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Open AccessArticle

Impact of Fermentation and Phytase Treatment of Pea-Oat Protein Blend on Physicochemical, Sensory, and Nutritional Properties of Extruded Meat Analogs

Center of Food and Fermentation Technologies, Akadeemia tee 15a, 12618 Tallinn, Estonia
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Foods 2020, 9(8), 1059; https://doi.org/10.3390/foods9081059
Received: 10 July 2020 / Revised: 31 July 2020 / Accepted: 3 August 2020 / Published: 5 August 2020
Plant materials that are used for the production of extruded meat analogs are often nutritionally incomplete and also contain antinutrients, thus there is a need to explore alternative plant proteins and pre-treatments. This study demonstrates application of phytase and fermentation to a pea-oat protein blend with a good essential amino acid profile and subsequent texturization using extrusion cooking. Enzymatic treatment reduced the content of antinutrient phytic acid by 32%. Extrusion also degraded phytic acid by up to 18%, but the effect depended on the material. Differences in physicochemical, sensorial, and textural properties between untreated and phytase-treated extruded meat analogs were small. In contrast, fermented material was more difficult to texturize due to degradation of macromolecules; physicochemical and textural properties of extrudates were markedly different; sensory analysis showed enhancement of flavor, but also detected an increase in some unwanted taste attributes (bitterness, cereal and off-taste). Phytic acid was not degraded by fermentation. Analysis of volatile compounds showed extrusion eliminated volatiles from the raw material but introduced Maillard reaction products. Overall, phytase treatment and fermentation demonstrated the potential for application in extruded meat analogs but also highlighted the necessity of optimization of process conditions. View Full-Text
Keywords: meat analog; extrusion; fermentation; phytic acid meat analog; extrusion; fermentation; phytic acid
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MDPI and ACS Style

Kaleda, A.; Talvistu, K.; Tamm, M.; Viirma, M.; Rosend, J.; Tanilas, K.; Kriisa, M.; Part, N.; Tammik, M.-L. Impact of Fermentation and Phytase Treatment of Pea-Oat Protein Blend on Physicochemical, Sensory, and Nutritional Properties of Extruded Meat Analogs. Foods 2020, 9, 1059. https://doi.org/10.3390/foods9081059

AMA Style

Kaleda A, Talvistu K, Tamm M, Viirma M, Rosend J, Tanilas K, Kriisa M, Part N, Tammik M-L. Impact of Fermentation and Phytase Treatment of Pea-Oat Protein Blend on Physicochemical, Sensory, and Nutritional Properties of Extruded Meat Analogs. Foods. 2020; 9(8):1059. https://doi.org/10.3390/foods9081059

Chicago/Turabian Style

Kaleda, Aleksei; Talvistu, Karel; Tamm, Martti; Viirma, Maret; Rosend, Julia; Tanilas, Kristel; Kriisa, Marie; Part, Natalja; Tammik, Mari-Liis. 2020. "Impact of Fermentation and Phytase Treatment of Pea-Oat Protein Blend on Physicochemical, Sensory, and Nutritional Properties of Extruded Meat Analogs" Foods 9, no. 8: 1059. https://doi.org/10.3390/foods9081059

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