【摘要】 虾壳中虾青素的高效安全提取技术是促进虾类加工副产物变废为宝的途径之一。利用乳酸-氯化胆碱构成的低共熔溶剂提取虾壳中的虾青素，在单因素实验基础上，采用响应面实验优化提取工艺；通过低共熔溶剂的物化性质分析探究其对虾青素的提取机理。优化后的工艺条件为乳酸-氯化胆碱摩尔比为2.5∶1，含水量（w）为9.5%，超声时间为30.5 min，实际得率为24.41μg·g^-1。傅里叶变换红外光谱分析表明低共熔溶剂合成时官能团并未发生改变，二者融合产生的氢键可能是促进虾青素高效提取的主要原因，黏度会在一定程度上影响产品的提取过程。更多还原

【Abstract】 Development of efficient and safe extraction technology of astaxanthin from shrimp shells is crucial for transforming waste into valuable resources. In this study, astaxanthin in shrimp shells was extracted with deep eutectic solvent composed of lactic acid-choline chloride. A single-factor test was carried out to explore the influence of extraction conditions on the extraction rate, and a response surface test was adopted to optimize the extraction process. The mechanism of astaxanthin extraction with deep eutectic solvent was explored by physical and chemical analysis. The optimized process conditions were: molar ratio of 2.5∶1, water content of 9.5%, ultrasonic time of 30.5 min, and actual yield of 24.41 μg·g^-1. The Fourier transform infrared spectroscopy shows that there was no change in functional groups during deep eutectic solvent synthesis, but hydrogen bond might be the reason for effective extraction of astaxanthin, and viscosity would affect the extraction process of product.更多还原