Solvent composition effects on efficiency of pressurized liquid extraction of bioactive isoflavonoids from Belamcanda chinensis rhizomes

Title
Solvent composition effects on efficiency of pressurized liquid extraction of bioactive isoflavonoids from Belamcanda chinensis rhizomes
Authors
이희주이은하정상훈이동언김철영
Keywords
Belamcanda chinensis; isoflavonoids; pressurized liquid extraction,; tectoridin; tectorigenin; thermal stability
Issue Date
2011-01
Publisher
Journal of liquid chromatography & related technologies
Citation
VOL 34, NO 2, 143-154
Abstract
A pressurized liquid extraction (PLE) technique was developed for the extraction of bioactive isoflavonoids including tectoridin (1), iridin (2), tectorigenin (3), iristectorigenin A (4), irisflorentine (5), and irigenin (6) fromBelamcanda chinensis using aqueous ethanol as the extraction solvent. The effects of various key factors of PLE, including solvent composition (0–100% ethanol in water), temperature (80–180℃) and extraction time (5–20 min), were evaluated with respect to the extraction efficiency. Only solvent compositions altered the extraction yields of isoflavonoids with 60% ethanol providing the best extraction efficiency. When compared with conventional extraction methods, such as reflux or sonication extraction, PLE resulted in higher extraction efficiency with shorter extraction time and lower solvent consumption.We also tested the thermal stability of tectoridin, isoflavonoid glycoside, at various temperatures (80–180℃) in 60% ethanol for a 20min extraction time to mimic conditions that could be encountered during PLE. Tectoridin was degraded to tectorigenin (aglycone) at temperatures over 150℃, therefore, care should be taken in the choice of temperature used for PLE.
URI
http://pubs.kist.re.kr/handle/201004/39612
ISSN
1082-6076
Appears in Collections:
KIST Publication > Article
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