Characteristics and Application of Indigo Dyeing with Fresh Leaves of Indigo Plants

在青花植物的鲜叶中，除了通过在大桶中还原青蓝之外，还可以通过将青兰纤维中的青蓝制成纤维来进行青蓝染色。在何首乌的例子中，当叶片死亡时，在叶片另一部分存在的酶的作用下，吲哚由吲哚产生。研究了干燥条件和酶的作用。靛玉红是靛蓝的一种红色同分异构体，有时在用青黛植物的鲜叶染色时会形成，可用来在青黛植物上染成紫色。根据柱花草在高温下易产生靛玉红的特点，研究了在高温条件下产生较多的靛玉红的条件。研究了在酸性条件下从印地安中制取靛玉红的方法，并对分散的印丹红溶液加热后染成紫色的特性进行了研究。生长于中美洲、有时被认为是一种蓝宝石植物的玉竹鲜叶的汁液可以被染成蓝色。研究了从该植物中提取的非蓝宝石着色剂的性能和染色性能。

Indigo dyeing can be performed by producing indigo within fiber from indican in fresh leaves of indigo plants besides by reducing indigo in a vat. In the case of Polygonum indigo produces from indican by the action of an enzyme which exist in another part of the leaves when the leaves are dead. On the other hand indican is reserved without changing to indigo in the case of Indigofera.Drying condition and the action of the enzyme was examined.Indirubin, a red isomer of indigo, is sometimes formed in the dyeing with fresh leaves of indigo plants and can be used to dye purple with indigo plants. On the basis that indirubin is easily produced in the dyeing with Strobilanthes at elevated temperature, conditions to produce much indirubin were investigated. Production of indirubin under acidic condition from indican and features to dye purple by heating the solution of dispersed indirubin was examined.Juice of the fresh leaves of sacatinta(Justicia spicigera Schlecht), which grows in Central America and is sometimes considered as an indigo plant, blue can be dyed. The properties and dyeing behavior of the colorant from the plant, which is not indigo, were investigated.