Results 1 to 10 of about 15,571 (114)

An improved folate stable isotope dilution assay of unexploited food sources from Brazil [PDF]

open access: yesFrontiers in Nutrition, 2023
Brazil has a diverse plant community, including underutilized non-conventional food crops (PANCs), which have the potential to be a rich source of food and contribute to food security.
Lisa Obermaier   +10 more
doaj   +2 more sources

Microalgae a Superior Source of Folates: Quantification of Folates in Halophile Microalgae by Stable Isotope Dilution Assay [PDF]

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
A multitude of human nutritional supplements based on Chlorella vulgaris biomass has recently been introduced to the specialty food market. In this study, an analysis of total folate contents in Chlorella sp.
Dirk Volker Woortman   +7 more
doaj   +2 more sources

Improved Stable Isotope Dilution Assay for Dietary Folates Using LC-MS/MS and Its Application to Strawberries [PDF]

open access: yesFrontiers in Chemistry, 2018
Folates play an important role in the human body and a deficiency of this vitamin can cause several diseases. Therefore, a reliable analytical method is crucial for the determination of folate vitamers in strawberries and other dietary folate sources.
Lisa Striegel   +4 more
doaj   +2 more sources

Examination of paraben release from baby teethers through migration tests and GC–MS analysis using a stable isotope dilution assay [PDF]

open access: yesBMC Chemistry, 2019
Parabens and sorbic acid are commonly used as food preservatives due to their antimicrobial effect. However, their use in foods for infants and young children is not permitted in the European Union.
Theodoros Potouridis   +3 more
doaj   +2 more sources

Absolute quantification of tumor necrosis factor-alpha by isotope dilution mass spectrometry [PDF]

open access: yesFrontiers in Chemistry
Tumor necrosis factor-α (TNF-α) is an important inflammatory mediator and has been widely recognized as a diagnostic biomarker for various autoimmune and infectious diseases in clinical practice, such as rheumatoid arthritis.
Chenchen Bao   +8 more
doaj   +2 more sources

Quantitative Succinylacetone Measurement by Gas Chromatography‐Tandem Mass Spectrometry (GC–MS/MS) Facilitates Diagnosis, Monitoring, and Characterization of Tyrosinemia Type 1 and Other Hypersuccinylacetonemias [PDF]

open access: yesJIMD Reports
Tyrosinemia type 1 (HT1), due to deficient activity of fumarylacetoacetate hydrolase, causes accumulation of succinylacetone (SA). SA concentrations in urine and plasma of untreated HT1 patients are typically several thousand‐fold higher than normal ...
Denis Cyr   +2 more
doaj   +2 more sources

Stable isotope dilution mass spectrometry quantification of hydrogen sulfide and thiols in biological matrices

open access: yesRedox Biology, 2022
Background: Hydrogen sulfide (H2S), a gaseous signaling molecule that impacts multiple physiological processes including aging, is produced via select mammalian enzymes and enteric sulfur-reducing bacteria.
Hind Malaeb   +9 more
doaj   +1 more source

Development and Validation of an LC-MS/MS Based Method for the Determination of Deoxynivalenol and Its Modified Forms in Maize

open access: yesToxins, 2021
The Fusarium mycotoxin deoxynivalenol (DON) is a common contaminant of cereals and is often co-occurring with its modified forms DON-3-glucoside (D3G), 3-acetyl-DON (3ADON) or 15-acetyl-DON (15ADON). A stable-isotope dilution liquid chromatography-tandem
Iris Fiby   +4 more
doaj   +1 more source

Synthesis of d6-deuterated analogues of aroma molecules-β-damascenone, β-damascone and safranal

open access: yesResults in Chemistry, 2022
β-Damascenone, a C13-norisoprenoid, is an important aroma compound not only in wine but also in the perfume and flavouring industries. Its key contribution to the floral aromas of many wine varieties, and impact on the overall wine aroma profile, make ...
Shabnam Mosaferi   +3 more
doaj   +1 more source

Clinical utility of insulin-like growth factor 1 and 2; determination by high resolution mass spectrometry. [PDF]

open access: yesPLoS ONE, 2012
Measurement of insulin-like growth factor-1 (IGF-I) has utility for the diagnosis and management of growth disorders, but inter-assay comparison of results has been complicated by a multitude of reference standards, antibodies, detection methods, and pre-
Cory Bystrom   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy