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Justesen U
Negative atmospheric pressure chemical ionisation low-energy collision activation mass spectrometry for the characterisation of flavonoids in extracts of fresh herbs
Journal of Chromatography A 902(2) (2000)
369-379
|
/Variants 0/-b-D-GlcpA-(1-3')-Luteolin
/Variants 0/ is:
Ac-4)-
OR (exclusively)
Ac-3)- |
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Rosmarinus officinalis
(later renamed to: Salvia rosmarinus)
(NCBI TaxID 39367,
species name lookup)
Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
Organ / tissue: herb
NCBI PubMed ID: 11192169Publication DOI: 10.1016/s0021-9673(00)00861-xJournal NLM ID: 9318488Publisher: Amsterdam; New York: Elsevier
Correspondence: ulj
fdir.dk
Institutions: Institute of Food Research and Nutrition, Division of Nutrition, Danish Veterinary and Food Administration, Søborg, Denmark
The flavonoid composition of commonly eaten fresh herbs such as dill, oregano and parsley was analysed by combined LC, MS and low-energy collision induced dissociation (CID) MS-MS. Negative atmospheric pressure chemical ionisation (APCI) MS and MS-MS were used to provide molecular mass information and product-ion spectra of the glycosyl compounds. The most prominent fragment was found to arise from the aglycone ion, which provides molecular mass information about the glycosyl substituent and the aglycone. Product-ion spectra of the aglycone verified the identity by comparison with product-ion spectra of authentic standards. Methoxylated flavonoids provide characteristic fragmentation, i.e., loss of *CH3, which add to the usefulness of the method for identifying unknown flavonoids. Negative-mode APCI-MS is thus demonstrated to be a good alternative to the commonly employed positive mode operation.
mass spectrometry, flavonoids
Structure type: monomer
Location inside paper: p. 378, left column, paragraph 2
Compound class: glycoside, flavonoid glycoside
Contained glycoepitopes: IEDB_115136,IEDB_140630,IEDB_423153,IEDB_613439
Methods: CID-MS/MS, UV, extraction, CC, HPLC-MS, APCI-MS/MS
Related record ID(s): 66463
NCBI Taxonomy refs (TaxIDs): 39367
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There is only one chemically distinct structure:
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Justesen U
Negative atmospheric pressure chemical ionisation low-energy collision activation mass spectrometry for the characterisation of flavonoids in extracts of fresh herbs
Journal of Chromatography A 902(2) (2000)
369-379
|
b-D-Glcp-(1-3)-Subst6Me
Subst = quercetagetin = SMILES O{7}C1=CC2=C(C({3}C(O)=C(C3=CC={54}C(O){53}C(O)=C3)O2)=O){5}C(O)={6}C1O |
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Artemisia dracunculus
(NCBI TaxID 72341,
species name lookup)
Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
Organ / tissue: herb
NCBI PubMed ID: 11192169Publication DOI: 10.1016/s0021-9673(00)00861-xJournal NLM ID: 9318488Publisher: Amsterdam; New York: Elsevier
Correspondence: ulj
fdir.dk
Institutions: Institute of Food Research and Nutrition, Division of Nutrition, Danish Veterinary and Food Administration, Søborg, Denmark
The flavonoid composition of commonly eaten fresh herbs such as dill, oregano and parsley was analysed by combined LC, MS and low-energy collision induced dissociation (CID) MS-MS. Negative atmospheric pressure chemical ionisation (APCI) MS and MS-MS were used to provide molecular mass information and product-ion spectra of the glycosyl compounds. The most prominent fragment was found to arise from the aglycone ion, which provides molecular mass information about the glycosyl substituent and the aglycone. Product-ion spectra of the aglycone verified the identity by comparison with product-ion spectra of authentic standards. Methoxylated flavonoids provide characteristic fragmentation, i.e., loss of *CH3, which add to the usefulness of the method for identifying unknown flavonoids. Negative-mode APCI-MS is thus demonstrated to be a good alternative to the commonly employed positive mode operation.
mass spectrometry, flavonoids
Structure type: monomer ; 607 [M-H]-
Location inside paper: p. 378, right column, paragraph 2
Compound class: glycoside, flavonoid glycoside
Contained glycoepitopes: IEDB_142488,IEDB_146664,IEDB_983931,SB_192
Methods: CID-MS/MS, UV, extraction, CC, HPLC-MS, APCI-MS/MS
Related record ID(s): 66462
NCBI Taxonomy refs (TaxIDs): 72341
Show glycosyltransferases
There is only one chemically distinct structure:
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