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  • Title: The effect of okra (Abelmoschus esculentus l.) Powder Addition on Qualities of Gluten-free Chiffon Cake.
    Author: Chan DS, Wang ST, Chen MY, Sung WC.
    Journal: Food Sci Technol Int; 2024 Jul; 30(5):485-494. PubMed ID: 36911975.
    Abstract:
    Rice flour (100%, 97.4%, 94.7%, 89.5% (w/w)) and okra powder (2.6%-10.5%) were used to replace wheat flour to make gluten-free chiffon cakes. The effects of okra powder addition on the physicochemical, color, texture, moisture content, total phenolic content, antioxidant, and sensory scores of cakes were evaluated. The batter viscosity, chewiness, ash, protein, fat, total phenolics, and antioxidant activities (1,1-diphenyl-z-picrylhydrazyl hydrate and reducing power) of cakes showed an increasing trend with okra powder addition. Gluten-free chiffon cake containing 5.3% okra powder showed significantly (p < 0.05) higher protein and ash contents as compared to their control and chiffon cake made with wheat flour. Nevertheless, center height, volume index, L*, a*, and b* values, and white index of gluten-free cake decreased with increased okra powder levels. The sensory characteristics of wheat and gluten-free chiffon cakes substituted with 2.6%-5.3% okra powder showed no difference (p > 0.05). Nevertheless, the sensory scores of the 5.3% okra powder addition cake obtained a higher preference than other gluten-free cakes. Although the overall acceptability of gluten-free chiffon cake supplemented with 10.5% okra flour had a lower (p < 0.05) overall acceptability (2.84) than all cake samples, it was still shown acceptable to consumers. Gluten-free rice chiffon cakes with high nutrient contents and antioxidant activities can be processed by the incorporation of okra powder of less than 10.5% to increase the diversification of gluten-free foods. Gluten-free cakes with high amounts of okra powder addition would produce cake having high water content, total phenol content, 1,1-diphenyl-z-picrylhydrazyl hydrate radical scavenging activity, reducing power, hardness, chewiness, cohesiveness, batter viscosity, ash, and crude protein content through principal component analysis.
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