Abstract
Methodological problems are encountered in determinating human seminal protein content since results are influenced especially by techniques which are used, and by modifications due to liquefaction process. In order to test these two points, three methods (Folin, Biuret and Meulemans's reactions) were applied to the same seminal samples and results were compared. The differences seem principally due to the high level of glycoproteins. To determine the modifications of total protein content with time after semen collection, each sample was separated in aliquot fractions and proteolysis was blocked at different times for each fraction. There is an increase of the protein concentration during the first fifteen minutes that follows semen collection. The cause of this phenomenon is discussed.
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