Journal of Industrial and Engineering Chemistry, Vol.97, 287-298, May, 2021
Synthesis of eco-friendly fatty acid based zwitterionic biosurfactants from coconut oil sources and characterization of their interfacial properties
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In this study, three different types of fatty acid based biosurfactants were prepared from coconut oil and the successful synthesis was confirmed by using FT-IR, 1H-NMR and 13C-NMR analysis. Interfacial characteristics assessment has shown that all of the prepared FEA surfactants are excellent in surfactant activity and effective in reducing interfacial free energy. In particular, FEA-3 is found to possess good soil removal capacity and emulsification activity since the molecules of FEA-3 surfactant are more closely packed at the interface and thus more efficient at lowering the interfacial energy. Environmental compatibility tests such as biodegradability, oral toxicity, and skin/eye irritation revealed that FEA-3 surfactant is easily biodegradable, mild, non-toxic and non-irritating, suggesting that FEA-3 surfactant can be employed in detergent products formulation.
Keywords:Fatty acid based biosurfactant;Coconut oil;Environmental compatibility;Interfacial property;Detergent products formulation
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