Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence in Environment and Plant Physiology, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
Center of Excellence in Environment and Plant Physiology, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
Food Chem. 2022 Apr 16;374:131731. doi: 10.1016/j.foodchem.2021.131731. Epub 2021 Dec 1.
The chitosan (CTS) solutions supplemented with chitosan-montmorillonite (CTS-MMT) nanocomposites at various concentrations were prepared for free-standing films by the casting technique. Incorporating 2% CTS-MMT nanocomposites into the free-standing CTS films could improve the water-resistance and oxygen barrier of the film. For the postharvest experiment, CTS and CTS supplemented with CTS-MMT nanocomposite solutions were applied as banana fruit coating by the dipping technique. The CTS supplemented with 2% CTS-MMT showed a significant retarding in peel color change, reduced electrolyte leakage, and MDA content, while CTS coating could maintain fruit firmness and reduce plasma membrane destruction for only the first few days. In addition, the CTS supplemented with 2% CTS-MMT coating could reduce ethylene production and respiration rate of the banana fruit. Overall results suggest that the CTS supplemented with 2% CTS-MMT nanocomposites is a novel coating material for maintaining the postharvest quality of 'Hom Thong' banana fruit.
将壳聚糖（CTS）溶液与不同浓度的壳聚糖-蒙脱石（CTS-MMT）纳米复合材料混合，通过浇注技术制备成独立式薄膜。将 2% CTS-MMT 纳米复合材料掺入独立式 CTS 薄膜中，可以提高薄膜的耐水性和氧阻隔性。在后熟实验中，CTS 和 CTS 补充 CTS-MMT 纳米复合材料溶液通过浸渍技术应用于香蕉果实涂层。添加 2% CTS-MMT 的 CTS 显著延缓了果皮颜色变化，减少了电解质泄漏和 MDA 含量，而 CTS 涂层仅在前几天就能保持果实硬度并减少质膜破坏。此外，添加 2% CTS-MMT 涂层的 CTS 可以减少香蕉果实的乙烯生成和呼吸速率。总体结果表明，添加 2% CTS-MMT 纳米复合材料的 CTS 是一种新型的涂层材料，可维持‘Hom Thong’香蕉果实的采后品质。
