The nitrogen-to-protein conversion factor of two cricket species - Acheta domesticus and Gryllus bimaculatus
| Autor: | Marja Raatikainen, Helena Pastell, Annikki Welling, Tiina Ritvanen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
amino acids
biology musculoskeletal neural and ocular physiology Gryllus bimaculatus lcsh:S chemistry.chemical_element Zoology novel foods biology.organism_classification lcsh:S1-972 Nitrogen lcsh:Agriculture body regions chemistry protein analysis Cricket Acheta Research notes lcsh:Agriculture (General) insects human activities reproductive and urinary physiology psychological phenomena and processes Food Science |
| Zdroj: | Agricultural and Food Science Agricultural and Food Science, Vol 29, Iss 1 (2020) |
| ISSN: | 1795-1895 1459-6067 |
| DOI: | 10.23986/afsci.89101 |
| Popis: | The Kjeldahl method is the most utilized method for total protein content analysis in food. Using the universal nitrogen-to-protein conversion factor of 6.25, the protein content of insects is likely to be overestimated due to their chitin content. We have calculated nitrogen-to-protein conversion factors for two crickets, house cricket (Acheta domesticus) and field cricket (Gryllus bimaculatus), which are used for food and feed in Europe. By analyzing their nitrogen and amino acid content we were able to show that a conversion factor of 5.09 could be used for house cricket and 5.00 for field cricket in protein content calculation. Based on these results with a reservation about slight variation in farming conditions, we suggest a nitrogen conversion factor of 5.0 for both crickets. |
| Databáze: | OpenAIRE |
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