Inclusion of rapeseed meal in feed for Jamaican field crickets: effects on feed conversion, nutritional value, and metabolome

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F23%3A95095" target="_blank" >RIV/60460709:41210/23:95095 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22330/23:43928111

Result on the web

<a href="https://insecta-conference.com/wp-content/uploads/2023/09/INSECTA-2023-BOOK-of-ABSTRACT.pdf" target="_blank" >https://insecta-conference.com/wp-content/uploads/2023/09/INSECTA-2023-BOOK-of-ABSTRACT.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Inclusion of rapeseed meal in feed for Jamaican field crickets: effects on feed conversion, nutritional value, and metabolome

Original language description

Jamaican field crickets (Gryllus assimilis) belong among the most promising edible insect species for production as food or feed. To optimize the farming technology and exploit the potential of edible insects, the feed composition is crucial. Crickets are generally artificially reared on the dried substrates, when soybean is used as a major protein component. In this study, we aimed to evaluate the effect of replacement of soybean meal by rapeseed meal, the by-product from oil production. The crickets were provided by dried “chicken feed based” substrate, when 25, 50, 75 and 100% of soybean meal was replaced by rapeseed meal. Excluding fatty acid profiles, the nutritional analysis revealed no significant effect on the chemical composition of sampled insects. Similarly, no significant difference was observed for the feed conversion. Furthermore, UHPLC-HRMS/MS was applied for metabolomic analysis, when PCA and PLS-DA analysis showed that the insect samples were separated according to their feed composition. In combination with correlation analysis, possible markers of feed alteration in cricket biomass were found and identified based on the exact mass, isotopic profile, and fragmentation pattern of the respective ion. As expected, sinapine was identified as a marker of rapeseed. Although this compound might not be harmful, its bitterness can negatively affect the taste of the final product. Samples were also screened for the presence of antinutritive glucosinolate goitrin. This compound was not detected in any of the tested samples and, therefore, the transfer to the cricket tissues was not confirmed. In addition, the transfer of secondary metabolites typically occurring in soya (daidzein, genistein, saponins) was observed. The results can contribute to the optimization of edible insects farming and to the food industry’s circular economy functioning.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

21101 - Food and beverages

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů