Antioxidative, tyrosinase inhibiting and antibacterial activities of leaf extracts from medicinal ferns

How Yee Lai, Yau Yan Lim, Shiau Pin Tan

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Leaf extracts of five medicinal ferns, Acrostichum aureum L. (Pteridaceae), Asplenium nidus L. (Aspleniaceae), Blechnum orientate L. (Blechnaceae), Cibotium barometz (L.) J. Sm. (Cyatheaceae) and Dicranopteris linearis (Burm.) underwood var. linearis (Gleicheniaceae), were investigated for their total phenolic content (TPC), and antioxidative, tyrosinase inhibiting and antibacterial activities. The antioxidative activity was measured by assays for radical scavenging against 1,1-diphenyl-2-picrylhydrazyl (DPPH), ferric ion reducing power (FRP), beta-carotene bleaching (BCB) and ferrous ion chelating (FIC). The results revealed B. orientate to possess the highest amount of total polyphenols and strongest potential as a natural antioxidative, tyrosinase inhibiting and antibacterial agent as demonstrated by its strong activities in all related bioassays. The other ferns with antioxidative potential were C. barometz and D. linearis. Except for A. aureum, all ferns showed antibacterial activity which may justify their usage in traditional medicines.

Original languageEnglish
Pages (from-to)1362-1366
Number of pages5
JournalBioscience, Biotechnology and Biochemistry
Volume73
Issue number6
DOIs
Publication statusPublished - 2009
Externally publishedYes

Keywords

  • Antimicrobial
  • Antioxidative
  • Fern
  • Polyphenol
  • Tyrosinase inhibition

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