Evidence map›Paper›PMID 31225698›Full record

ArticleMicrobial biotechnology2019

Impact of spray-drying on the pili of Lactobacillus rhamnosus GG.

Shari Kiekens, Dieter Vandenheuvel, Géraldine Broeckx, Ingmar Claes, Camille Allonsius, Ilke De Boeck, Sofie Thys, Jean-Pierre Timmermans, Filip Kiekens, Sarah Lebeer

Open access · goldAbstract read
In one paragraph

Article in Microbial biotechnology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
5.2field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 43 citations in OpenAlex.

  1. Live and heat-treatediScience · 2026
    Article
  2. Influence of the pili ofApplied and environmental microbiology · 2025
    Article
  3. Review
  4. Heat-KilledFoods (Basel, Switzerland) · 2023
    Article
  5. Foods (Basel, Switzerland) · 2022
    Review
  6. Foods (Basel, Switzerland) · 2022
    Article
  7. Anti-salmonella properties of kefir yeast isolatesSaudi journal of biological sciences · 2022
    Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 1 institution in 2 countries.

Shari KiekensDepartment of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.
Dieter VandenheuvelDepartment of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.
Géraldine BroeckxLaboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium.
Ingmar ClaesDepartment of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.ORCID 0000-0003-4209-4116
Camille AllonsiusDepartment of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.
Ilke De BoeckDepartment of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.
Sofie ThysLaboratory of Cell Biology and Histology, Department of Pharmaceutical, Biomedical and Veterinary Sciences, Antwerp Centre for Advanced Microscopy (ACAM), University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium.
Jean-Pierre TimmermansLaboratory of Cell Biology and Histology, Department of Pharmaceutical, Biomedical and Veterinary Sciences, Antwerp Centre for Advanced Microscopy (ACAM), University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium.ORCID 0000-0003-2506-6252
Filip KiekensLaboratory of Pharmaceutical Technology and Biopharmacy, Department of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium.ORCID 0000-0002-6079-6595
Sarah LebeerDepartment of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium.ORCID 0000-0002-9400-6918
University of Antwerp · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The preservation of the viability of microorganisms in probiotic formulations is the most important parameter ensuring the adequate concentration of live microorganisms at the time of administration. The formulation and processing techniques used to produce these probiotic formulations can influence the preservation of the microbial viability. However, it is also required that the bacteria maintain their key probiotic capacities during processing, formulation and shelf life. In this study, we investigated the impact of spray-drying on different cell wall properties of the model probiotic strain Lactobacillus rhamnosus GG, including its adherence to intestinal epithelial cells. The dltD gene knock-out mutant, L. rhamnosus GG CMPG5540, displaying modified cell wall lipoteichoic acids, showed significantly increased colony-forming units after spray-drying and subsequent storage under standard conditions compared to wild-type L. rhamnosus GG. In contrast, disruption of the biosynthesis of exopolysaccharides or pili expression did not impact survival. However, spray-drying did significantly affect the adherence capacity of L. rhamnosus GG. Scanning electron microscopy confirmed that the pili, key surface factors for adherence to intestinal cells and mucus, were sheared off during the spray-drying process. These data thus highlight that both the functionality and viability of probiotics should be assessed during the spray-drying process and subsequent storage.

Indexed as

DehydrationMicrobial ViabilityBacterial AdhesionColony Count, MicrobialDesiccationEpithelial CellsLacticaseibacillus rhamnosusPreservation, BiologicalProbiotics

Identifiers

PMID31225698
PMCPMC6680608
OpenAlexW2950162247

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.