High Internal Phase <i>Oil-in-Water</i> Emulsions Stabilised by Cost-Effective Rhamnolipid/Alginate Biocomplexes.

ABSTRACT: A novel, cost-effective, partially purified biosurfactant in the form of a rhamnolipid biocomplex (RLBC) was investigated for its emulsifying properties. The RLBC was obtained through the cultivation of Pseudomonas sp. SP-17 on glycerol, followed by acidic precipitation, without the use of organic solvents for isolation or purification. Composed of rhamnolipids (RLs) and the exopolysaccharide alginate, RLBC exhibited emulsifying properties towards rapeseed oil comparable to those of purified RLs at concentrations as low as 0.15% (w/w), sufficient for the effective stabilisation of oil-in-water (o/w) high internal phase emulsions (HIPEs, 80% oil). Dynamic light scattering analysis revealed similar droplet sizes (9.54 ± 0.96 µm for RLBC vs. 8.93 ± 0.

SUBMITTER: Klosowska-Chomiczewska IE 

PROVIDER: S-EPMC11821110 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature