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中国精品科技期刊2020
马珂莹,黄峻榕,伏佳静,等. 谷朊粉和小麦淀粉添加量对重组面团冻藏品质的影响[J]. 食品工业科技,2022,43(24):38−44. doi: 10.13386/j.issn1002-0306.2022020107.
引用本文: 马珂莹,黄峻榕,伏佳静,等. 谷朊粉和小麦淀粉添加量对重组面团冻藏品质的影响[J]. 食品工业科技,2022,43(24):38−44. doi: 10.13386/j.issn1002-0306.2022020107.
MA Keying, HUANG Junrong, FU Jiajing, et al. Effect of Gluten and Wheat Starch on the Frozen Storage Quality of Reconstituted Dough[J]. Science and Technology of Food Industry, 2022, 43(24): 38−44. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2022020107.
Citation: MA Keying, HUANG Junrong, FU Jiajing, et al. Effect of Gluten and Wheat Starch on the Frozen Storage Quality of Reconstituted Dough[J]. Science and Technology of Food Industry, 2022, 43(24): 38−44. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2022020107.

谷朊粉和小麦淀粉添加量对重组面团冻藏品质的影响

Effect of Gluten and Wheat Starch on the Frozen Storage Quality of Reconstituted Dough

  • 摘要: 面团的冷冻保存品质无法满足鲜湿面条工业化生产的要求。为了研究面团主要组分(面筋蛋白和淀粉)对面团冷冻品质的影响,以高筋小麦面粉(50%)、谷朊粉和小麦淀粉(不同比例)为原料进行面团重组,−18 ℃冻藏20 d分析其水分分布、流变特性、糊化特性、凝胶强度、微观结构以及氢键强度,以100%原小麦面粉作为对照组。结果表明,随着谷朊粉:小麦淀粉比例从4:1减小至1:4,冷冻重组面团中的水分分布逐渐由结合水向自由水迁移,弹性模量从125900 Pa降低至73020 Pa;样品的各项糊化参数增大,凝胶硬度也由114.30 g增大到181.39 g。扫描电镜观察发现,谷朊粉:小麦淀粉比例越低越不利于面筋蛋白网络结构的均匀性。添加了谷朊粉和小麦淀粉后,重组面团中的氢键强度均大于对照组,且随着谷朊粉:小麦淀粉比例的减小不断增大。当谷朊粉:小麦淀粉为4:1时,冻藏20 d的重组面团的弹性模量值比对照组高49.95%,有效延缓了面团在冻藏过程中的品质劣变。将淀粉与面筋蛋白进行面团重组可以提高面团的黏弹性,进而有利于其冷冻保存品质。

     

    Abstract: The frozen preservation quality of dough cannot meet the requirements of industrial production of fresh and wet noodles. To investigate the effect of the main dough components (gluten protein and starch) on the quality of the frozen dough, dough restructuring with high gluten wheat flour (50%) and different proportions of gluten and wheat starch, and the water distribution, rheological properties, pasting characteristics, gel strength, microstructure and hydrogen bond strength were analyzed after freezing storage at 18 ℃ for 20 days, with 100% raw wheat flour as the control group. The results showed that the water in the frozen reconstituted dough gradually migrated from bound water to free water, and the elastic modulus decreased from 125900 Pa to 73020 Pa as the ratio of gluten to wheat starch decreased from 4:1 to 1:4, the pasting parameters increased, andgel hardness from 114.30 g to 181.39 g. Scanning electron microscope showed that the lower the ratio of gluten to wheat starch, the more unfavorable the uniformity of the gluten protein network structure. The hydrogen bond strength in the reconstituted dough was greater than that in the control group after adding gluten and wheat starch, and it continued to increase as the ratio of gluten to wheat starch decreased. When the ratio of gluten to wheat starch was 4:1, the elastic modulus of the reconstituted dough frozen for 20 days was 49.95% higher than that of the control group, which delayed the quality deterioration of the dough during the frozen storage. Reconstituting the dough with a certain ratio of starch to gluten can improve the viscoelasticity of the dough, which was beneficial to its cryopreservation quality.

     

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