Article
Environmental Sciences
Haobing Shi, Li Fu, Fei Chen, Shichao Zhao, Guosong Lai
Summary: The study introduces an electrochemical sensor for rapid detection of nitrite in water, utilizing biosynthesized gold nanoparticles from pollen extract of Lycoris radiata. The sensor shows linear detection of nitrite with excellent immunity to interference, and has been successfully applied for detecting nitrite in drinking water.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Shridevi Salagare, Prashanth S. Adarakatti, Yarradoddappa Venkataramanappa, Abdulraheem S. A. Almalki
Summary: The study aimed to develop a low-cost, simple, sensitive, and selective three-electrode electrochemical nitrite sensor. PdO-RGO nanocomposites were successfully synthesized, providing a large surface area for nitrite adsorption and demonstrating good electrode performance.
Review
Chemistry, Analytical
Sulieman Ibraheem Shelash Al-Hawary, Ahmed Omar Bali, Shavan Askar, Holya A. Lafta, Zainab Jawad Kadhim, Bakhodir Kholdorov, Yassine Riadi, Reena Solanki, Qais Ismaeel Kadhem, Yasser Fakri Mustafa
Summary: The stability and affordability of food colorants have gained attention in the food industry. Synthetic food colors are more common and harmful, leading to serious health issues. Different analytical methods have been developed, but conventional detection platforms have limitations. Nanoprobes show promise in improving the performance of electrochemical and optical sensors for food dye detection.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Andrea Marco, Antonio Canals, Emilia Morallon, Miguel Angel Aguirre
Summary: Two analytical methods based on miniaturized electrochemical sensors have been developed and successfully applied for the determination of 6-methyl-2-thiouracil (MTU) concentration in meat samples. The methods showed high accuracy and sustainability.
Article
Chemistry, Physical
Mohammad Javed Ansari, Dmitry Olegovich Bokov, Saade Abdalkareem Jasim, Mohammad Rudiansyah, Wanich Suksatan, Ghulam Yasin, Supat Chupradit, Ayad F. Alkaim, Yasser Fakri Mustafa, Dhuha Imad Tarek
Summary: This article introduces the methods and technological breakthroughs in detecting CFX residues in food and water resources in recent years, with a focus on electrochemical and optical nanoprobes, and discusses their advantages and limitations.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Environmental Sciences
Xiaoyun Li, Xu Yang, Mengyao Cui, Yiliang Liu, Jingting Wang, Lixia Zhang, Guoqiang Zhan
Summary: This study focuses on the design and development of a highly specific and sensitive biofilm sensor for nitrite detection in water. The sensor utilizes the competition of oxygen between nitrite-oxidizing bacteria and cathode oxygen reduction for nitrite detection. The sensor shows a linear response and high selectivity for nitrite, and exhibits stability in long-term detection.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Applied
Ya Zhang, Ying Xu, Ning Li, Xiaofang Liu, Yi Ma, Huibo Luo, Changjun Hou, Danqun Huo
Summary: Here, we developed a new ultra-sensitive electrochemical sensor based on ZIF-67@antimonene (AMNFs) nanocomposites. The adsorption properties of antimonene on heavy metal ions were studied using first-principles density functional theory. The ZIF-67@AMNFs exhibited excellent adsorption capacity for Cu2+, Pb2+ and Hg2+ and the detection limits were 0.01 pM, 0.042 pM and 0.031 pM, respectively. This sensor has been successfully applied to detect Cu2+, Pb2+ and Hg2+ in various food samples.
Article
Chemistry, Physical
Raja Nehru, Chiu-Wen Chen, Cheng-Di Dong
Summary: In this work, a novel synthesis method was developed to obtain a graphitic carbon nitride nanotubes decorated MoS2 composite. The electrochemical sensor based on this composite showed excellent performance for vanillin determination, with wide linear ranges, low detection limit, and high sensitivity. The practical applicability of the sensor was successfully demonstrated in food samples.
Article
Chemistry, Applied
Ramona Georgescu State, Jacobus (Koos) Frederick van Staden, Razvan Nicolae State, Florica Papa
Summary: A novel electrochemical sensor based on the modification of carbon paste electrode with an ionic liquid and AuTiO2/GO composite was developed for rapid and sensitive determination of tartrazine. The method showed good linearity, detection limit, reproducibility, and accuracy in the analysis of tartrazine in various samples.
