Characterization of Cellulose from Gagome Kelp and Its Effect on Dough, Gluten, and Starch as Novel Bread Improvers

Novel bread formulations with natural improvers have become an essential part of improving the quality of bakery products. In the present study, novel bread improvers made using Gagome kelp cellulose (GC) were systemically evaluated, and cellulose-improved dough (GC-dough), gluten (GC-gluten), and gluten protein and starch (GC-starch) were all studied. The results indicated that the water and oil holding capacity, cholesterol-adsorptive capacity, and the unsaturated fat and saturated fat adsorptive capacities of GC had increased. GC also showed high glucose adsorptive capacity, antioxidant activity, α-amylase inhibition, and glucose diffusion inhibition activity. Furthermore, the color of the GC-dough was improved with the addition of the GC, which also affected the content of glutenin, the water holding capacity in GC-gluten, and the solubility of GC-starch. In addition, the cross-linked network formed by GC could be observed in the GC-bread, indicating an improvement in texture and sensory evaluation. Bread with 1% (m/m) added GC provided the highest sensory characteristics and the best cold storage stability, which suggests that it is the best strategy for further study. The results might show a potential application of by-products of marine origin in commercial bakery production.