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Molecules 2010, 15(11), 7933-7945; doi:10.3390/molecules15117933

Flavonoids from Halostachys caspica and Their Antimicrobial and Antioxidant Activities

1
College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
2
College of Science, China Agricultural University, Beijing 100193, China
3
College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
*
Author to whom correspondence should be addressed.
Received: 11 October 2010 / Revised: 2 November 2010 / Accepted: 4 November 2010 / Published: 5 November 2010
(This article belongs to the Special Issue Phenolics and Polyphenolics)
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Abstract

Seven flavonoids have been isolated from the aerial parts of Halostachys caspica C. A. Mey. (Chenopodiaceae) for the first time. By means of physicochemical and spectrometric analysis, they were identified as luteolin (1), chrysin (2), chrysin 7-O-β-D-glucopyranoside (3), quercetin (4), quercetin 3-O-β-D-glucopyranoside (5), isorhamentin-3-O-β-D-glucopyranoside (6), and isorhamentin-3-O-β-D-rutinoside (7). All flavonoids were evaluated to show a broad antimicrobial spectrum of activity on microorganisms including seven bacterial and one fungal species as well as pronounced antioxidant activity. Among them, the aglycones with relatively low polarity had stronger bioactivity than their glycosides. The results suggested that the isolated flavonoids could be used for future development of antimicrobial and antioxidant agents, and also provided additional data for supporting the use of H. caspica as forage.
Keywords: Chenopodiaceae; Halostachys caspica; flavonoids; antimicrobial activity; antioxidant activity Chenopodiaceae; Halostachys caspica; flavonoids; antimicrobial activity; antioxidant activity
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Liu, H.; Mou, Y.; Zhao, J.; Wang, J.; Zhou, L.; Wang, M.; Wang, D.; Han, J.; Yu, Z.; Yang, F. Flavonoids from Halostachys caspica and Their Antimicrobial and Antioxidant Activities. Molecules 2010, 15, 7933-7945.

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