Deng Liangting, Zheng Wenhui, Liu Qun, Hu Tianyi, Li Meng, Wu Xialing, Liu Yue, Yang Danmin, Chen Linjing, Weng Wuyin, Zhang Yucang
College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China.
College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China.
Int J Biol Macromol. 2025 Apr;301:140258. doi: 10.1016/j.ijbiomac.2025.140258. Epub 2025 Jan 27.
Purple passion fruit peel (PPFP) is a common biomass waste. Meanwhile, hydrothermal carbonization (HTC) is a common technology used for thermal conversion of biomass waste. Herein, the aqueous phase (AP) of PPFP was determined using HTC, and its properties were studied. Results indicated that AP exhibited strong antibacterial properties (E. coli: 22.50 ± 0.80 mm, S. aureus: 23.28 ± 0.56 mm) and antioxidant capacity (EC: 4.46 mg/mL). Chitosan (CS) and bacterial cellulose nanofibers (BCNFs) were used as the film matrix, and AP was introduced as an antimicrobial substance to develop AP/CSBC films. The interaction between the aqueous phase substances (APSs) and the CSBC film matrix was verified using Fourier transform infrared spectroscopy and X-ray diffraction analysis. The AP/CSBC films demonstrated excellent antibacterial and antioxidant activities. Blueberry preservation test showed that the AP/CSBC films can effectively extend the shelf-life of the fruit, indicating their potential as novel food packaging materials. This study present a method of high-value PPFP utilization and offers an effective approach to preparing biodegradable antibacterial food preservation films.
紫百香果果皮（PPFP）是一种常见的生物质废弃物。同时，水热碳化（HTC）是用于生物质废弃物热转化的常用技术。在此，使用HTC对PPFP的水相（AP）进行了测定，并对其性质进行了研究。结果表明，AP表现出较强的抗菌性能（大肠杆菌：22.50±0.80毫米，金黄色葡萄球菌：23.28±0.56毫米）和抗氧化能力（EC：4.46毫克/毫升）。以壳聚糖（CS）和细菌纤维素纳米纤维（BCNFs）作为薄膜基质，并引入AP作为抗菌物质来制备AP/CSBC薄膜。利用傅里叶变换红外光谱和X射线衍射分析验证了水相物质（APSs）与CSBC薄膜基质之间的相互作用。AP/CSBC薄膜表现出优异的抗菌和抗氧化活性。蓝莓保鲜试验表明，AP/CSBC薄膜能够有效延长水果的货架期，表明其作为新型食品包装材料的潜力。本研究提出了一种高值利用PPFP的方法，并为制备可生物降解的抗菌食品保鲜薄膜提供了有效途径。
