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You searched for: Journal Journal of agricultural and food chemistry Remove constraint Journal: Journal of agricultural and food chemistry Publication Year 2004 Remove constraint Publication Year: 2004 Source 2004 v.52 no.13 Remove constraint Source: 2004 v.52 no.13 Subject mass spectrometry Remove constraint Subject: mass spectrometry Subject high performance liquid chromatography Remove constraint Subject: high performance liquid chromatography
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1. Identification and quantification of caffeoylquinic acids and flavonoids from artichoke (Cynara scolymus L.) heads, juice, and pomace by HPLC-DAD-ESI/MS(n)

Author:
Schutz, K.; Kammerer, D.; Carle, R.; Schieber, A.
Source:
Journal of agricultural and food chemistry 2004 v.52 no.13 pp. 4090-4096
ISSN:
0021-8561
Subject:
vegetable juices; pomace; artichokes; ionization; phenolic acids; high performance liquid chromatography; detectors; food composition; flavonoids; mass spectrometry; detection
Abstract:
... A method for the identification and quantification of phenolic compounds from artichoke (Cynara scolymus L.) heads, juice, and pomace by HPLC with diode array and mass spectrometric detection was developed. Among the 22 major compounds, 11 caffeoylquinic acids and 8 flavonoids were detected. Quantification of individual compounds was carried out by external calibration. Apigenin 7-O-glucuronide wa ...
DOI:
10.1021/jf049625x

2. Structural investigations of flavonol glycosides from sea buckthorn (Hippophae rhamnoides) pomace by NMR spectroscopy and HPLC-ESI-MS(n)

Author:
Rosch, D.; Krumbein, A.; Mugge, C.; Kroh, L.W.
Source:
Journal of agricultural and food chemistry 2004 v.52 no.13 pp. 4039-4046
ISSN:
0021-8561
Subject:
Hippophae rhamnoides; small fruits; pomace; fruit juices; flavonols; glycosides; nuclear magnetic resonance spectroscopy; high performance liquid chromatography; ionization; mass spectrometry; fruit composition
Abstract:
... Four flavonol glycosides were isolated from an extract of sea buckthorn pomace (Hippophae rhamnoides) by Sephadex LH-20 gel chromatography and semipreparative HPLC. Their structures were elucidated by hydrolysis studies, ESI-MS(n), UV, and 1H and 13C NMR spectroscopy. The occurrence of the major flavonol glycoside kaempferol 3-O-β-sophoroside-7-O-α-rhamnoside in sea buckthorn is described here for ...
DOI:
10.1021/jf0306791