アントシアニン含有食品の現状と機能性に関する研究(第2報) : 食品素材としてのパープル・ヤムの特徴

概要

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Purple yam is a plant containing anthocyanin, and cultivation is simple comparatively. But the preservation of a purple yam in winter season is difficult owing to much water. We examined usage as a coloring agent to food with this purple yam. As a result, we found that powder of purple yam could be stored for a long time. We planned to use powder of purple yam for the coloration of confectionery. The anthocyanin of purple yam reacted the acid contained in fruit, and purple changed to red, and becamed red as other sample, and the color was unchanged in the acidity. Even if we conserved this anthocyanin of purple yam and defrosted it, the balance of color was kept. Therefore, as the purple yam was same as pigment on the market, it could be used in food as a coloring agent of new nature. Accordingly we want to study more development of the product used purple yam in future.