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- hydrolysable tannin extract 水解类栲胶
- hydrolysable tannin extracts 水解类栲胶
- Hydrolysable tannin may be degraded to glucose,gallic acid,ellagic acid and valonia acid in the acid condition. 水解类植物鞣质在酸性条件下能降解,其降解产物可起到还原、蒙囿以及与金属盐络合的作用。
- The method of sulfomethylation modification of bayberry tannin extract was investigated. 研究了毛杨梅栲胶的磺甲基化改性方法。
- Their combination with tanning agents Cr, Al, HCHO and vegetable tannin extract was also studied. 同时研究了它们与铬、铝、甲醛和栲胶等鞣剂的结合稳定性及其产生的助鞣作用。
- Influencing factor was discussed for tannin extract solution absorb and regenerate by tannin extract method in production. 主要讨论栲胶法脱硫在生产中对栲胶溶液吸收和再生的诸多影响因素。
- Using the syntan to pretan vegetable-tanned sole leather ,the quantity of tannin extract can be reduced in vegetable tanning. 该合成鞣剂用于植鞣底革的预鞣,可减少植鞣时栲胶的用量。
- The standard method of determining tannin was used to analyze intensive sulfitation tannin extract and the results showed there was only 3. 应用鞣质测定的标准方法对重度亚硫酸化改性栲胶进行分析;其鞣质含量仅为3.;2%25;而鞣质的定性试验却表明滤液中仍存在大量的鞣质。
- hydrolysable tannin constituents 可水解丹宁
- Vegetable tannin extracts have been widely used in leather industry. 摘要栲胶已在制革工业获得了广泛的应用。
- There are two groups of hydrolysable tannins: gallotannins and ellagitannins on the basis of structural characteristics. 根据水解单宁结构特性的差异，又将其分为棓单宁和鞣花单宁。
- Skin of curry raw material basically is to grow at semi-tropical southern pigskin and southern buffalo skin, tannin extract raw material is more than mandarin orange and Yang Mei two kinds. 制革原料皮主要是生长于亚热带的南方猪皮和南方水牛皮,栲胶原料为余柑和杨梅两种。
- Polyphenol compounds from heart wood of 15 years old E. leichow No. 1 contained mainly hydrolysable tannins (5. 98%)and partly condensed tannins (1. 91%). 15年生雷林一号桉木心材中的多酚类化合物以水解单宁为主（占原料的5．98%25），其次为缩合单宁（1．91%25）。稀碱预处理桉木，可除去大部分多酚类化合物。
- Keywords Juglans mandshuricaMaxim.;bark;hydrolysable tannin;NMR; 核桃楸;树皮;水解单宁;核磁共振;
- The modified larch bark tannin extracts can be used in production of bakelite bond. 可应用于酚醛树脂绝缘板的黏合剂生产。
- Meanwhile, the modification approaches of vegetable tannin extracts for the purpose of combination tanning are described. 同时，总结了有利于实施结合鞣的栲胶改性方法。
- The high sulfitated larch bark tannin extracts are more available to decrease the solution viscosity than the alkali treated extracts. 高度亚硫酸化的改性落叶松栲胶相比碱处理的改性落叶松栲胶更有效地降低其黏度和相对分子质量。
- The modified larch bark tannin extracts can be used in production of bakelite bo... 可应用于酚醛树脂绝缘板的黏合剂生产。
- The key technique of the new process of tannin extraction from black wattle bark is to divide the extraction into two steps. 采用分段浸取新工艺是黑荆树皮单宁提取的关键技术。
- This paper reviews the combination tannages on the basis of vegetable tannin extracts,includingtheirreactionmechanisms and technological processes. 本文对各种以栲胶为基础的结合鞣法进行了综述,阐述了结合鞣的反应机理、工艺过程。
