Biosurfactant production by Serratia marcescens SS-1 and its isogenic strain SMΔR defective in SpnR, a quorum-sensing LuxR family protein

Yu Hong Wei, Hsin Chih Lai, Shan Yu Chen, Mao Song Yeh, Jo-Shu Chang

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Serratia marcescens SS-1 and its SpnR-defective isogenic mutant, SMΔR, produced an extracellular surfactant able to decrease surface tension of water from 72 to 37 dyne cm-1 (SMΔR strain) and to 45 dyne cm-1 (SS-1 strain). The biosurfactant also emulsified kerosene and diesel with a maximum emulsion index of 77% (diesel and kerosene) for the SMΔR strain, and 72% (kerosene) and 40% (diesel) for the SS-1 strain. Deletion of spnR gene appeared to enhance biosurfactant production. Model simulations suggest that biosurfactant production by the two strains was growth-associated. The SMAR strain had a yield coefficient of 22-32% g dry cell-1, which is 32-50% higher than that of the SS-1 strain.

Original languageEnglish
Pages (from-to)799-802
Number of pages4
JournalBiotechnology Letters
Volume26
Issue number10
DOIs
Publication statusPublished - 2004 May 1

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Kerosene
Serratia marcescens
Proteins
Surface Tension
Gene Deletion
Emulsions
Surface-Active Agents
Water
Growth
Surface tension
LuxR autoinducer binding proteins
Surface active agents
Genes

All Science Journal Classification (ASJC) codes

  • Biotechnology

Cite this

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title = "Biosurfactant production by Serratia marcescens SS-1 and its isogenic strain SMΔR defective in SpnR, a quorum-sensing LuxR family protein",
abstract = "Serratia marcescens SS-1 and its SpnR-defective isogenic mutant, SMΔR, produced an extracellular surfactant able to decrease surface tension of water from 72 to 37 dyne cm-1 (SMΔR strain) and to 45 dyne cm-1 (SS-1 strain). The biosurfactant also emulsified kerosene and diesel with a maximum emulsion index of 77{\%} (diesel and kerosene) for the SMΔR strain, and 72{\%} (kerosene) and 40{\%} (diesel) for the SS-1 strain. Deletion of spnR gene appeared to enhance biosurfactant production. Model simulations suggest that biosurfactant production by the two strains was growth-associated. The SMAR strain had a yield coefficient of 22-32{\%} g dry cell-1, which is 32-50{\%} higher than that of the SS-1 strain.",
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Biosurfactant production by Serratia marcescens SS-1 and its isogenic strain SMΔR defective in SpnR, a quorum-sensing LuxR family protein. / Wei, Yu Hong; Lai, Hsin Chih; Chen, Shan Yu; Yeh, Mao Song; Chang, Jo-Shu.

In: Biotechnology Letters, Vol. 26, No. 10, 01.05.2004, p. 799-802.

Research output: Contribution to journalArticle

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AU - Lai, Hsin Chih

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AU - Yeh, Mao Song

AU - Chang, Jo-Shu

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AB - Serratia marcescens SS-1 and its SpnR-defective isogenic mutant, SMΔR, produced an extracellular surfactant able to decrease surface tension of water from 72 to 37 dyne cm-1 (SMΔR strain) and to 45 dyne cm-1 (SS-1 strain). The biosurfactant also emulsified kerosene and diesel with a maximum emulsion index of 77% (diesel and kerosene) for the SMΔR strain, and 72% (kerosene) and 40% (diesel) for the SS-1 strain. Deletion of spnR gene appeared to enhance biosurfactant production. Model simulations suggest that biosurfactant production by the two strains was growth-associated. The SMAR strain had a yield coefficient of 22-32% g dry cell-1, which is 32-50% higher than that of the SS-1 strain.

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