This study aimed to assess the antimicrobial activities of plant extracts from and when used as coatings for textiles. A pulsed ultrasound-assisted extraction method (PUAE) was employed to obtain methanolic and hexanoic extracts from both plants. methanol extraction exhibited the highest yield at 22.76% (±0.61%), while demonstrated lower yields. Phytochemical screening identified various secondary metabolites in the extracts, including phenols, quinones, and steroids. Antimicrobial tests against and revealed varying degrees of susceptibility, with hexanoic extracts showing the highest activity against at an average percentage growth of 18.74% (±0.26%). Minimum inhibitory concentration (MIC) values were determined for the extracts, but complete inhibition did not occur at concentrations below 500 μg/mL. The extracts exhibited varying effects on and growth, with some extracts promoting bacterial growth. Coating textiles with methanolic extracts demonstrated antibacterial activity against with the highest zone of inhibition observed in cotton-coated samples (258.4 mm). Polyester-coated samples exhibited smaller inhibition zones, with the lowest observed in methanolic extract coating (65.97 mm). Scanning electron microscope (SEM) analysis revealed visible surface morphology changes in coated fabrics, depicting fine, cluster, lumpy, flaky, and fragment-like morphologies. Laundering effects on coated fabrics were investigated, showing a significant decrease in antimicrobial activity after washing. Fourier-transform infrared spectroscopy (FTIR) identified functional groups in the extracts associated with antimicrobial properties. The complexity of the bioactive compounds suggests potential antimicrobial efficacy, resting on factors such as geographical location, climate, and extraction methods. Notwithstanding the limitations, this study contributes valuable insights into the use of plant extracts as antimicrobial coatings for textiles.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10893333 | PMC |
| http://dx.doi.org/10.3390/plants13040514 | DOI Listing |
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