Genotyping of Probiotic Lactobacilli in Nigerian Fermented Condiments for Improved Food Safety

Yemisi Obafemi; Solomon Oranusi; Ajanaku Kolawole Oluseyi; Paul Akinduti

doi:10.3889/oamjms.2022.8338

Authors

Yemisi Obafemi Department of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria https://orcid.org/0000-0001-6919-792X
Solomon Oranusi Department of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria https://orcid.org/0000-0001-6919-792X
Ajanaku Kolawole Oluseyi Department of Chemistry, Covenant University, Ota, Ogun State, Nigeria https://orcid.org/0000-0002-5320-845X
Paul Akinduti Department of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria https://orcid.org/0000-0003-0697-8176

DOI:

https://doi.org/10.3889/oamjms.2022.8338

Keywords:

Fermented foods, Condiments, Genomics, Lactobacillus species, Probiotics, Starter culture

Abstract

BACKGROUND: Plant-based naturally fermented condiments usually result in poor quality products with various bacteria and fungi contaminants. Previous reports suggested the use of starter cultures from previously fermented condiments in fermentation processes to ensure health-promoting benefits, improved quality, shelf life, and organoleptic properties for the achievement of healthy nutrition, safe, and quality food.

AIM: This study aimed to genotype potential lactobacilli from locally fermented condiments for improved food safety.

METHODS: The lactobacilli colonies isolated from fermented condiments purchased from food markets in Southwest Nigeria were profiled for probiotic activities, hemolytic activities, antibiotics susceptibility, and inhibitory activities against food pathogens. Interesting probiotic lactobacilli were identified using 16S rRNA gene sequencing and evaluated for phylogenetic relatedness with other globally reported probiotic lactobacilli.

RESULTS: Lactobacillus species which expressed significant probiotics, γ-hemolysis, anti-spoilage, and anti-listerial activities (P < 0.05) with tolerable safety profiles were identified as Lactiplantibacillus plajomi YD001 (MW280136), Lactiplantibacillus plantarum YD002 (MW280139), L. plantarum YD003 (MW280137), and Lacticaseibacillus paracasei YD004 (MW280138) possessed 50.75, 50.61, 50.75, and 52.54 mol% DNA G+C contents, respectively. The species clustered into different phylogroups with high clonal relatedness with other potential lactobacilli meta-data (≥96.80%) obtained from the public repository.

CONCLUSION: Obtained genotyped Lactobacillus species are potential starter cultures for improved fermentation processes, control of food pathogens, and spoilage organisms.

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