Tasting the differences: Microbiota analysis of different insect-based novel food

Area of Science:

• Microbiology
• Food Science
• Genomics

Background:

• Edible insect consumption is rising in Western countries, increasing the need to understand insect microbiota in food products.
• Current knowledge gaps exist regarding the microbial ecosystems associated with insect-based foods.
• Ensuring traceability, quality, and safety of edible insects is crucial for both producers and consumers.

Purpose of the Study:

• To investigate the microbiota composition of commercially available insect-based food products.
• To analyze microbiota variability across different insect species (A. domesticus, T. molitor, A. diaperinus), raw materials, and processed items.
• To assess the utility of High-Throughput DNA Sequencing (HTS) for food traceability and quality control in insect-based products.

Main Methods:

• Application of High-Throughput DNA Sequencing (HTS) techniques to analyze insect-based food products.
• Utilized bioinformatic analysis to study microbiota composition and variability.
• Examined commercial raw materials and processed food items from various e-commerce sources.

Main Results:

• Microbiota profiles allowed samples to cluster according to insect species.
• A core microbiota, characterized by a few prevalent bacteria, was identified for each insect type.
• This microbial signature remained consistent despite variations in processing, rearing conditions, and companies.

Conclusions:

• HTS analysis is a valuable tool for characterizing insect-based food products.
• The identified microbial signatures support food traceability and quality control.
• Distinct microbial profiles can differentiate insect species in commercial food products.