Production of exopolysaccharide by strains of Lactobacillus plantarum YO175 and OF101 isolated from traditional fermented cereal beverage

Author:

Adesulu-Dahunsi Adekemi Titilayo1,Jeyaram Kumaraswamy2,Sanni Abiodun Isiaka1,Banwo Kolawole1

Affiliation:

1. Department of Microbiology, University of Ibadan, Ibadan, Oyo, Nigeria

2. Microbial Resource Division, Institute of Bioresources and Sustainable Development, Imphal, Manipur, India

Abstract

Lactobacillus plantarum YO175 and OF101 isolates from Nigerian traditional fermented cereal gruel ‘ogi’, were investigated on the basis of their capability to produce exopolysaccharide (EPS) on sucrose modified deMan Rogosa Sharpe medium (mMRS). Functional groups analysis of the EPSs produced (EPS-YO175 and EPS-OF101) by Fourier-transform infrared (FT-IR) spectroscopy revealed the presence of –OH, C=O and C–H groups. The chemical composition of EPS-YO175 and EPS-OF101 showed the presence of 87.1% and 80.62% carbohydrates and 1.21% and 1.47% protein. For maximum EPS yield, three significant factors were optimized using central composite design and response surface methodology, the predicted maximum EPS produced was 1.38 g/L and 2.19 g/L, while the experimental values were 1.36 g/L and 2.18 g/L for EPS-YO175 and EPS-OF101. The EPS samples showed strong antioxidant activities in-vitro. The scale-up of the production process of the EPS will find its potential application in food industries.

Funder

World Academy of Sciences (TWAS)

Department of Biotechnology, India

Publisher

PeerJ

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,General Medicine,General Neuroscience

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