IPA welcomes development of technique to distinguish between bifidobacteria subspecies

By Stephen DANIELLS

- Last updated on GMT

Image: iStockPhoto
Image: iStockPhoto

Related tags Probiotic products Gut flora

A recent study highlighting potential quality issues in select probiotic products raises a concern, says the International Probiotics Association, which also welcomed further development of the appropriate quality control techniques.

A recent study by scientists at the University of California, the University of Massachusetts, and the University of Modena and Reggio Emilia (Italy) reported that contents of many bifidobacteria probiotic products differ from the ingredients listed.

“These results suggest that quality control of probiotics is lacking,”​ they wrote.

Common methods have difficulty distinguishing between two subspecies of Bifidobacterium longum​ - B. longum​ subsp. longum​ and B. longum​ subsp. infantis​, said the researchers.

Writing in the journal Pediatric Research​ (doi:10.1038/pr.2015.244​), the scientists report the use of a reliable and inexpensive DNA-based method to accurately differentiate between the two subspecies. Our full coverage of the study can be found HERE​.

IPA’s position

In a statement sent to NutraIngredients-USA, the International Probiotics Association said that product quality is at the heart of the trust that exists between manufacturer and consumer.

“The report by Lewis and co-workers [1] therefore raises concern; according to the authors, only one out of 16 tested probiotic products confirmed the label claim,” ​read the IPA's statement.

“The closely related subspecies of ​Bifidobacterium longum, ​B. longum ssp. ​infantis and ​B. longum ssp. ​longum, cannot be discriminated based on 16S RNA gene analysis. For that, the technique developed by Lewis and co-workers [1] could be very useful. The authors developed a molecular-based technique to distinguish various species of bifidobacteria. With this, they tested 16 commercial products and determined the content comparing two pills from two different lots.

Probiotics defn
Image © iStockPhoto

“The study notes pill-to-pill and lot-to-lot variation. Unfortunately, we do not know what the variation within the utilized technique is, what part of the observed variation is due to the technique and what is due to actual product variation?

“Also, the detection limit of the technique used is not mentioned. The original paper on the applied technique does not refer to this topic either [2]. However, the paper describing the used technique does acknowledge that minor components may not be picked up. This could explain some, but not all, of the reported discrepancies. It is not unusual for products containing combinations of strains to have some of the strains present at relatively low concentrations; compared to the major components.

“IPA is committed to high probiotic quality and therefore welcomes and supports further development and validation of this (or any other) technique and establishment of an independent quality control laboratory which could carry out this type of analysis.”

References

[1]  Lewis ZT, et al​. “Validating bifidobacterial species and subspecies identity in commercial probiotic products” Pediatric Research​. 2015, doi:10.1038/pr.2015.244​.

[2]  Lewis ZT, et al​. “Use of bifidobacterial specific terminal restriction fragment length polymorphisms to complement next generation sequence profiling of infant gut communities”. Anaerobe. 2013, Vol. 19, pp. 62-69, doi: 10.1016/j.anaerobe.2012.12.005

Related news

Related products

show more

A Groundbreaking Prebiotic

A Groundbreaking Prebiotic

Content provided by ADM | 12-Mar-2024 | Infographic

PreforPro® is a clinically studied prebiotic that supports the growth of select beneficial bacteria in the gut by utilizing phage technology.

Latest Research Findings on Omega-3s for Heart Health

Latest Research Findings on Omega-3s for Heart Health

Content provided by GC Rieber VivoMega™ | 12-Feb-2024 | White Paper

According to Grandview Research, the global omega-3 market is a $2.62 billion market and is one of the fastest-growing segments in the dietary supplement...

Kaneka Ubiquinol® and Preconception Health

Kaneka Ubiquinol® and Preconception Health

Content provided by Kaneka Nutrients – Manufacturer and Supplier of Kaneka Ubiquinol® | 02-Feb-2024 | White Paper

An ally in the fight against oxidative stress, Kaneka Ubiquinol® offers antioxidant support for men and women concerned about reproductive health.

Related suppliers

Follow us

Products

View more

Webinars