The incomplete digestion method may be used to treat the cattlehide sample.
用非完全硝化法处理牛皮样品,即在90~100℃的温度下,用浓硝酸和过氧化氢消解,直至消化液呈透明淡黄色,再加入乳化剂OP溶解消化过程中所产生的油脂,可获得均匀的样品乳浊液。
Based on that,some recent technologies and methods on extraction of collagens from pigskin,calf skin and fish skin are introduced.
简要介绍了动物皮胶原的结构组成和物化性质,着重综述了最近几年国内外从猪皮、牛皮和鱼皮中提取胶原的工艺方法。
Preparation of superabsorbents with kraft paper and its structure characterization;
牛皮纸制备高吸水树脂及结构表征
Results indicated the conditions including NaOH 18%, H_2O_2 3%, highest temperature 165℃, heat preservation time of highest temperature 60min, Under these conditions, the physical performance of AHP pulp is higher than that A level kraft paper.
实验结果表明,在用碱量18%,H_2O_2用量3%,最高温度165℃下保温60min,成浆物理性能指标达到并超过A级牛皮纸技术指标。
The general situation of developmenet of kraft paper was introduced.
本文分析了牛皮纸的发展概况,讨论了发展牛皮纸新品种的一些生产技术问题。