Results 21 to 30 of about 26,038 (246)

Quantitation of Mycotoxins in Four Food Matrices Comparing Stable Isotope Dilution Assay (SIDA) with Matrix-Matched Calibration Methods by LC-MS/MS.

Journal of AOAC International, 2019
Background: Mycotoxins are big concerns in food safety. Analytical methods are important for the evaluation of mycotoxins in different food commodities.
Dan Li, Justin A. Steimling, J. Konschnik, Scott L Grossm, T. Kahler   +4 more
semanticscholar   +1 more source

The Use of Stable and Radioactive Sterol Tracers as a Tool to Investigate Cholesterol Degradation to Bile Acids in Humans in Vivo

Molecules, 2012
Alterations of cholesterol homeostasis represent important risk factors for atherosclerosis and cardiovascular disease. Different clinical-experimental approaches have been devised to study the metabolism of cholesterol and particularly the synthesis of ...
Marina Del Puppo, Marco Bertolotti, Andrea Crosignani   +2 more
doaj   +1 more source

Detection and Isolation of Emetic Bacillus cereus Toxin Cereulide by Reversed Phase Chromatography

Toxins, 2021
The emetic toxin cereulide is a 1.2 kDa dodecadepsipeptide produced by the food pathogen Bacillus cereus. As cereulide poses a serious health risk to humans, sensitive and specific detection, as well as toxin purification and quantification, methods are ...
Eva Maria Kalbhenn, Tobias Bauer, Timo D. Stark, Mandy Knüpfer, Gregor Grass, Monika Ehling-Schulz   +5 more
doaj   +1 more source

Folate vitamers in the Australian green plum: Through growth and ripening and across locations

Frontiers in Nutrition, 2022
The green plum is a native fruit of Australia that grows on the tree Buchanania obovata. This study aimed to confirm the high level of folate in green plums by analyzing a large number of ripe samples from multiple locations and to understand how folate ...
Selina Fyfe, Selina Fyfe, Hung Hong, Hung Hong, Horst Joachim Schirra, Horst Joachim Schirra, Horst Joachim Schirra, Heather E. Smyth, Yasmina Sultanbawa, Michael Rychlik, Michael Rychlik   +10 more
doaj   +1 more source

Statistical characterization of multiple-reaction monitoring mass spectrometry (MRM-MS) assays for quantitative proteomics

BMC Bioinformatics, 2012
Multiple reaction monitoring mass spectrometry (MRM-MS) with stable isotope dilution (SID) is increasingly becoming a widely accepted assay for the quantification of proteins and peptides.
Mani D R, Abbatiello Susan E, Carr Steven A   +2 more
doaj   +1 more source

Analysis of the Ability to Produce Pleasant Aromas on Sour Whey and Buttermilk By-Products by Mold Galactomyces geotrichum: Identification of Key Odorants

Molecules, 2021
Currently, there is a growing demand for flavorings, especially of natural origin. It is worth paying attention to the biotechnological processes of flavor production, characterized by simplicity, high efficiency and relatively low cost.
Kamila Szudera-Kończal, Kamila Myszka, Piotr Kubiak, Małgorzata Anna Majcher   +3 more
doaj   +1 more source

Promising Tropical Fruits High in Folates

Foods, 2019
As the popularity of tropical fruits has been increasing consistently during the last few decades, nutritional and health-related data about these fruits have been gaining more and more interest.
Lisa Striegel, Nadine Weber, Caroline Dumler, Soraya Chebib, Michael E. Netzel, Yasmina Sultanbawa, Michael Rychlik   +6 more
doaj   +1 more source

A simple and sensitive enzymatic method for cholesterol quantification in macrophages and foam cells

Journal of Lipid Research, 2010
A precise and sensitive method for measuring cellular free and esterified cholesterol is required in order to perform studies of macrophage cholesterol loading, metabolism, storage, and efflux.
Peggy Robinet, Zeneng Wang, Stanley L. Hazen, Jonathan D. Smith   +3 more
doaj   +1 more source

Study of chloroanisoles assay and tca assay validation in wine and cork stoppers soaked in dilute alcohol solution using SIDA-HSSPME-GC-MS/EI-SIM*

OENO One, 2005
The work we present in this article aims at optimizing and validating the assay technique based on SIDA-HSSPMEGC- MS/EI-SIM by means of intra-laboratory trials (NF V03-110 AFNOR 1998 and MA-F-AS1-06-PROVAL (OIV)) on several chloroanisoles (2,4,6 ...
Pascal Chatonnet, Dominique Labadie, Stéphane Boutou   +2 more
doaj   +1 more source

An estimate assay for low-level exposure to ionizing radiation based on mass spectrometry quantification of γ-H2AX in human peripheral blood lymphocytes

Frontiers in Public Health, 2022
Exposure to environmental ionizing radiation (IR) is ubiquitous, and large-dose exposure to IR is known to cause DNA damage and genotoxicity which is associated with an increased risk of cancer.
Hongling Zhao, Minmin Qu, Yuchen Li, Ke Wen, Hua Xu, Man Song, Dafei Xie, Xingkun Ao, Yihao Gong, Li Sui, Hua Guan, Pingkun Zhou, Jianwei Xie   +12 more
doaj   +1 more source