Three Amino Acids Block and Break Down Candida and Staphylococcus Biofilms

Aspartic acid, cysteine, and glutamic acid can both prevent biofilm formation and break down established biofilms of Candida albicans and Staphylococcus aureus, according to a peer-reviewed study published in BMC Microbiology on 24 October 2026. The research, led by James S. Goodwine, Megha Gulati, and Clarissa J. Nobile with colleagues including David R. Andes, examined naturally occurring L-amino acids as antibiofilm agents against these two major disease-causing microbes, testing them in single-species and dual-species settings.

Biofilms are surface-associated microbial communities that dominate natural and host-associated environments and act as major reservoirs for infections. The authors note that current therapeutics primarily target planktonic cells and are often ineffective against biofilms, which motivates the search for biofilm-specific strategies rather than yet another conventional antimicrobial.

In the study, administration of the three amino acids reduced both biofilm formation and established biofilm biomass for C. albicans, a fungus, and S. aureus, a bacterium, in each growth configuration tested.

The researchers also report a combination effect: composite amino acid treatment enhanced the activity of fluconazole, an antifungal drug, during C. albicans biofilm formation. The authors suggest that targeted amino acid administration, used alone or alongside existing antimicrobials, could offer a novel strategy for preventing and treating biofilm-associated infections.

Several caveats frame these findings. The work investigated laboratory biofilm models rather than clinical outcomes, so the results demonstrate activity in vitro and do not by themselves establish efficacy in patients. The article is being shared early as a peer-reviewed, accepted manuscript carrying a permanent DOI; this version remains subject to further edits before the final Version of Record replaces it. The authors position these findings as an indication of potential, a step toward biofilm-specific treatment strategies rather than a ready-made clinical intervention.

Subject of Research: Amino acid treatments that prevent and disrupt Candida albicans and Staphylococcus aureus biofilms

Article Title: Aspartic acid, cysteine, and glutamic acid prevent biofilm formation and disrupt mature biofilms of Candida albicans and Staphylococcus aureus

Article References: Goodwine, J. S., Gulati, M., Ennis, C. L., Ikeh, M. A. C., Gunasekaran, D., Sanchez, H., Valle Arevalo, A., Martorano-Fernandes, L., Madrigal, M. I., Hernday, A. D., Andes, D. R., & Nobile, C. J. (2026). Aspartic acid, cysteine, and glutamic acid prevent biofilm formation and disrupt mature biofilms of Candida albicans and Staphylococcus aureus. BMC Microbiology. https://doi.org/10.1186/s12866-026-05794-y

Image Credits: AI Generated

DOI: 10.1186/s12866-026-05794-y

Keywords: Candida albicans, Staphylococcus aureus, biofilms, amino acids, aspartic acid, cysteine, glutamic acid, fluconazole, antimicrobial resistance, BMC Microbiology, Aspartic, acid