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1. A guide of column selection for two-dimensional liquid chromatography method development of natural alkaloids

Author:
Yang Xu; Yanfang Liu; Han Zhou; Rong Wang; Dongping Yu; Zhimou Guo; Xinmiao Liang
Source:
Talanta 2023 v.251 pp. 123738
ISSN:
0039-9140
Subject:
liquid chromatography,   etc   ; alkaloids; chemical species; drugs;     Show all 4 Subjects
Abstract:
... Natural products, especially alkaloids, are one of the most valuable, potential drug leads in drug discovery. As an efficient tool for complex samples, two-dimensional liquid chromatography (2D-LC) has become a powerful means of analysis and separation of natural alkaloids. Method development of 2D-LC is of great importance because it helps to enhance the selectivity, resolution and peak capacity ...
DOI:
10.1016/j.talanta.2022.123738

2. Real-world emission characteristics of carbonyl compounds from agricultural machines based on a portable emission measurement system

Author:
Wenhan Yu; Xianbao Shen; Bobo Wu; Lei Kong; Kaijie Xuan; Cheng Zhao; Xinyue Cao; Xuewei Hao; Xin Li; Hanyu Zhang; Zhiliang Yao
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 846-859
ISSN:
1001-0742
Subject:
high performance liquid chromatography,   etc   ; acetaldehyde; acrolein; emissions factor; formaldehyde; smog pollution; tillage; China;     Show all 8 Subjects
Abstract:
... Emissions of carbonyl compounds from agricultural machines cannot be ignored. Carbonyl compounds can cause the formation of ozone (O₃) and secondary organic aerosols, which can cause photochemical smog to form. In this study, 20 agricultural machines were tested using portable emission measurement system (PEMS) under real-world tillage processes. The exhaust gases were sampled using 2,4-dinitrophe ...
DOI:
10.1016/j.jes.2022.02.031

3. Trace determination of tetrahydrocannabinol (THC) in cosmetic products by stir bar sorptive dispersive microextraction followed by liquid chromatography-tandem mass spectrometry

Author:
Cristian Azorín; Juan L. Benedé; Alberto Chisvert; Amparo Salvador
Source:
Talanta 2023 v.253 pp. 123934
ISSN:
0039-9140
Subject:
liquid chromatography,   etc   ; cannabidiol; cosmetics; isomerization; magnetism; microextraction; nanoparticles; polymers; sorbents; tandem mass spectrometry; tetrahydrocannabinol;     Show all 11 Subjects
Abstract:
... An analytical method for the determination of tetrahydrocannabinol (THC) at trace level in cosmetics is presented. As psychoactive compound, the presence of THC in consumer products should be avoided. However, it might be unintentionally present in cannabidiol-rich or hemp-based products by contamination or isomerization of cannabidiol. Due to the low concentrations expected, a sensitive and selec ...
DOI:
10.1016/j.talanta.2022.123934

4. Non-aqueous capillary electrophoresis–time of flight mass spectrometry method to determine emerging mycotoxins

Author:
María del Mar Delgado-Povedano; Francisco J. Lara; Laura Gámiz-Gracia; Ana M. García-Campaña
Source:
Talanta 2023 v.253 pp. 123946
ISSN:
0039-9140
Subject:
liquid chromatography,   etc   ; ammonium acetate; capillary electrophoresis; electric potential difference; mycotoxins; tandem mass spectrometry; temperature; wheat;     Show all 8 Subjects
Abstract:
... Enniatins (ENN) and beauvericin (BEA) are emerging mycotoxins that have been traditionally determined by liquid chromatography coupled to tandem mass spectrometry (LC–MS/MS). However, to the best of our knowledge, no analytical methods based on capillary electrophoresis (CE)–MS/MS have been reported so far. Due to their non-polar nature, in this work, a non-aqueous CE (NACE) method coupled to quad ...
DOI:
10.1016/j.talanta.2022.123946

5. Screening and identification of tyrosinase inhibitors in edible plant materials by on-line UPLC-enzyme reactor coupled with UHPLC-FTMS

