Journal
FOOD CHEMISTRY
Volume 101, Issue 4, Pages 1742-1747Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2006.01.032
Keywords
flavonoids; Citrus; chromatography; mass spectrometry
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Flavonoids are a group of polyphenolic compounds with health-related properties. Citrus fruits are rich in flavonoids and their extracts are being used as functional ingredients for several industrial products. A new high performance liquid chromatography technique with an UV photodiode-array detector was used to analyze flavonoids of an extract of Citrus species. To our knowledge this is the first study that reports isoquercitrin presence at a level of 77.3 mg/100 g in a sample made of Citrus fruits; four other flavonoids were quantified as rutin (326.59 mg/100 g), naringin (338.36 mg/100 g), quercetin (96.35 mg/100 g) and naringenin (2.35 mg/100 g). Identification was confirmed by a liquid chromatography mass spectrometer system. Method validation was achieved, providing an analytical technique that can be used to detect trace amounts of these compounds in Citrus extracts with an extremely rapid sample preparation. (c) 2006 Elsevier Ltd. All rights reserved.
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