Efficient pigment extraction is a key factor influencing the economic feasibility of microalgal biorefineries. Ethanol, acetone, ethyl acetate, and hexane were evaluated for the batch extraction of chlorophyll a, chlorophyll b, and carotenoids from Chlorella sorokiniana and Heterochlorella luteoviridis. Solvent-to-biomass ratios did not affect extraction results in most cases. Ethanol showed the highest efficiency in the recovery of chlorophylls, presenting high extraction yields. Acetone was among the most efficient solvents to extract violaxanthin, lutein, zeaxanthin, and carotene from both microalgae, proving to be generally suitable to this application. Conductor-like screening model for real solvent segment activity (COSMO-SAC) corroborated experimental results, proving to be an important tool in the screening of solvents for extraction processes.

中文翻译：

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从微藻中提取叶绿素和类胡萝卜素：COSMO-SAC 辅助溶剂筛选

高效的色素提取是影响微藻生物精炼经济可行性的关键因素。乙醇、丙酮、乙酸乙酯和己烷用于从Chlorella sorokiniana和Heterochlorella luteoviridis 中分批提取叶绿素 a、叶绿素 b 和类胡萝卜素的评估. 在大多数情况下，溶剂与生物质的比率不会影响提取结果。乙醇在叶绿素的回收方面表现出最高的效率，呈现出高的提取率。丙酮是从这两种微藻中提取紫黄质、叶黄素、玉米黄质和胡萝卜素的最有效溶剂之一，证明通常适用于该应用。真实溶剂段活性的类导体筛选模型 (COSMO-SAC) 证实了实验结果，证明是筛选用于提取过程的溶剂的重要工具。