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A cost-effective carbohydrate fermentation test for yeast using microtitre plate.

A Kali1, S Srirangaraj, P M V Charles

  • 1Department of Microbiology, Mahatma Gandhi Medical College and Research Institute, Pillaiyarkuppam, Pondicherry, India.

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Summary

A modified carbohydrate fermentation test using microtitre plates offers a faster and more cost-effective method for identifying yeast isolates. This improved technique maintains high accuracy, reducing processing time significantly.

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Area of Science:

  • Microbiology
  • Biotechnology

Background:

  • Carbohydrate fermentation tests are crucial for bacterial and fungal speciation.
  • Conventional methods face limitations due to long incubation times, high costs, and procedural complexity.

Purpose of the Study:

  • To introduce a simplified carbohydrate fermentation technique utilizing microtitre plates.
  • To evaluate the efficacy and efficiency of the modified method for yeast identification.

Main Methods:

  • A modified carbohydrate fermentation test was developed using microtitre plates.
  • Thirty-one yeast isolates were identified using the modified method and compared to the conventional approach.

Main Results:

  • The modified microtitre plate method demonstrated 85.7% sensitivity and 100% specificity.
  • Positive reactions were observed in an average of 24 hours, significantly reducing the turn-around time.
  • The modified method proved to be more cost-effective than the conventional technique.

Conclusions:

  • The microtitre plate modification offers a simpler, faster, and more economical approach to carbohydrate fermentation testing for yeast identification.
  • This enhanced method provides reliable results comparable to conventional techniques, making it suitable for routine laboratory use.