Author:
Xiao Fang; Lei Dai; Tian-Ming Ding; Yao Zhu; Jun-Feng Zan; Lin-Lin Chen; Xiao-Ping Ding; Jun-Feng Liu
Source:
Food chemistry 2023 v.403 pp. 134331
ISSN:
0308-8146
Subject:
ultra-performance liquid chromatography,   etc   ; biosynthesis; cinnamon; diodes; food chemistry; food plants; green tea; mass spectrometry; melanin;     Show all 9 Subjects
Abstract:
... Tyrosinase plays a primary role in melanin biosynthesis and enzymatic browning of freshly cut fruits and vegetables. Herein, an on-line ultraperformance liquid chromatography diode array detector biochemical detection (UPLC-DAD-BCD) method was established to identify trace amount potent tyrosinase inhibitors and antibrowning agents in complex mixtures. The tyrosinase inhibition activities of some ...
DOI:
10.1016/j.foodchem.2022.134331

6. Comparing adsorption performance of microfibers and nanofibers with commercial molecularly imprinted polymers and restricted access media for extraction of bisphenols from milk coupled with liquid chromatography

Author:
Aneta Kholová; Ivona Lhotská; Jakub Erben; Jiří Chvojka; František Švec; Petr Solich; Dalibor Šatínský
Source:
Talanta 2023 v.252 pp. 123822
ISSN:
0039-9140
Subject:
liquid chromatography,   etc   ; European Union; adsorption; milk; molecular imprinting; nanofibers; polyamides; polyethylene; polypropylenes; solid phase extraction; sorbents;     Show all 11 Subjects
Abstract:
... Advanced solid phase extraction (SPE) fibrous sorbents including polyethylene, polypropylene poly (hydroxybutyrate), and polyamide 6 nanofibers, polycaprolactone microfibers/nanofibers, polycaprolactone microfibers/polyvinylidene difluoride nanofibers, and poly (hydroxybutyrate) microfibers/polypropylene microfibers composites, as well as commercial molecularly imprinted polymers and restricted ac ...
DOI:
10.1016/j.talanta.2022.123822

7. Profiling and spatial distribution of phenolic compounds in rapeseed by two-step extraction strategy and targeted metabolomics combined with chemometrics

Author:
Yao Zhang; Huaming Xiao; Xin Lv; Chang Zheng; Zongyuan Wu; Nian Wang; Jie Wang; Hong Chen; Fang Wei
Source:
Food chemistry 2023 v.401 pp. 134151
ISSN:
0308-8146
Subject:
liquid chromatography,   etc   ; chemometrics; color; food chemistry; isorhamnetin; kaempferol; metabolomics; rapeseed; sinapic acid; solvents; tandem mass spectrometry;     Show all 11 Subjects
Abstract:
... In this study, a two-step extraction strategy (TSES) and targeted metabolomics combined with chemometrics was successfully applied for profiling of phenolic compounds in different colored rapeseeds. To this end, organic solvent extraction followed by deep eutectic solvent extraction made up the TSES with improved extraction coverage of free phenolics and enhanced extraction yield of conjugated phe ...
DOI:
10.1016/j.foodchem.2022.134151

8. Coumarin-based derivatization reagent for LC-MS analysis of amino acids

Author:
Nguyễn Kim Ngân Bùi; Sigrid Selberg; Koit Herodes; Ivo Leito
Source:
Talanta 2023 v.252 pp. 123730
ISSN:
0039-9140
Subject:
high performance liquid chromatography,   etc   ; coumarin; derivatization; electrospray ionization mass spectrometry; fluorescence; tandem mass spectrometry; urea; wavelengths;     Show all 8 Subjects
Abstract:
... In this paper, we report about the application of a sensitive fluorescent derivatization reagent Coumarin151-N-Hydroxysuccinimidyl Carbamate (Cou151DSC) for amino compounds using high-performance liquid chromatography (HPLC) compatible with ultraviolet (UV), fluorescence detector (FLD) and electrospray ionization - tandem mass spectrometry (ESI-MS/MS)―positive mode. We optimized derivatization pro ...
DOI:
10.1016/j.talanta.2022.123730

