Article
Chemistry, Analytical
Qian He, Chenchen Li, Xiangyu Kong, Minggang Zhao, Jing Zhang
Summary: A novel and sensitive procedure for Cr determination using the chelate-enhanced NFDBD sampling system was developed. The method showed high sensitivity and low detection limit, allowing for accurate determination of Cr in environmental and biological samples.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Biochemistry & Molecular Biology
Shuang-Qing Zhang, Sui-Han Cheng, Shi Shen, Bi-Ying Luo, Yan Zhang
Summary: A new method was developed for quantifying Cr(III) and Cr(VI) in Chromium-enriched yeast, using ion chromatography-inductively coupled plasma mass spectrometry. Cr(III) and Cr(VI) were extracted using ultrasound-assisted weakly alkaline EDTA solution combined with boiling, and separated on two successive anion-exchange columns. The method was sensitive, accurate, and precise, with no Cr(VI) species found in CrY.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2021)
Article
Chemistry, Analytical
Suvi Kulomaki, Elmeri Lahtinen, Siiri Peramaki, Ari Vaisanen
Summary: A simple and sensitive method utilizing 3D printed metal scavenger for preconcentration and speciation of mercury species in water samples has been developed. By studying experimental parameters, MeHg and iHg concentrations in water samples were successfully determined with high analytical accuracy.
Article
Chemistry, Analytical
Juan Jose Lopez-Mayan, Sergio del-Angel-Monroy, Elena Pena-Vazquez, Maria Carmen Barciela-Alonso, Pilar Bermejo-Barrera, Antonio Moreda-Pineiro
Summary: This study developed a method for isolating and determining background levels of titanium dioxide nanoparticles in seaweed, demonstrating good stability and accuracy through validation experiments.
Article
Environmental Sciences
Sezin Erarpat, Cansu Demir, Miray Oner, Sezgin Bakirdere
Summary: A hyphenated instrumental method combining HPLC and ICP-OES was developed for the precise determination of Cr(III) and Cr(VI) in soil, grass, and water samples. The method showed high accuracy and applicability.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Chemistry, Multidisciplinary
Jinshun Cang, Weixi Gu, Yuheng Zhang, Xiashi Zhu
Summary: This study developed a magnetic solid extractant coated with amino acid ionic liquid and graphene oxide for the speciation analysis of Cr(iii) and Cr(vi) in water samples using ICP-OES. The method showed good linear ranges and detection limits under optimal conditions, and its effectiveness was validated through quantitative analysis of environmental water samples. This method reveals promising potential in the field of environmental remediation.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
I. Morales-Benitez, P. Montoro-Leal, J. C. Garcia-Mesa, M. M. Lopez Guerrerp, E. Vereda Alonso
Summary: A novel method for Cr(III) and Cr(VI) speciation in environmental samples was developed using magnetic nanoparticles coupled to graphene oxide. The method combined inductively coupled plasma optical emission spectrometry with on-line magnetic solid phase extraction. The synthesized sorbent material showed good performance with low detection limits and high enrichment factors. The developed method was successfully applied to analyze chromium speciation in environmental water samples, showing good agreement with certified values and high recoveries for spiked samples.
Article
Biochemistry & Molecular Biology
Nombuzo Mabuza, Henok H. Kinfe, Taddese W. Godeto, Abayneh A. Ambushe
Summary: Rooibos tea, grown in South Africa and consumed worldwide, contains higher levels of manganese and zinc. Study shows that drinking rooibos tea can contribute a small portion of the recommended daily allowance of manganese and zinc for male and female consumers.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2021)
Article
Chemistry, Analytical
Xiao Zhang, Xin-Yi Jiang, Shuai Chen, Yong-Liang Yu, Jian-Hua Wang
Summary: Dried blood spot (DBS) detection is a convenient and reliable method for large-scale evaluation of arsenic exposure in human population. A Lego-spinner pretreatment device is designed for speciation analysis of arsenic in DBSs by IC-ICP-MS. The device can extract and separate arsenic species from the blood matrix efficiently, and the concentrations of arsenic species in the DBS are highly correlated with those in whole blood. The DBS sampling approach can effectively preserve arsenic species for at least 30 days, and the contents of arsenic species in DBSs prepared from capillary blood are in agreement with venous whole blood.
ANALYTICAL CHEMISTRY
(2023)
Article
Food Science & Technology
Hong-lin Liu, Qing Meng, Xin Zhao, Yu-long Ye, Hua-rong Tong
Summary: The study utilized multi-element and stable isotopes analysis combined with chemometrics to establish a model for discriminating the authenticity of teas, and through validation and testing, confirmed the high accuracy and feasibility of this method in identifying the authenticity of teas.
Article
Biochemical Research Methods
Maria S. Jimenez, Mariam Bakir, Daniel Isabal, Maria T. Gomez, Josefina Perez-Arantegui, Juan R. Castillo, Francisco Laborda
Summary: In this study, hydrodynamic chromatography coupled to inductively coupled plasma mass spectrometry was used to simultaneously determine dissolved and nanoparticulate species of gold and silver, with optimized mobile phase for resolution and recovery. The developed methods allowed for quick and accurate detection of nanoparticulate and dissolved species of gold and silver in dietary supplements, showing good agreement with other analysis methods. Due to achievable resolution, the quality of quantitative results is influenced by the relative abundance and size of nanoparticles present.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Geosciences, Multidisciplinary
Mokgehle R. Letsoalo, Messai A. Mamo, Abayneh A. Ambushe
Summary: This study aimed to conduct multi-elemental speciation of As and Cr in water samples using HPLC-ICP-MS, successfully quantifying the elements through optimized methods. The concentrations of pollutant elements and total concentrations in the river showed statistically insignificant variations between seasonal states, except for DMA.
PHYSICS AND CHEMISTRY OF THE EARTH
(2021)
Article
Nanoscience & Nanotechnology
Patrick Hartwich, Christian Pritzel, Manuela S. Killian
Summary: This study proposes an alternative utilization of titanium dioxide by covering surfaces of cement-based materials with a regular-shaped monolayer of photocatalytically active titanium dioxide nanotube arrays. The study also presents a proposal for the synthesis of TiO2 nanotubes and transferring them onto material surfaces, providing the opportunity for applying the material to precast elements.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Food Science & Technology
Jie Wang, Ying Zhang, Yan Liu, Shaorong Zhang, Linying Yuan, Yingfu Zhong, Xiuhong Wu, Juan Yang, Ze Xu
Summary: The supercritical CO2-based decaffeination method can effectively remove caffeine from green and black teas, but it also leads to the loss of certain phytochemicals. The process results in changes in volatile compounds and sensory qualities of the teas. The acceptability of decaffeinated teas is influenced by the reduction in bitterness and astringency.
Article
Engineering, Environmental
A. Alrebh, M. Plunkett, L. Gaburici, M. Couillard, T. Lacelle, C. T. Kingston, K. S. Kim
Summary: This study presents a new method for the synthesis of boron nitride nanotubes (BNNTs) using ammonia borane (AB) as the raw material in hydrogen-assisted thermal plasma. The results show that AB can enhance the synthesis of BNNTs with reduced impurities and increased density of nucleating seeds.
CHEMICAL ENGINEERING JOURNAL
(2023)
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.