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Analytical characterization of antho...

Barnes, Jeremy S.,

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Analytical characterization of anthocyanins from natural products by reverse-phase liquid chromatography-photodiode array-electrospray ionization-ion trap-time of flight mass spectrometry /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Analytical characterization of anthocyanins from natural products by reverse-phase liquid chromatography-photodiode array-electrospray ionization-ion trap-time of flight mass spectrometry // Jeremy S Barnes.
作者:	Barnes, Jeremy S.,
面頁冊數:	1 electronic resource (97 pages)
附註:	Source: Masters Abstracts International, Volume: 72-08.
Contained By:	Masters Abstracts International72-08.
標題:	Analytical chemistry. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1488226
ISBN:	9781124439891

Analytical characterization of anthocyanins from natural products by reverse-phase liquid chromatography-photodiode array-electrospray ionization-ion trap-time of flight mass spectrometry /
Barnes, Jeremy S.,

Analytical characterization of anthocyanins from natural products by reverse-phase liquid chromatography-photodiode array-electrospray ionization-ion trap-time of flight mass spectrometry /Jeremy S Barnes. - 1 electronic resource (97 pages)

Source: Masters Abstracts International, Volume: 72-08.

Anthocyanins are known to be one of the most powerful phytochemical antioxidant and believed to have a positive influence on a variety of health conditions. Numerous studies continue on these compounds that are readily found in most plants. Red hybrid-tea rose petals and wild blueberries were used as model systems for optimizing the extraction and identification process of anthocyanins in plant material using high performance liquid chromatography (HPLC) and mass spectrometry (MS) without the use of authentic standards. A number of extraction parameters, including sample homogenization, solvent selection and acid type and amount, were varied to examine the effects on anthocyanin extraction from blueberries. Individual anthocyanins within the extract solution were separated by reverse phase HPLC and identified by elution order and tandem mass spectrometry. Further definitive identification of anthocyanins from other isobaric flavonoid species was demonstrated by multi-dimensional tandem mass spectrometry fragmentation (MSn). Cyanidin-3,5-diglucoside and pelargonidin-3,5-diglucoside were isolated from an extract of freeze dried rose petals via fractionation. These compounds were then structurally-characterized by multi-stage mass spectrometry fragmentation (up to MS 6). Variations in the collision energy of the ion trap resulted in cleavage of the glycosides at the MS/MS, and MS3 stages; fragmentation of the anthocyanidin was recorded at the MS4 stage and beyond. Computational modeling was used to investigate the cross-ring cleavage fragment ions of cyanidin.

English

ISBN: 9781124439891Subjects--Topical Terms:

3168300
Analytical chemistry.
Subjects--Index Terms:

Anthocyanins

Analytical characterization of anthocyanins from natural products by reverse-phase liquid chromatography-photodiode array-electrospray ionization-ion trap-time of flight mass spectrometry /
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520 $a Anthocyanins are known to be one of the most powerful phytochemical antioxidant and believed to have a positive influence on a variety of health conditions. Numerous studies continue on these compounds that are readily found in most plants. Red hybrid-tea rose petals and wild blueberries were used as model systems for optimizing the extraction and identification process of anthocyanins in plant material using high performance liquid chromatography (HPLC) and mass spectrometry (MS) without the use of authentic standards. A number of extraction parameters, including sample homogenization, solvent selection and acid type and amount, were varied to examine the effects on anthocyanin extraction from blueberries. Individual anthocyanins within the extract solution were separated by reverse phase HPLC and identified by elution order and tandem mass spectrometry. Further definitive identification of anthocyanins from other isobaric flavonoid species was demonstrated by multi-dimensional tandem mass spectrometry fragmentation (MSn). Cyanidin-3,5-diglucoside and pelargonidin-3,5-diglucoside were isolated from an extract of freeze dried rose petals via fractionation. These compounds were then structurally-characterized by multi-stage mass spectrometry fragmentation (up to MS 6). Variations in the collision energy of the ion trap resulted in cleavage of the glycosides at the MS/MS, and MS3 stages; fragmentation of the anthocyanidin was recorded at the MS4 stage and beyond. Computational modeling was used to investigate the cross-ring cleavage fragment ions of cyanidin.
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650 4 $a Agricultural chemicals. $3 814915
653 $a Anthocyanins
653 $a Flavonoids
653 $a Higher order fragmentation
653 $a Ion traps
653 $a TOF-MS
690 $a 0486
690 $a 0473
710 2 $a The University of Texas at Arlington. $b Chemistry & Biochemistry. $e degree granting institution. $3 3829229
720 1 $a Schug, Kevin A. $e degree supervisor.
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