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Influence of chromoplast morphology on carotenoid bioaccessibility of carrot, mango, papaya, and tomato.
MedLine Citation:
PMID:  22980866     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Based on the observation of outstanding dissimilarities of the morphology of pigment-containing chromoplasts in nutritionally important carotenoid sources, the bioaccessibility (BA) of carotenoids from edible portions of carrot, mango, papaya, and tomato was compared using an in vitro digestion model. While carrot and tomato contained large carotenoid crystals clearly visible by light microscopy, mango and papaya contained different types of carotenoid-bearing structures. Particularly, β-carotene is deposited in globular and tubular elements in papaya and mango chromoplasts, where carotenoids accumulate in a lipid-dissolved and liquid-crystalline form, respectively. The highest BA of β-carotene was found for mango (10.1%), followed by papaya (5.3%), tomato (3.1%), and carrot (0.5%). In our digestion model, differences between total lycopene BA from papaya and tomato were insignificant, possibly since both pigments occur in a solid crystalline deposition form in both fruits. Furthermore, the BA of lutein, β-cryptoxanthin, and β-cryptoxanthin esters was shown to be superior to that of the carotenes from the respective food sources. The effect of lipid addition to the different food sources was studied. Although BA was enhanced for most carotenoids, the above-mentioned ranking of BAs of β-carotene remained unchanged after lipid addition. Consequently, the physical form of carotenoid deposition in plant chromoplasts is suggested to have major impact on their liberation efficiency from the food matrices.
Authors:
Ralf M Schweiggert; Dominik Mezger; Franziska Schimpf; Christof B Steingass; Reinhold Carle
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Publication Detail:
Type:  Journal Article     Date:  2012-07-16
Journal Detail:
Title:  Food chemistry     Volume:  135     ISSN:  0308-8146     ISO Abbreviation:  Food Chem     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-09-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702639     Medline TA:  Food Chem     Country:  England    
Other Details:
Languages:  eng     Pagination:  2736-42     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Institute of Food Science and Biotechnology, Hohenheim University, D-70599 Stuttgart, Germany. Electronic address: rswg@uni-hohenheim.de.
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