Bioactive and UV protective silk materials containing baicalin - The multifunctional plant extract from Scutellaria baicalensis Georgi.
There has been a phenomenal increase in the research and development of new health and hygiene-related textile products. This work reports a novel approach to develop antibacterial, antioxidant and UV-protective silk using an adsorption technique of baicalin (a bioactive ingredient from the root of Scutellaria baicalensis Georgi). Baicalin displayed high adsorption capability at pH2.75, contributing to the sufficient functionalities on silk. The equilibrium adsorption research showed that the Langmuir isotherm was able to describe the behavior of baicalin, indicating the electrostatic interactions between the ionized carboxyl groups in baicalin and the positively charged amino groups in silk. The treated silk with 2% owf (on the weight of fiber) baicalin exhibited excellent antioxidant activity, high antibacterial activities against Escherichia coli and Staphylococcus aureus, and very good ultraviolet protection ability comparable to that of the commercial benzotriazole ultraviolet absorber. The baicalin treatment had no obvious impact on the functional groups, crystal structure and surface morphology of silk. The functionalities of the treated silk obviously declined after first laundering cycle and slowly decreased in the following washing cycles. Encouraging results demonstrate that the baicalin-functionalized silk is a promising material for protective clothing and medical textiles.
National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, 199 Renai Road, Suzhou 215123, China.
Yuyang
Y
Zhou
Lushan College, Guangxi University of Science and Technology, Liuzhou 545000, China.
Zhi-Yi
ZY
Yang
National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, 199 Renai Road, Suzhou 215123, China. Electronic address: tangrencheng@suda.edu.cn.
Ren-Cheng
RC
Tang
D000327:Adsorption; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D000975:Antioxidants / Q000494:pharmacology; D001672:Biocompatible Materials / Q000494:pharmacology*; D004560:Electricity; D004926:Escherichia coli / Q000187:drug effects; D005419:Flavonoids / Q000737:chemistry / Q000494:pharmacology*; D006863:Hydrogen-Ion Concentration; D008826:Microbial Sensitivity Tests; D010936:Plant Extracts / Q000494:pharmacology*; D031364:Scutellaria baicalensis / Q000737:chemistry*; D047011:Silk / Q000737:chemistry / Q000648:ultrastructure; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013211:Staphylococcus aureus / Q000187:drug effects; D013314:Stress, Mechanical; D013696:Temperature; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
D000900:Anti-Bacterial Agents; D000975:Antioxidants; D001672:Biocompatible Materials; D005419:Flavonoids; D010936:Plant Extracts; C499814:Scutellaria baicalensis extract; D047011:Silk; C038044:baicalin
Adsorption; Antibacterial activity; Antioxidant activity; Baicalin; Silk; Ultraviolet protection ability