Comparison between surface hydrophobicity of heated and thermosonicated cells to detoxify aflatoxin B1 by co-culture Lactobacillus plantarum and Lactobacillus rhamnosus in sourdough: Modeling studies

Abedi, Elahe; Pourmohammadi, Kiana; Mousavifard, Maryam; Sayadi, Mehran

doi:10.1016/j.lwt.2021.112616

Cited by 12 publications

(5 citation statements)

References 51 publications

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“…Abedi et al (54) revealed that heat treatment altered the cell surface hydrophobicity of LAB and anticipated that the alternation influences the PGN structure in the cell wall. Therefore, structural changes of cell walls in Lp-HKD induced by heat treatment may lead to its better immune stimulating effect in heat-killed Previous studies have demonstrated that the regulation of antiviral cytokine pathways by probiotic administration is an important mechanism for the regulation of rotavirus (55).…”

Section: Discussionmentioning

confidence: 99%

“…The microscopic examination of heat-killed Lp-HKD revealed no morphological change (data not shown). Abedi et al ( 54 ) revealed that heat treatment altered the cell surface hydrophobicity of LAB and anticipated that the alternation influences the PGN structure in the cell wall. Therefore, structural changes of cell walls in Lp-HKD induced by heat treatment may lead to its better immune stimulating effect in heat-killed bacteria.…”

Section: Discussionmentioning

confidence: 99%

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In vitro evaluation of Lactiplantibacillus plantarum HOKKAIDO strain, effective lactic acid bacteria for calf diarrhea

et al. 2023

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Calf diarrhea adversely affects growth and sometimes results in mortality, leading to severe economic losses to the cattle industry. Antibiotics are useful in the treatment against bacterial diarrhea, but not against viral, protozoan, and antibiotic-resistant bacterial diarrhea. Therefore, there are growing requirements for a novel control method for calf diarrhea. Probiotics have been considered promising candidates for preventive and supportive therapy for calf diarrhea for many years. A recent study has revealed that Lactiplantibacillus plantarum HOKKAIDO strain (Lp-HKD) reduces intestinal pathology and the severity of diarrhea in bovine rotavirus (BRV)-infected calves. Lp-HKD is known to enhance the function of human immune cells and expected to be used as probiotics for humans. Therefore, it is hypothesized that Lp-HKD modulates antiviral immune response in cattle and provide the clinical benefits in BRV-infected calves. However, the detailed mechanism of Lp-HKD-induced immunomodulation remains unknown. Thus, this study aimed to elucidate the immunomodulatory and antiviral effects of Lp-HKD in cattle. Cultivation assay of bovine peripheral blood mononuclear cells (PBMCs) showed that live and heat-killed Lp-HKD stimulates the production of interleukin-1β (IL-1β), IL-6, IL-10, and interferon-γ (IFN-γ) from PBMCs. Stimulation by heat-killed Lp-HKD yielded stronger cytokine production than stimulation by the live Lp-HKD. Additionally, CD14+ monocytes were identified as major producers of IL-1β, IL-6, and IL-10 under Lp-HKD stimulation; however, IFN-γ was mainly produced from immune cells other than CD14+ monocytes. Depletion of CD14+ monocytes from the PBMCs cultivation strongly decreased cytokine production induced by heat-killed Lp-HKD. The inhibition of toll-like receptor (TLR) 2/4 signaling decreased IL-1β and IL-6 production induced by live Lp-HKD and IL-1β, IL-6, and IFN-γ production induced by heat-killed Lp-HKD. Furthermore, live or heat-killed Lp-HKD also activated T cells and their production of IFN-γ and tumor necrosis factor-α. Then, culture supernatants of bovine PBMCs treated with heat-killed Lp-HKD demonstrated antiviral effects against BRV in vitro. In conclusion, this study demonstrated that Lp-HKD activates the functions of bovine immune cells via TLR2/4 signaling and exerts an antiviral effect against BRV through the induction of antiviral cytokines. Lp-HKD could be useful for the prevention and treatment of calf diarrhea through its immune activating effect.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

