Fungal physical, chemical and aesthetical deterioration can occur by microbial biofilms adhere to the surface, leading to alterations on the paints integrity. The sol–gel method affords various merits and added with biocides can be used to control paint films biodeterioration. The aim of the present research was to obtain an efficient antifungal protection to waterborne paint films using a sol–gel coating added with silver nanoparticles synthesized by a green methodology using Schinopsis balansae tannin aqueous solution. Herein, was used a low cost and eco-friendly method for the preparation of silver nanoparticles. The antifungal activity was assessed against Aspergillus niger MN371276, Penicillium commune MN371392, Cladosporium sphaerospermum MN371394 and Lasiodiplodia theobromae MN371283. In addition, the nanofunctionalized antifungal coatings were characterized by SEM micrographs, EDS spectroscopy and mapping, contact angle and determination and absorption/ desorption cycles of humidity. Fungal resistance test of sol–gel coating silver nanoparticles over the paint showed to be efficient to prevent fungal biofilm development with 100% inhibition against all strains tested.

附着在表面的微生物生物膜会导致真菌的物理、化学和美观恶化，从而导致油漆完整性的改变。溶胶-凝胶法具有多种优点，添加杀菌剂可用于控制漆膜生物劣化。本研究的目的是使用添加有银纳米颗粒的溶胶-凝胶涂层获得对水性漆膜的有效抗真菌保护，该涂层通过绿色方法使用Schinopsis balansae单宁水溶液合成。在这里，使用低成本和环保的方法来制备银纳米粒子。对黑曲霉MN371276、公社青霉MN371392、球孢枝孢菌的抗真菌活性进行了评估MN371394 和Lasiodiplodia theobromae MN371283。此外，纳米功能化的抗真菌涂层通过 SEM 显微照片、EDS 光谱和绘图、接触角和湿度的测定和吸收/解吸循环进行表征。溶胶-凝胶涂层银纳米粒子在油漆上的抗真菌性测试表明，可以有效地防止真菌生物膜的发展，对所有测试的菌株都有 100% 的抑制作用。