Supporting information for the article “Spectral properties of marennine-like pigments reveal minor differences between blue Haslea species and strains”

Marennine is a bluish pigment excreted in the seawater by the microalga Haslea Ostrearia. It has interested researchers of different backgrounds such as marine biologists, phytochemists and biochemists because it fixes on the oysters gills and make them green, a phenomenon observed since centuries in the Atlantic French coast near Marenne-Oléron, where the tradition of cultivating oysters is old. Its biological activities have been and are currently studied and many applications are interesting because of its antioxidant, antiangiogenetic and antibacterial activities but also for being a blue natural pigment. During recent sampling campaigns all over the word, new blue diatoms have been discovered and ongoing investigation of genome and frustules appearance are carried out to classify them. A preliminary characterization of the marennine-like pigments that they produce has been carried out, and selected data concerning UV-visible spectrometry, Infrared spectrometry, cyclic voltammetry, elemental composition by Energy-dispersive X-ray spectroscopy (EDX), and proton nuclear magnetic resonance are presented and discussed in the research paper related to this supporting information. Therefore, the data presented in this data paper complete the full paper.马雷宁素（Marennine）是由微藻奥氏海束毛藻（Haslea Ostrearia）分泌至海水中的蓝色色素。该物质可附着于牡蛎鳃部并使其呈现绿色，因此受到海洋生物学家、植物化学家与生物化学家等多领域研究者的关注——这一现象在法国大西洋沿岸马雷讷-奥莱龙（Marenne-Oléron）附近海域已被观测数百年，该区域的牡蛎养殖传统源远流长。其生物学活性已被长期研究且目前仍在被深入探索；由于兼具抗氧化、抗血管生成与抗菌活性，同时作为稀缺的天然蓝色色素，其应用前景备受学界关注。在近期全球范围内的采样调查中，研究人员发现了多种全新的蓝色硅藻，目前正通过基因组测序与硅质壳（frustules）形态观测开展分类研究。针对这些新硅藻所产生的类马雷宁素色素，研究人员已完成初步表征；本支撑信息所关联的研究论文中，已呈现并讨论了部分核心测试数据，包括紫外-可见光谱法（UV-visible spectrometry）、红外光谱法（Infrared spectrometry）、循环伏安法（cyclic voltammetry）、能量色散X射线能谱（Energy-dispersive X-ray spectroscopy, EDX）元素组成分析以及质子核磁共振（proton nuclear magnetic resonance）的相关结果。因此，本数据集论文所收录的数据可完整补充该研究论文的实验内容，完善其论证体系。