Results 41 to 50 of about 2,787,968 (277)

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

Degradation changes stable carbon isotope depth profiles in palsa peatlands [PDF]

, 2014
Palsa peatlands are a significant carbon pool in the global carbon cycle and are projected to change by global warming due to accelerated permafrost thaw. Our aim was to use stable carbon isotopes as indicators of palsa degradation.
Leifeld, J., C. Alewell, J. P. Krüger, Alewell, C., Krueger, J. P., J. Leifeld   +5 more
core   +2 more sources

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

Quantitative Analysis of 2-Aminoacetophenone in Off-Flavored Wines by Stable Isotope Dilution Assay [PDF]

Journal of AOAC INTERNATIONAL, 1996
Abstract Isotope dilution analysis was used to quantitate 2- aminoacetophenone in wines exhibiting the so- called untypical aging off-flavor. d3-Aminoacetophe- none was synthesized and used as isotopomeric internal standard. The method of quantitation was verified by several model experiments.
B, Dollmann, D, Wichmann, A, Schmitt, H, Koehler, P, Schreier   +4 more
openaire   +2 more sources

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

Validation of the stable isotope dilution assay.

, 2019
Validation of the stable isotope dilution assay.
Lukas Sam (6387986), Lisa Striegel (6387980), Markus Kopp (831010), Beate Brandl (6387983), Michael Rychlik (447033), Thomas Skurk (1985206)   +5 more
core   +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

Quantitation of Six Alternaria Toxins in Infant Foods Applying Stable Isotope Labeled Standards

Frontiers in Microbiology, 2019
Alternaria fungi are widely distributed saprophytes and plant pathogens. As pathogens, Alternaria fungi infect crops and vegetables and cause losses in the fields and during postharvest storage.
Marina Gotthardt, Stefan Asam, Klara Gunkel, Atefeh Fooladi Moghaddam, Atefeh Fooladi Moghaddam, Elisabeth Baumann, Roland Kietz, Michael Rychlik   +7 more
doaj   +1 more source