Colloidal Studies on Surface Active Agents. XXIV.

Surfactants - Surface Active Agents

The definition for a detergent is a cleaning agent. The main cleaning agent used in earlier days was soap. This term means a compound formed from the reaction of a fatty acid with a base such as caustic soda, forming the sodium soap of the acid. The more commonly used cleaning agent in this day and age is the synthetic detergent (SYNDET) which is a formulation such as TIDE or FAB. The essential...

Silicone Surface-Active Agents

Influence Of Surface Active Agents On Some Lactic Streptococci

The Effect of Surface-active Agents on Phagocytosis.

According to the theoretical formulation of Fenn (1921), based in part on the previous work of Tait (1918) and Rhumbler (1914), a decrease in free surface energy occurs when a particle is ingested by a phagocyte. Mudd and Mudd (1933) offered experimental evidence in support of this concept in their elucidation of the role played by opsonins (and nonimmune serum) in promoting phagocytosis. Bacte...

The effect of surface-active agents on pancreatic lipase.

It has been known for a considerable time, e.g. Rachford (1891), that the addition of bile salts increases the rate of hydrolysis of fat by pancreatic lipase. Bile salts could speed up the rate of hydrolysis by activating the enzyme molecule, but since they are surface-active agents and therefore emulsifying agents it is clear that their activating effect could be simply due to an emulsificatio...