Biosurfactants from probiotic bacteria: A review

Hajfarajollah, Hamidreza; Eslami, Parisa; Mokhtarani, Babak; Noghabi, Kambiz Akbari

doi:10.1002/bab.1686

Cited by 48 publications

(34 citation statements)

References 52 publications

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“…The probiotic characteristics of lactobacilli associated with the host- Lactobacillus interaction is reckoned to be contributed by the Lactobacillus surface-active molecules (SAMs) [ 184 ]. Lactobacillus SAMs that have been reported to support probiotic actions are peptidoglycan (PG), bacterial polysaccharides, biosurfactants (BS), and teichoic acids (TA) [ 185 , 186 ]. The core SAMs that are shared among LAB includes lipoteichoic acid, polysaccharides, surface layer associated proteins (SLAPs), mucin-binding proteins (MUBs), and fibronectin-binding proteins [ 187 ].…”

Section: Potential Of Surface-active Molecules (Sams) From mentioning

confidence: 99%

Vaginal microbiota and the potential of Lactobacillus derivatives in maintaining vaginal health

2020

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Human vagina is colonised by a diverse array of microorganisms that make up the normal microbiota and mycobiota. Lactobacillus is the most frequently isolated microorganism from the healthy human vagina, this includes Lactobacillus crispatus, Lactobacillus gasseri, Lactobacillus iners, and Lactobacillus jensenii. These vaginal lactobacilli have been touted to prevent invasion of pathogens by keeping their population in check. However, the disruption of vaginal ecosystem contributes to the overgrowth of pathogens which causes complicated vaginal infections such as bacterial vaginosis (BV), sexually transmitted infections (STIs), and vulvovaginal candidiasis (VVC). Predisposing factors such as menses, pregnancy, sexual practice, uncontrolled usage of antibiotics, and vaginal douching can alter the microbial community. Therefore, the composition of vaginal microbiota serves an important role in determining vagina health. Owing to their Generally Recognised as Safe (GRAS) status, lactobacilli have been widely utilised as one of the alternatives besides conventional antimicrobial treatment against vaginal pathogens for the prevention of chronic vaginitis and the restoration of vaginal ecosystem. In addition, the effectiveness of Lactobacillus as prophylaxis has also been well-founded in long-term administration. This review aimed to highlight the beneficial effects of lactobacilli derivatives (i.e. surface-active molecules) with anti-biofilm, antioxidant, pathogen-inhibition, and immunomodulation activities in developing remedies for vaginal infections. We also discuss the current challenges in the implementation of the use of lactobacilli derivatives in promotion of human health. In the current review, we intend to provide insights for the development of lactobacilli derivatives as a complementary or alternative medicine to conventional probiotic therapy in vaginal health.

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Section: Potential Of Surface-active Molecules (Sams) From mentioning

confidence: 99%

Vaginal microbiota and the potential of Lactobacillus derivatives in maintaining vaginal health

2020

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“…Small-molecule surfactants can not only reduce oil/water interfacial tension but also emulsify crude oil, while macromolecular emulsifiers have better emulsifying ability and emulsion stability [16]. Biosurfactant-producing microbes mainly include Acinetobacter, Alcaligenes, Bacillus, Enterobacter, Pseudomonas, and Rhodococcus, together with some strains in the genus Serratia, most of which are strictly aerobic bacteria [16,17]. Therefore, the injection of air during the microbial flooding process is essential for activating surfactant-producing bacteria.…”

Section: Introductionmentioning

confidence: 99%

Effects of Air Injection on the Metabolic Activity of Emulsifier-Producing Bacteria from Oil Reservoirs

Gu¹,

Wang³

et al. 2020

Geofluids

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Oil emulsification is one of the major mechanisms for microbially enhanced oil recovery (MEOR). Although air injection is generally recommended for field trials of MEOR in China, its influence on the microbial community structure in oil reservoirs remains poorly understood, especially activation of emulsifier-producing bacteria. Herein, the effects of air injection on oil emulsification, nutrient consumption, oil properties, and microbial community structures were compared for activated cultures under four different oxygen content conditions: anaerobic, facultative anaerobic, intermittent aeration, and aerobic. The results showed that crude oil in aerobic and intermittent aeration cultures was emulsified effectively when nutrients were thoroughly depleted. The particle diameter of emulsified droplets was 4.74-10.02 μm. High-throughput sequencing results showed that Bacillus and Aeribacillus were effectively activated under aerobic and intermittent aeration conditions, while Tepidimicrobium and Coprothermobacter were activated under facultative anaerobic and anaerobic conditions. Real-time quantitative PCR results showed that the initial emulsifying effect was positively correlated with the abundance of Aeribacillus pallidus.

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“…The human gastrointestinal tract carries an enormous amount of the microbial community and the body provides favorable conditions to normal microflora. They help in body protection to inhibit harmful pathogens colonization and stimulate the immune system of the host . In other words, we can say that human body includes commensal microbiota, which provides health benefits.…”

Section: Introductionmentioning

confidence: 99%

Efficient engineered probiotics using synthetic biology approaches: A review

Yadav

Shukla

2019

Biotech and App Biochem

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The uses of probiotics‐based food supplements are getting emphasis due to their power to ensure better health conditions. Probiotics have diverse and significant applications in the health sector, so probiotic strains require an understanding of the genome level organizations. Probiotics elucidate various functional parameters that control their metabolic functions. In this review, we have compiled aspects of synthetic biology, which are used for the optimization of metabolic processes in probiotics for their use as a supplement in allopathic medicines. Synthetic biology approaches provide information about diverse biosynthetic pathways and also facilitate the novel metabolic engineering approaches for probiotics strain improvement. We have discussed the synthetic biology approaches for producing engineered probiotics via genetic circuits, expression systems, and genome editing tools like CRISPR–Cas and PEVLAB. This review also enlightens future challenges in the development of engineered probiotics.

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Biosurfactants from probiotic bacteria: A review

Cited by 48 publications

References 52 publications

Vaginal microbiota and the potential of Lactobacillus derivatives in maintaining vaginal health

Vaginal microbiota and the potential of Lactobacillus derivatives in maintaining vaginal health

Effects of Air Injection on the Metabolic Activity of Emulsifier-Producing Bacteria from Oil Reservoirs

Efficient engineered probiotics using synthetic biology approaches: A review

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