@article{oai:repository.naro.go.jp:00001673,
 author = {永田, 雅靖 and NAGATA, Masayasu},
 journal = {野菜茶業研究所研究報告, Bulletin of the National Institute of Vegetable and Tea Science},
 month = {Mar},
 note = {A simple method for the estimation of β-carotene concentration in acetone extracts of spinach was newly developed. The principle of this method depended on the difference in visible absorption spectra of chlorophylls and carotenoids. The concentration of β-carotene can be obtained through the calculation with the absorbances at 479, 645 and 663 nm. The equation, the correlation coefficient between prediction and measurement (r), and the standard error (SE) are as follows. β-Carotene (mg/L) = 0.854A_479-0.312A_645+0.039A_663-0.005 (r=0.992, SE=0.0096mg/L)Only an ordinary spectrophotometer is necessary to use this method, and it is easy enough to be used for many samples.},
 pages = {1--5},
 title = {ホウレンソウに含まれる β-カロテンの分光光度計を用いた簡便定量法},
 volume = {8},
 year = {2009},
 yomi = {ナガタ, マサヤス}
}