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In this study, 16 acylamino acid surfactants carrying glycine, alanine, valine, and leucine residues were synthesized in the desired yields in an environmentally friendly manner using vegetable oils and beef tallow as acyl donors. The quantitative compositional analyses of these surfactants were performed using HPLC/MS, and the results were consistent with the fatty acid compositions of the corresponding oils and tallow. Their CMC values, determined by surface tension measurements, generally increased with decreasing amino acid hydrophobicity and average chain lengths. Furthermore, all products showed a better detergency performance than sodium alcohol ether sulfate (NaAES) and the sodium soap derived from oils and tallow, suggesting that they can be potentially applied for the formulation of personal care products.

Synthesis, Characterization, and Properties of Acyl Glycine, Alanine, Valine, and Leucine Derived from Vegetable Oils and Beef Tallow