and Assessment
Despite there being numerous models of trihalomethane (THM) formation, they are limited by high estimation errors, which can be close to the regulatory limits for THMs, due to the fluorescence quenching effect. In this research, the estimation error for THM formation was reduced by correcting the quenching effect. The trihalomethane formation poten...