Athinarayanan Jegan, Periasamy Vaiyapuri Subbarayan, Alshatwi Ali A
Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food Science and Agriculture, King Saud University, Riyadh P.O. Box 2460, Saudi Arabia.
Polymers (Basel). 2025 Jan 10;17(2):161. doi: 10.3390/polym17020161.
The post-harvest management of fruit is crucial to preventing its decay and loss. Generally, edible coatings are applied to fruit to avoid decay and microbial contamination. We have used ultrasonication to synthesize TiO and residue-derived biosilica embedded in gum arabic nanocomposite. The SiO/TiO/gum arabic nanocomposite morphological and crystalline features were investigated using a scanning electron microscope and X-ray diffractometer, respectively. The SiO/TiO/gum arabic cytocompatibility was assessed using cell viability and microscopic assay. The SEM images revealed that 70-90 nm biosilica and 70-100 nm TiO nanostructures were present on the gum arabic. According to MTT assay and microscopic examination results, SiO/TiO/gum arabic do not inhibit cell viability and modulate cellular structural features; it inferred that SiO/TiO/gum arabic possess good cytocompatibility on human mesenchymal stem cells even up to 400 µg/mL. The date fruits were immersed in SiO/TiO/gum arabic-based coating mixtures and stored at 6 °C for 4 weeks. When date fruits were examined during storage, it was found that the applied coatings contributed to maintaining physicochemical features (e.g., color and texture). These findings suggest that the SiO/TiO/gum arabic-based coating can be applied to extend the shelf life of dates.
水果的采后管理对于防止其腐烂和损失至关重要。一般来说，可食用涂层被应用于水果以避免腐烂和微生物污染。我们使用超声处理合成了嵌入阿拉伯胶纳米复合材料中的二氧化钛和残渣衍生生物二氧化硅。分别使用扫描电子显微镜和X射线衍射仪研究了二氧化硅/二氧化钛/阿拉伯胶纳米复合材料的形态和晶体特征。使用细胞活力和显微镜检测评估了二氧化硅/二氧化钛/阿拉伯胶的细胞相容性。扫描电子显微镜图像显示，阿拉伯胶上存在70 - 90纳米的生物二氧化硅和70 - 100纳米的二氧化钛纳米结构。根据MTT检测和显微镜检查结果，二氧化硅/二氧化钛/阿拉伯胶不抑制细胞活力，也不调节细胞结构特征；由此推断，二氧化硅/二氧化钛/阿拉伯胶对人间充质干细胞具有良好的细胞相容性，即使浓度高达400微克/毫升。将枣果浸泡在基于二氧化硅/二氧化钛/阿拉伯胶的涂层混合物中，并在6℃下储存4周。在储存期间检查枣果时发现，所应用的涂层有助于维持其物理化学特性（如颜色和质地）。这些发现表明，基于二氧化硅/二氧化钛/阿拉伯胶的涂层可用于延长枣的货架期。
