Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad (FUM), P.O. Box 9177948974, Mashhad, Iran.
Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad (FUM), P.O. Box 9177948974, Mashhad, Iran.
Int J Biol Macromol. 2018 Mar;108:874-883. doi: 10.1016/j.ijbiomac.2017.10.184. Epub 2017 Nov 2.
This study investigated the feasibility of using Dracocephalum moldavica seed mucilage (DMSM) as a novel film-forming material. The chemical composition and functional group of the dried DMSM were determined. The DMSM films were prepared using three levels of glycerol (10-40%, w/w). The thermal, micro-structural, barrier, physical, and mechanical properties of the films and their antioxidant activity were examined as a function of the glycerol concentration. As the concentration increased, the films' water vapour permeability, elongation at break (%EB), water solubility, and moisture content significantly increased. But the tensile strength, surface hydrophobicity, melting point, and glass transition point (T) decreased significantly. The films became slightly greenish or yellowish in colour but still looked transparent All the DMSM films displayed remarkable antioxidant activities. The electron micrographs showed that the plasticized films had a uniform surface without any obvious cracks or pores. The results of the present study suggest that DMSM as a novel antioxidant edible film with interesting specifications can be used to package several food products.
本研究旨在探讨以Dracocephalum moldavica 种子粘胶（DMSM）作为新型成膜材料的可行性。对干燥的 DMSM 的化学成分和官能团进行了测定。使用三个甘油浓度水平（10-40%，w/w）制备了 DMSM 薄膜。研究了甘油浓度对薄膜的热性能、微观结构、阻隔性能、物理性能和机械性能及其抗氧化活性的影响。随着浓度的增加，薄膜的水蒸气透过率、断裂伸长率（%EB）、水溶性和水分含量显著增加。但拉伸强度、表面疏水性、熔点和玻璃化转变温度（T）显著降低。薄膜颜色略带绿色或黄色，但仍保持透明。所有 DMSM 薄膜均显示出显著的抗氧化活性。电子显微镜照片显示，增塑薄膜表面均匀，无明显裂纹或孔隙。本研究结果表明，DMSM 可作为一种具有有趣特性的新型抗氧化可食用薄膜，用于包装多种食品。