9. Comparison of measured and declared vitamin D concentrations in Australian fortified foods

Author:
Katya M. Clark; Anthony P. James; Hio Ian Ip; Eleanor Dunlop; Judy Cunningham; Paul Adorno; Georgios Dabos; Lucinda J. Black
Source:
Journal of food composition and analysis 2023 v.115 pp. 104922
ISSN:
0889-1575
Subject:
liquid chromatography,   etc   ; breakfast; cocoa (beverage); cooking fats and oils; food composition; fortified foods; mass spectrometry; vitamin D;     Show all 8 Subjects
Abstract:
... Fortified foods are an important source of dietary vitamin D, since this nutrient occurs naturally in relatively low concentrations in a limited number of foods. Hence, we aimed to investigate the accuracy of the declared vitamin D content of Australian fortified foods. Vitamin D₃, 25-hydroxyvitamin D₃ (25(OH)D₃), vitamin D₂ and 25(OH)D₂ were measured in 30 fortified food samples (edible oil sprea ...
DOI:
10.1016/j.jfca.2022.104922

10. Assessment of pesticide residues contamination in cereals and pseudo-cereals marketed in the Canary Islands

Author:
Ruth Rodríguez-Ramos; Álvaro Santana-Mayor; Bárbara Socas-Rodríguez; Antonio V. Herrera-Herrera; Miguel Ángel Rodríguez-Delgado
Source:
Food chemistry 2023 v.400 pp. 134089
ISSN:
0308-8146
Subject:
ultra-performance liquid chromatography,   etc   ; barley; chemical species; diet; food chemistry; mass spectrometry; oats; pesticides; pseudocereals; rye; standard deviation;     Show all 11 Subjects
Abstract:
... In this work, the development of an analytical method for the evaluation of a wide variety of pesticide residues in cereals and pseudo-cereals widely consumed has been carried out. A QuEChERS method was used as extraction and clean-up procedure prior to separation and quantification of the target analytes by ultra-high performance liquid chromatography coupled to mass spectrometry using a single q ...
DOI:
10.1016/j.foodchem.2022.134089

11. Determination of chlorpromazine and its metabolites in animal-derived foods using QuEChERS-based extraction, EMR-Lipid cleanup, and UHPLC-Q-Orbitrap MS analysis

Author:
Jinxia Dai; Hui Lin; Yuning Pan; Yanmin Sun; Ye Wang; Jun-qin Qiao; Hong-zhen Lian; Chun-xiang Xu
Source:
Food chemistry 2023 v.403 pp. 134298
ISSN:
0308-8146
Subject:
ultra-performance liquid chromatography,   etc   ; animal husbandry; chemical species; chlorpromazine; fish; food chemistry; hydrolysis; mass spectrometry; metabolites; pork; risk;     Show all 11 Subjects
Abstract:
... Chlorpromazine (CPZ) is abused in animal husbandry and can be extensively metabolized in humans and animals. However, the actual monitoring mainly focuses on the parent compound but lacks attention to its metabolites. A method was developed and validated firstly for identification and determination of CPZ and its four major metabolites in animal-derived foods using ultrahigh-performance liquid chr ...
DOI:
10.1016/j.foodchem.2022.134298

12. Fluorinated magnetic porous carbons for dispersive solid-phase extraction of perfluorinated compounds

Author:
You-Ming Lin; Jia-Ning Sun; Xiao-Wen Yang; Rui-Yang Qin; Zhi-Qi Zhang
Source:
Talanta 2023 v.252 pp. 123860
ISSN:
0039-9140
Subject:
liquid chromatography,   etc   ; adsorbents; adsorption; detection limit; fluorine; magnetism; mass spectrometry; soil; solid phase extraction; standard deviation; surface area;     Show all 11 Subjects
Abstract:
... Novel magnetic and fluorinated porous carbons (M-FPCs) with high fluorine content, large pore volume and specific surface area were first prepared by carbonizing and further fluorinating Fe–Zr bimetal-organic frameworks. The M-FPCs exhibit excellent adsorption performance toward perfluorinated compounds (PFCs), and the maximal adsorption capacity ranges from 518.1 to 919.3 mg g⁻¹ for various PFCs. ...
DOI:
10.1016/j.talanta.2022.123860

