Erythrosine-mediated photodynamic inactivation of bacteria and yeast using green light-emitting diode light

En Sheng Ke, Sami Nazzal, Yu Hang Tseng, Chueh Pin Chen, Tsuimin Tsai

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Erythrosine, also known as FD&C Red No. 3, is a synthetic dye that has been used for food coloring and dental plaque detection. The objective of this study was to evaluate erythrosine as a viable photosensitizer in photodynamic inactivation (PDI) of bacteria and yeast. Cells were treated with erythrosine with or without acetic acid in the presence and absence of light. Erythrosine in the absence of light did not show any activity against the microorganisms. When treated with light, erythrosine was efficient in eradicating non-adherent (planktonic) Gram (+) bacteria and yeast. However, Gram (-) bacteria were less responsive to PDI. Addition of acetic acid was found to enhance the activity of erythrosine and significantly lower the survival of Gram (-) bacteria. This study demonstrated the potential applications of erythrosine in PDI and the potentiating effects of acetic acid.

Original languageEnglish
JournalJournal of Food and Drug Analysis
Volume20
Issue number4
DOIs
Publication statusPublished - Dec 2012

Fingerprint

Erythrosine
erythrosine
Methyl Green
inactivation
Yeasts
yeasts
Bacteria
Light
bacteria
Acetic Acid
acetic acid
food coloring
Dental Plaque
Photosensitizing Agents
green light
dyes
teeth
Coloring Agents
microorganisms
Food

Keywords

  • Acetic acid
  • Bacteria
  • Biofilm
  • Erythrosine
  • Photodynamic inactivation (PDI)
  • Yeast

ASJC Scopus subject areas

  • Food Science
  • Pharmacology

Cite this

Erythrosine-mediated photodynamic inactivation of bacteria and yeast using green light-emitting diode light. / Ke, En Sheng; Nazzal, Sami; Tseng, Yu Hang; Chen, Chueh Pin; Tsai, Tsuimin.

In: Journal of Food and Drug Analysis, Vol. 20, No. 4, 12.2012.

Research output: Contribution to journalArticle

Ke, En Sheng ; Nazzal, Sami ; Tseng, Yu Hang ; Chen, Chueh Pin ; Tsai, Tsuimin. / Erythrosine-mediated photodynamic inactivation of bacteria and yeast using green light-emitting diode light. In: Journal of Food and Drug Analysis. 2012 ; Vol. 20, No. 4.
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