Bryszewska Malgorzata Anita, Pareja Daniel Gutierez, Kaczmarek Lukasz, Sobczyk-Guzenda Anna, Piotrowska Malgorzata, Batory Damian
Institute of Natural Products and Cosmetics, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 90-537 Lodz, Poland.
Faculty of Pharmacy, Universitario de Cartuja, University of Granada, 18011 Granada, Spain.
Int J Mol Sci. 2024 Dec 23;25(24):13746. doi: 10.3390/ijms252413746.
Bacterial cellulose (BC) is a subject of interest for researchers due to its advantageous characteristics, including a straightforward manufacturing process, biocompatibility, and extensive modification potential. The hydrophilic nature of the material is beneficial in some applications, yet a limiting factor in others. This study aimed to develop BC-based materials with goFogureod moisture resistance. The modification of bacterial cellulose (BC) using apple powder, stearic acid, or a combination of these modifiers resulted in the formation of a range of materials, some of which had their surfaces additionally functionalised by coating with a mixture of apple powder and stearic acid (HSt). The nature and type of changes were confirmed by FTIR and theoretical analysis, which was conducted by modelling the interaction between cellulose and homogalacturonan or rhamnogalacturonan using SCIGRESS v.FJ 2.7 software. Changes in hydrogen bonding resulting in a weakening of the interactions between cellulose and water in the presence of pectin were demonstrated by both empirical data and modelling. The effectiveness of BC functionalisation was confirmed by material wettability. The water contact angle changed from 38° for the unmodified material to 125° for the material obtained by modification of the bacterial cellulose with glycerol followed by modification with a mixture of HSt at a concentration of 10% and AP at a concentration of 60%. The modifications produced a material with a robust hydrophobic surface. The results suggest that the surface roughness may not be the primary factor influencing the hydrophilicity or hydrophobicity of these materials but that it is more likely to be related to the interactions of components. None of the tested materials demonstrated antimicrobial activity against , , , , or .
细菌纤维素（BC）因其具有诸多优势特性，包括制造工艺简单、生物相容性以及广泛的改性潜力，而成为研究人员关注的对象。该材料的亲水性在某些应用中有益，但在其他应用中却是一个限制因素。本研究旨在开发具有良好防潮性的基于细菌纤维素的材料。使用苹果粉、硬脂酸或这些改性剂的组合对细菌纤维素（BC）进行改性，形成了一系列材料，其中一些材料的表面还通过用苹果粉和硬脂酸的混合物（HSt）进行涂层而功能化。通过傅里叶变换红外光谱（FTIR）和理论分析证实了变化的性质和类型，理论分析是使用SCIGRESS v.FJ 2.7软件对纤维素与同型半乳糖醛酸或鼠李半乳糖醛酸之间的相互作用进行建模来进行的。经验数据和建模均表明，氢键的变化导致在果胶存在下纤维素与水之间的相互作用减弱。通过材料的润湿性证实了细菌纤维素功能化的有效性。水接触角从未改性材料的38°变为用甘油改性细菌纤维素后再用浓度为10%的HSt和浓度为60%的苹果粉（AP）的混合物改性所获得材料的125°。这些改性产生了一种具有坚固疏水表面的材料。结果表明，表面粗糙度可能不是影响这些材料亲水性或疏水性的主要因素，而更可能与各组分之间的相互作用有关。所测试的材料均未对 、 、 、 或 表现出抗菌活性。
