| Effect of carrot (Daucus carota) microstructure on carotene bioaccessibilty in the upper gastrointestinal tract. 1. In vitro simulations of carrot digestion. | |
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MedLine Citation:
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PMID: 20698537 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Studies investigating carotene bioaccessibility (release from the food matrix to a solubilized form) directly from plant material during the process of digestion are scarce, mainly due to the difficulties associated with obtaining such material. Therefore, this paper examines the relationship between tissue microstructure and carotene bioaccessibility using an in vitro digestion model. Dietary oil provides a pool for the initial solubilization. Therefore, carotene partitioning into an emulsified oil phase was assessed using raw carrot tissue and carrot tissue subjected to various degrees of heating and particle size reduction and, in all cases, was found to be greatly reduced compared with juiced carrot. Carotene bioaccessibility was found to be greater from raw tissues than heated tissues of the same size. This is because heating increases the propensity for intact cells to separate, effectively encapsulating the carotene. Although the gross structure of the tissues was found to be relatively unaffected by in vitro digestion, at the cellular level some cell-wall swelling and cell death were observed, particularly close to the surfaces of the tissue. This study suggests that cell-wall rupture prior to digestion is an absolute requirement for carotene bioaccessibility in the upper intestine and that heating does not enhance carotene release from intact cells. |
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Authors:
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Elizabeth A Tydeman; Mary L Parker; Martin S J Wickham; Gillian T Rich; Richard M Faulks; Michael J Gidley; Annette Fillery-Travis; Keith W Waldron |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 58 ISSN: 1520-5118 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-02 Completed Date: 2010-12-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 9847-54 Citation Subset: IM |
Affiliation:
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Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Biological Availability Carotenoids / pharmacokinetics* Daucus carota / chemistry* Gastrointestinal Tract / metabolism* Humans |
| Grant Support | |
ID/Acronym/Agency:
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//Biotechnology and Biological Sciences Research Council |
| Chemical | |
Reg. No./Substance:
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36-88-4/Carotenoids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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