胡萝卜素类

There are 65 species of Chinese herbs with confirmed anti-HBV activityd, in which 16 probable active constituents are pointed out. They are arene, ketone derivatives, alicyclic carboxylic acid, aromatic carboxylic acid, ester, lactone, cyanide derivatives, heterocycle derivatives, carotenoids, anthraquinones, flavonoids, vegetable tannin, alkaloid, terpenoids, steroids and protein. Among them, the complexes of flavonoids, terpenoids, steroids and alkaloids are more abundant.

确定了具有抗乙肝病毒活性的中草药品种65种，其中含可能活性成分共16种，即芳烃、酮类衍生物、脂环族羧酸、芳香族羧酸、酯、内酯、氰类衍生物、杂环衍生物、类胡萝卜素、蒽醌类、黄酮类、植物鞣质、生物碱、萜类、甾类和蛋白质，而16种中以黄酮类、萜类、甾类和生物碱类成分为多。

Carotene is one of the important caronenoids.

胡萝卜素是类胡萝卜素的一种。

Another major class of nutritional characteristics of the natural pigment is carotenoid.

另一大类具有营养特性的天然色素是类胡萝卜素。

So it is significant that to study the variety of carotenoid in different PSB and the method to extract them.

因此研究不同光合细菌中的类胡萝卜素组成，以及利用光合细菌来生产各种类胡萝卜素，具有深远的意义。

UV-B-induced damage in such leaves could be reduced with 0.5 mmol.L-1 NaHSO3 treatment; brown spots on the leaf surface were reduced in number, the degree of leaf wilt was reduced, degradation of chlorophyll and carotinoid was reduced and flavonoid level was increased. With the NaHSO3 treatment, the content of H2O2 in leaves of Phaseolus vulgaris under enhanc ed UV-B radiation was significantly lower than in controls, and the activities of antioxidant enzymes were higher with treatment than in controls.

结果表明：与未处理对照相比较，用0.5 mmol.L-1 NaHSO3处理的离体红芸豆叶片表面褐色斑减少、边缘蜷曲及萎蔫程度降低；且能延缓叶片中叶绿素和类胡萝卜素含量的降低；使类黄酮含量升高；叶片中过氧化物酶和抗坏血酸过氧化物酶活性升高，过氧化氢(H2O2)含量降低。

Chlorophyll a, c2 and c1 and the carotenoids fucoxanthin, diadinoxanthin, diatoxanthin and β,β-carotene were existed in all species. No new marker pigment was found in these species.

叶绿素中的叶绿素a、叶绿素c2、叶绿素c1和类胡萝卜素中的岩藻黄素、硅甲藻黄素、硅藻黄素和β，β-胡萝卜素存在于所有的种类中。

When the strain grew in the medium containing glucose(40 g/L) as carbon source with tomato juice(3.6 mL/L), gingili oil(1.6 mL/L), Na2CO3(6 g/L)and phosphate buffer, at 28 ℃ with illumination for 120 h, its cell biomass, and carotenoid yield and content could reach 65.57 mg wet cell per mL medium, 9.896 μg per mL medium and 150.9 μg per gram wet cell, respectively.

菌株在以葡萄糖为碳源，添加番茄汁（3.6 mL /L）、芝麻油（1.6 mL/L）、Na2CO3（6 g/L）和磷酸缓冲盐的液体培养基中28 ℃振荡培养5 d，每mL培养液细胞生物量湿重达到65.57 mg，类胡萝卜素产量达到9.896 μg，菌体每g湿重细胞胡萝卜素含量为150.9 μg。

Four kinds of main carotenoids from Ipomoea batatas were determined by external standards.

以外标定量法对红心薯中的4种主要类胡萝卜素(β-胡萝卜素，叶黄质，堇黄质，新黄质)进行了定量，结果较为满意。

The selective absorption of carotenoids and the specific interaction between carotenoids during their absorption which people focus attention upon are discussed.

细胞对β-胡萝卜素的摄入和分泌表现出浓度依赖性、时间依赖性和饱和性；对不同类胡萝卜素的吸收表现出选择性；类胡萝卜素在吸收过程中表现出相互影响。

Lycopene is an open-chain unsaturated carotenoids. It is a kind of mesne product of synthesis carotenoids. It has several physiological functions, such as antioxidation, elimination of free radicals, promoting junction and communication among cells.

番茄红素是开链式的不饱和类胡萝卜素，是胡萝卜素合成过程的中间产物，具有抗氧化、清除自由基、促进细胞间的连接与传导等多种生理功能。

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。