@Article{phyton.2022.022576,
AUTHOR = {Yu Zai, Shaohua Liu},
TITLE = {Extraction, Antioxidant Activity and Identification of Flavonoids from Root Tubers of <i>Kosteletzkya virginica</i>},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {92},
YEAR = {2023},
NUMBER = {1},
PAGES = {225--236},
URL = {http://www.techscience.com/phyton/v92n1/49581},
ISSN = {1851-5657},
ABSTRACT = {<i>Kosteletzkya virginica</i> (<i>K. virginica</i>) is used for revegetation of salt-affected coastal tidal flats and as a raw material
of biodiesel. <i>K. virginica</i> root tuber, a biowaste with low economic value, is rich in bioactive compounds. This
study aimed to extract and identify flavonoids from <i>K. virginica</i> root tubers. The optimal extraction conditions
were 1/25 (w/v) solid/liquid ratio, 40% ethanol concentration at 40°C for 60 min. Under these conditions,
65.2 ± 3.7 mg/g total flavonoid content was extracted from the roots, which were collected from salinized soil
in late autumn of the third year. Antioxidant activity was evaluated through 1,1-diphenyl-2-picrylhydrazyl,
hydroxyl radical, and superoxide anion scavenging assays. The extracted flavonoids exhibited antioxidant activity
in a dose-dependent manner. Five flavonoids, glucoliquiritin apioside, licoisoflavone B, 5-methoxy-7,8-diprenyl-
flavone, 7,2′-dihydroxy-6,8-dimethyl-4′,5′-methylenedioxyflavan, and 5,7,4′-trihydroxy-3′-methoxy-6,8-di-Cmethylflavanone, were identified by ultra-performance liquid chromatography–tandem mass spectrometry.
Our results suggest that the flavonoids of <i>K. virginica</i> root tubers might be potent antioxidants and can be effectively applied as an ingredient in food and natural medicine.},
DOI = {10.32604/phyton.2022.022576}
}