Journal
FOOD CHEMISTRY
Volume 186, Issue -, Pages 123-132Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2015.03.068
Keywords
Artemisia selengensis Turcz; HPLC-QTOF-MS2; Antioxidant activity; Polyphenols
Funding
- National Natural Science Foundation of China (NSFC) [21276118]
- National High Technology Research and Development Program of China [2013AA102205]
- Freedom explore Program of State Key Laboratory of Food Science and Technology of Nanchang University [SKLF-ZZB-201310]
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This study aimed to evaluate the antioxidant potential of Artemisia selengensis Turcz (AST) leaves, a byproduct when processing AST stalk, and identify the antioxidant constituents by using HPLC-QTOF-MS2. The total phenolics content (TPC), total flavonoids content (TFC) and antioxidant abilities of fractions resulted from the successively partition of chloroform, ethyl acetate and n-butanol were compared. Ethyl acetate fraction (EAF) exhibited the highest TFC (65.44 mg QuE/g fraction), n-butanol fraction (nBuF) showed the highest TPC (384.78 mg GAE/g fraction) and the best DPPH. scavenging ability, ABTS(+) scavenging ability and reducing power. Totally, 57 compounds were identified or tentatively identified in nBuF and EAF, 40 of them were reported in AST for the first time. The major constituents in EAF were flavonoids, and the major constituents in nBuF were phenolic acids and organic acids. Thus, AST leaves might be a potential low-cost resource of natural antioxidants. (C) 2015 Elsevier Ltd. All rights reserved.
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