School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
Carbohydr Polym. 2018 Jun 1;189:229-237. doi: 10.1016/j.carbpol.2018.02.041. Epub 2018 Feb 19.
Microorganisms can spread on the surface of banknotes and cause many infectious diseases. Chitosan nanofibers (CNFs) and cellulose nanocrystals (CNCs) are nanomaterials, which can affect the antimicrobial properties. In this study, the fungal species that grew on the surfaces of collected banknotes from different places were identified. To examine the antifungal effect of the both nanomaterials on the banknotes, the stable coatings using CNFs and CNCs emulsions were prepared by roller coating. The results revealed that the most colonies in the banknotes obtained from the bakeries and butcheries were Aspergillus sp., whereas the colonies in bus terminals and the hospitals were Aspergillus niger and Penicillium, respectively. The results showed that the CNCs had no antifungal effect alone on the aforementioned species, but it could improve the antifungal effect, adhesion, and stability of CNFs on the banknote surfaces. This study suggested a new approach to decrease the infection spreads through banknotes.
微生物可以在钞票表面传播，并导致许多传染病。壳聚糖纳米纤维（CNFs）和纤维素纳米晶体（CNCs）是纳米材料，它们可以影响抗菌性能。在这项研究中，鉴定了从不同地方收集的钞票表面生长的真菌种类。为了研究这两种纳米材料对钞票的抗真菌效果，通过辊涂制备了使用 CNFs 和 CNCs 乳液的稳定涂层。结果表明，从面包店和肉店获得的钞票上的菌落最多的是曲霉属，而在公共汽车站和医院的菌落分别是黑曲霉和青霉。结果表明，CNCs 单独对上述物种没有抗真菌作用，但它可以提高 CNFs 在钞票表面的抗真菌效果、附着力和稳定性。本研究为减少通过钞票传播的感染提供了一种新方法。
