Victor Henri was a French physical chemist. He published over 500 papers in a variety of disciplines including biochemistry, physical chemistry, psychology and physiology.

In 1903, Henri found that enzyme reactions were initiated by a bond between the enzyme and the substrate. In 1910, this work was taken up by American biochemist Leonor Michaelis

Leonor Michaelis

Leonor Michaelis was a German biochemist, physical chemist, and physician, known primarily for his work with Maud Menten on enzyme kinetics and Michaelis-Menten kinetics in 1913.-Early life and education:...

 and Canadian physician Maud Menten

Maud Menten

Maud Leonora Menten was a Canadian medical scientist who made significant contributions to enzyme kinetics and histochemistry. Her name is associated with the famous Michaelis-Menten equation in biochemistry.Maud Menten was born in Port Lambton, Ontario and studied medicine at the University of...

, through their investigation of the saccharase enzyme, eventually leading to the famous Michaelis-Menten kinetics

Michaelis-Menten kinetics

In biochemistry, Michaelis–Menten kinetics is one of the simplest and best-known models of enzyme kinetics. It is named after German biochemist Leonor Michaelis and Canadian physician Maud Menten. The model takes the form of an equation describing the rate of enzymatic reactions, by relating...

that sometimes bears Henri's name.