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Preparation method of gardenia yellow pigment

A technology of gardenia yellow pigment and gardenia, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of low impurity content of geniposide, high production cost, poor product quality, etc., and reduce processing Process and concentration times, good product quality, and the effect of improving extraction rate and efficiency

Active Publication Date: 2014-04-23
YUNNAN RAINBOW BIO TECH
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of cumbersome procedures, high production cost and poor product quality in the existing production process of gardenia yellow pigment, and provide a kind of product capable of obtaining gardenia yellow pigment with low impurity content of geniposide and low content of gardenia yellow pigment. And new gardenia yellow pigment production method with simple process and low cost consumption

Method used

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  • Preparation method of gardenia yellow pigment
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preparation example Construction

[0012] The present invention provides a kind of preparation method of gardenia yellow pigment, wherein, the method comprises the following steps:

[0013] Step 1: Enzymolyze the gardenia raw material for 1-3 times with a compound enzyme preparation to obtain an extract;

[0014] Step 2: Adsorbing and refining the extract with a macroporous adsorption resin to obtain a refined solution, and concentrating the refined solution to obtain a concentrated paste;

[0015] Step 3: crystallize the concentrated paste with a crystallization solvent to obtain a gardenia yellow pigment product.

[0016] Wherein, the gardenia raw material is the raw material granules obtained by crushing the fruit of Gardenia jasminoides Ellis (Gardenia jasminoides Ellis), a Rubiaceae plant, and passing through a 10-mesh sieve.

[0017] In the method provided by the present invention, the compound enzyme preparation is selected from one or more of the group consisting of cellulase, hemicellulase, pectinase,...

Embodiment 1

[0053] According to the ratio listed in Table 2, add pure water and compound enzyme preparation to 1000g gardenia raw material to obtain the extraction system, adjust the pH value of the system to 4.6 with acetic acid-sodium acetate, and at the extraction temperature of 37 ° C, at 300 rpm Extract at a stirring speed of 1.3 h for 1.3 hours, filter the extract with a 400-mesh sieve and then extract twice under the same extraction conditions, combine the three extracts and filter with medium-speed filter paper to obtain a total extract of 8500g, and extract the extract at a medium-speed filter paper, filtrate collection; extract 2.43; use LSA-10 macroporous adsorption resin 500mL to refine the extract: adsorption: adsorption capacity 8.5BV, adsorption flow rate 1BV / h, direction up and down. Water washing: water consumption 10BV, flow rate 1BV / h, direction up and down. Desorption: 60 volume% ethanol desorption, the dosage is 1BV, the flow rate is 0.5BV / h, and the direction is up...

Embodiment 2

[0056] According to the ratio listed in Table 2, add pure water and compound enzyme preparation to 1000g gardenia raw material to obtain the extraction system, adjust the pH value of the system to 4.8 with acetic acid-sodium acetate, and at the extraction temperature of 35 ° C, at 300 rpm Extract at a stirring speed of 1.2 h for 1.2 hours, filter the extract with a 400-mesh sieve and then extract twice under the same extraction conditions, combine the three extractions with medium-speed filter paper and filter to obtain a total extract of 8535g, and pass the extract through medium-speed filter paper , the filtrate is collected; the extract 2.30; use LSA-20 macroporous adsorption resin 500mL to refine the extract: Adsorption: The adsorption capacity is 8.84BV, the adsorption flow rate is 1BV / h, and the direction is up and down. Water washing: water consumption 10BV, flow rate 1BV / h, direction up and down. Desorption: desorption with 60% ethanol by volume, the dosage is 1BV, t...

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Abstract

The invention discloses a preparation method of a gardenia yellow pigment. The method comprises the following steps: 1, carrying out enzymolysis on gardenia raw materials for 1-3 times by using a composite enzyme preparation, so that an extracting solution is obtained; 2, carrying out adsorption refining on the extracting solution by using macroporous adsorption resins so as to obtain a refining solution, and concentrating the refining solution so as to obtain a concentrated cream; 3, crystallizing the concentrated cream by using a crystallization solvent, so that a gardenia yellow pigment product is obtained. According to the method provided by the invention, the pigment loss caused by the manufacturing procedure and the number of times of concentrating is reduced, the quality of obtained products is good, the energy consumption is low, and the method is convenient for industrial production.

Description

technical field [0001] The invention relates to a preparation method of gardenia yellow pigment. Background technique [0002] Gardenia yellow contained in Rubiaceae (Gardenia jasminoides Ellis) is a natural water-soluble carotenoid, and its main components include crocin, crocetin and geniposide. [0003] In the prior art, the preparation of gardenia yellow pigment mainly adopts ethanol extraction, and after recovery of ethanol, the pigment is refined with macroporous adsorption resin, which needs to be followed by secondary concentration, membrane filtration, three concentration, spraying and drying steps to obtain powder Gardenia yellow pigment, the production procedure of existing gardenia yellow pigment preparation method is loaded down with trivial details, ethanol loss is big, production cost height, the gardenia yellow pigment obtained [0004] Therefore, it is necessary to provide a method for preparing gardenia yellow pigment with simple and convenient procedure...

Claims

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Application Information

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IPC IPC(8): C09B61/00
Inventor 蒋德生苏记王晓云蒯胜
Owner YUNNAN RAINBOW BIO TECH
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