4. 生体高分子ゲルの凍結・融解(昭和61年度第32回凍結及び乾燥研究会研究報告)

概要

論文の詳細を見る
Freeze-thawing behavior of biopolymer gels, different from sols or aqueous solutions, was studied by using differential scanning calorimetry (DSC). Water compartmentalized by the networks of gelatin gels or starch gels remained unfrozen when rapidly cooled, and crystallized during subsequent warming if the size of compartment was appropriately small. Methylcellulose-water system, rapidly cooled from the sol state, showed only a broad endothermic peak due to ice melting during subsequent warming. Thawing behavior of this polymer system rapidly cooled from the gel state precedently was different, and a sharp endothermic peak was observed beside the broad one. The sharp peak may be due to water excluded from the vicinity of the polymer matrices when junction zones are formed in the gelling process.
低温生物工学会の論文
1986-08-30