Efficacy of polymer coating of probiotic beads suspended in pressurized and pasteurized longan juices on the exposure to simulated gastrointestinal environment

Chaikham, Pittaya, Apichartsrangkoon, Arunee, George, Trevor and Jirarattanarangsri, Wachira (2013) Efficacy of polymer coating of probiotic beads suspended in pressurized and pasteurized longan juices on the exposure to simulated gastrointestinal environment. International Journal of Food Sciences and Nutrition, 64 (7). pp. 862-869. ISSN 0963-7486

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Abstract

Alginate-coated Lactobacillus acidophilus LA5 or Lactobacillus casei 01 was recoated with either 0.1–0.5% (w/v) alginate or 0.05–0.15% (w/v) poly-L-lysine (PLL) plus 0.2% (w/v) alginate or 5–15% (w/v) gelatin, after which they were determined for survivability in gastric or bile longan juices. The morphology of encapsulated probiotic cells illustrated that recoated beads with 0.5% alginate showed a more compact surface and a greater protective effect than other recoating materials. The recoated beads with 0.5% alginate and 0.05–0.15% PLL plus 0.2% alginate of both strains showed the highest viability in gastric longan juice. In bile longan juice, only 0.5% alginate showed the best protection for both recoated beads. When considering the storage stability, encapsulated L. acidophilus LA5 exhibited a higher viable count than those of the free cells, whereas L. casei 01 showed equivalent viability of both free and double-coated cells. Based on the impact of pressurization or pasteurization, both processed juices gave rise to equivalent survivability of the probiotic cells during storage.

Item Type:	Article
Uncontrolled Keywords:	encapsulation, gastrointestinal tract, longan juice, polymer coating, probiotics
Subjects:	B200 Pharmacology, Toxicology and Pharmacy B400 Nutrition C900 Others in Biological Sciences
Department:	Faculties > Health and Life Sciences > Applied Sciences
Depositing User:	Ay Okpokam
Date Deposited:	08 Nov 2013 17:03
Last Modified:	12 Oct 2019 18:28
URI:	http://nrl.northumbria.ac.uk/id/eprint/14543

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