New packaging materials using biopolymers have been studied to substitute synthetic packaging materials that lead to environmental pollution. In this study, a new biodegradable packaging material was developed using the pectin extracted from Citrus junos pomace, which is considered a food processing byproduct. Rambutan peel extract (RPE), at different concentrations (0.25%, 0.5%, and 1.0%), was added as an active material, and the functional properties of the C. junos pectin (CJP) films were evaluated. The incorporation of RPE enhanced the extensibility of the CJP films and their light-blocking ability by decreasing light transmittance. As the concentration of RPE increased, antioxidant activities of the CJP films increased, along with an increase in total phenolic content. Subsequently, the CJP prepared in this study can be used as a low-cost active biodegradable film material, and RPE can be added as a natural antioxidant for the CJP films to confer antioxidant activity.

中文翻译：

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红毛丹（Nephelium Lappaceum）果皮提取物掺入柑橘类Junos果渣果胶薄膜的研制与表征

已经研究了使用生物聚合物的新型包装材料来替代合成包装材料，从而导致环境污染。在这项研究中，使用从柑桔果渣中提取的果胶开发了一种新的可生物降解包装材料，果胶被认为是食品加工的副产品。添加了不同浓度（0.25％，0.5％和1.0％）的红毛丹果皮提取物（RPE）作为活性物质，并获得了C. junos的功能特性果胶（CJP）膜进行了评估。RPE的掺入通过降低透光率而增强了CJP膜的可延展性及其遮光能力。随着RPE浓度的增加，CJP膜的抗氧化活性也随之增加，总酚含量也随之增加。随后，可以将本研究中制备的CJP用作低成本的可生物降解的活性薄膜材料，并且可以将RPE添加为CJP薄膜的天然抗氧化剂以赋予抗氧化活性。