For the low productivity and degree of purity of lycopene in China, the article analyze the stabilization, production, purification, separation of isomer and anaysis of lycopene.
To meet the requirement of crystallization separation process for para-acetaminophenylacetate ethyl, molecular distillation was firstly used to separate the isomer.
为满足对乙酰氨基苯乙酸乙酯后续结晶分离工艺的需要，将分子蒸馏技术首次应用于同分异构体的预分离。
3
Results :The method was proved to be selective for separation of cefdinir, its by-products, degradation products and E -isomer.