13. Instrument comparability of non-targeted UHPLC-HRMS for wine authentication

Author:
Mona Ehlers; Leos Uttl; Janet Riedl; Julia Raeke; Imke Westkamp; Jana Hajslova; Jens Brockmeyer; Carsten Fauhl-Hassek
Source:
Food control 2023 v.144 pp. 109360
ISSN:
0956-7135
Subject:
liquid chromatography,   etc   ; discriminant analysis; food safety; grapes; mass spectrometry; models; multivariate analysis; prediction; product authenticity; spectrometers; white wines;     Show all 11 Subjects
Abstract:
... Instrument comparability is a major prerequisite for the harmonization of non-targeted analytical approaches for food authentication. While non-targeted liquid chromatography coupled with mass spectrometry (LC-MS) is a powerful and widely used technique in authenticity studies, inter-laboratory or instrument comparison exercises are rare. For the first time, in the present study a comparison of tw ...
DOI:
10.1016/j.foodcont.2022.109360

14. Simultaneous detection of two herbicides in fruits and vegetables with nanoparticle-linked immunosorbent and lateral flow immunoassays

Author:
Eunice Y. Kwon; Xiaofan Ruan; Fei Yu; Yuehe Lin; Dan Du; Bernard J. Van Wie
Source:
Food chemistry 2023 v.399 pp. 133955
ISSN:
0308-8146
Subject:
high performance liquid chromatography,   etc   ; acetochlor; atrazine; catalytic activity; colorimetry; crop production; food chemistry; fruits; immunoassays; juices; vegetables; voltammetry;     Show all 12 Subjects
Abstract:
... Herbicides atrazine and acetochlor are used in crop production. Because of environmental and health hazards with respective maximum contamination levels of 3 and 20 ng/mL, quantifying these herbicides is important when considering presence in foods and vegetables. We utilized two Pd@Pt nanoparticle-amplified immunoassays, a colorimetric Pd@Pt nanoparticle-linked immunosorbent assay (NLISA) and dif ...
DOI:
10.1016/j.foodchem.2022.133955

15. Determination of boscalid, pyraclostrobin and trifloxystrobin in dried grape and apricot by HPLC/UV method

Author:
Kenan Dost; Mertcan Öksüz; Mustafa Cittan; Büşra Mutlu; Betül Tural
Source:
Journal of food composition and analysis 2023 v.115 pp. 104926
ISSN:
0889-1575
Subject:
high performance liquid chromatography,   etc   ; acetonitrile; apricots; boscalid; detection limit; food composition; grapes; liquid-liquid extraction; pyraclostrobin; standard deviation; trifloxystrobin;     Show all 11 Subjects
Abstract:
... This paper describes the development of extraction and high-performance liquid chromatography with ultraviolet detection methods for the determination of boscalid, pyraclostrobin, and trifloxystrobin. The extraction method includes classical solid-liquid and liquid-liquid extraction methods. The fungicides and the internal standard were separated in less than 6.5 min on an ODS column with acetonit ...
DOI:
10.1016/j.jfca.2022.104926

16. Critical assessment of chemometric models employed for varietal authentication of wine based on UHPLC-HRMS data

Author:
Leos Uttl; Kamila Bechynska; Mona Ehlers; Vaclav Kadlec; Klara Navratilova; Zbynek Dzuman; Carsten Fauhl-Hassek; Jana Hajslova
Source:
Food control 2023 v.143 pp. 109336
ISSN:
0956-7135
Subject:
ultra-performance liquid chromatography,   etc   ; chemometrics; decision support systems; discriminant analysis; flavonoids; food safety; grapes; tandem mass spectrometry; white wines;     Show all 9 Subjects
Abstract:
... The use of metabolic fingerprinting combined with advanced chemometric tools for wine authentication has increased in recent years. Although numerous studies, showing different authentication strategies, have been published, rarely any attention has been paid to the stability of used classification models over a longer time period. Here, we present a reliable and robust metabolic fingerprinting-ba ...
DOI:
10.1016/j.foodcont.2022.109336

17. Preparation of a pyridyl covalent organic framework via Heck cross-coupling for solid-phase microextraction of perfluoropolyether carboxylic acids in food

