Application of flow cytometry to wine microorganisms.

Area of Science:

• Food Microbiology
• Analytical Chemistry
• Biotechnology

Background:

• Flow cytometry (FCM) is a versatile technique for detecting and enumerating microbial populations in food and during processing.
• It provides insights into cell physiological states and allows quantification within mixed cultures using fluorescent dyes and probes.
• FCM applications have significantly expanded in wine microbiology over the past decade for analyzing fermentation processes and spoilage.

Purpose of the Study:

• To review the principles and applications of flow cytometry in wine microbiology.
• To detail methods for enumerating wine microorganisms, including species-specific yeast and bacteria identification.
• To explore fluorescent dyes and future techniques applicable to wine microbial studies.

Main Methods:

• Description of fundamental flow cytometry principles.
• Revision of enumeration techniques for wine microorganisms using FCM.
• Discussion of fluorescent dyes for cell analysis and potential future methodologies.

Main Results:

• FCM enables accurate quantification of microbial populations in wine, including pathogens and spoilage organisms.
• Specific fluorescent dyes and probes facilitate species-level identification of yeasts and bacteria.
• The review highlights the advantages of FCM for monitoring alcoholic and malolactic fermentations.

Conclusions:

• Flow cytometry is a powerful tool for comprehensive microbial analysis in the wine industry.
• It aids in understanding microbial dynamics during fermentation and identifying spoilage agents.
• FCM offers significant advantages for quality control and process optimization in winemaking.