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Gel properties of Amur sturgeon (Acipenser schrenckii) surimi improved by lecithin at reduced and regular-salt concentrations

机译:Amur Sturgeon(Acipenser Schrenckii)Surimi在减少和常规盐浓度下改善了Amur Sturgeon(Acipenser Schrenckii)的凝胶属性

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This study examined the gel properties of Acipenser schrenckii ( A. schrenckii ) surimi with 10 and 30 g kg ~(?1) of added lecithin at reduced-salt (3 g kg ~(?1) NaCl) and regular-salt (30 g kg ~(?1) NaCl) concentrations. The results suggested that the gel properties of A. schrenckii surimi were strongly salt-dependent. Notably, regular-salt surimi gels showed better properties than reduced-salt surimi in all analyses. However, with the addition and increased levels of lecithin, the hydrogen bond formation and β-sheet content of low-salt surimi gels significantly increased ( P < 0.05). The rheological patterns demonstrated higher elasticity and the gel strength, textural properties, and water holding capacity were also enhanced by lecithin ( P < 0.05). The SEM analysis showed that the protein formation induced by lecithin was able to fill the empty voids and reinforce the microstructures. Unlike in reduced-salt surimi, the influence of higher salt concentration was more dominant in regular-salt surimi diminishing the effects of lecithin. The only adverse effect of lecithin found in this study was the decreasing of whiteness, especially when lecithin added up to 3% in both salt conditions. However, there was no significant damage to the overall gel properties.
机译:该研究检测了acipenser schrencki(A. schrenckii)Surimi的凝胶性质,其中10-30g kg〜(α1)加入的卵磷脂(3g kg〜(α1)NaCl)和常规盐(30 G kg〜(α1)NaCl)浓度。结果表明,Schrenckii Surimi的凝胶性质强烈依赖于含盐。值得注意的是,在所有分析中,常规盐素凝胶显示出比减盐素酸的特性更好。然而,随着卵磷脂的添加和增加水平,低盐素凝胶的氢键形成和β-片状含量显着增加(P <0.05)。流变模式表现出更高的弹性和凝胶强度,卵磷脂的凝胶强度,污水持有能力(P <0.05)。 SEM分析表明,卵磷脂诱导的蛋白质形成能够填充空空隙并加强微观结构。与盐酸盐素不同,常规盐素浓度的影响更大,常规盐素减少卵磷脂的影响。本研究中发现的卵磷脂的唯一不良反应是白度的降低,特别是当卵磷脂在盐条件下增加3%时。但是,对整个凝胶属性没有显着损害。

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