CN105623304A - Method for purifying gardenia blue - Google Patents
Method for purifying gardenia blue Download PDFInfo
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- CN105623304A CN105623304A CN201410602953.5A CN201410602953A CN105623304A CN 105623304 A CN105623304 A CN 105623304A CN 201410602953 A CN201410602953 A CN 201410602953A CN 105623304 A CN105623304 A CN 105623304A
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- gardenia blue
- blue pigment
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Abstract
The invention relates to a method for refining gardenia blue and belongs to the field of purifying processing of food additives, particularly natural pigments. The method for purifying the gardenia blue comprises the following steps of preparing a gardenia blue solution with proper concentration from a commercially-available gardenia blue crude product, filtrating the gardenia blue solution by filter cloth, then, enabling the filtrate to pass through an ultrafiltration membrane, concentrating the filtrate, and carrying out spray drying, thereby preparing powder, i.e., high-purity gardenia blue. According to the method for purifying the gardenia blue, disclosed by the invention, the highest color number of pure powder of the prepared gardenia blue can reach 150 or more, and heat resistance, light resistance, acid stability and the like of the product are improved. The method for purifying the gardenia blue, disclosed by the invention, has the characteristics of being simple in process, high in operability, pure in color tone and high in stability, being applicable to industrial production, and the like.
Description
Technical field
The present invention relates to a kind of method refining for gardenia blue pigment, belong to food additive especially natural pigment purification manufacture field.
Background technology
Fructus Gardeniae sky blue pigment, is a kind of with the fruit of Maguireothamnus speciosus Cape jasmine for raw material, utilizes the natural colorant that modern biotechnology is extracted. In food processing direct painted seldom, it is mainly used in and the natural flavochrome such as compatibility such as Gardenia Yellow, Carthamus yellow, mix the marennin of different color and luster, compared with the chlorophyll extracted, the marennin tone allocated with gardenia blue pigment can control, acid resistance is good, can be used in the food of slant acidity, beverage. Additionally gardenia blue pigment also with various natural red pigment compatibilities, can mix the purple of different tone. Therefore gardenia blue pigment has broader range of application in food processing.
Being rarely in natural cyanine nature, gardenia blue pigment is one therein, with the edible light blue of synthetic dyestuff, indigo compared with, source is natural, human compatibility good for it, and safety height, is a kind of natural pigment being worth promoting.
At present, the domestic existing research and development being engaged in Fructus Gardeniae cyanine, and possess the ability of batch production gardenia blue pigment. But owing to the product produced is compared with same kind of products at abroad, it is that purity, tone, product stability etc. all exist obvious gap, so that production marketing is subject to very big impact.
Therefore, a kind of technique of research is simple, workable, it is adaptable to industrialized production and the gardenia blue pigment purification process that tone is pure, stability is high are very necessary.
Summary of the invention
It is desirable to provide a kind of technique is simple, workable, it is adaptable to industrialized production and the gardenia blue pigment purification process that tone is pure, stability is high.
Method for gardenia blue pigment purification of the present invention, comprises the following steps:
Taking commercially available or self-control gardenia blue pigment semifinished product, be configured to the gardenia blue pigment solution of suitable concn, after filter-cloth filtering, by ultrafilter membrane, take filtrate concentration, spray drying is made powder and is namely obtained high-purity gardenia blue pigment.
Preferably, gardenia blue pigment solution of the present invention adopts the gardenia blue pigment solution that deionized water or the alcoholic solution dissolved dilution lower than 20% become concentration to be 60-80U/mL.
It is furthermore preferred that ultrafilter membrane of the present invention is molecular weight ultrafilter membrane between 10000-15000, the material acid and alkali-resistance of film, compression resistance, the pattern of film is flat or tubular type.
