Survival of Arabinoxylans-Alginate Microencapsulated Probiotics

Abstract:

In this research L. Plantarum，a probiotic bacterium，was encapsulated in the beads made from arabinoxylan（AX） and sodium alginate（SA） by the extrusion technique. The survival rate of microencapsulated L. Plantarum in simulated gastric juice and bile salt solution was evaluated，and the release of encapsulated L. Plantarum and the storage stability of encapsulated L. Plantarum at room temperature were also studied. The results indicated that the incorporated beads could improve entrapment efficiency. Compared with SA encapsulated L. Plantarum，the number of survival cells of AX and SA encapsulated L. Plantarum in the simulated gastric juice and high bile salt solution increased 1.46 and 1.08 log respectively. The incorporated beads decrease bacteria release rate in simulated upper gastrointestinal tract conditions and enhanced the storage stability. This study presents a good encapsulation system that protects probiotic L. Plantarum during exposure to adverse environment conditions.