Research project
36 | monthsONLINE_CO_DE

Multi-omics approach for on-line contaminants detection in industrial fermentations

Related toSpoke 03

Principal investigators
Fabio Dal Bello,Federica Volontè,Federica Biolcati

Other partecipantsWilliam Remelli, Cristian Magnabosco
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Project partners

Sacco

Coordinator

Task involved

Task 3.3.1.

The task includes evaluation of safety parameters in traditional and novel foods through the development of: a) chemical sensors and immunosensors for the selective detection of algal and plant toxins, and trace allergens; b) portable devices based on laser photoacoustic spectroscopy (LPAS) and other spectroscopy techniques; c) Ambient Desorption Ionisation methods with High-Resolution Mass Spectrometry (DESI-HRMS); e) use of rt-PCR and digital droplet-PCR to evaluate new and (re)-emerging foodborne pathogenic species; f) metabolomics and proteomics strategies coupled to pathway analysis to evaluate the effects of emerging and re-emerging contaminants; d) analytical techniques, i.e., spectroscopic and MS-based, to determine biogenic amines, pesticides, veterinary drug residues, mycotoxins and processing toxicants; and g) new Matrix-Reference Materials to be characterised for food safety parameters will be developed, including preparation of test-lots, their characterization and homogeneity and stability studies.

Project deliverables

D3.3.1.1.

Safety assessment of traditional and novel foods through targeted and untargeted methodologies (M36)

D3.3.1.3.

Report on rapid methods to detect foodborne pathogenic species and their metabolites (M36)

D3.3.1.4.

Report on the development and testing of new analytical techniques for targeted analysis of contaminants (M36)

D3.3.1.5.

Report on the development and testing of new rapid and direct analytical tools, chemical sensors, and portable devices (M36)

State of the art

Currently, microbial contaminations of industrial fermentations are investigated by coupling conventional microbiological (plate counting) and molecular approaches (16S rDNA sequencing). These approaches have several limitations, among which the need to possess appropriate microbiological methods allowing the growth of unwanted microorganisms and long waiting time before results are available. To increase both safety and sustainability of industrial fermentations, an “online” monitoring of contaminants needs to be developed.

The exponential development of high throughput and affordable gDNA sequencing techniques (e.g. Oxford Nanopore Technology), the protein-based bacteria identification (commercial MALDI MS/MS equipment) as well as the increase of the computational power of workstations indicate there is potential to develop innovative tools allowing the microbial contaminants detection. The aim of this project is to develop a fully automated multi-omics approach able to evaluate microbial contaminations within 24 hours after the sample collection.

Operation plan

The following steps will be performed: 

  • evaluation of LOD and LOQ of contamination through sequencing of adulterated gDNA standards and generation of the analytic pipeline backbone; 
  • debugging of the generated pipeline, evaluation of commercially available gDNA extraction and amplification platforms; 
  • evaluation of commercial MALDI MS/MS equipment suitable for bacteria identification and preparation of the laboratory infrastructure; 
  • acquisition of MALDI MS/MS, preliminary investigation on industrial samples and reciprocal validation of the generated data; 
  • alignment to internal QC standards, full automation of the system and validation.

Expected results

Development and validation of a fully automated multi-omics approach able to evaluate microbial contaminations within 24 hours from sample collection. Demonstration of industrial saving and reduction of industrial wastes/economic losses.