EXTRACTION OF NASUNINE OR THE LIKE AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for extraction and method for production of nasunine or the like by establishing the technology that can store the pericarp of eggplant without deterioration for a long period of time and paying attention to nasunine in order to develop products that can arbitrarily be produced from the stored pericarp and by utilizing the waste grade of eggplants.

SOLUTION: The pericarp of eggplant is peeled off and the peels are heated to deactivate polyphenol-oxidase, the treated pericarp is stored at a temperature of lower than 10°C. The stored eggplant rind is soaked in an acidic aqueous solution of which the pH is kept at lower than 2.5 to extract anthocyanins including nasunine. After filtration, the extract is subjected to a known isolation technique to collect the fraction that is eluted with a 30 v/v % ethanol solution. The figure is an analytical chart of nasunine in high performance liquid chromatography.

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