title: Investigation of pectin/starch hydrogel as a carrier for oral delivery of probiotic bacteria.
abstract: The present study highlights the fabrication of novel food-grade hydrogel particles based on pectin and starch for probiotic colon delivery. Lactobacillus plantarum ATCC:13643 (L. plantarum) cells were encapsulated in pectin/starch hydrogels by extrusion method. Four batches were formulated with different ratios of starch/pectin solutions. Optical and scanning electron microscopy obviously showed the random distribution of L. plantarum throughout the hydrogel network. The viability of encapsulated cells in simulated gastric fluid (SGF) and bile salt solution was significantly higher when compared to nonencapsulated cells. Results demonstrated that encapsulated cells in pectin/starch hydrogels were resistant against adverse conditions of the gastro-intestinal tract and bile salt solution compared to non-encapsulated cells. After sequential exposure to simulated gastric fluid (SGF) and simulated intestinal fluid (SIF) for 2h almost complete death of free cells was observed however the numbers of surviving cells were 5.15 and 6.67 Log CFU/g for pectin and pectin/starch hydrogel, respectively.
authors.affiliation: Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, Iran; Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran.
authors.forename: Alireza
authors.initials: A
authors.lastname: Dafe
authors.affiliation: Young Researchers and Elite Club, Maragheh Branch, Islamic Azad University, Maragheh, Iran. Electronic address: hosseinetemadi39@yahoo.com.
authors.forename: Hossein
authors.initials: H
authors.lastname: Etemadi
authors.affiliation: Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran.
authors.forename: Azita
authors.initials: A
authors.lastname: Dilmaghani
authors.affiliation: Polymer Research Laboratory, Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran.
authors.forename: Gholam Reza
authors.initials: GR
authors.lastname: Mahdavinia
mesh_terms: D000284:Administration, Oral; D001647:Bile Acids and Salts / Q000494:pharmacology; D032701:Biomimetics; D003106:Colon / Q000378:metabolism / Q000382:microbiology; D004337:Drug Carriers / Q000737:chemistry*; D020100:Hydrogels / Q000737:chemistry*; D007700:Kinetics; D048191:Lactiplantibacillus plantarum / Q000737:chemistry* / Q000187:drug effects / Q000378:metabolism / Q000502:physiology; D050296:Microbial Viability / Q000187:drug effects; D008958:Models, Molecular; D010368:Pectins / Q000737:chemistry*; D019936:Probiotics / Q000008:administration & dosage / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*
chemical_list: D001647:Bile Acids and Salts; D004337:Drug Carriers; D020100:Hydrogels; D010368:Pectins; D013213:Starch
keywords: Encapsulation; L. plantarum; Pectin; Probiotic delivery; Starch