Environmental Science and Pollution Research

, Volume 11, Issue 1, pp 7–10

Determination of optimal water solubility of capsaicin for its usage as a non-toxic antifoulant

Research Article

DOI: 10.1065/espr2003.12.180

Cite this article as:
Turgut, C., Newby, B. & Cutright, T.J. Environ Sci & Pollut Res (2004) 11: 7. doi:10.1065/espr2003.12.180

Abstract

Background

Capsaicin, a non-toxic natural product antifoulant, is an attractive alternative to the currently used toxic metal-based antifoulants for protecting the submerged surfaces. The problem associated with conducting capsaicin experiments is its limited aqueous solubility.

Methods

A procedure was developed to obtain the maximum capsaicin concentration in water. Capsaicin was first dissolved in one of the three organic solvents, methanol, ethanol, and acetone. The organic solvent was replaced by gradually adding distilled water and evaporating the organic solvent.

Results

The best solvent for obtaining highest concentration of capsaicin in water was ethanol. A maximum capsaicin in water 6400 ppm was achieved by using 16 mg capsaicin dissolved in 0.8 ml ethanol followed with the addition of 2.5 ml distilled water in 0.2 ml increments and then slow evaporation of the solvent.

Conclusion

The concentration obtained using our approach is well above the threshold concentration of capsaicin in deterring the marine organism attachments.

Keywords

Antifoulantsbiocidescapsaicinnon-toxic antifoulantwater solubility

Copyright information

© Ecomed Publishers 2004

Authors and Affiliations

  • Cafer Turgut
    • 1
  • Bi-min Newby
    • 2
  • Teresa J. Cutright
    • 3
  1. 1.Adnan Menderes UniversityAydinTurkey
  2. 2.Department of Chemical EngineeringThe University of AkronAkronUSA
  3. 3.Department of Civil EngineeringThe University of AkronAkronUSA