Preparation, characterization, and antimicrobial activity of novel chitosan blended almond gum–nanosilica bionanocomposite film for food packaging applications

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2023-09-27 DOI:10.1515/mt-2023-0092

Ruby Thomas, Vinaya Thattil Vincent, Umapathy Manickam Janarthanam, Lakshmanan Rajagopal, Skandha Jay

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引用次数: 0

Abstract

Abstract Almond gum and varied concentrations of nanosilica (0.2, 0.4, 0.6, 0.8, and 1.0 wt%) were introduced into the chitosan polymer matrix by solution cast method to enrich the characteristics of the bionanocomposite film. The surface topography, thermal stability, crystalline nature, and functional moieties of the synthesized bionanocomposite films were characterized by SEM, TGA, XRD, and FT-IR. The UV–Vis spectrophotometer showed a maximum absorption wavelength for the film containing the highest concentration of nanosilica. Change in properties such as increased tensile strength, elongation and reduced water solubility, and swelling properties were observed for the bionanocomposite film containing 1.0 wt% nanosilica. In addition, the films exhibited excellent inhibition effect against Escherichia coli bacteria and Candida albicans fungus, which were proven by well diffusion assay method. The carrot slices packed in the bionanocomposite film containing the highest amount of nanosilica retained their freshness for a longer period of time, suggesting the film to be an effective and excellent food packaging material.

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新型壳聚糖混合杏仁胶-纳米二氧化硅生物纳米复合食品包装膜的制备、表征及抗菌性能研究

摘要:采用溶液浇铸法将杏仁胶和不同浓度的纳米二氧化硅(0.2、0.4、0.6、0.8和1.0 wt%)加入壳聚糖聚合物基体中，以丰富生物纳米复合膜的特性。采用SEM、TGA、XRD和FT-IR等手段对合成的生物纳米复合膜的表面形貌、热稳定性、晶体性质和功能组分进行了表征。紫外可见分光光度计测定了含纳米二氧化硅浓度最高的薄膜的最大吸收波长。对于含有1.0 wt%纳米二氧化硅的生物纳米复合膜，观察到其抗拉强度、伸长率和水溶性降低以及膨胀性能的变化。此外，该膜对大肠杆菌和白色念珠菌具有良好的抑菌效果，经孔扩散试验证实。用纳米二氧化硅含量最高的生物复合薄膜包装的胡萝卜片保鲜时间较长，是一种有效的、优良的食品包装材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.