Article
Chemistry, Analytical
Emad Mohamed Hussien, Maha Hegazy, Laila Abdel Fattah, Hisham Ezzat Abdellatef, Mai Abd El-Aziz, Heba Mohamed El-Sayed
Summary: In this study, novel screen-printed electrodes were developed for quantifying the amount of nicorandil in pharmaceutical formulations. The optimal potentiometric response was achieved by using nicorandil-phosphotungstate ion associate and tricresyl phosphate as a plasticizer. The developed method showed high selectivity, accuracy, and precision for the assay of nicorandil.
Article
Electrochemistry
Omer Isildak, Ilyas Yildiz
Summary: A new all-solid-state PVC membrane nitrate electrode was developed and used for potentiometric analysis of nitrate ions. The electrode utilized silver (I) bisdiethyldithiocarbamate ((C2H5)2NCS2)2Ag+) (Ag(dtc)2) compound as the electroactive positive charged carrier (ionophore) in a plasticized PVC membrane structure. The nitrate-ISE exhibited linear potentiometric behavior in the concentration range of nitrate ions with a detection limit of 6.71 x 10-6 mol L-1. It was successfully applied for the determination of nitrate ions in different water samples and fruit juices, although its pH working range is limited to 4 - 9.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Refaat F. Aglan, Hazem H. Mahmoud, Ahmed M. Rashad, Hosam M. Saleh
Summary: The study introduces a novel covered platinum wire ion-selective electrode sensor relying on Schiff base N-salicylidene-o-aminophenol as an ionophore for rapid monitoring of Mn(II) in various real samples. With low response time, high stability, and good selectivity, this sensor is suitable for evaluating and detecting Mn(II) ions in diverse samples.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Tingting Han, Andrey Kalinichev, Zekra Mousavi, Konstantin N. Mikhelson, Johan Bobacka
Summary: This work characterized the potentiometric response of solid-contact ion-selective electrodes with thin-layer ion-selective membranes. The anomalous increase in potential at low concentrations of the primary potassium ion was found to be influenced by the solid-contact material, thickness of the membrane, and timescale of the measurement. It was concluded that the anomalous response is a characteristic feature of these electrodes and can be used as a diagnostic tool.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Miao Liu, Mingxuan Jia, Yifeng E, Donghui Li
Summary: A novel potential sensor based on electrochemical co-reduction of graphene oxide was developed for detecting sarafloxacin hydrochloride by potential response value. The improved electrode showed wider linear range, lower limit of detection, and shorter equilibration time, while exhibiting good performance in the detection of actual samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Zahra Barati, Mahboubeh Masrournia, Zarrin Es'haghi, Moslem Jahani, Javad Ebrahimi
Summary: In this study, a novel carbon-paste electrochemical sensor was prepared for the detection of chromium (III). The sensor showed good selectivity and a low detection limit, while offering the advantages of simplicity, speed, and low cost.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Mona S. Elshahed, Safaa S. Toubar, Azza A. Ashour, Rasha Th. El-Eryan
Summary: A new highly sensitive potentiometric sensor was developed for the determination of Prucalopride succinate, exhibiting good selectivity and thermal stability. The sensor showed a Nernstian slope over a wide linear range and was proven to be eco-friendly in its application for drug analysis.
Article
Biochemical Research Methods
Ahmed H. Nadim, May A. Abd El-Aal, Medhat A. Al-Ghobashy, Yasser S. El-Saharty
Summary: A molecularly imprinted polymer (MIP)-based potentiometric sensor was developed for label-free determination of recombinant human erythropoietin (rhEPO) in the current study. The sensor demonstrated specificity for rhEPO and could be used for the determination of rhEPO in various biopharmaceutical formulations.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Rajni Kumari, Harish Kumar, Rahul Sharma, Gaman Kumar, Aarti Tundwal, Ankit Dhayal, Abhiruchi Yadav, Aarti Khatkar
Summary: Monitoring synthetic dyes in food is important for protecting human health. In this study, mixed metal nanocomposites were synthesized using a modified Sol-gel process and used to fabricate a working electrode for voltammetric detection of Tartrazine dye. The results showed that the modified electrode exhibited good sensitivity and stability for sensing Tartrazine dye.
