Albert Jan Kluyver was the second Professor of Microbiology in Delft, from 1920 until his death in 1956.

His interest in biochemistry was to expand the activities of the Delft research group into the realms of metabolic pathways and bioenergetics. Kluyver was responsible for the "Unity in Diversity" description of biochemistry in which he pointed out that "from the cockroach to the elephant, it is all the same". Kluyver and his researchers developed the submerged method of culturing fungi, much used in industry today for, among other things, antibiotic production. He was also one of the people behind the idea that microbial taxonomy should be based on a combination of morphology and physiology, rather than simply on morphological features.

One of his first PhD students was Cornelius van Niel, one of the scientists responsible for taking the Delft School of Microbiology to the New World.

When it was decided that the old laboratory was no longer adequate, Kluyver was deeply involved in the design of the current Kluyver laboratory, but sadly did not live to work in it.


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