丁香酚/桑皮微纳米纤维膜的制备及其性能  

Preparation of eugenol/mulberry micro-nanofibers membrane and its performance

作　　者：杨培芹 潘志娟[1,2] YANG Peiqin;PAN Zhijuan(College of Textile and Clothing Engineering,Soochow University,Suzhou,Jiangsu 215021,China;National Engineering Laboratory for Modern Silk(Suzhou),Suzhou,Jiangsu 215123,China)

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215021 [2]现代丝绸国家工程实验室(苏州),江苏苏州215123

出　　处：《纺织学报》2024年第8期72-80,共9页Journal of Textile Research

摘　　要：为进一步将废弃的桑树枝回收利用,开发功能性桑皮纤维,实现蚕桑产业副产物的高值化利用,通过微生物-酶-超声波联合脱胶法,辅以破壁工艺提取桑皮微纳米纤维,制备了丁香酚/桑皮微纳米纤维膜,研究了丁香酚质量浓度对纤维膜抗菌性、透湿性和力学性能的影响,并以巨峰葡萄为对象分析了常温(25℃)下纤维膜的水果保鲜效果,测定了贮藏过程中葡萄的外观、质量损失率、腐烂率和维生素C含量等指标的变化。结果表明:丁香酚/桑皮微纳米纤维膜具有良好的透湿性和力学性能;丁香酚质量浓度为0.4 mg/mL的丁香酚/桑皮微米纤维膜对金黄色葡萄球菌、大肠杆菌的抑菌率接近80%,丁香酚质量浓度为0.3 mg/mL的丁香酚/桑皮纳米纤维膜的抑菌率可达90%左右,且在常温下能有效保持葡萄的新鲜度,减缓水分的散失、腐烂并抑制维生素C的流失。Objective The annual waste of mulberry branches is high.In order to recycle and utilize the discarded mulberry branches and achieve high-value utilization of by-products from the sericulture industry,this research aimed to develop functional mulberry fibers from mulberry and silkworm resources and its products for preservation applications following the concept of sustainability.Method The research used microbial-enzyme-ultrasonic extraction method and a wall-breaking technology to extract mulberry micro-nanofibers and prepare eugenol/mulberry micro-nanofiber membrane.The influences of eugenol content on antibacterial,moisture permeability,and mechanical properties of the membrane were studied and analyzed.Packaged kyoho grapes were used as example for preservation evaluation by using the membrane when the grapes were stored at 25℃.Grape appearance,weight loss ratio,decay rate and vitamin C(VC)content were used to evaluate the quality of kyoho grapes.Results The physical properties of eugenol/mulberry microfiber membranes and nanofiber membrane were measured and analyzed.It was found that eugenol/mulberry microfiber membranes and nanofiber membranes showed good moisture permeability,with moisture permeability rates ranging from 1000.58 to 1048.83 g/(m^(2)·d)and 1918.68 to 1996.19 g/(m^(2)·d),respectively.Eugenol was proved to improve the antibacterial properties of the mulberry micro-nanofiber membrane,and the antibacterial rate of eugenol/mulberry skin microfiber membrane with eugenol content of 0.4 mg/mL(E/U0.4)and eugenol/mulberry skin nanofiber membrane with 0.3 mg/mL content of syringol(E/N0.3)against Staphylococcus aureus and Escherichia coli were close to 80%and 90%respectively.As the content of eugenol was increased,the breaking strength of the eugenol/mulberry micro-nanofibers membranes was decreased,and the breaking elongation was increased and then the followed by a decrease,reaching its maximum values of(6.14±1.53)%and(7.51±1.29)%,respectively.Subsequently,physical and chemical indicators such a

关 键 词：桑皮纤维 微生物-酶脱胶 微纳米纤维膜 丁香酚 水果保鲜 

分 类 号：TS102.2[轻工技术与工程—纺织工程]