In total, there are 20 different amino acids of which a variety of different
proteins can be composed. The body is able to produce most of the amino acids.
However, 10 amino acids are essential, this means they have to be taken with
the food. These are: leucine, lysine, valine, phenylaline, methionine,
histidine, tryptophane, arginine, threonine, and isoleucine. Amino acids are
produced in a fermentation process. Falling film evaporators for the
concentration of fermentation broths are an essential component of the