含丹宁酸的

Not only can it prevent halitosis, but a pomegranate can refrigerate nonnasalities, tannins have the constringent capability of shrinking blood vessels and muscle cells.thus, it can solidify teeth with the result of a great smile!

石榴不仅能去除口臭，使口腔清爽，同时，它所含的丹宁酸，具有收缩血管或肌肉的收敛作用，因此，能够巩固牙龈。去除口臭，牙龈巩固，就能安心地露齿一笑了。

The sixth part: The spectrophotometric performance of the new type aresenoxylphenylazo rhodanine and carboxylphenylazo rhodanine ramifications was mainly studied.

第六部分：主要研究了几种新型含胂酸基、羧基若丹宁衍生物的分光光度性能。

The fourth part: The influence of various active groups on the fluorescence performance of aresenoxylphenylazo rhodanine ramifications was studied systematically to seek the fluorescence reagents of good analysis performance.

第四部分：系统研究了各种活性基团对含胂酸基偶氮若丹宁衍生物荧光性能的影响，以寻求具有优良分析性能的荧光试剂。

The influences of groups -CH〓 and -Cl on the fluorescence analysis performance of aresenoxylphenylazo rhodanine class were mainly studied.

主要系统研究了-CH〓、-Cl基团对含胂酸基苯偶氮若丹宁衍生物荧光分析性能的影响。

According to this, a series of new methods to determine trace cobalt, copper, antimony, cadmium, aluminum and iron was established by taking advantage of the characteristic of metal ions with intense catalysis effect on hydrogen peroxide oxygenating rhodanine.

基于此，利用痕量金属离子对过氧化氢氧化若丹宁具有强烈催化作用的性质，建立了一系列利用新型含羧酸基偶氮若丹宁衍生物催化荧光法测定痕量钴、铜、锑、镉、铝和铁的新方法。

The bark of Terminalia arjuna is used for manufactuning the dye and dry bark from the stem contains 15-24% tannin and used in tanneries.

该植物可用来生产染料，含15%-24%的丹宁酸，也可在制革行业中使用。

It is the tannic acid contained in oak that ages the brandy.

正是栎木里含的丹宁酸使白兰地变芳醇了。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。