Articles with "quantitative determination" as a keyword



Quantitative determination of concentration profiles of skin components and topically applied oils by tailored multivariate curve resolution‐alternating least squares using in vivo confocal Raman micro‐spectroscopy

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Published in 2022 at "Journal of Biophotonics"

DOI: 10.1002/jbio.202200219

Abstract: The main components of the stratum corneum (SC), water, lipids, and proteins, are non‐homogeneously distributed throughout the depth. The quantitative determination of their concentration profiles and penetration depth of topically applied substances are urgent topics… read more here.

Keywords: quantitative determination; spectroscopy; topically applied; raman ... See more keywords

A method for the quantitative determination of glycerophospholipid regioisomers by UPLC-ESI-MS/MS

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Published in 2018 at "Analytical and Bioanalytical Chemistry"

DOI: 10.1007/s00216-018-1517-5

Abstract: Diacyl glycerophospholipids (GPs) belong to the most abundant lipid species in living organisms and consist of a glycerol backbone with fatty acyl groups in sn-1 and sn-2 and a polar head group in the sn-3… read more here.

Keywords: diacyl; mixed diacyl; method quantitative; method ... See more keywords

Quantitative determination and validation of 96 pesticides in cannabis by LC-MS/MS and GC-MS/MS

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Published in 2025 at "Analytical and Bioanalytical Chemistry"

DOI: 10.1007/s00216-025-05918-9

Abstract: Canada has established a strict set of testing requirements for pesticides that are unauthorized for use on cannabis, currently holding the most extensive list of analytes in North America to date, listing minimum method performance… read more here.

Keywords: quantitative determination; pesticides cannabis; determination validation; validation pesticides ... See more keywords

Quantitative determination of kokumi compounds, γ-glutamyl peptides, in Korean traditional fermented foods, ganjang and doenjang, by LC-MS/MS

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Published in 2021 at "Food Science and Biotechnology"

DOI: 10.1007/s10068-021-00993-x

Abstract: Recent studies have shown that γ-glutamyl peptides (GGPs) are recognized by the calcium-sensing receptor and induce kokumi taste. The contents of GGP have been reported in some fermented foods such as cheese and Japanese soy… read more here.

Keywords: ganjang doenjang; glutamyl peptides; fermented foods; ganjang ... See more keywords

Quantitative determination of residue amounts of pesticide active ingredients used in grapes by LC-MS/MS and GC-MS/MS devices and evaluation of these pesticides in terms of public health

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Published in 2024 at "Environmental Science and Pollution Research"

DOI: 10.1007/s11356-024-33693-0

Abstract: The aim of this study was to quantitatively determine pesticide residues in grapes, one of the most produced and consumed fruits in Turkey and in the world. A total of 226 active ingredients were analyzed… read more here.

Keywords: quantitative determination; amounts pesticide; pesticide active; active ingredients ... See more keywords

Development of a new format of competitive immunochromatographic assay using secondary antibody-europium nanoparticle conjugates for ultrasensitive and quantitative determination of ochratoxin A.

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Published in 2019 at "Food chemistry"

DOI: 10.1016/j.foodchem.2018.09.112

Abstract: In this study, to enhance the sensitivity of conventional immunochromatographic assay (ICA) two strategies including using a high sensitive label and changing the assay format, were simultaneously applied to develop an ultrasensitive format of ICA.… read more here.

Keywords: immunochromatographic assay; antibody; new format; ochratoxin ... See more keywords

Quantitative determination of AI-2 quorum-sensing signal of bacteria using high performance liquid chromatography-tandem mass spectrometry.

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Published in 2017 at "Journal of environmental sciences"

DOI: 10.1016/j.jes.2016.04.018

Abstract: Autoinducer 2 (AI-2), an important bioactive by-product of the LuxS-catalyzed S-ribosylhomocysteine cleavage reaction in the activated-methyl-cycle, has been suggested to serve as a universal intra- and inter-species signaling molecule. The development of reliable and sensitive… read more here.

Keywords: chromatography tandem; liquid chromatography; quantitative determination; high performance ... See more keywords
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A flow analysis system integrating an optoelectronic detector for the quantitative determination of active ingredients in pharmaceutical formulations

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Published in 2021 at "Microchemical Journal"

DOI: 10.1016/j.microc.2020.105710

Abstract: Abstract A simple, compact and low-cost optoelectronic detector was developed for complete turbidimetric measurements under continuous flow injection analysis. The device was fabricated by integrating white snow light-emitting diodes as a light source with solar… read more here.

Keywords: system; analysis; optoelectronic detector; detector ... See more keywords

Quantitative determination of protamine using a fluorescent protein chromophore-based AIE probe

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Published in 2021 at "Tetrahedron"

DOI: 10.1016/j.tet.2021.132218

Abstract: Abstract An aggregation induced emission (AIE) fluorescent protein chromophore derivative CIC-FP for detecting protamine and heparin under physiological environment was designed and synthesized. CIC-FP exhibited good biocompatibility and a large stoke shift (91 nm), thus well… read more here.

Keywords: cic; protein chromophore; protamine; quantitative determination ... See more keywords

Quantitative Determination of Endogenous Tetrahydroisoquinolines, Potential Parkinson's Disease Biomarkers, in Mammals.

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Published in 2022 at "ACS chemical neuroscience"

DOI: 10.1021/acschemneuro.2c00516

Abstract: Current diagnostic options for Parkinson's disease are very limited and primarily based on characteristic clinical symptoms. Thus, there are urgent needs for reliable biomarkers that enable us to diagnose the disease in the early stages,… read more here.

Keywords: disease; determination endogenous; parkinson disease; quantitative determination ... See more keywords

Quantitative determination of calcium ions by means of enhanced fluorescence of silver nanocluster complex

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Published in 2017 at "Analytical Methods"

DOI: 10.1039/c6ay02477g

Abstract: A simple and green method for the synthesis of fluorescent silver nanocluster–nanoparticle complexes (AgNCs–AgNPs) is presented. In this method, Ag+ was reduced to form AgNCs–AgNPs using hydrogen as the reductant and sodium polyacrylate as a… read more here.

Keywords: silver nanocluster; quantitative determination; fluorescence;