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Preparation method of gardenia green pigment

A gardenia green and pigment technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of difficult control, large differences between product batches, etc., and achieves low cost, good stability, and technology. Simple and easy to control effects

Inactive Publication Date: 2012-12-05
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the research on gardenia series pigments mainly focuses on gardenia yellow pigment, gardenia blue pigment and gardenia red pigment, and gardenia green pigment is generally prepared by blending yellow pigment and blue pigment. The color range of the pigment is wide, and the difference between product batches is large, which is difficult to control

Method used

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  • Preparation method of gardenia green pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 1kg of dried gardenia fruit, crush it, put it into a container, add 5kg of water, and add 50g of cellulase, control the temperature at 45°C, the pH of the system is 5, extract for 4 hours, and stir at a speed of 50r / min; after the extraction, Remove the residue by centrifugation, and collect the extract; add 0.3kg of sodium glutamate to the extract, react at 50°C for 48 hours, and stir at a speed of 80r / min; after the reaction, filter the reaction solution to remove insoluble impurities. The gardenia green pigment solution is obtained; the gardenia green pigment solution is dehydrated and dried, and the obtained dry powder is the prepared gardenia green pigment.

Embodiment 2

[0030] Take 1 kg of dried gardenia fruit, crush it, put it into a container, add 8 kg of water, and add 20 g of β-glucosidase, control the temperature at 50 ° C, the pH of the system is 6, extract for 3 hours, and the stirring speed is 100 r / min; the extraction is completed Afterwards, the residue was removed by filtration, and the extract was collected; 0.5kg of phenylalanine was added to the extract, and reacted at 55°C for 36h, with a stirring speed of 120r / min; after the reaction, the reaction solution was filtered to remove the insoluble impurities to obtain a gardenia green pigment solution; the gardenia green pigment solution is dehydrated and dried, and the obtained dry powder is the prepared gardenia green pigment.

Embodiment 3

[0032] Take 1t of dried gardenia fruit, crush it, put it into a container, add 5t of water, and add 10kg of pectinase. , after filtering, the extract was collected, and the filter residue was added to 3t water for the second extraction, the extraction conditions were the same as the first time, after the end, filtered, and the extract was combined; 0.2t glutamic acid was added to the extract, and the React at 50°C for 60 hours, with a stirring speed of 120r / min; after the reaction, filter the reaction solution to remove insoluble impurities to obtain a gardenia green pigment solution; dehydrate and dry the gardenia green pigment solution to obtain a dry powder That is the prepared gardenia green pigment.

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Abstract

The invention provides a preparation method of gardenia green pigment, which specifically comprises the following steps that: dry gardenia fruits are used as raw materials, and water extraction, enzymolysis and separation are conducted to obtain extract; the extract reacts with primary amino compound to obtain gardenia green pigment solution; and then, the gardenia green pigment solution is filtered to remove insoluble impurities and is dried to obtain water soluble gardenia green pigment powder. The invention has the advantages that the process is simple, the cost is low and the reaction conditions are mild; and the safety of the obtained gardenia green pigment is high, the tinting strength is high, the light stability, heat stability, the acid stability, the alkaline stability and the metal ion stability of the gardenia green pigment are good, the application scope of the gardenia green pigment can be widened, the gardenia resources can be effectively utilized, the gardenia product added value is improved and the mass industrialized production can be realized.

Description

technical field [0001] The invention relates to a preparation method of gardenia green pigment, in particular to a method for preparing gardenia green pigment by simultaneously carrying out water extraction and enzymatic hydrolysis using dried gardenia fruit as a raw material. Background technique [0002] With the development of the food industry and the improvement of people's living standards, food coloring has been paid more and more attention as an important part of food additives. Gardenia ( Gardenia Jasminoides Eills) is widely distributed in southern my country. It is an ornamental and medicinal plant that can be cultivated artificially and has abundant resources. Gardenia green pigment is a deep-processing product of Gardenia jasminoides, which has high safety, strong coloring power, good stability, and has good development and application prospects. [0003] The invention patent of the People's Republic of China ZL200710008780.4 discloses a method for separating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00
Inventor 甘纯玑周庆新谢苗
Owner FUJIAN AGRI & FORESTRY UNIV