Tangerine peel-derived nitrogen-doped carbon dots incorporated chitosan/pullulan-based active packaging film for bread packaging.

IF 5.4 2区医学 Q1 BIOPHYSICS Colloids and Surfaces B: Biointerfaces Pub Date : 2024-10-24 DOI:10.1016/j.colsurfb.2024.114339

Yoonjung Sul, Ajahar Khan, Jun Tae Kim, Jong-Whan Rhim

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Abstract

Citrus peel waste carbon dots based on nitrogen-doped (N-TanCD) were developed by a hydrothermal strategy to deliver active packaging fillers and characterized by transmission electron microscopy, photoluminescence, and Fourier transform infrared analyses. The addition of N-TanCD into chitosan-pululan (CS/Pul@N-TanCD) polymer blend amplified the tensile strength of the composite film by 22.8 %, whereas the antioxidant activities against DPPH and ABTS reached 62.7 % and 91.6 %, respectively. The proposed film showed blocked 98.8 % of UV-A and 100 % of UV-B without affecting the film's transparency. The CS/Pul@N-TanCD film lowered the contamination of L. monocytogenes and E. coli by more than 4 and 5 log CFU/mL, respectively. Sliced bread was packaged using CS/Pul-based films and stored for 12 days at 50 % relative humidity and 25 °C to investigate changes in the quality of the bread. It was found that bread packaged with CS/Pul film integrated with N-TanCD maintained excellent bread quality relating to appearance, moisture content, hardness, weight loss, and total viable bacterial count.

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用于面包包装的橘子皮掺氮碳点壳聚糖/普鲁兰活性包装膜。

通过水热法开发了基于掺氮（N-TanCD）的柑橘皮废弃碳点，用于提供活性包装填料，并通过透射电子显微镜、光致发光和傅立叶变换红外分析对其进行了表征。将 N-TanCD 添加到壳聚糖-纤维素（CS/Pul@N-TanCD）聚合物共混物中后，复合薄膜的拉伸强度提高了 22.8%，对 DPPH 和 ABTS 的抗氧化活性分别达到了 62.7% 和 91.6%。在不影响薄膜透明度的情况下，所建议的薄膜可阻挡 98.8% 的 UV-A 和 100% 的 UV-B。CS/Pul@N-TanCD 薄膜可将单核细胞增生症和大肠杆菌的污染率分别降低 4 和 5 log CFU/mL 以上。使用 CS/Pul 薄膜包装切片面包，并在相对湿度为 50%、温度为 25°C 的条件下存放 12 天，以研究面包质量的变化。结果发现，使用含有 N-TanCD 的 CS/Pul 薄膜包装的面包在外观、含水量、硬度、重量损失和总存活细菌数方面都能保持良好的面包质量。

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来源期刊

Colloids and Surfaces B: Biointerfaces 生物-材料科学：生物材料

CiteScore

11.10

自引率

3.40%

发文量

730

审稿时长

42 days

期刊介绍： Colloids and Surfaces B: Biointerfaces is an international journal devoted to fundamental and applied research on colloid and interfacial phenomena in relation to systems of biological origin, having particular relevance to the medical, pharmaceutical, biotechnological, food and cosmetic fields. Submissions that: (1) deal solely with biological phenomena and do not describe the physico-chemical or colloid-chemical background and/or mechanism of the phenomena, and (2) deal solely with colloid/interfacial phenomena and do not have appropriate biological content or relevance, are outside the scope of the journal and will not be considered for publication. The journal publishes regular research papers, reviews, short communications and invited perspective articles, called BioInterface Perspectives. The BioInterface Perspective provide researchers the opportunity to review their own work, as well as provide insight into the work of others that inspired and influenced the author. Regular articles should have a maximum total length of 6,000 words. In addition, a (combined) maximum of 8 normal-sized figures and/or tables is allowed (so for instance 3 tables and 5 figures). For multiple-panel figures each set of two panels equates to one figure. Short communications should not exceed half of the above. It is required to give on the article cover page a short statistical summary of the article listing the total number of words and tables/figures.