Effects of glycosylation combined with tannic acid modification on the emulsification properties of molten globule egg white protein
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(1. Guangdong Agricultural and Industrial Vocational Technical College , Guangzhou , Guangdong 510507 , China; 2. South China Agricultural University , Guangzhou , Guangdong 510642 , China; 3. Shantou City Agricultural Product Quality and Safety Center , Shantou , Guangdong 515000 , China)

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    Abstract:

    [Objective] This study aimed to develop a modification method to stabilize emulsions using molten -globule state egg white protein (MGEWP ).[Methods] MGEWP was prepared through partial denaturation of egg white protein via pH induction.The synergistic effects of D-xylose and tannic acid on the emulsifying properties of MGEWP were analyzed.[Results]] Increasing tannic acid concentration significantly elevated the turbidity and browning degree of D-xylose glycosylated MGEWP (X-MGEWP ) (P<0.05).Tannic acid facilitated the unfolding of X -MGEWP,exposing free sulfhydryl and active groups,which enhanced molecular flexibility,apparent viscosity,storage modulus and loss modulus (P<0.05).However,under extreme pH value treatment,the active groups of MGEWP were passivated,inhibiting the Maillard reaction with D-xylose.As a result,there was no significant difference in emulsification properties between glycosylated X -MGEWP and untreated MGEWP (P>0.05).The addition of tannic acid enhanced the emulsifying activity of X -MGEWP obviously (P<0.05),and it was dose -dependent with tannic acid concentration.[Conclusion] The synergistic modification of MGEWP with D-xylose/tannic acid represents a promising method for enhancing the emulsifying properties of MGEWP,offering potential applications in emulsion stabilization.

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万 俊,张孝芹,邓博文,等.糖基化结合单宁酸改性对熔球态蛋清蛋白乳化特性的影响[J].食品与机械英文版,2024,40(11):12-18.

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  • Received:August 19,2024
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  • Online: February 18,2025
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