Is edible insect as a novel food digestible?

Authors

  • Martin Adámek Brno University of Technology, Faculty of Electrical Engineering and Communication, Department of Microelectronics, Technická 3058/10, 616 00 Brno, Czech Republic, Tel.: +420541146136 https://orcid.org/0000-0002-8668-863X
  • Jiří­ Mlček Tomas Bata University in Zlin, Faculty of Technology, Department of Food Analysis and Chemistry, Vavreckova 275, 760 01 Zlin, Czech Republic, Tel.: +420576033030 https://orcid.org/0000-0002-5753-8560
  • Anna Adámková Tomas Bata University in Zlin, Faculty of Technology, Department of Food Analysis and Chemistry, Vavreckova 275, 760 01 Zlin, Czech Republic, Tel.: +420576031592
  • Marie Borkovcová Tomas Bata University in Zlin, Faculty of Technology, Department of Food Analysis and Chemistry, Vavreckova 275, 760 01 Zlin, Czech Republic, Tel.: +420 545 133 356
  • Martina Bednářová Mendel University in Brno, Department of Information Technology, Zemědělská 1, 613 00 Brno, Czech Republic, Tel.: +420545132736
  • Tünde Jurí­ková Constantine the Philosopher University in Nitra, Faculty of Central European Studies, Institute for teacher training, 949 74 Nitra, Slovakia, Tel.: +421376408855 https://orcid.org/0000-0002-8286-8262
  • Zuzana Musilová Tomas Bata University in Zlin, Faculty of Technology, Department of Food Analysis and Chemistry, Vavreckova 275, 760 01 Zlin, Czech Republic
  • Oldřich Faměra Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Department of Food Science, Kamýcká 129, 165 21 Praha 6 ”“ Suchdol, Czech Republic, Tel.: +420224383508

DOI:

https://doi.org/10.5219/1088

Keywords:

digestibility, mealworm, culinary treatments, enzymes, nitrogenous substances

Abstract

This work deals with the digestibility of a selected species of edible insect - mealworm (larvae) as novel food in dependency on its culinary treatment. The aim of this work was to find suitable thermic culinary treatment of mealworm larvae considering its optimum digestibility by human. The digestibility of materials from whole insect and extracted nitrogenous substances was determined using three different culinary treatments - without culinary treatment (freshly killed), dried insect and roasted insect. The digestibility was determined by gravimetric in vitro method using pepsin and pancreatin enzymes and their combination. The total nitrogen content of the insect samples was determined by the Kjeldahl method. The digestibility of the whole homogenized larvae using the combination of pepsin and pancreatin enzymes, thus simulating human digestion in-vitro, ranged from 81% for roasted specimens to 91.5% for culinary unprocessed insect. Similarly, the digestibility of nitrogenous substances of homogenized insect samples using this combination of enzymes ranged from 24.2% for roasted specimens to 80.2% for culinary unprocessed samples. The work showed the dependence of the digestibility of the mealworm larvae on the culinary treatment - the increasing heat load of the sample reduced the digestibility. Furthermore, it proved the effect of the digestive enzyme on the digestibility of the insect sample.

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Published

2019-06-28

How to Cite

Adámek, M. ., Mlček, J. ., Adámková, A. ., Borkovcová, M. ., Bednářová, M. ., Jurí­ková, T. ., Musilová, Z. ., & Faměra, O. (2019). Is edible insect as a novel food digestible?. Potravinarstvo Slovak Journal of Food Sciences, 13(1), 470–476. https://doi.org/10.5219/1088

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