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Pigments from Eustigmatophyceae: an interesting class of microalgae for carotenoid production
Journal of Applied Phycology ( IF 3.3 ) Pub Date : 2021-01-08 , DOI: 10.1007/s10811-020-02312-z
Raquel Amaral , J. Sérgio Seixas de Melo , Lília Maria Antunes dos Santos

Pigments are a fundamental part of the microalgal cell, with chlorophylls at the center of photosynthesis and carotenoids as accessory pigments. The characteristic pigment profile of the Eustigmatophyceae was one of the evidences which contributed to the segregation of this class of organisms from the Xanthophyceae. Recent findings indicate that eustigmatophyte carotenoids are interesting compounds with laboratory-scale proven health-promoting effects but only a few studies dedicate to the characterization of the pigment profile of the class. In the present work, extracts of 27 eustigmatophyte strains held at the Coimbra Collection of Algae (ACOI) were prepared and analyzed by HPLC-DAD. Results showed a typical eustigmatophyte pigment profile present in all strains, namely, chlorophyll a, violaxanthin, vaucheriaxanthin diester, β,β-carotene, and other minor carotenoids. Violaxanthin was the most abundant carotenoid, achieving nearly half the total pigment content in Monodopsis unipapilla ACOI 2938, and also in two studied Vischeria strains, representing ca. 70% of carotenoids in both strains. The second major carotenoid was β,β-carotene, with the highest production of this commercially important carotenoid detected in Pseudostaurastrum sp. ACOI 3413 (24% of total pigments. Characiopsis cf. saccata ACOI 481 and Characiopsis minuta ACOI 2423 had the highest amount of vaucheriaxanthin diester (19% of total pigments). To our best knowledge, this represents the first report where the pigment profile of eustigmatophytes with stipitate Characiopsis-like morphology is characterized. The results reveal the high potential use of eustigmatophytes as sources of naturally derived carotenoids.



中文翻译:

洋桔梗色素:一类有趣的类胡萝卜素生产微藻

色素是微藻细胞的基本组成部分,叶绿素位于光合作用的中心,类胡萝卜素作为辅助色素。桔梗科植物的特征性色素分布是促使此类生物从黄藻科植物分离的证据之一。最近的发现表明,洋桔梗类胡萝卜素是有趣的化合物,具有实验室规模的健康促进作用,但只有少数研究致力于表征该类色素。在本工作中,制备了保留在科英布拉藻类收藏中心(ACOI)的27种桔梗植物菌株的提取物,并通过HPLC-DAD分析。结果表明,所有菌株,即叶绿素a中均存在典型的桔梗植物色素谱。,紫黄质,vaucheriaxanthin二酯,β,β-胡萝卜素和其他次要类胡萝卜素。紫黄质是最丰富的类胡萝卜素,在Monodopsis unipapilla ACOI 2938中以及在两个研究过的Vischeria菌株中约占总色素含量的一半。两种菌株中70%的类胡萝卜素。第二种主要的类胡萝卜素是β,β-胡萝卜素,在假单胞菌属(Pseudostaurastrum sp。)中检出的商业上重要的类胡萝卜素产量最高。ACOI 3413(占总颜料的24%。Characiopsis cf. saccata ACOI 481和Characiopsis minutaACOI 2423的vaucheriaxanthin二酯含量最高(占总颜料的19%)。据我们所知,这是第一个报告,其中描述了具有Characiopsis样形态的桔梗植物的色素分布。结果表明,洋桔梗作为天然来源的类胡萝卜素的来源具有很高的潜力。

更新日期:2021-01-08
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