高知県室戸沖の海洋深層水から調製した塩の水分収着挙動

概要

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The moisture sorption characteristics of salt samples prepared from deep seawater were compared with those from surface seawater. The moisture content of the seawater salt samples fitted well with Pilosof's equation with correlation coefficients in the range of 0.981 〜 0.999. The samples also showed non-equilibrium moisture contents at a water activity higher than Aw 0.75, even though being kept for more than 3 months after incubation. Only the moisture content below Aw 0.64 should therefore be applied in the GAB equation. The correlation coefficients from the GAB equation were 0.985 〜 0.999 for the deep sea-water salt and 0.967 〜 0.999 for the surface salt. The moisture content of the seawater salt samples could be estimated by using the GAB equation with a deviation of less than Ig/lOOg of-dry matter. A comparison of the moisture content of the seawater salt samples with that of an NaCl reagent showed a similarly greater moisture content in all of the deep seawater salt samples.
日本調理科学会の論文
2004-08-20