Amino acid surfactant is a biomass-based surfactant. Due to the amino acid skeleton structure in the molecule, it has high safety to the environment and organisms, and has affinity for skin and hair. In addition to the general characteristics of surfactants, it also has the following characteristics:
1: Good surface activity
Similar to other traditional surfactants, amino acid-type surfactants have good emulsification, wetting, solubilization, dispersion, foaming and other properties. According to Qian Huichao et al., the foam height of 0.05% sodium cocoyl methyl taurine under 1500mg/Kg hard water is almost the same as that under pure water. Both are around 1700mm.
Two: Environmental protection, health and safety
Amino acid surfactants show good biodegradability, biocompatibility and high safety, and can be decomposed into fatty acids and amino acids by human enzymes. The researchers conducted subacute tests, chronic toxicity tests and mucosal irritation tests on mice and rabbits, and the results showed that sodium n-acyl amino acid was less irritating than sodium dodecyl sulfate and had higher safety.
Three: strong antibacterial ability
Due to the presence of hydroxyl or unsaturated bonds in the acyl chain, amino acid surfactants are bactericidal and their antibacterial properties increase with the increase of hydroxyl and unsaturation. The antibacterial activity of N-acyl amino acid surfactant against Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli was studied, and the effect of pH on antibacterial activity was investigated. The results showed that N-acyl amino acid surfactant had good antibacterial activity against these three bacteria, and the antibacterial activity decreased when pH>6.
