SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (8): 1384-1388.DOI: 10.1016/j.cjche.2015.05.001

• 生物技术与生物工程 • 上一篇    下一篇

Bienzyme system immobilized in biomimetic silica for application in antifouling coatings

Hongwu Wang1, Yanjun Jiang1,2, Liya Zhou1, Jing Gao1   

  1. 1 School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China;
    2 National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2013-12-18 修回日期:2014-04-26 出版日期:2015-08-28 发布日期:2015-09-26
  • 通讯作者: Yanjun Jiang, Jing Gao
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21006020, 21276060, 21276062), the Application Basic Research Plan Key Basic Research Project of Hebei Province (11965150D), and the Natural Science Foundation of Tianjin (13JCYBJC18500).

Bienzyme system immobilized in biomimetic silica for application in antifouling coatings

Hongwu Wang1, Yanjun Jiang1,2, Liya Zhou1, Jing Gao1   

  1. 1 School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China;
    2 National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2013-12-18 Revised:2014-04-26 Online:2015-08-28 Published:2015-09-26
  • Contact: Yanjun Jiang, Jing Gao
  • Supported by:

    Supported by the National Natural Science Foundation of China (21006020, 21276060, 21276062), the Application Basic Research Plan Key Basic Research Project of Hebei Province (11965150D), and the Natural Science Foundation of Tianjin (13JCYBJC18500).

摘要: Antifouling coatings are used extensively on vessels and underwater structures. Conventional antifouling coatings contain toxic biocides and heavy metals, which may induce unwanted adverse effects such as toxicity to non-target organisms, imposex in gastropods and increased multiresistance among bacteria. Therefore, enzyme-based coatings could be a new alternative solution. A H2O2-producing bienzyme systemwas developed in this study. H2O2 can be produced from starch by the cooperation of α-amylase and glucose oxidase,which promotes the hydrolysis of polymeric chain and oxidizes the glucose to produce H2O2, respectively. The encapsulated bienzyme (A-G@BS) exhibits enhanced stabilities of thermal, pH, recycling and tolerance of xylene. The A-G@BScontaining coating releases H2O2 at rates exceeding a target of 36 nmol·cm-2·d-1 for 90 days in a laboratory assay. The results demonstrate that the method is a promising coating technology for entrapping active enzymes, presenting an interesting avenue for enzyme-based antifouling solutions.

关键词: Antifouling, Bienzyme, H2O2, Coating

Abstract: Antifouling coatings are used extensively on vessels and underwater structures. Conventional antifouling coatings contain toxic biocides and heavy metals, which may induce unwanted adverse effects such as toxicity to non-target organisms, imposex in gastropods and increased multiresistance among bacteria. Therefore, enzyme-based coatings could be a new alternative solution. A H2O2-producing bienzyme systemwas developed in this study. H2O2 can be produced from starch by the cooperation of α-amylase and glucose oxidase,which promotes the hydrolysis of polymeric chain and oxidizes the glucose to produce H2O2, respectively. The encapsulated bienzyme (A-G@BS) exhibits enhanced stabilities of thermal, pH, recycling and tolerance of xylene. The A-G@BScontaining coating releases H2O2 at rates exceeding a target of 36 nmol·cm-2·d-1 for 90 days in a laboratory assay. The results demonstrate that the method is a promising coating technology for entrapping active enzymes, presenting an interesting avenue for enzyme-based antifouling solutions.

Key words: Antifouling, Bienzyme, H2O2, Coating