Use of insects for food and feed : scientific overview of the present knowledge on insect rearing, use of residual streams as substrates, and safety aspects

,; Hoek - van den Hil, E.F.; ,; ,; ,; ,; ,; ,; ,; ,; ,; Antonis, A.F.G.; Brouwer, M.S.M.; Bruins, M.E.; Dame, M.A.; van Groenestijn, J.W.; Haenen, O.L.M.; Hoffmans, Y.; Meijer, N.P.; Veldkamp, T.; Vernooij, A.G.; Appel, M.J.

doi:10.18174/571273

Cited by 1 publication

(1 citation statement)

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“…Since, in Western societies, there is a wish to produce insects more circularly and sustainably, using new leftover streams as a substrate, like out-of-date supermarket waste, kitchen waste, chicken manure, and dried category III slaughter waste, is currently being explored. Although these leftover streams are not yet accepted, as a substrate to grow insects on, this has become even more relevant, and those safety risk assessments are in progress, such as the project SAFE INSECTS, led by Wageningen Food Safety Research of Wageningen University and Research, the Netherlands [ 55 ].…”

Section: Discussionmentioning

confidence: 99%

Molecular Characterization of Serratia marcescens Strain Isolated from Yellow Mealworms, Tenebrio molitor, in The Netherlands

Bello Gonzalez,

van Gelderen,

Harders

et al. 2023

Insects

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Insect culture has developed rapidly worldwide; it faces important security and safety control issues, including animal infections and disease development. In the Netherlands, in 2021, a ~30% mortality of mealworms, Tenebrio molitor, occurred at one farm, where over-humid sites in the substrate were observed. Bacterial cultures from both the external and internal partsof fry and larger mealworms were identified by MALDI-TOF to predominantly Serratia marcescens, Staphylococcus xylosus and Staphylococus saprofyticus. Due to the important role of S. marcescens as a potential zoonotic bacterium, we performed a molecular characterization of the isolated strain. Genomic analysis showed a multidrug-resistant S. marcescens isolate carrying a tet (41), aac (6′)-Ic, and blaSST-1 chromosomal class C beta-lactamase-resistantgenes, all located on the chromosome. Additionally, several virulence genes were identified. The phylogenetic tree revealed that the S. marcescens strain from this study was similar to other S. marcescens strains from different ecological niches. Although the entomopathogenic activity was not confirmed, this case demonstrates that T. molitor can act as a reservoir and as an alternative path for exposing clinically important antibiotic-resistant bacteria that can affect animals and humans. It underlines the need to keep management factors optimal, before insects and their products enter the feed and food chain.

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Section: Discussionmentioning

confidence: 99%