Bio-sensing with butterfly wings: naturally occurring nano-structures for SERS-based malaria parasite detection

Phys Chem Chem Phys. 2015 Sep 7;17(33):21164-8. doi: 10.1039/c4cp04930f. Epub 2014 Dec 10.

Abstract

Surface enhanced Raman scattering (SERS) is a powerful tool with great potential to provide improved bio-sensing capabilities. The current 'gold-standard' method for diagnosis of malaria involves visual inspection of blood smears using light microscopy, which is time consuming and can prevent early diagnosis of the disease. We present a novel surface-enhanced Raman spectroscopy substrate based on gold-coated butterfly wings, which enabled detection of malarial hemozoin pigment within lysed blood samples containing 0.005% and 0.0005% infected red blood cells.

MeSH terms

  • Animals
  • Butterflies / physiology
  • Erythrocytes / parasitology
  • Gold / chemistry
  • Hemeproteins / analysis
  • Hemeproteins / chemistry
  • Humans
  • Malaria / diagnosis*
  • Malaria / parasitology
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Plasmodium / isolation & purification*
  • Plasmodium / metabolism
  • Spectrum Analysis, Raman*
  • Wings, Animal / chemistry*

Substances

  • Hemeproteins
  • hemozoin
  • Gold