Étude de la fonctionnalité d’hydrolysats protéiques d’insectes générés par le couplage de l’hydrolyse enzymatique et des hautes pressions hydrostatiques et de l’acceptabilité d’un ingrédient d’insectes auprès de cuisiniers novateurs

Authors: Dion-Poulin, Alexandra
Advisor: Turgeon, Sylvie; Doyen, Alain
Abstract: Interest in Entomophagy increases due to several environmental and nutritional benefits, but the social acceptability of this practice is a major obstacle in Western societies. Studies have shown that incorporating insect as an ingredient rather than whole insects promotes consumer acceptability. As a result of their poor functionality, insect meals arecommonly used as a filler agent. Enzymatic hydrolysis is a widely used method to modify and improve the functionality of various proteins, but the effectiveness of this method can be enhanced by using high hydrostatic pressures (HHP) as a pre-treatment. In this project, the functionality of insect meals and protein hydrolysates prepared from meals that were pretreated or not prior enzymatic hydrolysis by pressurization has been determined. The solubility and oil binding capacity were enhanced by this process in contrast to water binding capacity as well as foaming and gelling properties. Viscosity and emulsifying property were slightly increased comparatively to insect meal. However, their different functionalities from those of insect meals could facilitate their acceptability. Specifically, it is acknowledged thata positive consumption experience promotes the entomophagy acceptability especially whenchefs are included in the process. For this project a qualitative study based a priori on Roger’sdiffusion of innovation theory was also conducted to explore the perceptions of innovative chefs on the use of insect ingredients. All participants had a positive opinion of entomophagy and the majority was ready to use it. Understanding these perceptions will increase the use of insect ingredients in the gastronomy and eventually social acceptability.
Document Type: Mémoire de maîtrise
Issue Date: 2021
Open Access Date: 12 April 2021
Permalink: http://hdl.handle.net/20.500.11794/68780
Grantor: Université Laval
Collection:Thèses et mémoires

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