Antioxidant and Antimicrobial Effects of Solvent Fractions from Smilax china L. Leaves
2014
Kim, J.Y., Kyungpook National University, Daegu, Republic of Korea | Seoung, G.U., Kyungpook National University, Daegu, Republic of Korea | Chung, S.K., Kyungpook National University, Daegu, Republic of Korea
To utilize Smilax china L. leaves as a natural preservatives, solvent fractions from crude methanol extract were prepared and investigated their antioxidant and antimicrobial activities against Staphylococcus aureus. Antioxidant activities were examined by 1,1-diphenyl-1-picrylhydrazyl radical scavenging and ferric ion reducing antioxidant power assays. Ethyl acetate fraction from Smilax china L. leaves exhibited the strongest antioxidant and antimicrobial activities among the fractions (P0.05), as well as the highest total phenolic and total flavonoid contents. Caffeic acid, ferulic acid, quercetin, and kaempferol contents in the ethyl acetate fraction from Smilax china L. leaves were determined by TLC and HPLC. In aqueous phase, as well as the n-butanol and n-hexane fractions, quercetin, ferulic acid, and kaempferol were detected in small amounts. Ferulic acid, which showed the highest content, is the major active compound from Smilax china L. leaves.
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