Alginate based nanocomposite for microencapsulation of probiotic: Effect of cellulose nanocrystal (CNC) and lecithin.

Tanzina Huq 1 Carole Fraschini 2 Avik Khan 3 Bernard Riedl 4 Jean Bouchard 2 Monique Lacroix 1
1 INRS-IAF - Institut Armand Frappier
2 FPInnovations
3 UNB - University of New Brunswick
4 Université Laval
Abstract : Probiotic (Lactobacillus rhamnosus ATCC 9595) was encapsulated in alginate-CNC-lecithin microbeads to produce nutraceutical microcapsules. Addition of CNC and lecithin in alginate microbeads (ACL-1) improved the viability of L. rhamnosus during gastric passage and storage. The compression strength of the freeze-dried ACL-1 microbeads improved 40% compared to alginate microbeads alone. Swelling studies revealed that addition of CNC and lecithin in alginate microbeads decreased (around 47%) the gastric fluid absorption but increased the dissolution time by 20min compared to alginate microbeads (A-0). During transition through the gastric passage, the viability of L. rhamnosus in dried ACL-1 microbeads was increased 37% as compared to A-0 based beads. At 25 and 4°C storage conditions, the viability of L. rhamnosus encapsulated in ACL-1 microbeads decreased by 1.23 and 1.08 log respectively, whereas the encapsulation with A-0 microbeads exhibited a 3.17 and 1.93 log reduction respectively.
Keywords : Alginate Cellulose nanocrystals Freeze drying Microcapsule Probiotic
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Journal articles
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https://hal-riip.archives-ouvertes.fr/pasteur-01534655
Contributor : Michel Courcelles <>
Submitted on : Wednesday, June 7, 2017 - 8:54:47 PM
Last modification on : Monday, October 8, 2018 - 5:44:05 PM

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Tanzina Huq, Carole Fraschini, Avik Khan, Bernard Riedl, Jean Bouchard, et al.. Alginate based nanocomposite for microencapsulation of probiotic: Effect of cellulose nanocrystal (CNC) and lecithin.. Carbohydrate Polymers, Elsevier, 2017, 168, pp.61-69. ⟨10.1016/j.carbpol.2017.03.032⟩. ⟨pasteur-01534655⟩

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