Improving the property of a reproducible bioplastic film of glutenin and its application in retarding senescence of postharvest Agaricus bisporus
Improving the property of a reproducible bioplastic film of glutenin and its application in retarding senescence of postharvest Agaricus bisporus
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麦谷蛋白可再生生物塑料膜性能的改善及其在延缓双孢蘑菇采后衰老中的应用
DOI：
10.1016/j.fbio.2022.101796
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发表时间：
2022-05
期刊：
影响因子：
5.2
通讯作者：
Yanyin Guo
中科院分区：
文献类型：
--
作者：
Lei Feng;Haipeng Liu;Ling Li;Xiangyou Wang;Hiroaki Kitazawa;Yanyin Guo
生物基薄膜对于保护环境、延长蔬菜保质期具有相当大的作用。麦谷蛋白作为生物底物具有良好的成膜特性。然而，纯麦谷蛋白薄膜的机械性能远低于传统薄膜。在这项研究中，将罗望子胶和麦谷蛋白混合以提高麦谷蛋白膜的机械性能。以1:0.3、1:0.4和1:0.5（w/w）的罗望子胶/麦谷蛋白混合比制备共混膜。结果表明，共混膜的机械性能得到改善，特别是G-TG-2（麦谷蛋白-罗望子胶膜）的拉伸强度比麦谷蛋白膜高2.7倍。同时，G-TG-2的刚性断裂得到增强，断裂伸长率高达89.2%±0.45%。扫描电镜成像证明，麦谷蛋白过量的共混膜产生大量聚集颗粒，而G-TG-2膜表面光滑致密。傅里叶变换红外光谱表明麦谷蛋白和罗望子胶产生强烈的物理缠结和非共价相互作用。与麦谷蛋白膜相比，共混膜的疏水性有所增强。采用2,2-二苯基-1-三硝基苯肼清除率最高的G-TG-2薄膜对双孢蘑菇进行保鲜，有效降低了呼吸速率。颜色、硬度、品质以及过氧化物酶和超氧化物歧化酶活性得到良好保持，延缓了蘑菇的衰老。我们的研究不仅提供了一种有效的蘑菇保鲜方法，而且提出了一种性能优越、操作过程简单的绿色有效的生物塑料薄膜。材料仅包括罗望子胶、麦谷蛋白、NaOH和甘油，将其简单混合，以促进麦谷蛋白的应用、生物包装产业的发展以及循环发展领域。
Bio-based films have a considerable role in protecting the environment and extending the shelf-life of vegetables. Glutenin has good film-forming properties as a biological substrate. However, the mechanical performance of pure glutenin film is far lower than those of traditional films. In this study, tamarind gum and glutenin were blended to improve the mechanical properties of the glutenin film. The blend films were prepared at a tamarind gum/glutenin mixing ratio of 1:0.3, 1:0.4, and 1:0.5 (w/w). The results showed that the mechanical properties of the blend films were ameliorated, especially the tensile strength of the G-TG-2 (glutenin–tamarind gum film), which was 2.7 times higher than that of the glutenin film. Meanwhile, the rigid fracture of G-TG-2 was enhanced, with the elongation at break being as high as 89.2% ± 0.45%. As evidenced by scanning electron microscopic imaging, blend films with excessive glutenin produced a large number of aggregated particles, while the surface of the G-TG-2 film was smooth and compact. Fourier-transform infrared spectroscopy showed that the glutenin and tamarind gum produced strong physical entanglement and noncovalent interactions. Compared with the glutenin film, the hydrophobicity of the blend films was enhanced. The G-TG-2 film with the highest 2,2-diphenyl-1-picrylhydrazyl scavenging rate was used for preservingAgaricus bisporus, which effectively reduced the respiration rate. The color, hardness, quality, and peroxidase and superoxide dismutase activities were well maintained, and the senescence of mushrooms was delayed. Our study not only provided an effective way to preserve mushrooms but also proposed a green and effective bioplastic film with superior properties and simple operating process. The materials included only tamarind gum, glutenin, NaOH, and glycerol, which were simply mixed to promote the application of glutenin, development of the biological packaging industry, and circular development areas.
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影响因子：
5.9
作者：
Chen, Lihong;Reddy, Narendra;Yang, Yiqi
通讯作者：
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影响因子：
1.6
作者：
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3.5
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