ゲラニイン含有植物の加工処理と生成物の解析

概要

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The leaves of two Euphorbiaceous plants (Sapium sebiferum and Phyllanthus urinaria), which contain a large amount of geraniin, were autoclaved. The contents of four polyphenol compounds (gallic acid, corilagin, ellagic acid and breviforin carboxylic acid) in the leaves remarkably increased, while that of geraniin decreased. These four polyphenols were presumed to be originated from the degradation of geraniin. DPPH radical scavenging activity of these four polyphenols seemed to be almost identical with that of geraniin. Taking into account the stability of these polyphenols in heating process, autoclaved leaves of these two plants seemed to be good materials for new food ingredients. Autoclaved leaves of S. sebiferum and P. urinaria. were treated with four Bacillus strains. In the process, the contents of four polyphenols were readily decreased and radical scavenging activities of the treated leaves also decreased. Autoclaved leaves of S. sebiferum were also treated with Penicillium sp., Fusarium solani or Rosellinia necafrix. In the treatment, the contents of polyphenols in the leaves were gradually decreased, while their radical scavenging activities were not so much decreased. This result suggested the existence of some other unknown metabolites having strong radical scavenging activity in the leaves.
2006-12-30