Use of healthy emulsion hydrogels to improve the quality of pork burgers
2022
Foggiaro, Danila | Domínguez, Rubén | Pateiro, Mirian | Cittadini, Aurora | Sichetti Munekata, Paulo E. | Campagnol, Paulo C. B. | Fraqueza, Maria João | Palo, Pascuale de | Lorenzo, José M. | Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
The present research evaluated the use of oil mixture emulsion hydrogels as animal fat replacers and their effect on the physicochemical, nutritional and sensory characteristics of pork burgers. Three different types of burgers were manufactured: control (samples elaborated with 100% pork fat), T1 and T2 (pork fat totally replaced by emulsion hydrogels of walnut or pistachio oil and algal oil, respectively). Fat replacement increased the moisture and ash contents and colour parameters (L* and b*) of pork burgers. Modified samples turned out to be firmer and chewier than those in the control group. The addition of oil emulsion hydrogels caused a significant decrease in fat and energy contents and the products obtained can be considered “reduced fat content”. Moreover, the content of saturated fatty acids decreased, while mono- and polyunsaturated fatty acids increased, constituting an improvement in health indices. Sensory differences were found between the samples and T2 was the most preferred for flavour and overall. However, both modified burgers had good levels of acceptability. To conclude, the use of the proposed oil mixture emulsion hydrogels as pork backfat substitutes represents a promising strategy to obtain healthier pork burgers without negatively affecting technological or sensory properties.
Mostrar más [+] Menos [-]The authors thank GAIN (Axencia Galega de Innovación) for supporting this research (grant number IN607A2019/01).
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