Journal
NATURAL PRODUCT RESEARCH
Volume 24, Issue 18, Pages 1771-1782Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786411003594058
Keywords
Smallanthus sonchifolius; Asteraceae; yacon; ent-kaurenoic acid; hypoglycaemic
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Funding
- College Research Fund, College of Science
- University Research Coordination Office of De La Salle University-Manila
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Hypoglycaemic activity was observed in normoglycaemic mice orally administered with the aqueous Smallanthus sonchifolius leaf tea extract, alloxan-induced diabetic mice orally administered with ent-kaurenoic acid (1), and normoglycaemic mice intraperitoneally administered with 1 from S. sonchifolius leaves. A single dose administration of 50 mg kg-1 BW yacon leaf tea extract demonstrated immediate but relatively short hypoglycaemic activity, with significant effects observed during 1-2 h. Similarly, administration with 100 mg kg-1 BW yacon leaf tea extract obtained by heavy stirring in hot water demonstrated a more potent activity compared to the positive control at 1.5-2.0 h. Oral administration of 1 did not affect the blood glucose level of the alloxan-induced diabetic mice, but a single intraperitonial injection of 10 mg kg-1 BW in normoglycaemic mice had consistent percent blood glucose reduction persisting from 1 to 2 h observation periods.
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