脱镁叶绿素

Attacked by surface active agent, ocean micro-alga will be change their coloring matter for photosynthesis under the contamination of surface active agent, to result much phaeophytin-a.In addition, have assayed the surface property of the four kinds of surface-active agent.

在此基础上初步研究了表面活性剂对海洋微藻的毒性机理，找到了表面活性剂对海洋微藻细胞的攻击点是藻类的细胞膜，并且胁迫状态下的藻类细胞的光合色素组成发生变化，产生大量的脱镁叶绿素a，影响藻类的光合作用效率。

ABSTRACT Partially purified chlorophyll was used to prepare pheophorbide by chlorophyllase hydrolysis and selective acidic hydrolysis methods.

以初步纯化的叶绿素为原料，利用叶绿素酶水解、选择性酸降解两种方法制备脱镁叶绿酸。

In order to explain the toxic mechanism, it studied the toxicity effect of each chemical for Chl-a and protein and finds that chlorobenzene has the most toxicity to Chl-a and protein, bringing much phaeophytin and effecting photosynthesis efficiency.

探讨了六种化学品对小球藻的致毒机理，发现氯苯对小球藻的叶绿素a含量及蛋白质含量的影响最严重，并且在化学品的胁迫作用下产生大量的脱镁叶绿素a，影响藻类的光合作用效率。

The paper also finds that oils badly effects chlorophyll and protein of Chlorella spp., and the rate of phaeophytin is enhanced in studying toxicity mechanism.

毒性机理研究发现，石油对小球藻的叶绿素和蛋白质含量都有影响，曝油后，脱镁叶绿素所占比例明显增加。

The survey data obtained in the Dalian Bay, June 2007 were studied for the relationship between pheophytin and phytoplankton absorption.

根据2007年6月期间对大连湾的调查数据，分析了脱镁叶绿素对浮游植物吸收特性的影响。

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。

Fitting analysis with a power function for the pigment concentration and absorption coefficient showed that the absorption coefficients at 412 nm and 440 nm exhibited higher correlation with pheophytin concentration than chlorophyll a, but contrary at 675 nm.

色素浓度与吸收系数进行乘幂函数拟合分析表明，412、440nm波段吸收系数与脱镁叶绿素浓度拟合相关性高于叶绿素a，而675nm波段相反。

The cotyledon and seed coat were cooked at 120℃ 10~50 min and compare their content of pH and chlorophyll. The result showed pH value of seed coat（6.25~5,46）was lower then cotyledon（6.35~6.06）. The increase of acidity and heat treatment caused content of chlorophyll in the seed coat to decrease（6.57~1.28 mg/100 g）and form pheophytin.

绿豆子叶、种皮於120 ℃烹煮10~50 min时，发现种皮pH值（6.25~5.46）较子叶（6.35~6.06）为低，於酸性环境与热造成种皮中叶绿素含量降低（6.57~1.28 mg/100g），并形成褐黄色的脱镁叶绿素，此现象与种皮b值增加（21.55~34.85）具关联性。

METHODS:Based on the extraction rate of chlorophyll,acetone method was compared with alcohol method and the preparing factors of acetone method was optimized by orthogonal design.

以叶绿素提取率为指标，对脱镁叶绿酸制备的乙醇法和丙酮法工艺进行比较，用正交试验法对丙酮法的工艺条件进行优化。

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。