蜕皮激素是控制昆虫蜕皮、变态的一类强有力的生理活性物质。五十年代从昆虫及甲壳纲动物提取,产量很低。六十年代中期在植物中发现,其含量比昆虫和甲壳动物高出千百倍,为广泛提取和应用开辟了广阔前景。近十年来,已找到数百种含有蜕皮激素的植物,并查明β-蜕皮激素在植物界广泛存在。下面就提取分离方法做一介绍。 蚕用蜕皮激素现有精制品和粗制品两种规格,精制品是蜕皮激素的纯品,粗制品是蜕皮激素的浓缩物,木文着重介绍粗制品。生产粗制品有两种方法:1.酒精提取法,用酒精提取的总提取物,再用水处理除去大部分杂质而成,简称醇提水沉法。2.水煮法,用水煎煮 Ecdysone is a powerful class of physiologically active substances that controls insect molting and metamorphosis. Fifties from insects and crustaceans, the yield is very low. The mid-1960s found in plants, its content than insects and crustaceans a thousand times higher, for a wide range of extraction and application of open up broad prospects. Hundreds of plants that contain ecdysone have been found in the past decade and β-ecdysone has been found to be widespread in the plant kingdom. The following extraction method to do an introduction. Silkworm ecdysone available two kinds of refined products and crude specifications, refined products are pure ecdysone, crude products are ecdysone concentrates, highlighting the crude article of wood. Production of crude products in two ways: 1. Alcohol extraction method, the total extract extracted with alcohol, and then remove most of the impurities from the water made, referred to as the alcohol precipitation method. 2. boiled law, boiling water