Article
Chemistry, Analytical
Xiaoming Yuan, Jianyue Chen, Yunhan Ling, Shaoqiu Yu, Shilin Li, Xiuwen Wu, Zhengjun Zhang
Summary: A facile laser processing method was used to prepare an electrode for electrochemical nitrite detection. The electrode exhibited outstanding sensing ability, selectivity, and pH sensitivity.
MICROCHEMICAL JOURNAL
(2022)
Article
Engineering, Environmental
A. T. Ezhil Vilian, Reddicherla Umapathi, Seung-Kyu Hwang, Yun Suk Huh, Young-Kyu Han
Summary: In this study, a reliable and selective electrochemical sensor consisting of Pd-Cu nanospheres supported on molybdenum carbide was prepared for the quick and accurate detection of NO2- in the aquatic environment. The sensor showed a low detection limit and high sensitivity, with a broad linear response range for NO2- detection. Additionally, the fabricated electrode demonstrated good recovery when applied to detecting nitrites in various samples such as sausages, river water, and milk.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Electrochemistry
Yun Li, Xiuli Zhang, Yaoqiang Sun, Zhe Yang, Jing Liu
Summary: The purpose of this study was to develop a non-enzymatic electrochemical sensor based on methyl red and modified carbon paste electrodes (MR/GO/CPE) for measuring nitrite in food samples. The results showed that the MR/GO/CPE demonstrated sensitive, selective, and stable responses to nitrite determination. The proposed nitrite sensor had a sensitivity value of 0.12735 mu A/mu M, a wide linear range, and a low detection limit. The accuracy and applicability of the proposed sensor were verified in meat specimens, showing good recovery values and precision.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Chemistry, Analytical
Ruxandra-Maria Ilie-Mihai, Bianca Cristina Ion, Jacobus (Koos) Frederick van Staden
Summary: The primary benefit of using sulfites as a food additive is their antimicrobial and antioxidant properties, which stop fungi and bacteria from growing in a variety of foods. New sensors based on reduced graphene oxide doped with Pd paste and modified with porphyrins were proposed for the detection of sodium metabisulfite in food and urine samples, with low detection and quantification limits. The sensors can accurately determine sodium metabisulfite concentration in a specific range and were compared to other analytical applications.
Review
Chemistry, Multidisciplinary
Protity Saha, Riva Akter, Syed Shaheen Shah, Wael Mahfoz, Abdul Aziz, A. J. Saleh Ahammad
Summary: Nitrite is a toxic component in the environment that can potentially harm human health, so it is crucial to develop a reliable detection method. Electrochemical approaches have advantages such as low cost and ease of use. This review focuses on the use of gold-based nanomaterials in electrode modification for nitrite detection, discussing the development of nanocomposites and electrochemical sensors in recent years. The study also includes a background on synthesizing different morphologies of gold nanoparticles (AuNPs).
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Food Science & Technology
Masoumeh Ghalkhani, Najmeh Zare, Fatemeh Karimi, Ceren Karaman, Marzieh Alizadeh, Yasser Vasseghian
Summary: This study comprehensively reviews the properties, applications, chemistry, and toxicity of Ponceau dyes as food colorants. It discusses the electrochemical analysis of Ponceau dyes and the various methods used to remove these dyes.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Chemistry, Analytical
Ademar Wong, Anderson M. Santos, Tiago A. Silva, Fernando C. Moraes, Orlando Fatibello-Filho, Maria D. P. T. Sotomayor
Summary: This work presents the development of a screenprinted electrode modified with carbon black and magnetic Fe3O4 nanoparticles coated with molecularly imprinted polymer for sensitive and selective voltammetric determination of ciprofloxacin. The modification of the electrode surface and the use of magnetic preconcentration improved the electrode response. The presence of selective cavities in the molecularly imprinted nanoparticles accounted for the enhancement of the analytical signal. The proposed electrochemical sensor demonstrated good measurement accuracy and selectivity for ciprofloxacin determination in various samples.
