Abstract The present study aimed to develop heat sealable soybean polysaccharide (SSPS)/gelatin blend films intended to be used as edible food packaging materials. The films were fabricated by solution casting method using SSPS/gelatin blends and plasticized by glycerol. The results indicated that the heat sealability, stretchability and resistance to fracture of the films were significantly improved by blending SSPS with gelatin. The incorporation of gelatin into SSPS films also increased the thermal stability but decreased the water solubility, rigidity and water vapor permeability of the films. ATR-FTIR spectra and DSC results indicated strong interactions between SSPS and gelatin. The studies of optical properties, SEM, AFM, and XRD revealed that SSPS and gelatin were compatible to a certain degree in this blend system. Packaging tests confirmed that the blend films have showing potential as edible material in food packaging.

中文翻译：

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用于食品包装应用的热封可溶性大豆多糖/明胶混合可食用薄膜

摘要 本研究旨在开发热封大豆多糖（SSPS）/明胶混合薄膜，旨在用作可食用的食品包装材料。这些薄膜是通过溶液浇铸法使用 SSPS/明胶共混物制造的，并用甘油增塑。结果表明，SSPS与明胶的共混显着提高了薄膜的热封性、拉伸性和抗断裂性。将明胶掺入 SSPS 薄膜也增加了热稳定性，但降低了薄膜的水溶性、刚性和水蒸气渗透性。ATR-FTIR 光谱和 DSC 结果表明 SSPS 和明胶之间有很强的相互作用。光学性质、SEM、AFM 和 XRD 的研究表明，SSPS 和明胶在该共混体系中具有一定程度的相容性。