丁香酚对静电纺丝抑菌吸水衬垫结构和功能性质的影响

Effect of Eugenol on the Structure and Functional Properties of Electrospun Antibacterial Absorbent Pads

利用静电纺丝技术包埋丁香酚制备了一种高吸湿性抑菌吸水垫,研究丁香酚添加量对纺丝溶液和纳米纤维吸水垫理化性质的影响,并检测吸水垫的抗氧化和抑菌效果。结果表明,纺丝溶液表观黏度随着丁香酚添加量增加而下降,纳米纤维中“囊泡”结构则呈现增加趋势。吸水垫断裂伸长率随着丁香酚添加量的增加而降低。丁香酚添加量为15%时吸水垫抗拉伸强度最大,但继续加大丁香酚的添加量,抗拉伸强度则呈现明显下降的趋势。吸水垫溶胀率和水蒸气透过率随丁香酚添加量增加而降低。当丁香酚添加量为20%时吸水垫的1,1-二苯基-2-三硝基苯肼自由基和2,2’-联氮双(3-乙基苯并噻唑啉-6-磺酸)阳离子自由基清除能力最强,分别为83%和78%。此外,抑菌实验表明纳米纤维吸水垫对大肠杆菌和金黄色葡萄球菌均具有良好的抑制效果。本方法制备的抑菌吸水垫能有效吸收包装内肉汁积液,减缓产品氧化速率,并抑制微生物繁殖。

Our present study investigated the effect of eugenol addition on the characteristics of spinning solution and the physiochemical properties and antibacterial activity of nanofiber absorbent pads.The results showed that the apparent viscosity of the spinning solution decreased with eugenol addition,and the“vesicle”structure in the nanofiber increased.The elongation at break of the absorbent pad decreased with eugenol addition.The tensile strength of the absorbent pad with 15%eugenol was the largest,but the tensile strength showed a significant downward trend with increasing eugenol content above 15%.As the content of eugenol increased,the swelling ratio and water vapor transmission rate of the absorbent pad decreased.The scavenging capacity of the pad with 20%eugenol against 1,1-diphenyl-2-picrylhydrazyl(DPPH)radical and 2,2’-azino-bis 3-ethylbenzothiazoline-6-sulfonic acid(ABTS)radical cation were the strongest with percentage scavenging of 83%and 78%,respectively.Moreover,the nanofiber absorbent pad had a good inhibitory effect on Escherichia coli and Staphylococcus aureus.In summary,the antibacterial absorbent pad can effectively absorb meat exudate,slow down the oxidation rate of meat and inhibit the reproduction of microorganisms.