Dendrobium pigment extracting method

Abstract

The invention discloses a dendrobium pigment extracting method and relates to the technical field of deep processing to traditional Chinese herb of herba dendrobii. The extracting method comprises the steps: firstly breaking the herba dendrobii, then adding 95% ethyl alcohol and utilizing a pulp machine to pulp; filtering slurry and keeping filtrate; adding 95% ethyl alcohol into filter residue, heating, refluxing and extracting, filtering again after being cooled, obtaining filter residue for standby application and combining filtrate in twice filtering to obtain filtrate; centrifuging the filtrate through a centrifugal machine and then standing to obtain supernate and precipitate; adding vitamin C into the supernate, heating and concentrating to fluid extract in vacuum negative pressure, spraying and drying the fluid extract, finally smashing, grinding and sieving to obtain dry pigment powder, adding lactitol into the dry pigment powder and evenly stirring and mixing to obtain the dendrobium pigment. The extracting method disclosed by the invention utilizes the 95% ethyl alcohol to replace water, so that effective components can be fully released, and extracting efficiency can be higher; furthermore, yield of extracted products is remarkably improved; compared with traditional pigment extraction, the yield is improved by 30% or more.

Description

technical field [0001] The invention relates to a method for extracting dendrobium pigment, and relates to the technical field of deep processing of traditional Chinese medicine dendrobium. Background technique [0002] Dendrobium nobile Lindl (scientific name: Dendrobium nobile Lindl), also known as Dendrobium orchid rhyme, Immortal Grass, Resurrection Grass, Ziying Xianzhu, Chlorophytum, Linlan, Forbidden Life, Nobile Flower, etc. The stem is erect, fleshy and thick, slightly flattened cylindrical, 10-60 cm long and 1.3 cm thick. Medicinal plant, sweet and slightly salty in nature and flavor, cold, and returns to the stomach, kidney, and lung meridian. Tonify stomach and promote body fluid, nourish yin and clear away heat. It is used for yin deficiency and body fluid deficiency, dry mouth, polydipsia, retching due to lack of food, asthenia heat after illness, and blurred vision. Dendrobium is elegant, exquisite and lovely, with bright colors and fragrant smell. It is kn...

AI Technical Summary

Problems solved by technology

But, for the extraction of the dendrobium pigment, there are few reports in the prior art, and a small amount of documents disclose the extraction method of the dendrobium pigment, but there are more or less defects, for example, in the pigment extraction process, the yield is relatively low. low, the loss of medicinal value is relatively serious, the prepared pigment components are relatively single, and the shelf life is short