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Published on: January 7, 2019
Oxidative stability of burgers containing chia oil microparticles enriched with rosemary by green-extraction
Rosane Teresinha Heck1, Bruna Nichelle Lucas1, Daniele Jorge Paiva Dos Santos1
1Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil.
Abstract:
In the first part of this study, the oxidative stability of chia oils enriched with rosemary by ultrasound-assisted extraction (UAE) and by a conventional maceration extraction (CME) was evaluated. In the second part, chia oil enriched with rosemary by UAE or CME was microencapsulated and used to replace 50% fat in burgers. The oxidative and sensory quality of burgers were evaluated during 120 days of storage at -18 °C. Chia oil enriched with rosemary by UAE presented a higher oxidative stability compared to CME. Higher Eh and TBARS values were found in burgers containing chia oil microparticles without rosemary. The burgers produced with chia oil microparticles enriched with rosemary by UAE showed greater oxidative stability than other treatments, mainly after cooking. Furthermore, the incorporation of rosemary antioxidants to chia oil reduced the sensory defects caused by the lipid reformulation.
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