Effects of ultrasound-assisted basic electrolyzed water (BEW) extraction on structural and functional properties of Antarctic krill (Euphausia superba) proteins
文献类型： 外文期刊
作者： Li, Yufeng 1 ; Zeng, Qiao-Hui 2 ; Liu, Guang 3 ; Peng, Zhiyun 1 ; Wang, Yixiang 4 ; Zhu, Yongheng 1 ; Liu, Haiquan 1 ; Zh 1 ;
作者机构： 1.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China
2.Foshan Univ, Dept Food Sci, Foshan 528000, Peoples R China
3.Minist Agr & Rural Affairs, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Guangdong Acad Agr Sci,Guangdong Key Lab Agr Prod, Guangzhou 510610, Guangdong, Peoples R China
4.McGill Univ, Dept Food Sci & Agr Chem, Ste Anne De Bellevue, PQ H9X 3V9, Canada
5.Minist Agr, Lab Qual & Safety Risk Assessment Aquat Prod Stor, Shanghai 201306, Peoples R China
关键词： Ultrasound; Basic electrolyzed water; Antarctic krill protein; Structural properties; Emulsions
期刊名称：ULTRASONICS SONOCHEMISTRY （ 影响因子：7.491； 五年影响因子：7.537 ）
ISSN： 1350-4177
年卷期： 2021 年 71 卷
页码：
收录情况： SCI
摘要： A novel protein extraction method of ultrasound-assisted basic electrolyzed water (BEW) was proposed, and its effects on the structural and functional properties of Antarctic krill proteins were investigated. Results showed that BEW reduced 30.9% (w/w) NaOH consumption for the extraction of krill proteins, and its negative redox potential (-800 similar to -900 mV) protected the active groups (carbonyl, free sulfhydryl, etc.) of the proteins from oxidation compared to deionized water (DW). Moreover, the ultrasound-assisted BEW increased the extraction yield (9.4%), improved the solubility (8.5%), reduced the particle size (57 nm), favored the transition of a-helix and beta-turn to beta-sheet, promoted the surface hydrophobicity and disulfide bonds formation of krill proteins when compared to BEW without ultrasound. These changes contributed to the enhanced foam capacity, foam stability and emulsifying capacity of the krill proteins. Notably, all the physicochemical, structural and functional properties of the krill proteins were comparable to those extracted by the traditional ultrasound-assisted DW. This study suggests that the ultrasound-assisted BEW can be a potential candidate to extract proteins, especially offering an alternative way to produce marine proteins with high nutritional quality.
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