Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
권호 표지

Fractionation of Banaba Leaves Extract (Lagerstroemia speciosa L. Pers) and its Antioxidant Activity

바나바(Lagerstroemia speciosa L. Pars.) 잎 추출물의 분획 및 그들의 항산화 특성

Hwang, Ho-Sung;Lee, Yun-Kyung;Lee, Kwang-Geun
황호성;이윤경;이광근

  • Published : 20060000
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Abstract

Dried Banaba Leaf (Lagerstroemia speciosa L. Pers.) has been traditionally used for treatment of diabetes as a folk medicine in the Philippines. Dried Banaba leaf contains corosolic acid which has a function as like insulin does. In this study, an antioxidant activity of Banaba leaves was measured. Dried Banaba leaves were pulverized and extracted by water, methanol, ethanol at above 80°C for 90 minutes. The extracts were tested for their antioxidant activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging activity assay. The ethanol extract showed the highest antioxidant activity. The ethanol extract of Banaba leaf was fractionated using XA-2 resin and various solvents according to polarity. The antioxidant activity of each fraction was measured by lipidlMA (malonaldehyde) assay. Fraction I (the most polar) displayed the highest antioxidant activity.

Keywords

References

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