Abstract

SummaryThis study investigated the enhancement of food proteins through glycation with bioactive saccharides derived from Konjac glucomannan hydrolysate (KGMH) via the Maillard reaction. The focus was on how the degree of polymerisation (DP) of KGMH influences the glycation process and the properties of conjugates with chicken breast and soy proteins. KGMH samples with low, medium, and high DPs (4.20, 5.21, and 6.11, respectively) were glycated under wet‐heating conditions with varying pH levels (8, 9, and 10) at 70 °C for 15 min to 6 h. Results demonstrated that higher pH and longer reaction times significantly enhanced (P < 0.05) glycation and browning, particularly with lower DP saccharides. The optimal conjugates markedly improved protein solubility (1.3 to 1.9 times), heat stability (1.1 to 2.4 times), and emulsification properties (1.2 to 1.5 times), with the highest DP showing the strongest correlation. Additionally, these conjugates exhibited significantly enhanced in vitro bioaccessibility (58.69% to 66.65%) and antioxidant activity (P < 0.05). This study highlights the novel potential of KGMH‐protein conjugation through the Maillard reaction for developing functional food ingredients with superior quality.

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