کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6403470 | 1330894 | 2014 | 6 صفحه PDF | دانلود رایگان |
- GOS provided a good protection to the encapsulated probiotics in simulated digestive system.
- Level of encapsulated probiotics containing GOS was high in yogurt and orange juice during storage.
- The number of encapsulated probiotics and prebiotics was above therapeutic minimum level.
Galactooligosaccharides (GOS) and inulin were added during microencapsulation of Lactobacillus acidophilus 5 and Lactobacillus casei 01 in alginate beads coated with chitosan at the concentrations of 0, 0.5, 1.0 and 1.5%. Addition of prebiotics significantly (p < 0.05) increased the bead size by approximately 3.8%. The presence of GOS (0.3%) in the microencapsulation provided the best protection with only 3.1 and 2.9 logs reduction for L. acidophilus 5 and L. casei 01, respectively, after incubation in simulated gastric juice (pH 1.55), followed by simulate intestinal juice containing 0.6% bile salt. The viabilities of microencapsulated probiotics containing 1.5% GOS in commercial yogurt and orange juice were also performed at refrigerated storage for 4 weeks. In yogurt, the numbers of cells with GOS were higher than those of without GOS by approximately 1.1 and 0.4 logs for L. acidophilus 5 and L. casei 01, respectively. In orange juice, the numbers of cells with GOS were higher than those of without GOS by approximately 0.5 and 0.4 logs for L. acidophilus 5 and L. casei 01, respectively. The numbers of probiotic bacteria were maintained above the recommended therapeutic minimum (107 cfu gâ1 or mLâ1 of product) throughout the storage in both products.
Journal: LWT - Food Science and Technology - Volume 57, Issue 2, July 2014, Pages 761-766