Variations in the carotenoid and anthocyanin contents of Korean cultural varieties and home-processed sweet potatoes

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Title
Variations in the carotenoid and anthocyanin contents of Korean cultural varieties and home-processed sweet potatoes
Author(s)
H J Kim; W S Park; J Y Bae; S Y Kang; M H Yang; S Lee; Haeng Soon Lee; Sang Soo Kwak; M J Ahn
Bibliographic Citation
Journal of Food Composition and Analysis, vol. 41, pp. 188-193
Publication Year
2015
Abstract
The sweet potato is an important industrial crop and a source of food that contains useful dietary fiber and vitamins. Recently, orange- and purple-fleshed varieties have come under the spotlight due to their healthful components, carotenoids and anthocyanins, respectively. In this study, an HPLC-DAD method was applied to determine the carotenoid composition and content in nine Korean cultural varieties of sweet potato. Changes in carotenoid contents and composition were also observed during home-processing of an orange-fleshed cultivar with high carotenoid content (530 ± 60 μg/g of dry weight, DW as all- trans- β-carotene). A loss of the carotenoids was observed for all of the home-processing methods examined; the baked or boiled or steamed sweet potatoes had higher amounts of all-. trans-. β-carotene (246 ± 34, 253 ± 29 and 240 ± 21 μg/g DW, respectively) than pressure-cooked, sauteed and fried ones (194 ± 21, 201 ± 28 and 111 ± 19 μg/g DW, respectively). Interestingly, cis-isomer of the all-. trans-. β-carotene, 13 Z- β-carotene was found in elevated amounts in all of the processed samples, particularly in baked, pressure-cooked and steamed sweet potatoes compared to control. Variations in anthocyanin content in the nine cultural varieties and home-processed sweet potatoes were also determined by an HPLC-DAD method.
Keyword
13Z-β-CaroteneAll-trans-β-caroteneAnthocyaninsCarotenoidsFood analysisFood compositionHome-processingSweet potato
ISSN
0889-1575
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.jfca.2015.01.012
Type
Article
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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