Article
Electrochemistry
Yeshy F. Ascencio-Flores, Saira M. Carhuayal-Alvarez, Ulises Quiroz-Aguinaga, Sandy L. Calderon-Zavaleta, Elvis O. Lopez, Miguel Ponce-Vargas, Andy A. Cardenas-Riojas, Angelica M. Baena-Moncada
Summary: An electrochemical sensor based on carbon nanofibers (CNF) modified with silver nanoparticles (AgNP) was developed for simultaneous detection of sunset yellow (SY) and tartrazine (Tz) food dyes. The sensor exhibited excellent selectivity, reproducibility, and stability in the presence of various interferents. The simultaneous detection of SY and Tz was achieved by square wave voltammetry (SWV) and cyclic voltammetry (CV), with nanomolar sensitivity and a wide linear range. The sensor's performance was validated by UV-visible spectrophotometry.
ELECTROCHIMICA ACTA
(2023)
Review
Chemistry, Multidisciplinary
Shakeel Zeb, Javier E. L. Villa, Ademar Wong, Sabir Khan, Sajjad Hussain, Maria D. P. T. Sotomayor
Summary: New analytical techniques and materials such as quantum dots and molecularly imprinted polymers have been proposed as valuable tools for the selective detection of emerging and classical pollutants. These techniques offer simple, rapid, and highly selective analytical methods for the detection of pollutants in aquatic environments, replacing expensive and time-consuming standard methods.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Anthony Vargas-Varela, Andy A. Cardenas-Riojas, Edgar Nagles, John Hurtado
Summary: This report presents a novel electroanalytical application for detecting Allura Red (AR) using a carbon paste electrode (CPE) modified with lanthanide oxide and titanium oxide (La-OX-Ti-OX/CPE). The oxidation standard potential (Eo) of AR was determined using the regression equation E-p(V)=-0.038pH+0.922 obtained from the E (V) vs. pH relation. The modified electrode exhibited a significant increase in the anodic peak current and a higher active surface area compared to unmodified electrodes, leading to a detection limit of 0.09 mu mol/L. Real food samples were successfully analyzed using this new method without the need for pretreatment.
Article
Electrochemistry
Andy A. Cardenas-Riojas, Sandy L. Calderon-Zavaleta, Ulises Quiroz-Aguinaga, Elvis O. Lopez, Miguel Ponce-Vargas, Angelica M. Baena-Moncada
Summary: An electrochemical sensor based on a carbon paste electrode (CPE) with gold nanoparticles (AuNP) anchored in carbon nanofibers (CNF) was developed for the detection of tartrazine (Tz). The sensor exhibited excellent sensibility, selectivity, and stability in the presence of various interferents commonly found in commercial soft drinks. A computational study suggested that noncovalent interactions contributed to the stabilization of the Tz-AuNP assemblies. This sensor offers a promising option for analytical purposes.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Analytical
Poliana da Conceicao, Antonio Gomes dos Santos Neto, Sabir Khan, Auro A. Tanaka, Antonio Euzebio G. Santana, Maria del Pilar Taboada-Sotomayor, Marilia O. F. Goulart, Ana Caroline Ferreira Santos
Summary: A magnetic graphite-epoxy composite (m-GEC) electrochemical sensor based on magnetic imprinted polymer (mag-MIP) was developed to detect homocysteine (Hcy). The mag-MIP was synthesized using functionalized magnetic nanoparticles (Fe3O4), Hcy as the template molecule, and specific monomers. The m-GEC/mag-MIP sensor showed a linear range of 0.1-2 μmol/L and a low limit of detection (LOD) of 0.030 μmol/L. The sensor exhibited selectivity towards Hcy and demonstrated good accuracy in detecting natural and synthetic samples.
Article
Engineering, Multidisciplinary
Eduardo Jara-Cornejo, Sabir Khan, Jaime Vega-Chacon, Ademar Wong, Lariel Chagas da Silva Neres, Gino Picasso, Maria D. P. T. Sotomayor
Summary: This study focuses on developing biomimetic sensors inspired by biological systems for the detection of methotrexate contaminants in environmental samples. Methotrexate is widely used for cancer and autoimmune disease treatment, and its residues in the environment are considered emerging contaminants of great concern. The proposed sensor, constructed using polypyrrole-based molecularly imprinted polymer (MIP) electrodeposited on a glassy carbon electrode modified with multi-walled carbon nanotubes, showed a detection limit of 2.7 x 10(-9) mol L-1 for methotrexate and a linear range of 0.01-125 mu mol L-1. The sensor demonstrated high selectivity with only a 15.4% electrochemical signal decay when interferents were incorporated in the standard solution. Overall, the results suggest that the proposed sensor is highly promising and suitable for quantifying methotrexate in environmental samples.
