杨玉姣, 许飞, 陈洁, 汪磊, 关二旗, 张智勇. 儿茶素对糯小麦淀粉和普通小麦淀粉特性影响的对比研究[J]. 河南工业大学学报自然科学版, 2023, 44(6): 51-58. DOI: 10.16433/j.1673-2383.2023.06.007
    引用本文: 杨玉姣, 许飞, 陈洁, 汪磊, 关二旗, 张智勇. 儿茶素对糯小麦淀粉和普通小麦淀粉特性影响的对比研究[J]. 河南工业大学学报自然科学版, 2023, 44(6): 51-58. DOI: 10.16433/j.1673-2383.2023.06.007
    YANG Yujiao, XU Fei, CHEN Jie, WANG Lei, GUAN Erqi, ZHANG Zhiyong. Comparative study on the effect of catechin on starch characteristics of waxy wheat and common wheat[J]. Journal of Henan University of Technology(Natural Science Edition), 2023, 44(6): 51-58. DOI: 10.16433/j.1673-2383.2023.06.007
    Citation: YANG Yujiao, XU Fei, CHEN Jie, WANG Lei, GUAN Erqi, ZHANG Zhiyong. Comparative study on the effect of catechin on starch characteristics of waxy wheat and common wheat[J]. Journal of Henan University of Technology(Natural Science Edition), 2023, 44(6): 51-58. DOI: 10.16433/j.1673-2383.2023.06.007

    儿茶素对糯小麦淀粉和普通小麦淀粉特性影响的对比研究

    Comparative study on the effect of catechin on starch characteristics of waxy wheat and common wheat

    • 摘要: 探究儿茶素对糯小麦淀粉和普通小麦淀粉特性的影响,验证通过儿茶素与糯小麦淀粉结合制备更优特性淀粉的可行性。通过添加儿茶素使其分别与糯小麦淀粉和普通小麦淀粉相互作用,测定4种小麦淀粉的冻融稳定性、溶解度与膨润力、质构特性、流变学特性、相对结晶度、短程有序性、热特性和体外消化特性。结果表明:添加儿茶素后,糯小麦淀粉和普通小麦淀粉的溶解度分别升高27.32%、72.73%,膨润力分别下降14.52%、7.89%,凝胶硬度分别降低21.02%、52.13%,析水率分别降低88.21%、25.81%,相对结晶度分别降低13.95%、10.65%,快消化淀粉含量分别降低23.08%、15.02%;DSC结果显示儿茶素与小麦淀粉形成稳定的复合物。对比两种淀粉,糯小麦淀粉不易发生回生而易被消化,加入儿茶素后两种小麦淀粉的整体品质都得到提高,其中在冻融稳定性及消化特性方面对糯小麦淀粉的改善程度更优于普通小麦淀粉。

       

      Abstract: This study was aimed to investigate the effect of catechin on the characteristics of waxy wheat starch and common wheat starch, and to verify the feasibility of preparing better characteristic starch by combining catechin with waxy wheat starch. The freeze-thaw stability, solubility and swelling power, texture properties, rheological properties, relative crystallinity, short-range order, thermal properties and in vitro digestive properties of the four wheat starches were measured by adding catechin to waxy wheat starch and common wheat starch, respectively. After addition of catechin, the solubility of waxy wheat starch and common wheat starch increased by 27.32% and 72.73%, and the swelling power decreased by 14.52% and 7.89%, respectively. The gel hardnesses of waxy wheat starch and common wheat starch decreased by 21.02% and 52.13%, respectively. The water precipitation ratio of starch in waxy wheat and common wheat decreased by 88.21% and 25.81%, respectively. The relative crystallinities of waxy wheat starch and common wheat starch decreased by 13.95% and 10.65%, respectively. The content of starch RDS of waxy wheat and common wheat decreased by 23.08% and 15.02%, respectively. DSC results showed that catechin and wheat starch formed stable complexes. Compared with two kinds of starch, waxy wheat starch was not easy to retrograde and easy to digest. The overall quality of both wheat starches was improved after the addition of catechin. Among them, the improvement of waxy wheat starch in freeze-thaw stability and digestion characteristics was better than that of ordinary wheat starch. It is feasible to prepare starch with better characteristics by adding catechin to waxy wheat starch.

       

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