鳴門わかめの物性とアルギン酸および金属含量
1976 年 42 巻 3 号 p. 337-341
詳細
1976 年 42 巻 3 号 p. 337-341
To elucidate the significance of ash-treatment in the processing of “Narutowakame”, a dried product of brown sea-weed Undaria pinnatifida, the alginate and metal contents together with some physical properties of specimens treated with wood-ash were compared with those of untreated specimens. The hardness and tensile strength of the ash-treated specimens were remarkably higher than those of the untreated ones. The water alginates were also richer in the treated specimens.
As a result of the ash-treatment, Ca in the residue increased remarkably while Na, K, and Mg in the water soluble alginate fraction decreased. From these results, it was assumed that the hardness of “Narutowakame” is, for the most part, due to the formation of water insoluble Ca alginates during the ash-treatment.
