Hydroxyanthraquinones in soil |
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| Authors: | Yoshio Matsui Kyoichi Kumada |
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| Institution: | Faculty of Agriculture, Nagoya University , Nagoya , Japan |
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| Abstract: | (1) Seven hydroxyanthraquinone pigments were separated from Sochiken soil 1 (Kuroboku soil). Chrysotalunin, chrysophanoi, chrysazin, and skyrln were identified by spectroscopy and co-chromatography with authentic compounds. The presence of oxyskyrin was presumed by spectroscopy and color reactions. (2) A homologue of 4,9-dihydroxyperylene-3, 10-quinone was also detected. (3) The amounts of hydroxyanthraqulnones in eight soils of different types were determined by colorimetry using chrysotalunin as a standard pigment. Their amounts varied from 3 to 11 ppm. (4) The main pigment extracted from most soils was chrysotalunin, though it was not detected in Miyahara, Higashiyama, and Kisokoma soils. |
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