スサビノリの脂質について-III : カロチノイド成分
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Carotenoids which were extracted in the previous paper from “Nori”, a dry product of Porphyra yezoensis, were separated into following six pigment groups on alumina column (Figs. 1, 2 and 3, and Table 1). 1) The V pigment which amounted to 59-65% of the total carotenoids was not identical with all-trans lutein but with probable mono-cis isomer (Figs. 4, 5 and 6). 2) The II pigment was β-carotene amounting to 19-24% of the total. 3) Compared with chromatographic results of β-carotene samples which were kept in solvents for one week or four months at room temperature, the I (4-9%) and III (1TO ?? 3%) pigments were concluded to be stereoisomers of β-carotene (Figs. 7 and 8). 4) The IV and VI pigments were not under enough examination. The former was presumed to contain decomposed β-carotene and mono-hydroxy derivatives, however. 5) Other carotenoids such as α-carotene, zeaxanthin etc. could not be observed, even if any, by the chromatographic method shown in Figs. 1 and 2.
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