It is further preferred that ultra-filtration conditions of the present invention is solution PH is neutral, temperature is 40-45 DEG C, and pressure is 2-3.5kg/cm2��
Method for gardenia blue pigment purification of the present invention, prepared gardenia blue pigment, the most High color values of pure powder is up to more than 150, and heat-resisting, fast light, the absolute acid stability etc. of product have also been obtained raising. Described in purport of the present invention for the method for gardenia blue pigment purification, there is technique simple, workable, it is adaptable to industrialized production and tone is pure, stability high.
Detailed description of the invention
Embodiment one:
Taking commercially available gardenia blue pigment semifinished product (color valency is generally between 18-25) 100g, be configured to, with deionized water, the gardenia blue pigment solution that concentration is 60-80U/mL, then with after filter-cloth filtering, then be 45 DEG C in temperature, pressure is 3.5kg/cm2Under by molecular weight ultrafilter membrane between 10000-15000, take filtrate concentration, spray drying is made powder and is namely obtained high-purity gardenia blue pigment 43g.
Embodiment two: contrast test
By the gardenia blue pigment after purification of the present invention and crude product gardenia blue pigment powder, detecting color valency, then distinguish furnishing liquid test solution, then carry out tone, acid resistance, thermostability, light resistance comparative experiments respectively, result is as follows:
Table-1 color valency, tone, acid resistance compare
Table-2 heat-resistant experiment comparison sheet (100 DEG C of boiling water heating)
Table-3 is fast light experiment comparison sheet (direct sunlight)
As can be seen from the above table, the method for gardenia blue pigment purification of the present invention, prepared gardenia blue pigment, the most High color values of pure powder is up to more than 150, and heat-resisting, fast light, the absolute acid stability etc. of product have also been obtained raising.
Claims (4)
1., for the method for gardenia blue pigment purification, comprise the following steps:
Taking commercially available or self-control gardenia blue pigment semifinished product, be configured to the gardenia blue pigment solution of suitable concn, after filter-cloth filtering, by ultrafilter membrane, take filtrate concentration, spray drying is made powder and is namely obtained high-purity gardenia blue pigment.
2. the method for gardenia blue pigment purification as claimed in claim 1, it is characterised in that described gardenia blue pigment solution adopts the gardenia blue pigment solution that deionized water or the alcoholic solution dissolved dilution lower than 20% become concentration to be 60-80U/mL.
3. the method for gardenia blue pigment purification as claimed in claim 1, it is characterised in that described ultrafilter membrane is molecular weight ultrafilter membrane between 10000-15000, and the material acid and alkali-resistance of film, compression resistance, the pattern of film is flat or tubular type.
4. the method for gardenia blue pigment purification as described in claim 1 or 3, it is characterised in that described ultra-filtration conditions is solution PH is neutral, and temperature is 40-45 DEG C, and pressure is 2-3.5kg/cm2��
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410602953.5A CN105623304A (en) | 2014-10-31 | 2014-10-31 | Method for purifying gardenia blue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410602953.5A CN105623304A (en) | 2014-10-31 | 2014-10-31 | Method for purifying gardenia blue |
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| Publication Number | Publication Date |
|---|---|
| CN105623304A true CN105623304A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410602953.5A Pending CN105623304A (en) | 2014-10-31 | 2014-10-31 | Method for purifying gardenia blue |
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| CN (1) | CN105623304A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604696A (en) * | 2017-08-09 | 2018-01-19 | 天津工业大学 | A kind of gardenia blue pigment colouring method of wool fabric |
| US11174390B2 (en) * | 2015-09-29 | 2021-11-16 | Riken Vitamin Co., Ltd. | Gardenia pigment preparation |
-
2014
- 2014-10-31 CN CN201410602953.5A patent/CN105623304A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11174390B2 (en) * | 2015-09-29 | 2021-11-16 | Riken Vitamin Co., Ltd. | Gardenia pigment preparation |
| CN107604696A (en) * | 2017-08-09 | 2018-01-19 | 天津工业大学 | A kind of gardenia blue pigment colouring method of wool fabric |
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Application publication date: 20160601 |
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| WD01 | Invention patent application deemed withdrawn after publication |