Production of Recombinant β-Galactosidase in Lactobacillus plantarum, Using a pSIP-Based Food-Grade Expression System

Abstract:

Food-grade expression systems based on using food-grade microorganisms have been developed for the production of recombinant enzymes used in food applications. Lactic acid bacteria (LAB), especially Lactobacilli, have been widely used for various purposes in food and recognized as a promising host of food-grade enzyme production. In this study, the pSIP409 vectors, originally containing the erm gene, were used to replace this selection marker by the alr gene resulting in the production of the pSIP609 expression vector in L. planatarum. This vector could express high amounts of β-galactosidases, showing both high volumetric as well a specific enzymatic activity. Thus, the food-grade recombinant enzyme production in L. planatarum harboring pSIP609 was very fruitful and useful for food industries.

• Periodical: Advanced Materials Research (Volumes 931-932)
• Pages: 1518-1523
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.931-932.1518
• Online since: May 2014
• Authors: Numphon Thaiwong, Siwatt Thaiudom*, Dietmar Haltrich, Montarop Yamabhai
• Keywords: Alanine Racemase Gene, Food-Grade Expression Systems, Lactic Acid Bacteria, pSIP System, β-Galactosidases

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