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J.Health Sci., 47(2), 89-93, 2001
Relationship Between Cardiac Glycoside Contents and Color of Corchorus olitorius Seeds
Hiroshi Matsufuji,*,a Shinobu Sakai,a Makoto Chino,a Yukihiro Goda,b Masatake Toyoda,b and Mitsuharu Takedaa
aCollege of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan and bNational Institute of Health Sciences (NIHS), 1-18-1 Kamiyouga, Setagaya-ku, Tokyo 158-8501, Japan
The relationship between the cardiac glycoside contents in Corchorus olitorius seeds and the seed color was examined. The seed color was assigned a shade (color value) (L value in UCS system). The dark grayish green seeds, showing lower L value, contained more cardiac glycosides than dark grayish yellow seeds showing higher L value. When the total cardiac glycoside contents were plotted against the L values, a positive correlation (r = -0.913) was observed. Also, there was a higher content ratio of strophanthidin glycosides (erysimoside and olitoriside) in the seeds showing lower L value, while there was a lower content ratio of digitoxigenin glycosides (coroloside and glucoevatromonoside) in the seeds showing lower L value.
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