石灰処理によるクロム革からのゼラチンの収率と品質におよぼす抽出液のpHの影響

抄録

This paper describes the influence of extraction pH on the yield and the quality of gelatin extracted from chrome-tanned leather treated with lime. Gelatin could be extracted from the solution of pH below 4 and above 7, whereas could not be extracted at the pH range of about 4-7. The yield was related to the thermal denaturation temperature of the lime-treated leather in the solution. The molecular weight of gelatin extracted at pH above 7 was high, while that of gelatin extracted at pH below 4 was low.