香云纱染整工艺中原料抗菌机制研究进展OA

With the increasing public awareness of health and the growing demand for eco-functional textiles,textile materials possessing antimicrobial and antifungal properties are becoming an important direction for industry development.Xiangyunsha(also known as gambiered Guangdong silk),a traditional silk fabric originating from the Lingnan region of China,exhibits excellent resistance to mildew due to its unique"dyeing with Dioscorea cirrhosa tuber extract and subsequent treatment with river pond mud"process,thus serving as valuable reference for the development of modern functional fabrics.This paper systematically reviews the research progress on three core substances used as raw materials in the dyeing and finishing of Xiangyunsha—namely tannins from Dioscorea cirrhosa,iron oxide-lignin complexes from river pond mud,and humic substances—aiming to reveal the material basis and synergistic mechanisms underlying its antimicrobial and antifungal properties,so as to provide theoretical support for the scientific interpretation and modern application of this traditional craft. As a natural polyphenol,tannins from Dioscorea cirrhosa not only exert broad-spectrum antimicrobial effects through multi-target mechanisms such as disrupting cell membranes and chelating essential metal ions,but also form a pre-coating rich in reactive phenolic hydroxyl groups on the surface of silk fibers,laying the foundation for the interfacial assembly of functional components.During the mud treatment process,iron ions in the river pond mud specifically coordinate with the ortho-phenolic hydroxyl groups of tannins to form a stable"tannin-iron"complex coating,achieving chemical anchoring of the antimicrobial function.This structure enhances the stability and washability of the coating.More importantly,the iron centers can catalyze the generation of hydroxyl radicals through Fenton-like reactions,upgrading the antimicrobial mechanism from static inhibition to dynamic catalytic oxidation,and significantly improving bactericidal efficiency and reducing the risk of microbial resistance.Meanwhile,lignin derivatives in the mud,as natural aromatic polymers,participate in the interfacial assembly of the coating by virtue of their rigid structures and abundant functional groups,enhancing the mechanical strength and hydrophobicity of the coating and forming a physical anti-adhesion barrier.Humic substances,with their complex aromatic skeletons and abundant carboxyl and phenolic hydroxyl groups,act as natural adhesives and redox buffers,penetrating and consolidating the entire coordination network,thereby improving the compactness,durability,and chemical stability of the coating. The durable and highly effective antimicrobial and antifungal properties of Xiangyunsha result from the synergistic action of tannins,iron oxide-lignin complexes,and humic substances.Through stepwise assembly on the fiber surface,these three components collectively construct a multi-layered dynamic defense system integrating physical barrier,chemical inhibition,catalytic elimination,and microenvironment regulation.This system combines multiple mechanisms,including multi-target biochemical inhibition,metal coordination anchoring,radical-mediated catalytic oxidation,interfacial hydrophobic modification,and redox balance regulation,demonstrating the highly synergistic functional integration of natural components in this traditional ecological dyeing and finishing technique.This paper provides a systematic theoretical framework for understanding the scientific connotation of Xiangyunsha as intangible cultural heritage and offers valuable insights for the development of green,efficient,and multifunctional textile finishing technologies based on natural multi-component synergistic strategies.