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Effect of physical factors on the production of bacteriocin from Pediococcus acidilactici ITV 26

M Calderón-Santoyo1, P G Mendoza-García, M A García-Alvarado

  • 1Departamento de Ingeniería Química-Bioquímica, Instituto Tecnológico de Veracruz, Veracruz, Ver. A.P. 1420 C.P. 91860, México.

Journal of Industrial Microbiology & Biotechnology
|July 21, 2001
PubMed

Insights

Optimizing Pediococcus acidilactici ITV 126 growth and bacteriocin production requires specific conditions. A pH of 5, 35°C, and controlled agitation significantly enhance both cell growth and bacteriocin yields.

Area of Science:

  • Microbiology
  • Biotechnology
  • Food Science

Background:

  • Pediococcus acidilactici produces bacteriocins, which are antimicrobial peptides with potential applications in food preservation.
  • Optimizing fermentation conditions is crucial for maximizing bacteriocin yield and microbial growth.

Purpose of the Study:

  • To investigate the effects of pH, temperature, and agitation on the growth and bacteriocin production of Pediococcus acidilactici ITV 126.
  • To determine optimal fermentation parameters for enhanced bacteriocin yields.

Main Methods:

  • Experiments were conducted using a 2(3) factorial design with central and axial points in MRS medium.
  • Varied parameters included temperature (30-40°C), pH (5-7), and agitation (0-200 rpm).
  • Statistical analysis included Anova and Tukey paired comparison tests.

Main Results:

  • A temperature of 35°C favored bacteriocin production, while 40°C optimized cell growth.
  • A significant interaction between temperature and agitation affected microbial growth.
  • A pH of 5 promoted both cell growth and bacteriocin production.

Conclusions:

  • Specific environmental conditions significantly influence Pediococcus acidilactici ITV 126 performance.
  • Fermentation at pH 5 and 35°C with appropriate agitation is recommended for enhanced bacteriocin production.

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