Isolation and characterization of Lactobacillus casei A14.2, a strain with immunomodulating activity on Apis mellifera

Carvajal, Romina I.; Silva-Mieres, Fabiola; Ilabaca, Alejandra; Rocha, Jorge; Arellano-Arriagada, Luciano; Arbalti, Felipe A. Zuniga; García-Cancino, Apolinaria

doi:10.1016/j.sjbs.2023.103612

Cited by 1 publication

(1 citation statement)

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“…Therefore, it is necessary to achieve the development of new natural products for the treatment of V. destructor that do not generate resistant populations of mites or toxic residues in the beehives or beekeeping products and that are safe for bees and beekeepers and easy to use. Thus, bioactive compounds, mainly probiotics, have begun to be studied as natural compounds to control V. destructor infestation and improve honey bee health [37][38][39][40]. Although the mechanism of action is not entirely clear, it is thought to be related to factors such as the ability of bacteria to synthesize metabolites that inhibit the growth of pathogens, competition for nutrients, or stimulation of the immune system [41].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Potential Effect of Postbiotics Obtained from Honey Bees against Varroa destructor and Their Combination with Other Organic Products

García-Vicente,

Benito-Murcia,

Martín

et al. 2024

Insects

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The Varroa destructor mite infests Apis mellifera colonies and causes significant harm. Traditional treatments have become less effective because of mite resistance development and can also generate residues inside beehives. This study aimed to gauge the efficacy of a beehive-derived postbiotic in reducing V. destructor viability and to explore its synergies with organic compounds. Four lactic acid bacteria (LAB) species, Leuconostoc mesenteroides, Lactobacillus helsingborgensis, Bacillus velezensis, and Apilactobacillus kunkeei, were isolated and tested in a postbiotic form (preparations of inanimate microorganisms and/or their components) via bioassays. L. mesenteroides, L. helsingborgensis, and B. velezensis notably reduced the mite viability compared to the control, and they were further tested together as a single postbiotic product (POS). Further bioassays were performed to assess the impact of the POS and its combinations with oxalic acid and oregano essential oil. The simple products and combinations (POS/Oregano, POS/Oxalic, Oregano/Oxalic, and POS/Oregano/Oxalic) decreased the mite viability. The most effective were the oxalic acid combinations (POS/Oregano/Oxalic, Oxalic/Oregano, POS/Oxalic), showing significant improvements compared to the individual products. These findings highlight the potential of combining organic products as a vital strategy for controlling V. destructor infection. This study suggests that these combinations could serve as essential tools for combating the impact of mites on bee colonies.

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