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HPLC–DAD analysis and antimicrobial activities of Spondias mombin L. (Anacardiaceae)

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Abstract

Spondias mombin is used in the folk medicine for the treatment of diarrhea and dysentery, indicating that extracts obtained from this species may present pharmacological activities against pathogenic microorganisms. The purpose of this work was to investigate the chemical composition and evaluate the antimicrobial activity of extracts obtained from the leaves (aqueous) and bark (hydroethanolic) of S. mombin both as single treatments and in combination with conventional drugs. Following a qualitative chemical prospection, the extracts were analyzed by HPLC–DAD. The antimicrobial activities were evaluated by microdilution. The combined activity of drugs and extracts was verified by adding a subinhibitory concentration of the extract in the presence of variable drug concentrations. The Minimum Fungicidal Concentration (MFC) was determined by a subculture of the microdilution test, while the effect of the in vitro treatments on morphological transition was analyzed by subculture in moist chambers. While the qualitative analysis detected the presence of phenols and flavonoids, the HPLC analysis identified quercetin, caffeic acid, and catechin as major components in the leaf extract, whereas kaempferol and quercetin were found as major compounds in the bark extract. The extracts showed effective antibacterial activities only against the Gram-negative strains. With regard to the combined activity, the leaf extract potentiated the action of gentamicin and imipenem (against Staphylococcus aureus), while the bark extract potentiated the effect of norfloxacin (against S. aureus), imipenem (against Escherichia coli), and norfloxacin (against Pseudomonas aeruginosa). A more significant antifungal (fungistatic) effect was achieved with the bark extract (even though at high concentrations), which further enhanced the activity of fluconazole. The extracts also inhibited the emission of filaments by Candida albicans and Candida tropicalis. Together, these findings suggest that that the extract constituents may act by favoring the permeability of microbial cells to conventional drugs, as well as by affecting virulence mechanisms in Candida strains.

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Abbreviations

IPDs:

Infectious and parasitic diseases

URCA:

Universidade Regional do Cariri

HPLC-DAD:

High Performance Liquid Chromatography-Diode Array Detector

ATCC:

American type culture collection

HIA:

Heart infusion agar

BHI:

Brain heart infusion

DMSO:

Dimethyl sulfoxide

MIC:

Minimum inhibitory concentration

INCQS:

Instituto Nacional de Controle de Qualidade em Saúde—National Institute of Quality Control in Health

FIOCRUZ:

Fundação Instituto Osvaldo Cruz

SDA:

Sabouraud dextrose agar

SDB:

Sabouraud dextrose broth

MFC:

Minimum fungicidal concentration

IC50 :

Concentration that inhibits 50% of the microbial growth

PDA:

Potato dextrose agar

HCA:

Higher concentration assessed

one-way ANOVA:

One-way analysis of variance

CDRI:

Central Drug Research Institute

AELSM:

Aqueous extract of the leaves of Spondias mombin

HEBSM:

Hydroethanolic extract of the bark of Spondias mombin

MDR:

Multidrug-resistant

BAM complex:

β‐Barrel assembly machine complex

SD:

Standard deviations

FCZ:

Fluconazole

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Acknowledgements

The autthors are grateful to the brazilian research agencies FUNCAP, CAPES, CNPq and FINEP by the support of this work.

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Authors and Affiliations

Authors

Contributions

Methodology—antimicrobial assays (MAF, RPC and ATLS); methodology—chemical analysis (AAB, JWAB and AJTM); methodology—statistical analysis (JFSS and TSF); supervision of work—(FABC and MFBMB); coordination of the project (HDMC, JGMC and MFBMB); resources (JER, CFB and MKNS); final draft of the manuscript (ACAMM and JRF).

Corresponding author

Correspondence to Henrique Douglas Melo Coutinho.

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de Freitas, M.A., da Cruz, R.P., dos Santos, A.T.L. et al. HPLC–DAD analysis and antimicrobial activities of Spondias mombin L. (Anacardiaceae). 3 Biotech 12, 61 (2022). https://doi.org/10.1007/s13205-022-03126-1

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  • DOI: https://doi.org/10.1007/s13205-022-03126-1

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