Article
Chemistry, Physical
Antony Bazan-Aguilar, Gonzalo Garcia, Elena Pastor, Jose Luis Rodriguez, Angelica Maria Baena-Moncada
Summary: Green hydrogen is a valuable energy source for addressing the environmental impact of fossil fuel consumption. Large-scale production of green hydrogen can be achieved using anion exchange membrane water electrolyzer (AEMWE) with highly electroactive and low-cost catalysts for hydrogen evolution reaction (HER). A novel catalyst was developed by an anhydrous etching procedure of commercial and low-cost Ni foam electrodes, which showed promising catalytic performance for HER with an onset potential close to the thermodynamic value. Further investigations using differential electrochemical mass spectrometry (DEMS) and Raman spectroelectrochemistry (Raman-SEC) provided insights into the reaction kinetics and mechanism of the HER at catalysts in alkaline medium.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Polymer Science
Miguel Luna Quinto, Sabir Khan, Jaime Vega-Chacon, Bianca Mortari, Ademar Wong, Maria Del Pilar Taboada Sotomayor, Gino Picasso
Summary: In this study, a novel molecularly imprinted polymer (MIP) technique was proposed for the efficient removal of Brilliant Green dye (BG) from aqueous solutions. The MIP, synthesized using a template approach, exhibited high surface area and selectivity. Experimental results demonstrated the successful removal of the target dye in real river water samples using the MIP.
Article
Chemistry, Analytical
Bianca Mortari, Sabir Khan, Ademar Wong, Maria Del Pilar Taboada Sotomayor
Summary: This study reports the development of a highly selective core@shell-based quantum dot-molecularly imprinted polymer (QD@MIP) sensor for the detection of sulfadiazine. The sensor showed excellent selectivity and sensitivity, and was successfully applied to real animal-based food samples.
Article
Chemistry, Analytical
Ademar Wong, Anderson M. M. Santos, Maria H. A. Feitosa, Orlando Fatibello-Filho, Fernando C. C. Moraes, Maria D. P. T. Sotomayor
Summary: The study developed a flow injection analysis (FIA) system using a cathodically pretreated boron-doped diamond electrode (CPT-BDD) and multiple-pulse amperometry (MPA) for simultaneous determination of uric acid (UA) and caffeine (CAF). The proposed method showed good repeatability and stability, and no interference from various substances was observed. The BDD sensor exhibited superior analytical performance compared to other sensors reported in the literature.
Article
Environmental Sciences
Saira M. Carhuayal-Alvarez, Yeshy F. Ascencio-Flores, Ulises Quiroz-Aguinaga, Sandy L. Calderon-Zavaleta, Golfer Muedas-Taipe, Andy A. Cardenas-Riojas, Miguel Ponce-Vargas, Angeilica M. Baena-Moncada
Summary: A sensor based on graphite decorated with 2-hydroxy-1,4-naphthoquinone was developed for monitoring Cd(II) and Zn(II) concentration in river waters. The sensor exhibited excellent stability, reproducibility, repeatability, and selectivity, making it a promising electrode for Zn(II) and Cd(II) detection in river waters.
Review
Electrochemistry
Andy A. Cardenas-Riojas, Sandy L. Calderon-Zavaleta, Ulises Quiroz-Aguinaga, Golfer Muedas-Taipe, Saira M. Carhuayal-Alvarez, Yeshy F. Ascencio-Flores, Miguel Ponce-Vargas, Angelica M. Baena-Moncada
Summary: This review provides an overview of the characteristics and applications of modified carbonaceous materials in the detection of food azo dyes, as well as a summary of the currently employed electroanalytical detection methods. It also discusses the development and technological advances of novel nanomaterials and their potential environmental and health impacts within the food industry.
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.