Abstract
In a previous paper1) the authors reported that the ether-soluble lipids and water-soluble fraction separated from dried purple laver were effective for reducing plasma cholesterol levels in rats. The authors carried out the fractionation of purple laver, Porphyra tenera, using different concentrations of ethanol (Fig. 1) or ion exchange resin (Fig. 2). After feeding experiments the results indicated that absolute ethanol and 80% ethanol-soluble fractions from water-soluble substances were effective (Table 4). The fraction adsorbed by Amberlite IR-120 effectively lowered plasma cholesterol, whereas the effluent fraction did not show any effects (Table 5). Several qualitative tests suggested that stachydrine contained in purple laver is one of effective substances.
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