J. Mater. Sci. Technol. ›› 2026, Vol. 257: 46-59.DOI: 10.1016/j.jmst.2025.09.011

• Research Article • Previous Articles     Next Articles

Bifunctional eco-friendly tobacco stem extract with antibacterial and corrosion inhibition properties for mitigating microbiologically influenced corrosion

Jiahang Lia,1, Di Wanga,1,*, Xi Ouyanga, Zehong Tiana, Yalin Wua, Bei Liua, Zhilin Lia, Enze Zhoua, Xianghong Lib,*, Fuhui Wanga, Tingyue Guc, Dake Xua,*   

  1. aState Key Laboratory of Digital Steel, Northeastern University, Shenyang 110819, China;
    bCollege of Materials and Chemical Engineering, Southwest Forestry University, Kunming 650224, China;
    cDepartment of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens 45701, OH, USA
  • Received:2025-06-11 Revised:2025-09-02 Accepted:2025-09-03 Online:2025-09-19
  • Contact: *E-mail addresses: wangdi@mail.neu.edu.cn (D. Wang), xianghong-li@163.com (X. Li), xudake@mail.neu.edu.cn (D. Xu)
  • About author:1These authors contributed equally to this work.

Abstract: Tobacco stem extract (TSE), derived from agricultural waste, was developed as a novel eco-friendly bifunctional agent for mitigating microbiologically influenced corrosion (MIC). TSE exhibited broad-spectrum antibacterial properties, achieving an exceptional efficacy of 99.9% against gram-negative Desulfovibrio vulgaris and gram-positive Bacillus licheniformis sessile cells in their biofilms. TSE also decreased MIC rates by 98% and 91% for D. vulgaris and B. licheniformis, respectively. Additionally, TSE showed an efficiency of 85% in mitigating abiotic corrosion. The antimicrobial mechanism was found to stem from microbial cell disruption by bioactive components (nicotine, quercetin, caffeic acid), while corrosion inhibition arises from TSE adsorption on metal surfaces according to molecular simulation. These results demonstrated that TSE not only integrates antimicrobial and anticorrosion functions into a single natural extract, but also provides a sustainable utilization of waste for resource recovery, offering a promising green alternative to conventional commercial biocides for industrial MIC mitigation.

Key words: Steel, Microbiologically influenced corrosion, Biofilm, Corrosion inhibitor, Tobacco stem extract, Antibacterial