3.2.1.63 biotechnology the purified alpha1,2-fucosidase and L-fucose dehydrogenase have sufficiently high activities in phosphate-buffered saline (pH 7.0) at 37 °C, making it possible to develop a one-pot method for the quantitative determination of 2'-fucosyllactose in fermentation samples. The application of this method is more convenient for quantifying 2'-fucosyllactose in a variety of samples that may be obtained from different phases of the biotechnological production of this oligosaccharide. The method is useful for simple and rapid screening of active variants during the development of any industrially important microbial strain producing 2'-fucosyllactose 762598 3.2.1.63 diagnostics the purified alpha1,2-fucosidase and L-fucose dehydrogenase have sufficiently high activities in phosphate-buffered saline (pH 7.0) at 37 °C, making it possible to develop a one-pot method for the quantitative determination of 2'-fucosyllactose in fermentation samples. The application of this method is more convenient for quantifying 2'-fucosyllactose in a variety of samples that may be obtained from different phases of the biotechnological production of this oligosaccharide. The method is useful for simple and rapid screening of active variants during the development of any industrially important microbial strain producing 2'-fucosyllactose 762598 3.2.1.63 medicine 1,2-alpha-L-fucosynthase, derived from an inverting alpha-glycosidase (AfcA) and from a glycosidase with an unusual reaction mechanism, may serve as a promising tool to create biologically active compounds that can be used not only for prebiotics but also for clinical treatments aimed to regulate various cellular processes and infectious diseases 697936