Synthesis, characterization, and optimization of antimicrobial biolubricant derived from <i>Ocimum lamiifolium</i> and lactic acid.

ABSTRACT: Optimal extraction parameters were determined, yielding 12.4 % oil at 4.5 h, with a particle size of 1.375 mm and a solute-to-solvent ratio of 0.28 w/v. The extracted oil exhibited high yield (15 % moisture, 0.92 g/mL specific gravity), a volatile lubricant component (3 %), a pH of 4.2-5.91, low ash (11.5 %), high saponification value (19.7 g KOH/g) and moderate acid number (8.9 mg KOH/g), iodine value of 35.3 g/L, low viscosity (0.1160 Pa s), and high diffusion capacity (95 %). Chemical analysis using UV-Vis spectrophotometry was employed to identify the constituents present in the extract, while FTIR spectra indicated the presence of alcoholic and phenolic components, suggesting interactions with lactic acid. Through GC/MS analysis, a total of 32 phytochemicals were identified, with seve

SUBMITTER: Gebreyes DA 

PROVIDER: S-EPMC11791235 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature