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Abstract <p>This study integrates genomic and physiological analyses to investigate biosurfactant production in <i>Serratia marcescens</i> SM6. Genomic sequencing identified a serrawettin W1 synthetase homolog (EG355_21765) within a putative biosynthetic cluster, confirming the genetic potential for surfactant production. Physiological characterization revealed a carbon source-dependent response. Glucose supported growth-associated biosurfactant synthesis, with yield maximized at high C/N ratios. In contrast, glycerol was a less effective substrate, inducing production only within a narrow concentration range and exhibiting inhibition at higher levels. These findings underscore the critical link between genetic capacity, carbon source selection, and biosurfactant yield in <i>S. marcescens</i> SM6.</p>

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Optimization of Carbon Sources for Biosurfactant Production by Serratia marcescens SM6

  • 期刊论文

  • 发表日期：

    2026年5月25日

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  • T. V. Shirshikova,
  • I. V. Khilyas,
  • M. R. Sharipova,
  • L. M. Bogomolnaya

摘要

Abstract

This study integrates genomic and physiological analyses to investigate biosurfactant production in Serratia marcescens SM6. Genomic sequencing identified a serrawettin W1 synthetase homolog (EG355_21765) within a putative biosynthetic cluster, confirming the genetic potential for surfactant production. Physiological characterization revealed a carbon source-dependent response. Glucose supported growth-associated biosurfactant synthesis, with yield maximized at high C/N ratios. In contrast, glycerol was a less effective substrate, inducing production only within a narrow concentration range and exhibiting inhibition at higher levels. These findings underscore the critical link between genetic capacity, carbon source selection, and biosurfactant yield in S. marcescens SM6.