Results 31 to 40 of about 9,324 (214)

QuEChERS-näytteenkäsittelymenetelmän kehittäminen lääkeaineiden monijäämäseulonnalle maidosta [PDF]

, 2021
Ruokavirastossa tutkitaan lääkeainejäämiä eläinperäisistä elintarvikkeista viranomaisvalvontaan kuuluvassa vierasainevalvontaohjelmassa. Jäämien seulontaan käytettävät menetelmät ovat joko LC-MS/MS-, GC-MS/MS- tai ELISA-tekniikkaan perustuvia. Kyseisillä
Lund, Maria
core  

Liquid chromatography–mass spectrometry analysis of carvacrol in chicken tissues

Journal of Veterinary Research, 2022
Carvacrol is an essential oil derived from oregano that is used as a natural additive to improve the efficiency of livestock nutrition. Residues of natural additives such as carvacrol should be monitored in food of animal origin to ensure consumer safety.
Śniegocki Tomasz
doaj   +1 more source

Analysis of insecticide residues in honey by liquid chromatography tandem mass spectrometry using QuEChERS optimized by the Plackett Burman design

CyTA - Journal of Food, 2021
A liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) analytical method using a modified QuEChERS sample preparation for the analysis of insecticide residues in honey was developed and validated.
Ana Paula Ferreirade Souza, Mateus Henrique Petrarca, Patrícia Aparecida de Campos Braga, Nadia Regina Rodrigues, Felix Guillermo Reyes Reyes   +4 more
doaj   +1 more source

Analysis of drugs in the earthworms using the QuEChERS method

, 2023
The content of this Bachelor‘s thesis is an analysis of pharmaceuticals in earthworms using the QuECHERS method followed by the LC-MS/MS analysis. The theoretical part focuses on the specific groups of used drugs, their properties and applications ...
Navrkalová, Jitka
core   +1 more source

Application of QuEChERS method for extraction of functional compounds [PDF]

SN Applied Sciences, 2020
Barberry has valuable compounds with high functional properties such as berberine. In this study, the QuEChERS method was applied for the extraction of berberine, phenolic, and antioxidant compounds of B.integerrima stem and compared with the maceration method.
Mozhdeh Sarraf, Adel Beig-babaei, Sara Naji-Tabasi   +2 more
openaire   +1 more source

Gas chromatography–mass spectrometry determination of deltamethrin in food

Учёные записки Казанского университета: Серия Естественные науки, 2021
The article presents the results of the determination of the synthetic pyrethroid deltamethrin in raw food and various food products by gas chromatography with mass spectrometric detection (GC–MS).
I.M. Fitsev, E.R. Rakhmetova, A.G. Mukhammetshina, K.E. Burkin, O.V. Shlyamina   +4 more
doaj   +1 more source

Overview of the QuEChERS Method for Sample's extraction in different food, environmental and biological samples. [PDF]

Records of Pharmaceutical & Biomedical Sciences
The QuEChERS method is a sample preparation technique that was first applied in analytical chemistry to extract and purify pesticide residues in food. QuEChERS is an acronym for (quick, easy, cheap, effective, rugged, and safe).
Ghada Salama, Hatem Mokhtar, Eman Abdel Hameed, Alaa El-Gendy   +3 more
doaj   +1 more source

Determination of 34 Insecticide Residues in Vegetables by QuEChERS-High-Performance Liquid Chromatography Triple Quadrupole Linear Ion Trap Tandem Mass Spectrometry

Shipin gongye ke-ji
This article established a rapid detection method for 34 pesticides in vegetables by combining QuEChERS purification method with high-performance liquid chromatography triple quadrupole linear ion trap tandem mass spectrometry. The samples were extracted
Jingyang LUO, Jiao LI, Jian GUAN, Qiaolian LI, Yansong WANG, Shuai YUAN   +5 more
doaj   +1 more source

DETERMINAÇÃO DE MULTIRRESÍDUOS DE AGROTÓXICOS EM MÉIS PRODUZIDOS NA REGIÃO DO TRIÂNGULO MINEIRO POR UHPLC-MS/MS

Química Nova
Excessive use of pesticides can lead to the accumulation of residues in different parts of plants, endangering various species and contaminating foods.
Renata A. G. Silva, Anizio M. Faria
doaj   +1 more source

Evaluation of method performance and matrix effect for 57 commonly used herbicides in some vegetable families using LC-MS/MS determination

Cogent Food & Agriculture, 2020
A modified QuEChERS method was employed with LC-MS/MS to evaluate the matrix effects of 12 different vegetables matrices in 57 globally used herbicides. The average recoveries of pesticides at different concentrations varied between 70 and 120%.
Ali S. Mohammed, Gouda A. Ramadan, Ahmed I. Abdelkader, Sohair A. Gadalla, Mohsen M. Ayoub, Najat A. Alabdulmalik, Wasan A. AL Baker   +6 more
doaj   +1 more source