Note that other membrane-intensified transaminations employing heterogenized biocatalysts were also reported , yet these studies fall outside of the scope of such report as they involved whole-cells (instead of enzymes) as biocatalysts. This list of example shows the diversity of approaches and applications. We argue that the incorporation of enzyme into/onto membranes represents the next important step in the direction of intensification; as it is both more challenging and emerging, we discuss this in more details in the following section.