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中国精品科技期刊2020
李晓雁,曹博强,杨红澎,等. 三赞胶-海藻酸钠可食用复合膜的制备及性能[J]. 食品工业科技,2021,42(19):255−260. doi: 10.13386/j.issn1002-0306.2021030219.
引用本文: 李晓雁,曹博强,杨红澎,等. 三赞胶-海藻酸钠可食用复合膜的制备及性能[J]. 食品工业科技,2021,42(19):255−260. doi: 10.13386/j.issn1002-0306.2021030219.
LI Xiaoyan, CAO Boqiang, YANG Hongpeng, et al. Preparation and Properties of Sanxan/Sodium Alginate Edible Composite Film[J]. Science and Technology of Food Industry, 2021, 42(19): 255−260. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2021030219.
Citation: LI Xiaoyan, CAO Boqiang, YANG Hongpeng, et al. Preparation and Properties of Sanxan/Sodium Alginate Edible Composite Film[J]. Science and Technology of Food Industry, 2021, 42(19): 255−260. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2021030219.

三赞胶-海藻酸钠可食用复合膜的制备及性能

Preparation and Properties of Sanxan/Sodium Alginate Edible Composite Film

  • 摘要: 为探究三赞胶(Sanxan,SAN)与海藻酸钠(Sodium alginate,SA)的协同作用及复合膜的性能,将三赞胶与海藻酸钠以不同质量比复配,以甘油为增塑剂制备复合膜,测定其拉伸强度、断裂伸长率、透光性、溶解性和水蒸气透过率,对复合膜进行差示扫描量热分析,傅里叶红外光谱分析和扫描电子显微镜微观结构表征。结果表明:SAN/SA(5:5)的复合膜拉伸强度最高,与SAN/SA(4:6)的复合膜之间差异不显著(P>0.05),但显著高于其他比例的复合膜(P<0.05);当SAN/SA为6:4时,复合膜的柔韧性显著提高(P<0.05),水蒸气透过率和溶解性最低;差示扫描量热分析表明复合膜的耐热性提高,红外光谱分析表明SAN与SA分子间发生氢键的相互作用,具有较好的相容性和协同作用,微观结构显示复合膜的网络结构排列更规整,膜面的孔隙变小。综上,三赞胶与海藻酸钠具有良好的协同作用,其复配后的SAN/SA复合膜性能显著提高;三赞胶作为新批准应用于食品领域的天然高分子,其应用前景广阔。

     

    Abstract: The aim of this study was to investigate the synergistic effect of Sanxan (SAN) and Sodium alginate (SA) and the properties of composite film. SAN and SA were mixed at different mass ratios, and glycerin was added as plasticizer to prepare composite films. The tensile strength of films, elongation at break, light transmittance, solubility and water vapor transmittance were measured. Differential scanning calorimetry analysis of composite films was carried out. The microstructure of films was characterized by fourier transform infrared spectrum and scanning electron microscope. The results showed that the tensile strength of the SAN/SA film with the mass ratio of 5:5 was the highest, and the difference between the film with the ratio of 4:6 was not significant (P>0.05), but was significantly higher than that of other films (P<0.05). The flexibility of film with SAN/SA mass ratio of 6:4 was significantly increased (P<0.05), the water vapor transmittance and solubility of this film were the lowest. Differential scanning calorimetry analysis showed that the heat resistance of the composite film was improved. According to the results of fourier transform infrared spectrum, hydrogen bond interaction existed between SAN and SA molecules, indicating good compatibility and synergistic effect between them. The microstructure showed that the network structure of the composite film was arranged more orderly and the pores of the film surface were smaller. The results showed that SAN had a good synergistic effect with sodium alginate, and the properties of SAN/SA composite film were significantly improved. As a newly approved natural polymer which can be used in the food field, the application prospect of SAN is broad.

     

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