Studies on Raw Hide and Skin:XVIII. Influence of Drying Conditions on Distribution of Nitrogenous Components in Skin
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概要
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By comparing the amounts of various nitrogenous components in skin after drying with those in each stage through beamhouse operation, the changes of properties of skin during drying by various methods were investigated. The back pieces of fresh calf skin were subjected to one of the following treatments: a) drying under vacuum at 23-25°without any other processing, b) agitating with 10% sodium chloride solution for 10 hrs, washing with water for 4 hrs and then drying under vacuum at 23-25°, c) acetone-dehydrating for 7 days with several renewals of acetone, followed by removal of the acetone under vacuum without any other processing and d) agitating with 10% sodium chloride solution for 10 hrs, washing with water for 4 hrs, and then acetone-dehydrating for 7 days.These dry-skin went through the beamhouse operation with usual method. In each stage through beamhouse operation, the distribution of nitrogenous components in skin was compared each other. The method, which was reported previously by the authors, was used forfractionating the nitrogenous components in skin.The results of this experiments show that in drying skin, the amounts of lime soluble nitrogenous components increased and the amounts of salt soluble protein decreased, but as for other nitrogenous components there was no change. And the properties of dry skin were influenced by drying condition and its pretreatment. Through the beamhouse operations, the progressive increase of the collagenous nitrogen contents in the sample d) was readily observed.
- 公益社団法人 日本畜産学会の論文
公益社団法人 日本畜産学会 | 論文
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