MICROCHEMICAL JOURNAL
(2024)
Article
Electrochemistry
Sudipta Choudhury, Soumyendu Roy, Gourav Bhattacharya, Sam Fishlock, Sujit Deshmukh, Sangita Bhowmick, James McLaughlign, Susanta Sinha Roy
Summary: Disposable devices for sensing biomarkers like Na+ ion in sweat were developed using UV-Ozone treated laser-induced graphene electrodes, which showed better performance compared to pristine LIG and screen-printed carbon electrodes.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Rabab M. Soliman, Yasmin Rostom, Amr M. Mahmoud, Yasmin M. Fayez, Nadia M. Mostafa, Hany H. Monir
Summary: This study developed and validated a novel potentiometric sensing method for selective monitoring of carbinoxamine maleate (CRX) in the presence of co-formulated drugs. It discussed the opportunities and challenges offered by two types of ion-selective electrodes (ISEs) assemblies and configurations, with a focus on the advantages of solid-contact ISEs over conventional ones. The solid-contact ISEs incorporated supramolecular elements and carbon nanotubes in a nanocomposite membrane, and was easily fabricated using a one-step drop casting method. The method was successfully applied for quantitation of CRX, and its performance was assessed according to IUPAC recommendations. It also underwent a comprehensive evaluation of its greenness using various green metrics and the RGB12 model.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Ahmed S. Fayed, Nada S. Ayish, Badr A. El-Zeany, Hoda M. Marzouk
Summary: A novel sensor for monitoring drug dissolution patterns was developed, with high sensitivity and fast response time. The sensor was successfully applied for determining FAM in its pure form and Fampyra tablets without any sample pretreatments. Furthermore, real-time in-line monitoring of Fampyra tablets' dissolution profile using US FDA dissolution parameters was achieved.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Amrutha Balliamada Monnappa, Jamballi Gangadharappa Gowda Manjunatha, Aarti Sripathi Bhatt
Summary: The sensor fabricated with the SDSMCCPE method offers a simple fabrication procedure, quick response, admirable stability, reproducibility, and antifouling effects, making it a promising methodology for the concurrent determination of FSBF, tartrazine, and indigo carmine.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Electrochemistry
May H. Abdelwahab, Maha A. Hegazy, Hassan A. M. Hendawy, Soheir A. Weshahy, Samah S. Abbas
Summary: The study compared the nano-voltammetric method and ion selective potentiometric method for analyzing Deflazacort, showing both methods are capable of sensitive determination of DZC in pure form, pharmaceutical formulation and biological fluids with minimal side effects and more effective uses.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Sherif A. Abdel-Gawad, Hany H. Arab
Summary: The application of ion-selective electrodes in the detection and determination of environmental pollutants is crucial. By using membrane electrodes and adjusting assay settings, bromazepam can be accurately measured in real wastewater samples without tedious pretreatment procedures.
Article
Chemistry, Analytical
Hazem M. Abu Shawish, Salman M. Saadeh, Hassan Tamos, Khalid I. Abed-Almonem, Osama Al Khalili
ANALYTICAL METHODS
(2015)
Article
Materials Science, Biomaterials
Hazem M. Abu Shawish, Hassan Tamous, Salman M. Saadeh, Khalid I. Abed-Almonem, Osama Al Khalili
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2015)
Article
Chemistry, Physical
Khalid I. Abed Almonem, Hazem M. Abu Shawish, Abdalla M. Khedr, Salman M. Saadeh, M. Gaber
JOURNAL OF MOLECULAR LIQUIDS
(2016)
Article
Engineering, Multidisciplinary
Hazem M. Abu Shawish, Khaled I. Abed Almonem, Salman M. Saadeh, Wael S. Al-Iham
Article
Chemistry, Analytical
Hazem M. Abu Shawish, Mahmoud Elhabiby, Hadeel S. Abu Aziz, Salman M. Saadeh, Ahmad Tbaza
SENSORS AND ACTUATORS B-CHEMICAL
(2016)
Article
Chemistry, Multidisciplinary
Nasser Abu Ghalwa, Mazen Hamada, Hazem M. Abu Shawish, Omar Shubair
ARABIAN JOURNAL OF CHEMISTRY
(2016)
Article
Biochemical Research Methods
