Document Detail


Antioxidant capacity and antioxidant content in roots of 4 sweetpotato varieties.
MedLine Citation:
PMID:  20629859     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The antioxidant contents (beta-carotene, chlorogenic acid, and vitamin C) as well as the antioxidant capacity (ORAC, FRAP, and ABTS) of 4 sweetpotato varieties were measured in this study. The sweetpotato varieties were cultivated under different water regimes and also subjected to thermal processing. The results show that the 2 orange-fleshed varieties (Resisto and W-119) contain significant more beta-carotene, chlorogenic acid, and vitamin C than the 2 cream-fleshed varieties (Bosbok and Ndou). Thermal processing decreased the carotenoid and vitamin C content of all the varieties but increased the chlorogenic acid content and antioxidant capacity. Drought stress appears to increase the beta-carotene, vitamin C, and chlorogenic acid contents as well as the antioxidant capacity of some of the sweetpotato varieties, especially W-119.
Authors:
Fanie Rautenbach; Mieke Faber; Sunette Laurie; Robert Laurie
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of food science     Volume:  75     ISSN:  1750-3841     ISO Abbreviation:  J. Food Sci.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-07-15     Completed Date:  2010-10-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0014052     Medline TA:  J Food Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  C400-5     Citation Subset:  IM    
Affiliation:
Antioxidant Research Laboratory, Faculty of Applied Sciences, Cape Peninsula Univ. of Technology, P.O. Box 652, Cape Town, South Africa. rautenbachf@cput.ac.za
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MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Antioxidants / analysis*,  metabolism
Ascorbic Acid / analysis,  metabolism
Chlorogenic Acid / analysis,  metabolism
Food Handling / methods
Hot Temperature
Ipomoea batatas / chemistry*,  metabolism
Plant Roots / chemistry*,  metabolism
Water
beta Carotene / analysis,  metabolism
Chemical
Reg. No./Substance:
0/Antioxidants; 327-97-9/Chlorogenic Acid; 50-81-7/Ascorbic Acid; 7235-40-7/beta Carotene; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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