In vitro evaluation of Lactiplantibacillus plantarum HOKKAIDO strain, effective lactic acid bacteria for calf diarrhea

et al. 2023

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“…Annually, significant quantities of grains are contaminated with AFB 1 due to extreme weather conditions or improper storage practices, particularly in hot and humid environments conducive to the growth of Aspergillus fungi [ 3 , 4 ]. As the International Agency for Research on Cancer (IARC) has classified AFB 1 as a Group I human carcinogen, many countries and regions have set maximum residue limits (MRLs) for AFB 1 in grains [ 5 , 6 ]. For example, the European Union (EU) has set the maximum level of AFB 1 at 5.0 μg kg −1 in maize or rice, and 2.0 μg kg −1 in other cereals.…”

Section: Introductionmentioning

confidence: 99%

Determination of Aflatoxin B1 in Grains by Aptamer Affinity Column Enrichment and Purification Coupled with High Performance Liquid Chromatography Detection

Ji,

Sun,

Fang

et al. 2024

Foods

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Aflatoxin B1 (AFB1) is a highly teratogenic and carcinogenic secondary metabolite produced by Aspergillus. It is commonly detected in agricultural products such as cereals, peanuts, corn, and feed. Grains have a complex composition. These complex components severely interfere with the effective extraction and separation of AFB1, and also cause problems such as matrix interference and instrument damage, thus posing a great challenge in the accurate analysis of AFB1. In this study, an aptamer affinity column for AFB1 analysis (AFB1-AAC) was prepared for the enrichment and purification of AFB1 from grain samples. AFB1-AAC with an AFB1-specific aptamer as the recognition element exhibited high affinity and specificity for AFB1. Grain samples were enriched and purified by AFB1-AAC, and subsequently analyzed by high performance liquid chromatography with post-column photochemical derivatization-fluorescence detection (HPLC-PCD-FLD). The average recoveries of AFB1 ranged from 88.7% to 99.1%, with relative standard deviations (RSDs) of 1.4–5.6% (n = 3) at the spiked levels of 5.0–20.0 μg kg−1. The limit of detection (LOD) for AFB1 (0.02 μg kg−1) was much below the maximum residue limits (MRLs) for AFB1. This novel method can be applied to the determination of AFB1 residues in peanut, corn, and rice.

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“…Abedi et al [ 69 ] inoculated a mixture of L. plantarum ATCC 8014 and Lactobacillus rhamnosus ATCC 7469 into an AFB1-containing medium in various modes. The different modes were mainly classified as live cells, heat-inactivated cells, and ultrasonically inactivated cells.…”

Section: Introductionmentioning

confidence: 99%

Research advances in the degradation of aflatoxin by lactic acid bacteria

Wang,

Jiang,

Zhang

et al. 2023

J. Venom. Anim. Toxins incl. Trop. Dis

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Aflatoxins are toxic secondary metabolites that often contaminate food and animal feed, causing huge economic losses and serious health hazards. Aflatoxin contamination has become a major concern worldwide. Biological methods have been used to reduce aflatoxins in food and feed by inhibiting toxin production and detoxification. Among biological methods, lactic acid bacteria are of significant interest because of their safety, efficiency, and environmental friendliness. This study aimed to review the mechanisms by which lactic acid bacteria degrade aflatoxins and the factors that influence their degradation efficiency, including the action of the lactic acid bacteria themselves (cell wall adsorption) and the antifungal metabolites produced by the lactic acid bacteria. The current applications of lactic acid bacteria to food and feed were also reviewed. This comprehensive analysis provided insight into the binding mechanisms between lactic acid bacteria and aflatoxins, facilitating the practical applications of lactic acid bacteria to food and agriculture.

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Comparison between surface hydrophobicity of heated and thermosonicated cells to detoxify aflatoxin B1 by co-culture Lactobacillus plantarum and Lactobacillus rhamnosus in sourdough: Modeling studies

Cited by 12 publications

References 51 publications

In vitro evaluation of Lactiplantibacillus plantarum HOKKAIDO strain, effective lactic acid bacteria for calf diarrhea

In vitro evaluation of Lactiplantibacillus plantarum HOKKAIDO strain, effective lactic acid bacteria for calf diarrhea

Determination of Aflatoxin B1 in Grains by Aptamer Affinity Column Enrichment and Purification Coupled with High Performance Liquid Chromatography Detection

Research advances in the degradation of aflatoxin by lactic acid bacteria

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