A mounting medium for use in Indoor Air Quality spore-trap analyses

Area of Science:

• Environmental Science
• Microscopy
• Analytical Chemistry

Background:

• Indoor air quality (IAQ) monitoring is crucial for public health.
• Accurate identification of airborne fungal spores relies on effective sample preparation.
• Traditional mounting media may contain hazardous chemicals like phenol and have limitations in sample preservation and staining.

Purpose of the Study:

• To describe and evaluate a modified, phenol-free mounting medium, Lacto-Cotton Blue, for use with IAQ spore-trap samples.
• To assess the performance characteristics of Lacto-Cotton Blue regarding rehydration, staining, and ease of application.

Main Methods:

• Development of a modified Lacto-Cotton Blue mounting medium, omitting phenol.
• Application of the medium to IAQ spore-trap samples.
• Evaluation of the medium's properties including odor, rehydration capacity, staining quality, and ease of use.

Main Results:

• The modified Lacto-Cotton Blue medium is odorless and phenol-free.
• It demonstrates excellent rehydration properties for spore-trap samples.
• The medium provides delicate and clear staining, facilitating spore identification.
• Ease of application was noted as a significant advantage.

Conclusions:

• Lacto-Cotton Blue is a safe and effective alternative mounting medium for IAQ spore-trap analysis.
• Its properties enhance the quality and efficiency of airborne fungal spore examination.
• This modified medium contributes to improved indoor air quality assessment methodologies.