Cited by 94Probiotics and Fermented FoodsSteroid Chemistry and BiochemistryGut microbiota and health

Evaluation of bile salt hydrolases, cholesterol-lowering capabilities, and probiotic potential of Enterococcus faecium isolated from rhizosphere

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Singhal, Neelja, Maurya, Anay Kumar, Mohanty, Shilpa, Kumar, Manish, Virdi, Jugsharan Singh·2019·Frontiers in Microbiology

Abstract

Bile salt hydrolase (BSH) activity, hypo-cholesterolemic effect and probiotic properties have been reported for Enterococcus strains isolated from animal- and human-gut and, fermented foods but not for strains isolated from environmental niches, like aquatic and terrestrial plants, soil and water. The present study is the first report on isolation of Enterococcus faecium from rhizospheric soils which harbor bsh gene, remove cholesterol in-vitro and possess essential and desirable probiotic attributes. Fifteen samples were collected from different sites located in northern, southern and central regions of India, of which five yielded pure colonies which were named as LR2, LR3, ER5, LR13 and VB1. These were identified by 16S rRNA gene sequencing as E. faecium and evaluated for BSH activity, cholesterol-lowering potential in-vitro and probiotic properties. Our results indicated that all the strains were capable of surviving in harsh conditions of gastro-intestinal tract and did not harbor any of the virulence genes. Though, all strains showed the presence of bsh and potential for cholesterol removal, E. faecium strain LR13 showed a remarkable cholesterol removal capability, vancomycin susceptibility and possessed most of the desirable and essential attributes of a probiotic. Hence, it seems to be fairly promising probiotic candidate which needs to be further evaluated in in vivo studies, especially for hypo-cholesterolemic potential.

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Crossref · 10.3389/fmicb.2019.01567

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  • Lactobacillus produces cholesterol dehydrogenase/isomerase, which transforms cholesterol into coprosterol, subsequently expelled from the body through feces.

    “Lactobacillus produces cholesterol dehydrogenase/isomerase, which transforms cholesterol into coprosterol, subsequently expelled from the body through feces (Singhal et al., 2019).”

    From Lactiplantibacillus plantarum N4 ameliorates lipid metabolism and gut microbiota structure in high fat diet-fed rats (2024) · cites this paper as Singhal et al., 2019

    The References section lists a study titled “Removal of cholesterol by Lactobacilli via incorporation and conversion to coprostanol,” which supports the conversion portion of the claim. Singhal et al.’s Introduction and Results discuss cholesterol assimilation, but our copy does not state that Lactobacillus produces cholesterol dehydrogenase/isomerase or that the product is expelled in feces. No page numbers are available in our copy. (LLM, conf=0.75)

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Authors
Singhal, N., Maurya, A. K., Mohanty, S., Kumar, M., & Virdi, J. S.
Affiliations
University of Delhi (IN)
Corresponding author
  • Singhal, Neelja
  • Kumar, Manish
  • Virdi, Jugsharan Singh
Venue
Frontiers in Microbiology
Published
2019-07-16
Volume
10
Pages
1567-1567
ISSN
1664-302X (ISSN-L)
OpenAlex
W2957363309
Cited by
94
References
52
Citations by year
2026: 7 · 2025: 22 · 2024: 12 · 2023: 9 · 2022: 22 · 2021: 17 · 2020: 5
FWCI
8.49
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Microbiology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Science and Engineering Research Board (SB/YS/LS-156/2014)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
Enterococcus faecium, bile salt hydrolase, cholesterol lowering, probiotic potential, rhizosphere bacteria, gastrointestinal survival, virulence genes, vancomycin susceptibility, cholesterol-lowering effect

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