类胡萝卜素

Carotenoids can make tomato to show color as yellow, orange and red.

番茄中类胡萝卜素是番茄果实呈现黄色、橙红色至红色的原因。

The young grape plants grown under low light environment was more sensitive to methylviologen as compared to unshaded control. After MV treatment, the PS Ⅱ photochemical efficiency of young grape plants shaded decreased more than that of control, its chlorophyll and carotenoids were bleached by strong light more seriously.

将其移到自然强光下后，PSⅡ光化学效率下降，受到明显的光抑制；对光氧化的敏感性提高，强光和光氧化剂处理后，其光合机构PSⅡ的光化学效率降低幅度大于对照，而且叶绿素和类胡萝卜素受光漂白严重。

ABSTRACT Fruit ripening is associated with a number of physiological and biochemical changes including degradation of chlorophyll, carotenoid biosynthesis, synthesis of flavor compounds, conversion of starch to sugars, cell wall solublisation and fruit softening.

果实的发育成熟涉及一系列复杂的生理生化变化，包括叶绿素的降解、类胡萝卜素的合成、淀粉向糖的转化、芳香性化合物的合成、细胞壁溶解和果实软化等。

The recent researches have found that the xanthophyll has some functions such as protecting eyesight,antioxidation and anticanceration.

叶黄素属类胡萝卜素，近年研究发现其具有保护视觉、抗氧化、抗癌等作用。

Kind carotene is the lubricious source that makes blade presents orange, cyanine element is the lubricious source that makes blade presents red, xanthophyll is the lubricious source that makes blade presents yellow.

类胡萝卜素是使叶片呈现橙色的色源，花青素是使叶片呈现红色的色源，叶黄素是使叶片呈现黄色的色源。

Results The UV-B treatment caused the declines of chlorophyll content, soluble protein content and water content of leaves, besides, dose-effect was existed. The decline of 30 μW/cm^2 treatment was bigger than that of 15 μW/cm^2 treatment. The influences of UV-B radiation on carotenoid content and anthocyanidin content were similar; the change trends were declined firstly then increased. The UV-B treatment with two doses restrained the electron transport of PSⅡ, particularly; the inhibitory effect was biggest after treated 2h, and then this effect was declined in 4, 6 and 8 h, so the dose-effect was existed. The UV-B radiation with two doses restricted photosynthetic rate and the inhibitory effect increased with the increase of treatment time. The high dose treatment caused huge damage to membrane system, while the result of low dose treatment was not obvious.

结果］UV-B处理导致叶绿素、可溶性蛋白含量以及含水量都降低，且存在剂量效应，30μW/平方公分处理的降幅大于15μW/平方公分；UV-B辐射处理对类胡萝卜素含量的影响与花青素相同，均表现为先下降后上升的趋势，2种剂量间差异不大；2种剂量的UV-B处理均抑制了PSⅡ的电子传递，尤其是处理2 h的抑制作用最大，4、6和8 h的抑制作用有所缓解，且存在剂量效应；2种剂量的UV-B辐射均抑制了叶片的光合速率，随着照射时间的延长抑制效应加大；高剂量UV-B处理对膜系统的损伤较大，低剂量UV-B处理结果不明显。

The contents of chl, chla and chlb of Celtis julianae 'Aurea' decreased at the same time and were lower than that of Celtis julianae . Although the carotenoid content was little lower, during degreening and regreening process, its content increased continuously.

金叶珊瑚朴的chl、chla和chlb的变化趋势一致，均显著低于珊瑚朴；类胡萝卜素的含量虽稍低于珊瑚朴，但在叶色变化中，持续升高，因此，金叶珊瑚朴属于总叶绿素缺陷型。

The experimentation indicated that chlorophyll and carotenoids had no remarkable relationship with the chlorophyllase and LOX during the growth of flue-cured tobacco leaf.

本试验表明，烤烟发育过程中叶绿素、类胡萝卜素与叶绿素酶、脂氧合酶间无显著相关关系。

Other carotenoids, no wonder researchers worldwide are now conducting in-depth studies on the benefits of crocetin.

它可能击穿入组织是不同的由其他类胡萝卜素到达的纤维，全世界研究员现在难怪举办关于crocetin的好处的深入的研究。

Astaxanthin(3,3′-dihydroxy-β,β-carotene-4,4′-dione),a type of red ketocarotenoid,is of great commercial interest because of its high price.

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。

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。