Indigenous Lactic Acid Bacteria Isolated from Spontaneously Fermented Goat Milk as Potential Probiotics.
Pak J Biol Sci
; 23(7): 883-890, 2020 Jan.
Article
en En
| MEDLINE
| ID: mdl-32700834
BACKGROUND AND OBJECTIVE: Lactic Acid Bacteria (LAB) isolated from goat milk have been known to have various medicinal properties, therefore they are considered as a source of potential probiotics. This research was aimed at evaluating and identifying the LAB isolated from spontaneously fermented goat milk as potential probiotics. MATERIALS AND METHODS: The fresh goat milk fermented for 4 days was serially diluted, plated on de Man Rogosa and Sharpe (MRS) agar supplemented with 1% CaCO3 as selective medium, then purified accordingly. The isolated LAB were screened for their potential to inhibit enteric pathogen bacteria using well diffusion method. Their capabilities to withstand the bile salt and acid environment were also evaluated. The production of organic acids was also assessed. The potential probiotics were identified molecularly using 16S rRNA. RESULTS: The study confirmed that LAB isolated from spontaneous fermentation of goat milk was Lactobacillus plantarum based on 16S rRNA gene marker. This bacterium showed antimicrobial activity against indicator bacteria, ability to live after exposure in bile salt solution and resistance to low acidic environment. The organic acids produced by this bacterium were lactic, acetic, propionic and butyric acids. CONCLUSION: This study concluded that Lactobacillus plantarum YN.1.3 can be further investigated as potential probiotic as it showed antimicrobial activity, withstood the acidic environment and bile salt solution, as well as produced organic acids.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Probióticos
/
Leche
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Lactobacillales
/
Alimentos Fermentados
Límite:
Animals
Idioma:
En
Revista:
Pak J Biol Sci
Año:
2020
Tipo del documento:
Article
Pais de publicación:
Pakistán