tannins are water-soluble polyphenolic secondary metabolites of higher plants with the molar mass from 300 to 3 000. hydrolysable and condensed tannins are the two major classes of tannins.
单宁为高等植物的次生代谢产物,是相对分子质量为300到3000的多酚类化合物,主要分为水解单宁和缩合单宁两大类。
the results were showed that the concentrations of condensed tannins were lower in nitrogen protection than those in air. and the differences were significant.
结果发现,在氮气保护下粉碎的样品,其测定结果较在空气中粉碎的样品小,并且这两种不同的粉碎方式对测定结果有显着的影响。
the impacts of different methods of comminution on the concentrations of condensed tannins in tamarix rasosissima branches is investigated.
就目前植物多酚测定过程中不同的粉碎方法对测定结果的影响进行了研究。
by the approach of adding tannins into extracts of chinese medicinal herbs, the adsorption selectivity of this adsorbent to condensed tannins was extensively investigated.
采用外加单宁的方法研究了这种吸附材料对中草药提取物中缩合类单宁的选择性吸附能力。
the appropriate extraction conditions of polyphenols and condensed tannins from branchlets of casuarina glauca were discussed in this paper.
采用外加单宁的方法研究了这种吸附材料对中草药提取物中缩合类单宁的选择性吸附能力。