Method for preparing cape jasmine yellow pigment using cape jasmine as raw material

Abstract

The invention discloses a method for preparing gardenia yellow pigment by using gardenia as a raw material. The method comprises the following steps: according to strong and weak capabilities of HPD-100 type macroporous resin in absorbing different components in extract of the gardenia, sampling at a special speed, washing by alcohol solution with different concentrations at different eluting speed, and collecting washing liquor by stages; eluting by deionized water and 25 percent alcohol in sequence, and collecting eluant; and using an absorbance A238 smaller than 0.8 as an eluting end point; then using 70 percent alcohol to elute the gardenia yellow pigment, collecting the gardenia yellow pigment by OD lower than 0.8; and finally spraying and drying the gardenia yellow pigment solution to prepare the finished product of the gardenia yellow pigment. The gardenia dregs after extraction can be used as feed additive or fertilizer. The technique referred in the whole method does not produce solid dregs and technical waste water, is an environment-friendly technique and suitable for enterprise production, and has good product quality and high economic value.

Description

technical field [0001] The invention relates to a method for extracting active ingredients from Chinese medicinal materials, in particular to a method for extracting gardenia yellow, a natural pigment with high color value and low OD value. Background technique [0002] The planting of natural pigment raw materials and the preparation and use of natural pigments have a long history in China. According to the records of "Historical Records Huozhi Biography", in the Eastern Zhou Dynasty before 221 BC, there was a saying that "Qianzhi Qianmu. It is also better than the house of Qiancheng", which shows that the scale of planting madder and gardenia at that time was large. One of the uses of madder and gardenia at that time was to prepare dyeing agents. At the end of the Northern Song Dynasty, "Qi Min Yao Shu" written by Jia Sixie also specifically mentioned the fact that ancient Chinese people extracted dyes from plants and used them as dyeing agents. [0003] However, since t...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent [application number CN95112567.2] discloses a production method of gardenia yellow pigment, but the quality standard of gardenia yellow pigment is not published in the disclosed technical scheme, and the original medicinal material resources of gardenia fruit cannot be fully utilized, and the process The process is cumbersome and affects the cost of industrial production

[0006] Chinese patent [Application No. CN200310111038.8] discloses a preparation method of gardenia extract, but it uses geniposide as the main product, does not involve the preparation process of gardenia yellow pigment, and does not make full use of gardenia medicinal resources

[0007] Chinese patent [application number CN200510017378.3] discloses a method for the comprehensive utilization of gardenia, which involves the separation of gardenia yellow pigment and geniposide and the extraction of various components in gardenia, making full use of gardenia resources , but its unrefined gardenia yellow and geniposide

At the same time, most of the gardenia yellow pigments on the market are graded according to the color value E (1%, 1cm, 440nm). Shi Natural Products Co., Ltd.: 500 color price, 400 color price, 300 color price, 60 color price; Shaanxi Longfu Biochemical Co., Ltd.: color price is 50~300; Zhuhai Jinghao Trading Co., Ltd.: color price is 60~550 ;Qingdao Luyuan Bioengineering Co., Ltd.: the color value is 100~500; Tianjin Tiankangyuan Biotechnology Co., Ltd.: the color value is 10~500, etc., and the color value E (1%, 1cm, 440nm) can only reflect gardenia yellow pigment The content of geniposide does not reflect the content of geniposide in the product, and such products without controlling the content of geniposide, if the content of geniposide is too high, the product will turn green and shorten the shelf life of the product