Beneficial, safety, and antioxidant properties of lactic acid bacteria: A next step in their evaluation as potential probiotics

• DOI: 10.1016/j.heliyon.2023.e15610
• Publication Date: 2023-04-20T10:53:29Z
• Authors: Ronaldo Rwubuzizi; Hamin Kim; Wilhelm Heinrich ...; Svetoslav Dimitro...
• Keywords: Lactobacillus salivarius; Enterococcus faecium; Streptococcus salivarius; Hydroxyl radical

The role of lactic acid bacteria (LAB) as probiotics health promoting factors for human or veterinary practice has gained increasing interest during the last three decades. This is reflected in screening approaches LAB strains line with minimal requirements a "probiotic" regard to safety and functionality. latter might also include natural antioxidant properties, thereby constituting an additional benefit substituting synthetic antioxidants. vitro assays conducted this study included scavenging 2,2-diphenyl-1-picrylhydrazil (DPPH) free radical, metal (Fe+2) ion chelation, determining properties hydroxyl superoxide radicals, anti-lipid peroxidation. Analysis DPPH radical property microorganisms current study, showed Streptococcus salivarius ST59HK exhibit highest activity at level 85.24%. greatest Fe+2 chelation 98.2% was recorded Str. ST62HK while lowest ST48HK 71.5%. levels were detected (98.6%) Lactiplantibacillus plantarum ST63HK (35.60%), respectively. Superoxide anion highly exhibited by ST61HK (54.62%) least Enterococcus faecium ST651ea (18.7%). Lastly, Lactobacillus gasseri ST16HK E. ST7319ea peroxidation 69.43% 26.15%, Anti-oxidative appear be strain specific thus some these could potentially applied antioxidants fermented food products.