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

Huq, Tanzina; Fraschini, Carole; Khan, Avik; Riedl, Bernard; Bouchard, Jean; Lacroix, Monique (2017). Alginate based nanocomposite for microencapsulation of probiotic: Effect of cellulose nanocrystal (CNC) and lecithin Carbohydrate Polymers , vol. 168 . p. 61-69. DOI: 10.1016/j.carbpol.2017.03.032.

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Résumé

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 20 min 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.

Type de document: Article
Mots-clés libres: Alginate; Cellulose nanocrystals; Freeze dryingl; Microcapsule; Probiotic; Cellulose; Cellulose derivatives; Encapsulation; Lecithin; Microstructure; Nanocrystals; Cellulose nano-crystals; Cellulose nanocrystal (CNC); Compression strength; Lactobacillus rhamnosus; Microcapsules; Probiotics; Storage condition
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 22 févr. 2019 15:32
Dernière modification: 22 févr. 2019 15:32
URI: http://espace.inrs.ca/id/eprint/5379

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