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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Induction of canthaxanthin production in a Dactylococcus microalga isolated from the Algerian Sahara
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Induction of canthaxanthin production in a Dactylococcus microalga isolated from the Algerian Sahara

机译：从阿尔及利亚撒哈拉沙漠中分离出的微球藻微球藻中的角黄素生成诱导

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摘要

Secondary carotenoids are high-valued anti-oxidants which can be produced by some algae when exposed to an environmental stress (e.g. nutrient deprivation, high light intensities). To this end, we characterized the stress-induced carotenoid production of a new microalgal strain, Dactylococcus dissociatus MT1, which was isolated from the Sahara Desert of Algeria. Nitrate starvation, oxidative stress and varying light intensities were applied to determine the effect of illumination on carotenogenesis. Canthaxanthin was the main secondary carotenoid and light intensity had an important influence on the rate of its accumulation. The addition of NaCl also enhanced canthaxanthin production while nitrate depletion had more of an effect on lipid production. However, these two stresses in combination synergistically increased the production of both. Our results represent a step toward the development of strains suitable for secondary carotenoid production at the industrial scale.
机译：次级类胡萝卜素是高价值的抗氧化剂，当暴露于环境压力（例如营养缺乏，高光照强度）时，某些藻类会产生。为此，我们表征了一种应力诱导的类胡萝卜素产生的一种新的微藻菌株，Dactylococcus dissociatus MT1，该菌株是从阿尔及利亚撒哈拉沙漠中分离出来的。应用硝酸盐饥饿，氧化应激和变化的光强度来确定照明对类胡萝卜素形成的影响。角黄素是次要类胡萝卜素的主要成分，光强度对其积累速率有重要影响。 NaCl的添加还增强了角黄素的产生，而硝酸盐的消耗对脂质产生的影响更大。然而，这两种压力组合在一起协同增加了两者的产量。我们的结果代表了在工业规模上开发适用于二次类胡萝卜素生产的菌株的一步。

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