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| Role of mechanical forces in the stomach phase on the in vitro bioaccessibility of beta-carotene | |
| Verrijssen, T. A. J. | |
| 2014 | |
| Source Publication | Food Research International
 |
| ISSN | 0963-9969 |
| Volume | 55Pages:271-280 |
| Abstract | The objective of this study was to examine the impact of flow conditions during the stomach phase of a simple in vitro digestion procedure on the microstructural properties and the beta-carotene bioaccessibility of carrot-based model food systems containing oil and different barriers for beta-carotene bioaccessibility. A 'periodic forces' stomach model, in which the flow characteristics (measured by Particle Image Velocimetry) corresponded well with experimental in vivo and in silica literature data, was successfully developed and implemented and used in a two-step static in vitro digestion procedure. This stomach model was compared with a conventional end-over-end rotation stomach model in which flow conditions were uncontrolled. Both models in combination with an end-over-end intestinal phase revealed differences in beta-carotene bioaccessibility of carrot-based fractions due to the presence of different barriers (the plant chromoplast structure and/or the cell wall). Absolute beta-carotene bioaccessibility values however differed between the models. The periodic forces stomach flow behavior lowered the beta-carotene bioaccessibility in the beta-carotene-enriched emulsion (72% versus 45%), the chromoplast fraction (66% versus 36%) and the large cell cluster fraction (22% versus 13%). The model also resulted in the presence of clusters of small oil droplets interspersed by surface-active compounds while large, coalesced oil droplets (D(v;0.9) of 189 mu m) were observed after digestion in the end-over-end stomach model. As a consequence of the periodic forces stomach flow behavior also a slightly higher disintegration of carrot particles (to a D(v;0.9) of 450 mu m instead of 492 mu m) was observed which was however not linked to a higher beta-carotene bioaccessibility in carrot cell clusters. (C) 2013 Elsevier Ltd. All rights reserved. |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/8595 |
| Collection | 公共技术服务中心主要仪器相关文献_植物活体成像系统 |
| Recommended Citation GB/T 7714 | Verrijssen, T. A. J.. Role of mechanical forces in the stomach phase on the in vitro bioaccessibility of beta-carotene[J]. Food Research International,2014,55:271-280. |
| APA | Verrijssen, T. A. J..(2014).Role of mechanical forces in the stomach phase on the in vitro bioaccessibility of beta-carotene.Food Research International,55,271-280. |
| MLA | Verrijssen, T. A. J.."Role of mechanical forces in the stomach phase on the in vitro bioaccessibility of beta-carotene".Food Research International 55(2014):271-280. |
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