Oil-in Water Vegetable Emulsions with Oat Bran as Meat Raw Material Replacers: Compositional, Technological and Structural Approach

Ana M Herrero; Esther Merino; Irene Muñoz-González; Claudia Ruiz-Capillas

doi:10.3390/foods12010040

Oil-in Water Vegetable Emulsions with Oat Bran as Meat Raw Material Replacers: Compositional, Technological and Structural Approach

Foods. 2022 Dec 22;12(1):40. doi: 10.3390/foods12010040.

Authors

Ana M Herrero¹, Esther Merino¹, Irene Muñoz-González¹, Claudia Ruiz-Capillas¹

Affiliation

¹ Institute of Food Science, Technology and Nutrition (CSIC), José Antonio Novais 10, 28040 Madrid, Spain.

Abstract

The unique composition and technological properties of some oat bran components (mainly protein and soluble fiber) and olive oil make them a good choice to form oil-in-water vegetable emulsions. The different concentrations of oat bran were studied to form olive oil-in water (O/W) emulsions to apply as a replacement for fat and meat. As a result, four O/W emulsions (OBE) were formulated with 10% (OBE10), 15% (OBE15), 20% (OEB20), and 30% (OBE30) oat bran concentrations and 40% olive oil, with the corresponding amount of water added for each O/W emulsion. Composition, technological properties (thermal stability, pH, texture), and lipid structural characteristics were evaluated. The results showed that low oat bran content (OEB10)-with a lower concentration of oat protein and β-glucans-resulted in an O/W emulsion with an aggregated droplet structure and lower thermal stability and hardness. These connections between composition, technology, and structural properties of olive O/W emulsions elaborated with oat bran could help in making the optimal choice for their potential application in the production of foods such as healthier meat products.

Keywords: bioactive compounds; meat replacer; oat bran; oil–in–water emulsion; olive oil; structural characteristics; technological properties.

Grants and funding

This research was supported by grant number PID2019-107542RB-C21 funded by MCIN/AEI/10.13039/501100011033, by the CSIC Intramural project (grant numbers 201470E073 and 202070E242), by CYTED (grant number 119RT0568; Healthy Meat network).