虾青素

单独添加维生素B1、B（12）和H能够促进雨生红球藻虾青素含量增加。

Astaxanthin content of H. pluvialis was accelerated significantly by adding of Vitamin-B _1 , Vitamin-B _ ( 12 ) and Vitamin-H.

虾青素可提高UVA辐射后细胞的存活率和T-AOC，降低SOD和CAT活力。

Astaxanthin increased survival rate and T-AOC and decreased the activity of antioxidases .

目标产物经HPLC定性分析，确定为反式虾青素。因此，以辛伐他汀等HMG-CoA还原酶抑制剂作为选择压力，对虾青素高产突变株的筛选上具有较好的筛分能力。

The objective product identified by qualitative HPLC analysis was trans-astaxanthin .

结果虾青素能有效地抑制亚油酸的自氧化性，抑制能力明显高于维生素E；

Results : Astaxanthin could inhibit autooxidation of linoleic acid effectively and its inhibition and elimination rate to hydroxy radical was higher than vitamin E.

虾青素（astaxanthin），是一种生理功能极强的脂溶性天然类胡萝卜素。

Astaxanthin is a natural lipid soluble carotenoid of powerful physiological functions .

投喂混合各浓度组和单独投喂虾青素浓度组对肝胰腺和鳃MDA酶活性均表现出了显著的抑制作用，并且随着时间的推移则表现出逐渐降低的趋势。

MDA activity in hepatopancreas and gill was significantly inhibited by the feeding of astaxanthin in each group , which showed a decreasing trend over time .

虾青素对ECV-304细胞的抗氧化作用及其作用机制

Antioxidative action of astaxanthin in ECV-304 cells and its mechanism

结果表明，UV-B辐射对极地雪藻具有一定的致死效应，UV-B辐射后雪藻细胞的叶绿素和类胡萝卜素含量增加，虾青素含量也显著提高。

The results show that UV-B radiation is lethal for Chlamydomonas nivalis , and that the contents of chlorophyll , carotenoid and astaxanthin increase after the radiation .

结果显示，虾青素可显著提高实验组对虾的SGR和存活率。

The results showed that astaxanthin could significantly increase the survival rate and SGR of experimental group ( P0.05 ) .

八氢番茄红素合成酶（PSY）是虾青素合成途径中第一个限速酶。

Phytoene synthase is considered to be the first rate limiting enzyme in carotenoid biosynthesis pathway in H. pluvialis .

用单因子试验对破壁方法及浸提溶剂进行选择，结果表明二甲亚砜（DMSO）法是法夫酵母破壁提取虾青素的最佳方法，丙酮是理想的提取溶剂。

Results showed that dimethylsulphoxide ( DMSO ) method was the best to disrupt cell walls and acetone was suitable solvent for extracting astaxanthin from this yeast .

为提高游离虾青素含量，研究了从粗提品中提纯虾青素的工艺，确定了以Na2CO3水溶液洗涤除杂质的方法。

In order to increase the content of free astaxanthin , a technology was designed to purify astaxanthin from the coarse product of astaxanthin .

β-胡萝卜素酮化酶（BKT）是雨生红球藻虾青素合成途径中的关键酶。

β - carotene ketolase ( BKT ) is the key enzyme for the biosynthesis of astaxanthin .

相比之下，在对照（CK）中，NR和Rubisco活性仍然很高，仅下降了26.1%和25.6%，细胞内没有虾青素积累。

By contrast , in ( control )( CK ) NR and Rubisco activities remained high till the end of the experiment , exhibiting decreases of only 26.1 % and 25.6 % , and no astaxanthin was accumulated .

结果表明，破碎的下脚料在空气中保藏12d后虾青素残留仅37.5%，在阳光下照射3d虾青素残留18.2%，在真空、冷冻、避光的保藏条件下虾青素损失较少；

The results showed that astaxanthin of the comminuted offal retained only 37.5 % after storage for 12 days in air , and 18.2 % in sunlight for 3 days , astaxanthin was stable in vacuum and frozen condition without light .

当虾青素提取与皂化同时进行时，NaOH、Na2CO3、NaHCO3对虾壳色素有破坏作用，且碱性越强破坏性越大。

The results showed that when saponification and extraction process together , NaOH or Na_2CO_3 or NaHCO_3 all could destroyed the pigmentation of shrimp waste , and the higher alkalinity it had , the stronger its destructiveness was .

接种4d时，运动细胞占细胞总数的90%，细胞内的虾青素含量（330pg/cell）占最终色素累积量的（600pg/cell）的55%。

After four days of inoculation , the number of vegetative cells was 90 % of total number of cells and the astaxanthin content ( 33.0 pg / cell ) was 55 % of the final astaxanthin content ( 60.0 pg / cell ) which was inoculated ten days .

角黄素、玉米黄索和玉米黄素双棕榈酸酯对MDA-MB-435S细胞的凋亡发生无诱导作用；β-胡萝卜素、虾青素和番茄红素对MCF-7细胞的凋亡发生有诱导作用；

The apoptosis positive cells could be observed in the breast cancer cell lines MDA-MB-435s treated by B - carotene , astaxanthin and lycopene , but there were not apoptosis positive cells in the breast cancer cell lines MDA-MB-435s treated by canthaxanthin zeaxanthin and zeaxanthin dipalmitate ;

几种化学激活剂刺激虾青素合成的机理研究

Research on Mechanism of Promotion of Astaxanthin Synthesis by Chemical Activators

为了生存，藻细胞开始合成虾青素。

For survival , the algal cell begins to synthesize astaxanthin .

虾青素对大鼠乙酸性胃溃疡的治疗作用

Therapeutic effect of astaxanthin on acetic acid-induced gastric ulcer in rats

同时排除了异烟肼的结构类似物筛选作用，验证了胞外诱导剂臭氧对法夫酵母产虾青素的胁迫作用。

Isoniazid was ruled out the role of the structure analogs .

负压空化法高效提取虾青素的研究

Study on the Effective Extraction of Astaxanthin by the Vacuum Cavitations

虾青素的合成与细胞的生长相关。

The production of astaxanthin was associated with the yeast growing .

虾青素生物学来源和功能的研究进展

Advancement of Research on Biological Sources and Physiological Functions of Astaxanthin

虾青素是一种具有极强抗氧化活性的类胡萝卜素，具有广泛的应用价值。

Astaxanthin with high antioxidant activity is of great application value .

虾青素的生物功效及其应用

Discussion on the Biological Efficacy and the Application of Astaxanthin

结论虾青素具有明显的抗氧化活性。

Conclusion : Astaxanthin has obvious anti - oxidation activity .

天然虾青素的超级抗氧化活性及其应用

Super - antioxidant activity of natural astaxanthin and its application

乙醇的添加增加了虾青素产量，但抑制了细胞生长。

The addition of ethanol promoted astaxanthin production while inhibiting cell growth .