查询词典 pheophytin

Nine kinds of pigments were identified in Ulothrix sp.. They are carotinoid, pheophytin, chlorophyll a, b, chlorophyllin chlorophyllide a,neoxanthin, chlorophyll c and pheophytin c.

丝藻的色素种类有 9种，分别为胡萝卜素、脱镁叶绿素 a、叶绿素 a、叶绿素 b、叶绿酸、脱酯基叶绿酸、新黄素、叶绿素 c和脱镁叶绿素 c。

Tracing the hydrolysate of spinach endogenous chlorophyllase by HPLC, it was found that the effect of rare earth on the chlorophyllase activity or the hydrolysis activity of chlorophyllase on La-pheophytin was not remarkable; but La-pheophytin could accelerate the oxidation degradation of chlorophyll in spinach.

此外，用HPLC跟踪菠菜中叶绿素酶水解活性的结果显示：稀土离子对叶绿素酶的水解活性的影响并不显著；同样叶绿素酶对镧叶绿素的酶水解活性也不明显，然而，镧叶绿素可以催化叶绿素氧化降解。

The results showed that the contents of chlorophyll a and chlorophyll b decreased,and contents of pheophytin a and pheophytin b increased, but chlorophyllide a and chlorophyllide b changed slightly.

结果表明，随着加工过程的推进，叶绿素a、叶绿素b呈下降趋势，脱镁叶绿素a、脱镁叶绿素b呈上升趋势，叶绿素酸酯a、叶绿素酸酯b变化较小。

It was firstly found that the Pb-pheophytin complex could be easily formed only with the reaction of Pb〓 with pheophytin in ethanol medium.

首次发现用高氯酸铅与脱镁叶绿素在乙醇溶液中形成铅叶绿素配合物。

Compared with the related pheophytin, the maximum absorption bands of RE-pheophytin red shifted in Soret band and blue shifted in Q band.

结果显示：在酸性条件下所制备的稀土叶绿素实际上是叶绿素卟啉环被修饰的稀土叶绿素衍生物。

Compared with pheophytin a and pheophytin b, the Soret bands of Cd-pheophytin a and Cd-pheophytin b red shifted by 19nm and 11nm, respectively.

6制备、分离和纯化得到镉叶绿素a和b的配合物，比较了它们与相应天然叶绿素的光谱性质。

The multivariate linear regression analysis on specific absorption coefficients for pheophytin and chlorophyll a indicates that the specific absorption coefficients for pheophytin was much larger than chlorophyll a at 412 nm; slightly larger than pheophytin at 440nm; and about 3 times larger than pheophytin at 670 nm and 675 nm.

结果表明，412nm波段脱镁叶绿素的比吸收系数远大于叶绿素a；440nm波段，叶绿素a的比吸收系数略大于脱镁叶绿素；670、675nm波段，叶绿素a的比吸收系数约为脱镁叶绿素的3倍。

Accordingly, the Q bands of them blue shifted by 6mn and 13nm, respectively. The fluorescence emission wavelengths of Cd-pheophytin a and Cd-pheophytin b observed at 660nm and 649nm, respectively, which were shorter than those of corresponding pheophytin a and pheophytin b by 10nm and 9nm, respectively.

研究发现：在光吸收性质上，与脱镁叶绿素a和b相比，镉叶绿素a和b在Soret带的吸收峰位置分别红移了19nm和11nm，而在Q带则分别蓝移了6nm和13nm；在荧光性质上，镉叶绿素a和b的荧光发射波长比脱镁叶绿素a和b分别蓝移了10nm和9nm。

Successful separation of Cd-pheophytin a, Cd-pheophytin b, chlorophyll a, chlorophyll b, pheophytin a and pheophytin b in 14min was firstly accomplished by reversed-phase HPLC at a flow rate of 0.8ml/min, with the mobile phase of methanol: acetone (80: 20, v/v).

首次以甲醇：丙酮＝80：20为流动相，流速为0.8ml/min，在C〓柱（5μm，4.0×250mm）上，14min内成功实现了镉叶绿素a和镉叶绿素b配合物与叶绿素a，b和脱镁叶绿素a，b的高效液相色谱分离。

The absorption bands observed for Pb-pheophytin a at 462nm and 673nm , while for Pb-pheophytin b at 480nm and 662nm . Compared with pheophytin a and pheophytin b, all these bands red shifted more or less. Among the reported metallochlorophylls, the degree of red shift of Pb-pheophytin in Soret band was the largest by 54nm and 44nm for Pb-pheophytin a and Pb-pheophytin b, respectively.

实验表明：对铅叶绿素a和b系列来说，它们在Soret带、Q带的特征吸收峰分别在462nm，673nm和480nm，662nm；与脱镁叶绿素a，b相比，铅叶绿素a，b在Soret带和Q带吸收峰均有不同程度的红移；与现已报道的金属叶绿素相比，铅叶绿素a，b在Soret带的红移程度最大，分别为54和44nm；铅叶绿素不具有荧光活性，并能猝灭脱镁叶绿素的荧光。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。