Loading...
Thumbnail Image
Item

Strategy for the identification of micro-organisms producing food and feed products: Bacteria producing food enzymes as study case

Deckers, Marie
Heyndrickx, Marc
Deforce, Dieter
Citations
Altmetric:
Abstract

Recent European regulations require safety assessments of food enzymes (FE) before their commercialization. FE are mainly produced by micro-organisms, whose viable strains nor associated DNA can be present in the final products. Currently, no strategy targeting such impurities exists in enforcement laboratories. Therefore, a generic strategy of first line screening was developed to detect and identify, through PCR amplification and sequencing of the 16S-rRNA gene, the potential presence of FE producing bacteria in FE preparations. First, the specificity was verified using all microbial species reported to produce FE. Second, an in-house database, with 16S reference sequences from bacteria producing FE, was constructed for their fast identification through blast analysis. Third, the sensitivity was assessed on a spiked FE preparation. Finally, the applicability was verified using commercial FE preparations. Using straightforward PCR amplifications, Sanger sequencing and blast analysis, the proposed strategy was demonstrated to be convenient for implementation in enforcement laboratories.

Description
Date
2020-01-02
Journal Title
Journal ISSN
Volume Title
Publisher
Chapter title
Publication type
Peer reviewed scientific article
Research Projects
Organizational Units
Journal Issue
Keywords
16S-rRNA gene sequencing, bacteria, Food enzymes, identification, PCR technology, Producing organisms, SCREENING
Citation
Topic(s)
Related project
Embedded videos