On the viability, cytotoxicity and stability of probiotic bacteria entrapped in cellulose-based particles

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Probiotics are increasingly gaining popularity in vast food applications due to their recognized health benefits to the host. However, their passage through the gastrointestinal (GI) tract is not smooth and a significant number of physiological barriers (e.g. low pH, bile salts, enzymes, peristaltic movements, etc.) may considerably affect their viability. The entrapment of probiotics in protective matrices, such as hydrogel particles, is a feasible approach to minimize cell death. Therefore, in this work, novel cellulose/chitosan-based particles have been developed to entrap model probiotic Lactobacillus rhamnosus GG. The particle aging, storing and stability was studied at different temperatures and in simulated GI fluids with and without cross-linking agents or protein and lipid additives. Moreover, the effect of the particles on a model intestinal cell line was evaluated. The formulations containing casein displayed the best bacterial survival/culturability when exposed to the GI fluids. Overall, the storage and viability of the probiotics were observed to be improved in the different biopolymer-based systems, generally presenting a low toxicity profile to the cell line. Thus, the particles, which were based on carboxymethyl cellulose and chitosan, may be regarded as interesting matrices for probiotic encapsulation and delivery in food products.

Detaljer

Författare
  • Björn Lindman
  • Bruno Medronho
  • Poonam Singh
  • Tiago dos Santos
  • Isabel Nunes-Correia
  • Pedro Granja
  • Maria Miguel
Externa organisationer
  • University of Coimbra
  • Mittuniversitetet
  • University of Algarve, Portugal
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Naturvetenskap
Originalspråkengelska
Sidor (från-till)457-465
Antal sidor9
TidskriftFood Hydrocolloids
Volym82
StatusPublished - 2018 sep
PublikationskategoriForskning
Peer review utfördJa
Externt publiceradJa