Department of Food Science and Nutrition, King Saud University, Riyadh 1145, Saudi Arabia.
Molecules. 2022 May 10;27(10):3066. doi: 10.3390/molecules27103066.
The influence of 2% and 5% Cordia (CG) and Ziziphus (ZG) gums on dough characteristics and cookie quality was investigated. Micro-DoughLab, a texture analyzer (TA), a rapid viscoanalyzer (RVA), and solvent retention capacity were used to examine the effect of CG and ZG gums on dough physicochemical parameters (SRC) and cookie quality. The diameter, thickness, spread, and sensory evaluation of cookies were evaluated. With the addition of CG and ZG, dough softness, mixing time, and mixing tolerance index (MTI) increased, whereas stability and water absorption decreased. TA data showed that adding gums resulted in softer and less sticky doughs than the control, whereas RVA data showed that adding CG resulted in a significant increase in peak viscosity, but no change in flour gel setback. In comparison to the control and CG samples, the ZG samples exhibited the most dough extensibility. The thickness and diameter of the cookies increased but the spread decreased, due to the added gums. The gum-containing cookies had a lower overall acceptability by panelists than the control, although only by a small margin. Gum-containing cookies, on the other hand, can deliver up to 5% soluble fiber.
研究了 2%和 5%的 Cordia (CG)和 Ziziphus (ZG)树胶对面团特性和饼干质量的影响。使用 Micro-DoughLab、质构分析仪(TA)、快速粘度分析仪(RVA)和溶剂保持能力来研究 CG 和 ZG 树胶对面团物理化学参数(SRC)和饼干质量的影响。评估了饼干的直径、厚度、扩展度和感官评价。随着 CG 和 ZG 的添加,面团的柔软度、混合时间和混合容忍指数(MTI)增加,而稳定性和吸水率降低。TA 数据表明,与对照相比,添加树胶会使面团更柔软、粘性更小,而 RVA 数据表明,添加 CG 会导致峰值粘度显著增加,但不会改变面粉凝胶回生。与对照和 CG 样品相比,ZG 样品的面团延展性最高。由于添加了胶,饼干的厚度和直径增加,但扩展度减小。尽管只有很小的差距,但含胶饼干的总体可接受性低于对照组。然而,含胶饼干可以提供高达 5%的可溶性纤维。