Matches in SemOpenAlex for { <https://semopenalex.org/work/W2079905203> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W2079905203 endingPage "3875" @default.
- W2079905203 startingPage "3870" @default.
- W2079905203 abstract "Negative ion liquid chromatography-atmospheric pressure chemical ionization mass spectrometry [negative ion LC-(APCI)MS] was used for the identification of astaxanthin esters in extracts of commercial shrimp (Pandalus borealis) and dried microalga (Haematococcus pluvialis) samples. A cleanup step using a normal phase solid phase extraction (SPE) cartridge was applied prior to analysis. Recovery experiments with astaxanthin oleate as model compound proved the applicability of this step (98.5 +/- 7.6%; n = 4). The assignment of astaxanthin esters in negative ion LC-(APCI)MS was based on the detection of the molecular ion (M*-) and the formation of characteristic fragment ions, resulting from the loss of one or two fatty acids. Quantification of individual astaxanthin esters was performed using an astaxanthin calibration curve, which was found to be linear over the required range (1-51 micromol/L; r2 = 0.9996). Detection limits, based on the intensity of M*-, a signal-to-noise ratio of 3:1, and an injection volume of 20 microL, were estimated to be 0.05 microg/mL (free astaxanthin), 0.28 microg/mL (astaxanthin-C16:0), and 0.78 microg/mL (astaxanthin-C16:0/C16:0), respectively. This LC-(APCI)MS method allows for the first time the characterization of native astaxanthin esters in P. borealis and H. pluvialis without using time-consuming isolation steps with subsequent gas chromatographic analyses of fatty acid methyl esters. The results suggest that the pattern of astaxanthin-bound polyunsaturated fatty acids of P. borealis does not reflect the respective fatty acid pattern found in triacylglycerides. Application of the presented LC-(APCI)MS technique in common astaxanthin ester analysis will forestall erroneous xanthophyll ester assignment in natural sources." @default.
- W2079905203 created "2016-06-24" @default.
- W2079905203 creator A5078102463 @default.
- W2079905203 date "2004-05-19" @default.
- W2079905203 modified "2023-10-12" @default.
- W2079905203 title "Identification and Quantification of Astaxanthin Esters in Shrimp (<i>Pandalus borealis</i>) and in a Microalga (<i>Haematococcus pluvialis</i>) by Liquid Chromatography−Mass Spectrometry Using Negative Ion Atmospheric Pressure Chemical Ionization" @default.
- W2079905203 cites W1975808218 @default.
- W2079905203 cites W1977299824 @default.
- W2079905203 cites W1995917451 @default.
- W2079905203 cites W2004532891 @default.
- W2079905203 cites W2007528602 @default.
- W2079905203 cites W2013472837 @default.
- W2079905203 cites W2026217858 @default.
- W2079905203 cites W2049892804 @default.
- W2079905203 cites W2083590520 @default.
- W2079905203 cites W2119985163 @default.
- W2079905203 cites W2145417940 @default.
- W2079905203 doi "https://doi.org/10.1021/jf049780b" @default.
- W2079905203 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15186109" @default.
- W2079905203 hasPublicationYear "2004" @default.
- W2079905203 type Work @default.
- W2079905203 sameAs 2079905203 @default.
- W2079905203 citedByCount "106" @default.
- W2079905203 countsByYear W20799052032012 @default.
- W2079905203 countsByYear W20799052032013 @default.
- W2079905203 countsByYear W20799052032014 @default.
- W2079905203 countsByYear W20799052032015 @default.
- W2079905203 countsByYear W20799052032016 @default.
- W2079905203 countsByYear W20799052032017 @default.
- W2079905203 countsByYear W20799052032018 @default.
- W2079905203 countsByYear W20799052032019 @default.
- W2079905203 countsByYear W20799052032020 @default.
- W2079905203 countsByYear W20799052032021 @default.
- W2079905203 countsByYear W20799052032022 @default.
- W2079905203 countsByYear W20799052032023 @default.
- W2079905203 crossrefType "journal-article" @default.
- W2079905203 hasAuthorship W2079905203A5078102463 @default.
- W2079905203 hasConcept C145148216 @default.
- W2079905203 hasConcept C148065180 @default.
- W2079905203 hasConcept C162356407 @default.
- W2079905203 hasConcept C178790620 @default.
- W2079905203 hasConcept C179998833 @default.
- W2079905203 hasConcept C185592680 @default.
- W2079905203 hasConcept C198291218 @default.
- W2079905203 hasConcept C2777399995 @default.
- W2079905203 hasConcept C2780962900 @default.
- W2079905203 hasConcept C28781525 @default.
- W2079905203 hasConcept C43617362 @default.
- W2079905203 hasConcept C51884965 @default.
- W2079905203 hasConcept C55493867 @default.
- W2079905203 hasConcept C64489805 @default.
- W2079905203 hasConcept C81426234 @default.
- W2079905203 hasConceptScore W2079905203C145148216 @default.
- W2079905203 hasConceptScore W2079905203C148065180 @default.
- W2079905203 hasConceptScore W2079905203C162356407 @default.
- W2079905203 hasConceptScore W2079905203C178790620 @default.
- W2079905203 hasConceptScore W2079905203C179998833 @default.
- W2079905203 hasConceptScore W2079905203C185592680 @default.
- W2079905203 hasConceptScore W2079905203C198291218 @default.
- W2079905203 hasConceptScore W2079905203C2777399995 @default.
- W2079905203 hasConceptScore W2079905203C2780962900 @default.
- W2079905203 hasConceptScore W2079905203C28781525 @default.
- W2079905203 hasConceptScore W2079905203C43617362 @default.
- W2079905203 hasConceptScore W2079905203C51884965 @default.
- W2079905203 hasConceptScore W2079905203C55493867 @default.
- W2079905203 hasConceptScore W2079905203C64489805 @default.
- W2079905203 hasConceptScore W2079905203C81426234 @default.
- W2079905203 hasIssue "12" @default.
- W2079905203 hasLocation W20799052031 @default.
- W2079905203 hasLocation W20799052032 @default.
- W2079905203 hasOpenAccess W2079905203 @default.
- W2079905203 hasPrimaryLocation W20799052031 @default.
- W2079905203 hasRelatedWork W2047393402 @default.
- W2079905203 hasRelatedWork W2352415262 @default.
- W2079905203 hasRelatedWork W2354636330 @default.
- W2079905203 hasRelatedWork W2511149316 @default.
- W2079905203 hasRelatedWork W2985688682 @default.
- W2079905203 hasRelatedWork W3194477646 @default.
- W2079905203 hasRelatedWork W4285284888 @default.
- W2079905203 hasRelatedWork W4317241529 @default.
- W2079905203 hasRelatedWork W4386385560 @default.
- W2079905203 hasRelatedWork W3198186945 @default.
- W2079905203 hasVolume "52" @default.
- W2079905203 isParatext "false" @default.
- W2079905203 isRetracted "false" @default.
- W2079905203 magId "2079905203" @default.
- W2079905203 workType "article" @default.