Convective Baking Characteristics and Effective Moisture Diffusivities of Yellow Mealworms

https://doi.org/10.22146/ajche.56358

Wei Hon Seah(1), Alecia Sze Mun Wong(2), Wei Qin Nie Naik(3), Chun Mun Tan(4), Choon Lai Chiang(5), Ching Lik Hii(6*)

(1) University of Nottingham Malaysia
(2) University of Nottingham Malaysia
(3) University of Nottingham Malaysia
(4) University of Nottingham Malaysia
(5) University of Nottingham Malaysia
(6) University of Nottingham Malaysia
(*) Corresponding Author

Abstract


Yellow mealworm is an alternative protein source studied by researchers to provide an alternative supply of protein to meet the growing demands of human consumption. In this research, convective baking of yellow mealworms at 80°C, 100°C, and 120°C was carried out to study the baking kinetics and product quality. Studies showed the typical falling trend of the moisture ratio curves, which are typical for most bioproducts that undergo hot air treatment. Mathematical modelling showed that the Page model gave a good prediction on the baking kinetics with high fitting accuracy (R2>0.99). Effective diffusivities were determined from 1.66 x 10-11 to 2.88 x 10-11 m2/s within the temperatures tested. The activation energy was estimated at 15.7 kJ/mol based on the Arrhenius equation. The final baked samples appeared darker in color because the browning reaction and reduction in bulk density and product length were observed in the range of 48-54% and 3.0-16.3%, respectively.


Keywords


Baking; Diffusivity; Mealworm; Modelling; Moisture

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DOI: https://doi.org/10.22146/ajche.56358

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ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.