Hazem M. Abu-Shawish, Ayoub A. Dalou, Nasser Abu Ghalwa, Ghada I. Khraish, Jehad Hammad, Abdel-Hakem Basheer
DRUG TESTING AND ANALYSIS
(2013)
Article
Chemistry, Applied
Abdalla M. Khedr, Hazem M. Abu Shawish, M. Gaber, Khalid I. Abed Almonem
JOURNAL OF SURFACTANTS AND DETERGENTS
(2014)
Article
Chemistry, Analytical
Hazem M. Abu-Shawish, Salman M. Saadeh, Hany M. Dalloul, Bassam Najri, Hassan Al Athamna
SENSORS AND ACTUATORS B-CHEMICAL
(2013)
Article
Chemistry, Multidisciplinary
Nasser Abu Ghalwa, Hazem M. Abu-Shawish, Farid R. Zaggout, Salman M. Saadeh, Ayoub R. Al-Dalou, Anwar A. Abou Assi
ARABIAN JOURNAL OF CHEMISTRY
(2014)
Article
Chemistry, Analytical
Hazem M. Abu Shawish, Nasser Abu Ghalwa, Iyad D. Al-Kashef, Salman M. Saadeh, Khalid I. Abed Almonem
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Analytical
Nasser Abu Ghalwa, Khalid I. Abed Almonem, Iyad D. Al-Kashef, Salman M. Saadeh, Hazem M. Abu Shawish
ANALYTICAL METHODS
(2020)
Article
Chemistry, Multidisciplinary
Zeyad J. Yasseen, Salman M. Saadeh, Hazem M. Abu Shawish
ACTA CHIMICA SLOVENICA
(2018)
Article
Chemistry, Multidisciplinary
Hazem M. Abu Shawish, Hassan Tamous, Salman M. Saadeh, Ahmad Tbaza
ACTA CHIMICA SLOVENICA
(2018)
Article
Chemistry, Applied
M. Graca Dias, Elsa Vasco, Francisco Ravasco, Lufsa Oliveira
Summary: This study estimated the vitamin D intake of "adults" and "elderly" populations in Portugal using the TDS methodology. The results showed that the majority of people had inadequate vitamin D intake, well below the Dietary Reference Values.
Article
Chemistry, Applied
Yanan Wang, Jiachen Shi, Yong-Jiang Xu, Chin-Ping Tan, Yuanfa Liu
Summary: This study investigates the variations in lipid digestion profiles among individuals of different ages using in vitro digestion models. The findings suggest that adults have a more comprehensive lipid digestion compared to infants, and infants tend to release shorter chain length and more saturated free fatty acids during digestion. Additionally, the particle sizes in the stomach of the elderly were consistently larger. This study enhances our understanding of how lipids with different degrees of unsaturation undergo digestion in diverse age groups.
Article
Chemistry, Applied
Hyunjong Yu, Huisu Kim, Pahn-Shick Chang
Summary: Chitosan-pectin emulsion-filled hydrogel (EFH) was developed to enhance the bioaccessibility of lipophilic bioactive compounds through intestinal delivery. The EFH, prepared without crosslinking agents, demonstrated improved mechanical strength and compactness with higher pectin concentration. It retained the emulsion at pH 2.0 and released it at pH 7.4, resulting in enhanced release of free fatty acids and improved bioaccessibility of curcumin.
Article
Chemistry, Applied
Tongze Zhang, Siqi Hong, Jia-Rong Zhang, Pin-He Liu, Siyi Li, Zixian Wen, Jianwei Xiao, Guirong Zhang, Olivier Habimana, Nagendra P. Shah, Zhongquan Sui, Harold Corke
Summary: Lactic acid fermentation significantly affects the morphology and physicochemical properties of proso millet starch, including the formation of surface indentations and small pores, decrease in gelatinization temperatures, and changes in hardness and adhesiveness.
Article
Chemistry, Applied
Liqin Kong, Feng Hong, Peng Luan, Yiping Chen, Yaoze Feng, Ming Zhu
Summary: This study presents a novel impedance biosensor using composite nanomaterials and T1R1 as a signal probe, which can competitively and ultra-sensitively detect umami intensity. The biosensor exhibits exceptional analytical performance and is suitable for food flavor evaluation.
Article
Chemistry, Applied
Kunying Lv, Yixin Yang, Qilong Li, Ran Chen, Liang Deng, Yiwei Zhang, Ning Jiang
Summary: Horse's milk, with its high nutritional value and low allergenic proteins, could be a substitute for cow's milk in infant consumption. A proteomic method was used to identify and compare milk fat globule membrane (MFGM) and whey proteins from different horse breeds. The study found differences in protein composition and functionality, which could support the development of formulas more suitable for human infants.
