title: Relation between particle size and carotenoid bioaccessibility in carrot- and tomato-derived suspensions.
abstract: To study the effect of particle size on the relative all-E-β-carotene and all-E-lycopene bioaccessibility in carrot- and tomato-derived suspensions, respectively, an in vitro digestion approach including oil was used. Adding olive oil (2%) during digestion, especially as an oil-in-water emulsion, resulted in a substantial increase in carotenoid uptake in the micellar phase. Carotenoid bioaccessibility decreased with average particle size. Only particles smaller than an individual cell resulted in high bioaccessibility values, pointing out the importance of the cell wall as the main barrier for carotenoid uptake. The relation obtained between particle size and bioaccessibility was used to predict the carotenoid bioaccessibility in carrot- and tomato-derived purées. These predictions indicated that carotenoid bioaccessibility in plant-based food suspensions is not only determined by the cell wall integrity (related with particle size) but is also affected by interactions between the structural compounds of the complex food matrix.
authors.affiliation: Laboratory of Food Technology and Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, PB 2457, 3001 Leuven, Belgium.
authors.forename: Katlijn R N
authors.initials: KR
authors.lastname: Moelants
authors.forename: Lien
authors.initials: L
authors.lastname: Lemmens
authors.forename: Marijke
authors.initials: M
authors.lastname: Vandebroeck
authors.forename: Sandy
authors.initials: S
authors.lastname: Van Buggenhout
authors.forename: Ann M
authors.initials: AM
authors.lastname: Van Loey
authors.forename: Marc E
authors.initials: ME
authors.lastname: Hendrickx
mesh_terms: D002338:Carotenoids / Q000737:chemistry* / Q000493:pharmacokinetics*; D018552:Daucus carota / Q000737:chemistry*; D005511:Food Handling / Q000379:methods*; D000077276:Lycopene; D018551:Solanum lycopersicum / Q000737:chemistry*; D010316:Particle Size; D013535:Suspensions; D019207:beta Carotene / Q000737:chemistry / Q000493:pharmacokinetics
chemical_list: D013535:Suspensions; D019207:beta Carotene; D002338:Carotenoids; D000077276:Lycopene