Open AccessEffect of psyllium and gum Arabic biopolymers on the survival rate and storage stability in yogurt of Enterococcus durans IW 3 encapsulated in alginate
Author(s) -
Nami Yousef,
Haghshenas Babak,
Yari Khosroushahi Ahmad
Publication year - 2017
Publication title -
food science and nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 27
ISSN - 2048-7177
DOI - 10.1002/fsn3.430
Subject(s) - gum arabic , probiotic , food science , chemistry , sodium alginate , prebiotic , arabic , bacteria , biology , sodium , organic chemistry , genetics , linguistics , philosophy
Different herbal biopolymers were used to encapsulate Enterococcus durans IW 3 to enhance its storage stability in yogurt and subsequently its endurance in gastrointestinal condition. Nine formulations of encapsulation were performed using alginate ( ALG ), ALG ‐psyllium ( PSY ), and ALG ‐gum Arabic ( GA ) blends. The encapsulation efficiency of all formulations, tolerance of encapsulated E. durans IW 3 against low pH /high bile salt concentration, storage lifetime, and release profile of cells in natural condition of yogurt were evaluated. Result revealed 98.6% encapsulation efficiency and 76% survival rate for all formulation compared with the unencapsulated formulation cells (43%). The ALG ‐ PSY and ALG ‐ GA formulations have slightly higher survival rates at low pH and bile salt condition (i.e., 76–93% and 81–95%, respectively) compared with the ALG formulation. All encapsulated E. durans IW 3 was released from the prepared beads of ALG after 90 min, whereas both probiotics encapsulated in ALG ‐ GA and ALG ‐ PSY were released after 60 min. Enterococcus durans IW 3 was successfully encapsulated in ALG , ALG ‐ GA , and ALG ‐ PSY beads prepared by extrusion method. ALG ‐ GA and ALG ‐ PSY beads are suitable delivery carriers for the oral administration of bioactive compounds like probiotics. The GA and PSY gels exhibited better potential for encapsulation of probiotic bacteria cells because of the amendment of ALG difficulties and utilization of therapeutic and prebiotic potentials of these herbal biopolymers.