Lactobacillus bacteria in Milk Kefir

The Lactobacillus Quartet: The Pioneering Probiotics of Milk Kefir Grains - Part 3

Dive deep into the world of probiotics with a focus on Lactobacillus species, the key components of milk kefir. Unlock the secrets of their health-enhancing properties.

Lactobacillus Species: The Health-Boosting Quartet

Table Summary

Microorganism Key Health Benefits
Lactobacillus kefiri Antibiotic resistance, antibacterial properties
Lactobacillus kefiranofaciens subsp. kefiranofaciens Kefiran production, immune system boost
Lactobacillus kefiranofaciens subsp. kefirgranum Assumed similar benefits to L. kefiranofaciens subsp. kefiranofaciens, more research is needed
Lactobacillus parakefiri Potential probiotic properties, more research is needed


  1. Lactobacillus kefiri (Lb. kefiri)

Lb. kefiri is no ordinary probiotic. Here are some notable benefits it brings to the table:

  • Antibiotic Resistance: Lb. kefiri has been found to resist certain antibiotics, making it a valuable ally during antibiotic treatment, as it helps maintain a healthy gut microbiota1.

  • Antibacterial Properties: Lb. kefiri produces bacteriocins, substances that inhibit the growth of harmful bacteria. These can protect against pathogens like Salmonella and Escherichia coli1.

  1. Lactobacillus kefiranofaciens subsp. kefiranofaciens

This strain also possesses several noteworthy health advantages:

  • Kefiran Production: It is a major producer of kefiran, a type of polysaccharide that has potential health benefits, including antimicrobial, antitumor, and anti-inflammatory properties2.

  • Boosting Immune System: It can stimulate the immune system, bolstering the body's natural defenses against diseases3.

  1. Lactobacillus kefiranofaciens subsp. kefirgranum

There's limited research available for this particular subspecies. However, as a member of the Lactobacillus kefiranofaciens species, it's reasonable to assume it might share similar probiotic properties. More research is needed to fully understand its benefits.

  1. Lactobacillus parakefiri

Current research is limited, thus, the specific health benefits of Lb. parakefiri are yet to be fully discovered. However, it is a consistent inhabitant of kefir grains, indicating a potentially important role in this probiotic-rich environment.


1.(1) Otles, S., & Cagindi, O. (2003). Kefir: A Probiotic Dairy-Composition, Nutritional and Therapeutic Aspects. Pakistan Journal of Nutrition, 2(2), 54-59.

1.(2) Rosa, D. D., Dias, M. M. S., Grzeskowiak, L. M., Reis, S. A., Conceição, L. L., & Peluzio, M. D. C. G. (2017). Milk kefir: nutritional, microbiological and health benefits. Nutrition Research Reviews, 30(1), 82-96.