酚类

In the brown vascular and green pericarp of blotchy ripening fruit, there are more phenols matter which is an important factor in causing browning.

番茄褐变维管束与绿果肉中有大量酚类物质的积累，酚类物质是产生褐变的一种重要因子。

Catechol is one of the substrate of plant material browning.

邻苯二酚类的酚类化合物是植物材料发生褐变的主要底物。

The method, which is capable of effecting very good separation of phenol and the 3 cresol isomers under the same chromatographic conditions, can be used to determine phenolic compounds in phenolic tar by external standard, and to analyze these compounds in the toxic leaching solution of the tar.

摘 要：建立了酚焦油中酚类物质质量分数测定和浸取毒性测定的气相色谱法，此法可以在同一色谱条件下对酚焦油中的苯酚及邻、间、对甲酚实现很好的分离，利用外标法分别进行定量分析，并对酚焦油浸取液中相应组份进行测量。

The pollution of natural water caused by hydroxybenzene compound are increasingly serious nowadays, that disserve entironment and health of human. How effectively disposed of the hydroxybenzene compound in water samples from environment is concern of everybody.

有机酚类化合物造成的水体的污染，直接危害着人类的健康和生态环境，如何有效地处理环境水样中有机酚类化合物，是当今人们普遍关注的一个问题。

The results showed that the phenolics in cranberry would reduced. The free quercetin showed the best stability. And the flavonoids and proanthocyanidins were the second. The total phenolics showed the worst stability.

结果显示，蔓越莓中的酚类化合物含量会随储存时间而下降，其中以游离态quercetin之安定性最佳，总类黄酮及前花青素则其次，在总酚类化合物之安定性最差。

By tracing the antifungal and antibacterial activities of the volatile oils, it is found that the major active site in fiuit oil of Litsea mollis is aldehydic fraction such as citral, the major active site in oil of Thymus quinquecostatus is phenolic fraction such as thymol and the major active site in ginger oil is high boiling-point terpenic constituents such as β-caryophyllene, eudesm-4 (14)-en-11-ol, et al.

通过抗菌活生追踪发现，毛叶木姜子果油的主要活性部位是醛类成分，如柠檬醛；地椒油的主要活性部位为酚类成分，如百里香酚；姜油的主要活性部位为&高沸点萜类组分&，如β-丁香烯、4（14）-桉叶油烯醇-11等。

Microcalorimetry was applied to follow the toxic effects caused by different diphenol compounds on microbial activity of Chinese fir soil.

用微量量热技术分析了三种二酚类化合物(邻苯二酚、间苯二酚、对苯二酚)对土壤微生物活性的毒性作用。

A migration detection method for 9 bisphenol type chemicals from food contacting materials was developed by using deionized water,3％ acetate acid solution,10 ethanol solution and refined olive oil as four food simulants. The chemicals included bisphenol A,bisphenol A diglycidyl ether,bisphenol F diglycidyl ether,and their derivatives.

选用去离子水、3%乙酸溶液、10%乙醇溶液和精制橄榄油作为4种食品模拟物，开展了食品接触材料中双酚A，双酚A二甘氨酸醚、双酚F二甘氨酸醚及其衍生物等9种双酚类物质迁移检测方法研究。

Experimental results showed that aerosol created by 1,3,5-trimethylbenzene photooxidation can be classify with five distinct chemical particle classes, the predominant components of these five particles are aromatic aldehyde, phenol, nitrophenol and carboxylic acid compounds.

利用该算法对OH自由基启动1，3，5-三甲苯光氧化形成的二次有机气溶胶单粒子质谱数据进行了聚类分析，在得到的五个聚类中包含了芳香醛、酚类化合物、硝基酚和羧酸等重要的光氧化产物，为研究苯系物光氧化机理提供了新的信息。

The objective of this work is to study the characterization of immobilized polyphenol oxidase from banana leaves and its application on the transformation of phenolic compounds. Polyphenol oxidases of banana leaves from a variety of sources were compared. Among them, PPO from Giant cavedishii leaves showed the highest specific activity (315 units/mg).

摘要 本研究目的在探讨固定化香蕉叶多酚氧化酶之特性及於酚类化合物转化之应用，首先探讨不同品种香蕉叶多酚氧化酶并比较不同之固定化方法，结果以北蕉的单酚酶比活性最高315，活性约为其他品种之2-20倍。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。