Method for converting and extracting crocetin by using deep eutectic solvent

• Main Authors: CAO XUELI, SHEN ZETAO, WEN LIJIAO
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention discloses a method for converting and extracting crocetin by using a deep eutectic solvent. The raw materials are mixed with a deep eutectic solvent, and crocetin is obtained through one-step conversion extraction. The deep eutectic solvent is composed of an ammonium chloride hydrogen bond acceptor and an organic acid hydrogen bond donor. The deep eutectic solvent adopted by the invention can integrate conversion and extraction, and crocin in gardenia or saffron crocus is completely converted into crocetin and extracted at the same time. And adding water to separate out crocetin, and recovering the deep eutectic solvent at the same time. The method disclosed by the invention is simple in steps, high in extraction efficiency, short in time, low in cost, green and environment-friendly. 本发明公开了一种利用深共熔溶剂转化提取藏红花酸的方法。将原料与深共熔溶剂混合，一步转化提取，得到藏红花酸。所述深共熔溶剂由氯化铵类氢键受体和有机酸类氢键供体构成。本发明所采用的深共溶溶剂能集转化和提取为一体，将栀子或藏红花中的藏红花素完全转化为藏红花酸的同时提取出来。加水析出藏红花酸，同时回收深共熔溶剂。本发明所述的方法步骤简单，提取效率高，时间短，成本低，绿色环保。