PDF(Pubmed)
Abstract：
Arabinoxylan (AX)-based films can improve the mechanical characteristics of biodegradable materials when utilized for food packaging. However, the mechanical properties of AX films for food packaging applications require thorough investigation to establish their viability. In this study, AX was extracted from corn bran coproducts of dry-milling (DCB), wet-milling (WCB), and dried distiller\'s grains with solubles (DDGS) using an acid-alkali method. Packaging materials were produced using these AX extracts, each combined with laccase and sorbitol, forming the basis for three different films. These films were then modified by immersing the surface in a lipase-acetate solution. We evaluated their mechanical characteristics, including thickness, tensile properties, tear resistance, and puncture resistance. The thickness and tensile properties of the modified AX films derived from DCB and DDGS showed significant improvements (p < 0.05) compared to the unmodified AX films. In contrast, the modified AX films from WCB showed no significant changes (p > 0.05) in thickness and tensile properties compared to the unmodified WCB AX films. A significant increase in tear resistance (p < 0.05) was observed in all modified AX films after immersion in the lipase-acetate mixture. While puncture resistance was enhanced in the modified AX films, the improvement was not statistically significant (p > 0.05) compared to the unmodified films. The presence of hydroxyl (OH) and carbonyl (CO) groups on the surfaces of AX films from DCB and DDGS, modified by the lipase-acetate solution, suggests excellent biodegradability properties. The modification process positively affected the AX films, rendering them more bendable, flexible, and resistant to deformation when stretched, compared to the unmodified AX films.
摘要：
当用于食品包装时,基于阿拉伯木聚糖(AX)的膜可以改善可生物降解材料的机械特性。然而,用于食品包装应用的AX膜的机械性能需要进行彻底的调查以确定其可行性。在这项研究中,从干磨（DCB）的玉米麸皮副产物中提取AX，湿磨(WCB),和干燥的酒糟与可溶物（DDGS）使用酸碱法。使用这些AX提取物生产包装材料，每个结合漆酶和山梨糖醇，形成三个不同的电影的基础。然后通过将表面浸入脂肪酶-乙酸酯溶液中来改性这些膜。我们评估了它们的机械特性，包括厚度,拉伸性能，抗撕裂性,和抗穿刺性。与未改性AX膜相比,源自DCB和DDGS的改性AX膜的厚度和拉伸性能显示出显著的改善(p<0.05)。相比之下,与未改性的WCBAX膜相比,来自WCB的改性AX膜在厚度和拉伸性能方面没有显示出显著变化(p>0.05)。在浸入脂肪酶-乙酸盐混合物中之后,在所有改性AX膜中观察到抗撕裂性的显著增加(p<0.05)。虽然在改性AX膜中增强了抗穿刺性,与未改性膜相比,改善无统计学意义(p>0.05)。DCB和DDGS的AX薄膜表面上存在羟基（OH）和羰基（CO），通过脂肪酶-乙酸溶液改性，表明优异的生物降解性能。改性过程对AX薄膜产生了积极影响，使它们更可弯曲，灵活,并且在拉伸时抵抗变形，与未改性的AX膜相比。
