What benefits of Lactobacillus acidophilus have been cited in the scientific literature?
Lactobacillus acidophilus — historically also called Bacillus acidophilus — has 10 peer-reviewed benefits indexed under the potential claims lens, spanning food bioprotection, bacteriocin production, and probiotic functionality. These are literature-cited findings, not approved label claims or regulatory endorsements.
L. acidophilus produces the bacteriocin lactacin B (~8,100 Da); strain PNW3 also produces a predicted helveticin J active against STEC E. coli O177, with inhibition zones reaching 24.3 mm after partial purification. A multi-strain lactic acid bacteria cocktail including this species showed ~2 log reductions of Listeria monocytogenes and ~1 log reduction of E. coli O157:H7 on lettuce in cited pre-harvest biocontrol trials.
Additional literature cites elimination of Shiga toxigenic E. coli O157 and O145 in acidophilus yoghurt within six days of refrigerated storage, probiotic potential highlighted for fishery applications, and a cell-free supernatant combined with a fruit extract achieving 99.2% degradation of mycobacterial mycolic acids in food matrices.
1AAPFCO-accepted claims
Listing details- Beneficial to plants and/or soils.
Accepted wording, shown verbatim · source: AAPFCO Plant Biostimulant list
2Potential claims from the literature
Bioprotective extract from Lactobacillus acidophilus CRL641 (BE-1) reduced growth of the spoilage exopolysaccharide producer Latilactobacillus sakei CRL1407 by 2.11 log CFU/g in vacuum-packaged meat discs at 4 °C, and its combination with BE-2 achieved a 3.31 log CFU/g reduction
Bioprotective extract from Lactobacillus acidophilus CRL641 completely inhibited the spoilage strain Latilactobacillus sakei CRL1407 in a refrigerated meat model system under vacuum and aerobic conditions at 4 and 10 °C, as shown by plate culturing
Reported to contribute to extension of fresh meat shelf-life without quality loss when used as a biocontrol agent in combination with conventional preservation barriers
Acidophilus yoghurt fortified with Lactobacillus acidophilus eliminated Shiga toxigenic E. coli O157, non-toxigenic E. coli O157, and Shiga toxigenic E. coli O145 within six days of refrigerated storage, achieving log reductions of 3.176, 3.176, and 2.865 CFU/g, respectively, significantly greater than reductions observed in traditional yoghurt
Lactobacillus acidophilus produces the bacteriocin lactacin B (an ~8100-Da protein), whose production is enhanced by co-cultivation with the sensitive indicator Lactobacillus delbrueckii ssp. lactis 4797
A cocktail of lactic acid bacteria including Lactobacillus acidophilus exhibited antimicrobial efficacy against Listeria monocytogenes (~2 log reduction) and E. coli O157:H7 (~1 log reduction) on lettuce as pre-harvest biocontrol agents
Lactobacillus acidophilus isolates demonstrated probiotic potential including survival under simulated gastrointestinal tract conditions, auto-aggregation, and hydrophobicity, and were highlighted as priority biocontrol agents in the fishery industry
Lactobacillus acidophilus PNW3 genome encodes genes for lactic acid and bioactive peptide production, adhesion molecules, resistance to harsh gut environmental conditions, and improvement of host metabolism, supporting probiotic functionality
Lactobacillus acidophilus PNW3 produces a bacteriocin predicted to be helveticin J, with crude bacteriocin exhibiting a maximum zone of inhibition of 21.7 ± 0.58 mm against STEC E. coli O177, increasing to 24.3 ± 1.15 mm after partial purification
Cell-free supernatant of Lactobacillus acidophilus, combined with a quadri-mix fruit extract, achieved 99.2% degradation of mycobacterial mycolic acids after 48 h both in phosphate buffer solution and Karish cheese models, and was reported as a promising biocontrol candidate against Mycobacterium tuberculosis in food matrices
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