Reduction of surface tension, interfacial tension, and critical mi celle concentration using a protein-based surf act ant synergist

A method of making a surfactant composition, comprising:

• providing a detersive surfactant package of one or more surfactants;
• providing at least one adjunct detergent ingredient,
• providing a protein component comprising a mixture of multiple intracellular proteins, at least a portion of the mixture including yeast polypeptides obtained from fermenting yeast cells and yeast heat shock proteins resulting from subjecting a mixture obtained from the yeast fermentation to stress,
• the protein component having a concentration sufficient to substantially increase the surface activity of the one or more surfactants relative to the surface activity of the one or more surfactants in the absence of the protein component, and
• combining the detersive surfactant, adjunct detergent ingredient, and protein component to obtain a surfactant composition,
• wherein the detersive surfactant package comprises a total surfactant concentration of from about 6% by weight to about 24% by weight and
• wherein said detersive surfactant further comprises a nonionic surfactant or an anionic surfactant.

A method of making a surfactant composition, comprising:

• providing a detersive surfactant package of one or more surfactants;
• providing at least one adjunct detergent ingredient,
• providing a protein component comprising a mixture of multiple intracellular proteins, at least a portion of the mixture including yeast polypeptides obtained from fermenting yeast cells and yeast heat shock proteins resulting from subjecting a mixture obtained from the yeast fermentation to stress,
• the protein component having a concentration sufficient to substantially increase the surface activity of the one or more surfactants relative to the surface activity of the one or more surfactants in the absence of the protein component, and
• combining the detersive surfactant, adjunct detergent ingredient, and protein component to obtain a surfactant composition,
• wherein the stress is selected from the group consisting of heat stress, chemical stress, and physical stress and
• wherein said detersive surfactant further comprises a nonionic surfactant or an anionic surfactant.