Article
Chemistry, Applied
Enrique Jacobo Diaz-Montana, Helene Brignot, Ramon Aparicio-Ruiz, Thierry Thomas- Danguin, Maria Teresa Morales
Summary: Sensory perception of virgin olive oil is influenced by phenols and volatiles, which are affected by the composition of the oil and biological factors. This study investigated the effect of saliva and phenols on the release of volatiles, and found that the presence of phenols decreased the release of saturated volatiles.
Article
Chemistry, Applied
Wei Zhou, Rui Zhang, Zhen Cai, Fangfang Wu, Yong Hu, Chao Huang, Kun Hu, Yun Chen
Summary: Environmentally friendly and outstanding pH-responsive cationic starch nanoparticles (CSNP) were prepared from pH-sensitive starch. CSNP exhibited nanosize and regular sphere, highly free-flowing molecular chains, and demonstrated excellent pH responsiveness through multiple emulsion/demulsification transitions.
Article
Chemistry, Applied
Andrea Koo, Vinayak Ghate, Weibiao Zhou
Summary: This study suggests that direct seeding may negatively affect the nutritional quality of crops, causing a decrease in ascorbic acid, vitamin K, and total glucosinolate content.
Article
Chemistry, Applied
Tonghao Du, Yazhou Xu, Xiaoyan Xu, Shijin Xiong, Linli Zhang, Biao Dong, Jinqing Huang, Tao Huang, Muyan Xiao, Tao Xiong, Mingyong Xie
Summary: This study successfully improved the ACE inhibitory activity of black sesame seeds by fermenting them with Lactobacillus Plantarum NCU116 and hydrolyzing them using acid protease. The RF-PSO model was used to predict the ACE inhibitory activity during the hydrolysis process. Eight peptides with ACE inhibitory activity were identified from fermented black sesame seed hydrolysates after separation and screening.
Article
Chemistry, Applied
Yao Liu, Songyi Lin, Kexin Liu, Shan Wang, Qiaozhen Liu, Na Sun
Summary: This study analyzed the structural changes of shrimp proteins during digestion, predicted the immunodominant epitopes, and validated their allergenicity. The results showed that shrimp proteins were degraded into peptides during digestion, but still carried IgE epitopes that trigger allergic reactions.
Article
Chemistry, Applied
Tiantian Fu, Hongwei Cao, Yu Zhang, Xiao Guan
Summary: This study investigates the impact of milling on the active components in rice, with a focus on the stability and bioaccessibility of phenols, VB1, and alpha-GABA during cooking and digestion. The findings show that milling exacerbates the instability of gamma-GABA during cooking and VB1 during digestion, and it affects the bioaccessibility of these active compounds.
Article
Chemistry, Applied
Zhihao Yang, Yanru Hou, Min Zhang, Puxin Hou, Chang Liu, Lu Dou, Xiaoyu Chen, Lihua Zhao, Lin Su, Ye Jin
Summary: This study investigated the molecular mechanism of feeding regimes on lamb flavor by using TMT labeling combined with MS. The results showed that pasture-fed groups had higher levels of amino acids and volatile flavor substances compared to concentrate-fed groups. Additionally, several differentially abundant proteins associated with lamb flavor were identified.
Article
Chemistry, Applied
Zixuan Xie, De Zhang, Junyu Zhu, Qianqian Luo, Jun Liu, Jingtao Zhou, Xiaoyong Wang, Yuqiong Chen, Zhi Yu, Dejiang Ni
Summary: This study investigated the acidification of aroma-enhanced black tea during storage. Analysis of non-volatile substances and organic acids using UPLC-Q-TOF/MS and HPLC revealed a decrease in soluble sugars and amino acids, while an increase in organic acids such as oxalic acid, malic acid, and quinic acid. In vitro experiments further demonstrated that the acidification is a result of the decomposition of sugars and amino acids by heating, as well as the oxidation of aromatic aldehydes. Additionally, the study showed that the taste composition of tea infusion is altered, with reduced amino acids, catechins, soluble sugars, and flavonoids. This research provides a theoretical basis for improving the quality of black tea.
Article
Chemistry, Applied
Lin Wang, Falai Ma, Zihan Li, Yan Zhang
Summary: This study developed time-temperature integrators based on amyloglucosidase@Cu3(PO4)2 nanoflowers for monitoring the freshness of chilled pork. The results showed that the integrators were highly reliable and accurate in predicting the quality of chilled pork.