Protein and amino acid composition of domestic potato cultivars = 국내산 감자 주요 품종의 아미노산 및 단백질 조성

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Title
Protein and amino acid composition of domestic potato cultivars = 국내산 감자 주요 품종의 아미노산 및 단백질 조성
Author(s)
O Y Kwon; M Y Kim; C W Son; X W Liu; Hyoung-Chin KimWoon Kee Yoon; Hwan Mook Kim; M R Kim
Bibliographic Citation
Journal of Korean Society for Food Science & Nutrition, vol. 37, no. 1, pp. 117-123
Publication Year
2008
Abstract
The protein profiles of domestic potato cultivars were evaluated for total protein determination, amino acid composition, SDS-PAGE analysis and scanning densitometry. There were statistically significant differences in the levels of amino acids among potato cultivars. Total nitrogen amount was also significantly different among cultivars, ranging from 1.27 to 1.64%. SDS-PAGE analysis showed that there were significant differences in the content of major potato proteins such as papatin (40 kDa), trypsin inhibitor (20 kDa) and protease inhibitor (15 kDa) among cultivars (p<0.05). The amount of papatin among cultivars with a range of 22.16 to 25.81 mg/g d.w. was higher in Jopung, Shepody and Superior, whereas the amount of protease inhibitors including 15 kDa and 20 kDa was the highest in Jopung (37.0%). The Shepody contains the highest amount of papatin (25.8%) and the lowest of trypsin inhibitor (5.22%). Thus, it is suggested that Shepody is the most desirable cultivar for better nutrition based on the protein profile.
Keyword
potato cultivarprotein profileSDS-PAGE
ISSN
I000-0088
Publisher
South Korea
DOI
http://dx.doi.org/10.3746/jkfn.2008.37.1.117
Type
Article
Appears in Collections:
Ochang Branch Institute > Division of Bioinfrastructure > 1. Journal Articles
Ochang Branch Institute > Division of Bioinfrastructure > Laboratory Animal Resource Center > 1. Journal Articles
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