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Open AccessArticle

Application of Natural Flavonoids to Impart Antioxidant and Antibacterial Activities to Polyamide Fiber for Health Care Applications

1
College of Textile and Clothing Engineering, Soochow University, 178 East Ganjiang Road, Suzhou 215021, China
2
National Engineering Laboratory for Modern Silk, Soochow University, 199 Renai Road, Suzhou 215123, China
*
Author to whom correspondence should be addressed.
Antioxidants 2019, 8(8), 301; https://doi.org/10.3390/antiox8080301
Received: 22 June 2019 / Revised: 25 July 2019 / Accepted: 8 August 2019 / Published: 12 August 2019
(This article belongs to the Special Issue Phytochemical Antioxidants and Health)
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Abstract

Polyamide fiber has the requirements for antioxidant and antibacterial properties when applied to produce functional textiles for heath care purposes. In this work, three natural flavonoids (baicalin, quercetin, and rutin) were used to simultaneously impart antioxidant and antibacterial functions to polyamide fiber using an adsorption technology. The relations of the chemical structures of flavonoids with their adsorption capability, adsorption mechanisms, and antioxidant and antibacterial activities were discussed. The Langmuir–Nernst adsorption model fitted the adsorption isotherms of the three flavonoids well. The adsorption kinetics of the three flavonoids conformed to the pseudo second-order kinetic model. Quercetin exhibited the highest affinity and adsorption capability, and imparted the highest antioxidant and antibacterial activities to polyamide fiber; and moreover, its antioxidant and antibacterial functions had good washing durability. This study demonstrates that the treatment using natural flavonoids is an effective way to exhance the health care functions of polyamide fiber. View Full-Text
Keywords: antioxidant activity; antibacterial activity; flavonoids; polyamide fiber; adsorption antioxidant activity; antibacterial activity; flavonoids; polyamide fiber; adsorption
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Li, Y.-D.; Guan, J.-P.; Tang, R.-C.; Qiao, Y.-F. Application of Natural Flavonoids to Impart Antioxidant and Antibacterial Activities to Polyamide Fiber for Health Care Applications. Antioxidants 2019, 8, 301.

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