Publication: Extraction, Characterization And Total Phenolic Content Of Local (Malaysian) Green Sweet Potato (Ipomoea Batatas) Leaves
No Thumbnail Available
Date
2014
Journal Title
Journal ISSN
Volume Title
Publisher
The International Journal of Science, Commerce and Humanities
Abstract
Sweet potato leaves (SPL) have been used by malay rural folks as traditional topical medication for eczematous skin conditions especially psoriasis. Local Chinese consume green SPL as vegetable. SPL contains high amount of polyphenols, a proven antioxidant and free radical scavengers. Local green SPL was extracted for hydrophilic and lipophilic compounds using water, ethanol and hexane as solvents. Water extraction method gave the best yield per kg fresh weight. Total phenolic content was 4.48 mg GAE/g dw SPL, slightly lower of Japan's and USA's averages. HPLC analysis revealed significant amount of caffeic acid as one of its major phenolic components beside the dominant chlorogenic acid.
Description
Keywords
sweet potato, polyphenols, HPLC, total phenolic content (TPC), caffeic acid, antioxidant