LAUSR

About LAUSR
Donate
Contact Us

Follow us:

You are not signed in:

Sign Up!


   Articles with "esi orbitrap" as a keyword



Photo from wikipedia

Foodinformatic prediction of the retention time of pesticide residues detected in fruits and vegetables using UHPLC/ESI Q-Orbitrap.

Sign Up to like & get
recommendations! Published in 2020 at "Food chemistry"

DOI: 10.1016/j.foodchem.2020.128354

Abstract: The present work describes the development of an in silico model to predict the retention time (tR) of a large Compound DataBase (CDB) of pesticides detected in fruits and vegetables. The model utilizes ultrahigh-performance liquid… read more here.

Keywords: esi orbitrap; retention time; orbitrap; uhplc esi ... See more keywords

Oxygen Isotope Analysis of Nanomole Phosphate Using PO3- Fragment in ESI-Orbitrap-MS.

Sign Up to like & get
recommendations! Published in 2024 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.3c03070

Abstract: The oxygen isotope composition of phosphate is a useful tool for studying biogeochemical phosphorus cycling. However, the current Ag3PO4 method is not only tedious in PO43- extraction and purification but also requires a large-sized sample… read more here.

Keywords: esi orbitrap; oxygen isotope; po3 fragment; using po3 ... See more keywords

Triple Oxygen Isotope Analysis of Methanesulfonate Using the SO3- Fragment in ESI-Orbitrap-MS.

Sign Up to like & get
recommendations! Published in 2025 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.5c01382

Abstract: Atmospheric oxidation of dimethyl sulfide (DMS, CH3SCH3) to sulfate (SO42-) and methanesulfonate (MSA, CH3SO3-) is a key process for the atmospheric sulfur cycle, particularly in remote marine regions. To better understand the DMS oxidation chemistry,… read more here.

Keywords: esi orbitrap; chemistry; oxygen isotope; mass ... See more keywords

Screening of potential α-glucosidase inhibitors from astragalus membranaceus by affinity ultrafiltration screening coupled with UPLC-ESI-Orbitrap-MS method

Sign Up to like & get
recommendations! Published in 2024 at "Journal of Asian Natural Products Research"

DOI: 10.1080/10286020.2024.2366007

Abstract: Abstract Astragalus membranaceus is a traditional Chinese medicine with multiple pharmacological activities. Modern pharmacological research has found that Astragalus membranaceus extract has an inhibitory effect on α-glucosidase, however, which component can inhibit the activity of… read more here.

Keywords: esi orbitrap; glucosidase inhibitors; uplc esi; affinity ultrafiltration ... See more keywords

Investigating the anti-atherosclerotic effect and potential mechanism of Sanzi San in ApoE-defcient mice by UHPLC-ESI-QE-Orbitrap-MS based non-targeted metabonomics.

Sign Up to like & get
recommendations! Published in 2025 at "Natural product research"

DOI: 10.1080/14786419.2025.2565275

Abstract: CM), which is a well-known classic formula with an anti-atherosclerotic (AS) effect. However, the mechanism of SZS's anti-AS action remains to be further elucidated. This study went to check how well SZS works for AS… read more here.

Keywords: esi orbitrap; mice uhplc; anti atherosclerotic; atherosclerotic effect ... See more keywords

Application of nDATA Workflow for Semi-Quantitative Screening of 1094 Pesticide Residues in Fruits and Vegetables Using UHPLC/ESI Q-Orbitrap Full MS/vDIA.

Sign Up to like & get
recommendations! Published in 2025 at "Journal of AOAC International"

DOI: 10.1093/jaoacint/qsaf009

Abstract: BACKGROUND Cost-effective multi-residue pesticide methods with a broad detection scope are desired for risk-based monitoring programs. OBJECTIVE The aim was to evaluate the nDATA (non-target Data Acquisition for Target Analysis) workflow using UHPLC/ESI quadrupole-Orbitrap (Q-Orbitrap)… read more here.

Keywords: esi orbitrap; orbitrap; vdia; uhplc esi ... See more keywords

HR-LC-ESI-Orbitrap-MS-Based Metabolic Profiling Coupled with Chemometrics for the Discrimination of Different Echinops spinosus Organs and Evaluation of Their Antioxidant Activity

Sign Up to like & get
recommendations! Published in 2022 at "Antioxidants"

DOI: 10.3390/antiox11030453

Abstract: This study aimed to assess and correlate the phenolic content and the antioxidant activity of the methanol extracts of the stems, roots, flowers, and leaves of Echinops spinosus L. from north-eastern Algeria. Qualitative analysis was… read more here.

Keywords: echinops spinosus; antioxidant activity; spinosus organs; dried residue ... See more keywords