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Table 5 Preference for different hydrophobic substrates of various bioemulsifiers

From: Designer bioemulsifiers based on combinations of different polysaccharides with the novel emulsifying esterase AXE from Bacillus subtilis CICC 20034

Emulsifier Component Molecular weight Hydrophobic substrate specificity
Diesel Soybean oil Lubricating oil Aliphatic (< C8) Aliphatic (C10 < C18) Aromatic
AXE Protein 35.6 kDa +++ ++ ++ +++ + +++
PhaP Protein 14.6 kDa +++ +++ +++ NA NA NA
PhaR Protein 25 kDa +++ +++ +++ NA NA NA
RAG-1 Emulsan Polysaccharide-protein 980 kDa +++ NA NA
Alasan Polysaccharide-protein 1 MDa NA + NA + +++ +
AlnA Protein 35.7 kDa NA NA NA + ++ NA
Ps-bioemulsifier Polysaccharide-protein NA +++ NA NA + ++ +++
  1. NA: Data not available;
  2. +++: substrate was highly emulsified;
  3. ++: substrate was slightly emulsified;
  4. +: substrate was poorly emulsified;
  5. –: substrate was not emulsified