Author:
Haoyue Han; Shangzhi Ding; Yanling Geng; Zhaoyu Qiao; Xuemei Li; Rongyu Wang; Xiqing Zhang; Wenhua Ji
Source:
Food chemistry 2023 v.403 pp. 134310
ISSN:
0308-8146
Subject:
liquid chromatography,   etc   ; adsorption; bioaccumulation; cross-coupling reactions; density functional theory; food chemistry; solid phase microextraction; tandem mass spectrometry; toxicity;     Show all 9 Subjects
Abstract:
... The growing detection of emerging perfluoropolyether carboxylic acids (PFECAs) in food has raised considerable concerns about their high persistence, bioaccumulation, and toxicity. In this study, a pyridine-functionalized covalent organic framework (Py-COF) was synthesized by introducing basic pyridyl groups into Br-COF via Heck cross-coupling. According to density functional theory, PFECAs were a ...
DOI:
10.1016/j.foodchem.2022.134310

18. A carbazole-based spherical microporous polymer for the solid-phase extraction of chlorophenols from water and honey samples

Author:
Yaxing Guo; Juntao Wang; Lin Hao; Weihua Liu; Xiumin Yang; Qiuhua Wu; Zhi Wang
Source:
Food chemistry 2023 v.398 pp. 133855
ISSN:
0308-8146
Subject:
high performance liquid chromatography,   etc   ; adsorbents; adsorption; catalysts; chemical species; chlorophenols; food chemistry; honey; polymers; porous media; solid phase extraction;     Show all 11 Subjects
Abstract:
... A new carbazole-based spherical microporous polymer (Car-BDA-POP) was fabricated by employing 4,4′-biphenyldicarboxaldehyde (BDA) and carbazole as monomers via a one-step and non-metal catalyst synthetic approach. It was then explored as an adsorbent for solid-phase extraction (SPE) of some chlorophenols (CPs). Under the optimized extraction conditions, the established Car-BDA-POP-based SPE couple ...
DOI:
10.1016/j.foodchem.2022.133855

19. Identification and comparison of palmitoleic acid (C16:1 n-7)-derived lipids in marine fish by-products by UHPLC-Q-exactive orbitrap mass spectrometry

Author:
Lijun Ge; Huicheng Yang; Weibo Lu; Yiwei Cui; Shikai Jian; Gongshuai Song; Jing Xue; Xin He; Qingcheng Wang; Qing Shen
Source:
Journal of food composition and analysis 2023 v.115 pp. 104925
ISSN:
0889-1575
Subject:
ultra-performance liquid chromatography,   etc   ; Pampus argenteus; Thunnus obesus; diacylglycerols; food composition; marine fish; mass spectrometry; palmitoleic acid; phospholipids; sardines; seafoods;     Show all 11 Subjects
Abstract:
... Palmitoleic acid (POA) is a monounsaturated n-7 fatty acid (16:1 n-7) that is active in modulating cardiovascular and metabolic processes. POA-structured phospholipids, diglycerides, and triglycerides (POA-PL, -DG, -TG) are abundantly present in marine life. In this study, POA and POA-lipids contained in crude lipids in visceral by-products of six seafood products (n = 6 for each sample) were anal ...
DOI:
10.1016/j.jfca.2022.104925

20. Quantitative lipidomic analysis of egg yolk, yolk granule, and yolk plasma

Author:
Xiaoqi He; Jinqiu Wang; Yi Wang; Beibei Wang; Jiamin Zhang; Fang Geng
Source:
Journal of food composition and analysis 2023 v.115 pp. 104880
ISSN:
0889-1575
Subject:
liquid chromatography,   etc   ; chickens; diacylglycerols; docosahexaenoic acid; egg yolk; eicosapentaenoic acid; food composition; lipid composition; lipidomics; lysophosphatidylcholine; phosphatidylethanolamines; tandem mass spectrometry;     Show all 12 Subjects
Abstract:
... Chicken egg yolk (EY) can be divided into yolk granule (EYG) and yolk plasma (EYP); they develop individually based on their remarkably different nutritional compositions and properties. However, the differences in lipid profiles between EYG and EYP have not been fully revealed. In this study, quantitative lipidomic analyses of EY, EYG, and EYP were implemented through a liquid chromatography-tand ...
DOI:
10.1016/j.jfca.2022.104880