Effects of atmospheric pressure plasma jet on the physicochemical, functional, and antioxidant properties of flaxseed protein

Journal of Food Science
Xiao YuRuiling Shen

Abstract

The aim of this study was to explore the effect of atmospheric pressure plasma jet (APPJ) on the physicochemical, functional, and antioxidant properties of flaxseed protein following APPJ treatment (0 to 240 s). The results showed that the pH value continuously dropped with the minimum value of 3.45 ± 0.15 after 240 s of APPJ treatment (-61.7%, P < 0.05). The relative protein solubility significantly declined after 15 s of APPJ treatment (-43.1%, P < 0.05), which was accompanied by the evident increase in mean particle size of flaxseed protein in aqueous solution (+157%, P < 0.05). Moreover, the surface hydrophobicity and contents of disulfide bonds gradually raised when the APPJ exposure time extended from 30 to 240 s. Notably, the foaming, emulsifying, and in vitro antioxidant properties of flaxseed protein were significantly improved following short time of APPJ treatment (5 to 15 s), which was paralleled with the changes of spatial conformation, mild protein oxidation, as well as the release of phenolic acids and flavonoids from naturally occurring protein-phenolic complex. Our findings elucidated that APPJ may be considered as an effective strategy to improve the functionality and antioxidant activities of flaxseed protein...Continue Reading

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Citations

Oct 4, 2020·Foods·Katarzyna Waszkowiak, Beata Mikołajczak
Nov 10, 2021·Critical Reviews in Food Science and Nutrition·Madaraboina Venkateswara RaoVenkatachlapathy N

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