This study intended to investigate the impact of alginate encapsulation with Thai herbal extracts including
cashew flower, pennywort and yanang on viability of probiotic bacteria suspended in fruit juices
(i.e. mulberry, maoberry, longan and melon juices) and stirred yoghurt during storage at 4 °C. The strains
of probiotics used in this work were Lactobacillus casei 01, Lactobacillus acidophilus LA5 and Bifidobacterium
lactis Bb-12. The results displayed that the surviving population of L. casei 01 cells entrapped
with 0.05% (w/v) cashew flower extract were significantly higher than those encapsulated with pennywort
and yanang extracts, after storage for 30 days. Accordingly, this level of cashew flower extract
was selected to immobilize the cultures before inoculation into fruit juices and yoghurt, in order to
comparison with green tea extract (a standard plant extract). Upon storage, cashew flower and green tea
extracts noticeably improved the stability of probiotic beads in all the products, as compared to the
controls. Encapsulated L. casei 01 and B. lactis Bb-12 showed better survival than encapsulated L. acidophilus
LA5. The diminution of pH values in each product was also observed.
This study intended to investigate the impact of alginate encapsulation with Thai herbal extracts includingcashew flower, pennywort and yanang on viability of probiotic bacteria suspended in fruit juices(i.e. mulberry, maoberry, longan and melon juices) and stirred yoghurt during storage at 4 °C. The strainsof probiotics used in this work were Lactobacillus casei 01, Lactobacillus acidophilus LA5 and Bifidobacteriumlactis Bb-12. The results displayed that the surviving population of L. casei 01 cells entrappedwith 0.05% (w/v) cashew flower extract were significantly higher than those encapsulated with pennywortand yanang extracts, after storage for 30 days. Accordingly, this level of cashew flower extractwas selected to immobilize the cultures before inoculation into fruit juices and yoghurt, in order tocomparison with green tea extract (a standard plant extract). Upon storage, cashew flower and green teaextracts noticeably improved the stability of probiotic beads in all the products, as compared to thecontrols. Encapsulated L. casei 01 and B. lactis Bb-12 showed better survival than encapsulated L. acidophilusLA5. The diminution of pH values in each product was also observed.
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