Cited by 642Probiotics and Fermented FoodsGut microbiota and healthInfant Nutrition and Health

Health Benefits of Heat-Killed (Tyndallized) Probiotics: An Overview

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Piqué, Núria, Berlanga, Mercedes, Miñana-Galbis, David·2019·International Journal of Molecular Sciences

Abstract

Nowadays, the oral use of probiotics is widespread. However, the safety profile with the use of live probiotics is still a matter of debate. Main risks include: Cases of systemic infections due to translocation, particularly in vulnerable patients and pediatric populations; acquisition of antibiotic resistance genes; or interference with gut colonization in neonates. To avoid these risks, there is an increasing interest in non-viable microorganisms or microbial cell extracts to be used as probiotics, mainly heat-killed (including tyndallized) probiotic bacteria (lactic acid bacteria and bifidobacteria). Heat-treated probiotic cells, cell-free supernatants, and purified key components are able to confer beneficial effects, mainly immunomodulatory effects, protection against enteropathogens, and maintenance of intestinal barrier integrity. At the clinical level, products containing tyndallized probiotic strains have had a role in gastrointestinal diseases, including bloating and infantile coli—in combination with mucosal protectors—and diarrhea. Heat-inactivated probiotics could also have a role in the management of dermatological or respiratory allergic diseases. The reviewed data indicate that heat-killed bacteria or their fractions or purified components have key probiotic effects, with advantages versus live probiotics (mainly their safety profile), positioning them as interesting strategies for the management of common prevalent conditions in a wide variety of patients´ characteristics.

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  • Key structures in the cell or supernatant fractions may confer probiotic properties, mainly through immune-modulation, protection against pathogens, and fortifying mucosal barrier integrity.

    “Piqué et al. (2019) suggested the presence of key structures in the cell or supernatant fractions may confer probiotic properties, mainly through immune-modulation, protection against pathogens, and fortifying the mucosal barrier integrity [261].”
  • Preparations from certain probiotic species and strains have shown to maintain health benefits even after no longer being viable.

    “However, preparations from certain probiotic species and strains (such as those from lactobacilli and bifidobacteria) have shown to maintain health benefits even after no longer being viable [261–263].”

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Research works printed but not linked: 1

  1. [141]De Servi B. Meloni M. Antidiarrhoeal agents and paracellular permeability of E. coli-infected Caco-Goblet intestinal model Proceedings of the XXV Belgian Week of Gastroenterology Ostend, Belgium 9 February 2013 Abstract B22

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Authors
Piqué, N., Berlanga, M., & Miñana-Galbis, D.
Affiliations
  • Universitat de Barcelona (ES)
  • Microbiology Section, Department of Biology, Healthcare and Environment, Faculty of Pharmacy and Food Sciences, Universitat de Barcelona (UB), Av Joan XXIII, 27-31, 08028 Barcelona, Catalonia, Spain
Corresponding author
Piqué, Núria
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2019-05-23
Volume
20
Issue
10
Pages
2534
ISSN
1422-0067 (ISSN-L)
OpenAlex
W2946568639
Cited by
642
References
190
Citations by year
2026: 90 · 2025: 110 · 2024: 120 · 2023: 91 · 2022: 87 · 2021: 79 · 2020: 54 · 2019: 7 · 2018: 1 · 2017: 1 · 2014: 1
FWCI
5.12
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Dipòsit Digital de la Universitat de Barcelona (Universitat de Barcelona) (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • RECERCAT (Consorci de Serveis Universitaris de Catalunya) (submittedVersion, cc-by)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Nursing › Nutrition and Dietetics › Infant Nutrition and Health
Keywords
heat-killed probiotics, probiotic safety, lactic acid bacteria, Bifidobacterium, cell-free supernatant, immunomodulation, intestinal barrier integrity, antibiotic resistance, gastrointestinal diseases, allergic diseases
MeSH terms
Animals, Bacterial Infections, Bifidobacterium, Gastrointestinal Diseases, Hot Temperature, Humans, Lactobacillus, Probiotics, Microbial Viability, Immunomodulation

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