Development of Microencapsulation Delivery System for Long-Term Preservation of Probiotics as Biotherapeutics Agent

Figure 4

Extrusion technologies: simple needle droplet generator that usually is air driven (a) and pinning disk (b). The probiotic cells are added to the hydrocolloid solution and dripped through a syringe needle or a nozzle spray machine in the form of droplets which are allowed to free fall into a hardening solution such as calcium chloride.