2. Academic Validation
  3. Isolation and Purification of Bioactive Compounds from the Stem Bark of Jatropha podagrica

Isolation and Purification of Bioactive Compounds from the Stem Bark of Jatropha podagrica

  • Molecules. 2019 Mar 3;24(5):889. doi: 10.3390/molecules24050889.
Truong Ngoc Minh 1,  Tran Dang Xuan 2,  Hoang-Dung Tran 3,  Truong Mai Van 4,  Yusuf Andriana 5,  Tran Dang Khanh 6 7,  Nguyen Van Quan 8,  Ateeque Ahmad 9
Affiliations

Affiliations

  • 1 Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Higashi-Hiroshima 739-8529, Japan. minhtn689@gmail.com.
  • 2 Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Higashi-Hiroshima 739-8529, Japan. tdxuan@hiroshima-u.ac.jp.
  • 3 Department of Biotechnology, NTT Institute of Hi-Technology, Nguyen-Tat-Thanh University, 298A-300A Nguyen-Tat-Thanh Street, District 04, Ho chi Minh City 72820, Vietnam. thdung@ntt.edu.vn.
  • 4 Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Higashi-Hiroshima 739-8529, Japan. truongmaivan1991@gmail.com.
  • 5 Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Higashi-Hiroshima 739-8529, Japan. yusufandriana@yahoo.com.
  • 6 Agricultural Genetics Institute, Hanoi City 123000, Vietnam. tdkhanh@vaas.vn.
  • 7 Center for Expert, Vietnam National University of Agriculture, Hanoi 131000, Vietnam. tdkhanh@vaas.vn.
  • 8 Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Higashi-Hiroshima 739-8529, Japan. nguyenquan26@gmail.com.
  • 9 Chemical Engineering, CSIR, CIMAP, Kukrail Picnic Spot Road, Lucknow 226016, India. ateeque97@gmail.com.
PMID: 30832436 DOI: 10.3390/molecules24050889
Abstract

This paper reports the successive isolation and purification of bioactive compounds from the stem bark of Jatropha podagrica, a widely known medicinal plant. The ethyl acetate extract of the stem bark exhibited the strongest antioxidant activity assessed by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging, and ferric reducing antioxidant power (FRAP) assays (IC50 = 46.7, 66.0, and 492.6, respectively). By column chromatography (CC) with elution of hexane and ethyl acetate at 8:2, 7:3, and 6:4 ratios, the isolation of this active extract yielded five fractions (C1⁻C5). Chemical structures of the constituents included in C1⁻C5 were elucidated by gas chromatography-mass spectrometry (GC-MS), electrospray ionization-mass spectrometry (ESI-MS), and nuclear magnetic resonance (NMR) and resolved as methyl gallate (C1, C2, C3, C4), gallic acid (C1, C2), fraxetin (C2, C3, C4, C5), and tomentin (C3). Mixture C2 (IC50 DPPH and ABTS = 2.5 µg/mL) and C3 (IC50 FRAP = 381 µg/mL) showed the highest antioxidant properties. Among the isolated fractions, C4 was the most potential agent in growth inhibition of six Bacterial strains including Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Listeria monocytogenes, Bacillus subtilis, and Proteus mirabilis (MIC = 5, 20, 30, 20, 25, and 20 mg/mL, respectively). All identified constituents exerted an inhibitory activity on the growth of Lactuca sativa, of which the mixture C3 performed the maximal inhibition on shoot (IC50 = 49.4 µg/mL) and root (IC50 = 47.1 µg/mL) growth. Findings of this study suggest that gallic acid, methyl gallate, fraxetin, and tomentin isolated from J. podagrica possessed antioxidant, Antibacterial, and growth inhibitory potentials.

Keywords

Jatropha podagrica; allelopathic activity; antibacterial; antioxidant; fraxetin; gallic acid; methyl gallate; stem bark; tomentin.

Figures
Products