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Preparation of raspberry natural red coloring matter

A technology of natural red pigment and raspberry, which is applied in the field of preparation of natural red pigment of raspberry, can solve the problems of many impurities and the influence of pigment quality, and achieve the effect of high color price, good water solubility and strong adsorption effect

Inactive Publication Date: 2011-08-31
BEIJING POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the extraction of raspberry red pigment with extraction solvent, there are many impurities in it, which have a certain impact on the quality of the pigment. Therefore, it is necessary to provide a method for preparing natural raspberry red pigment that can overcome the defects in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: a kind of preparation method of raspberry natural red pigment, described method has the following steps:

[0024] A, the red raspberry juice that is selected, cleaned is squeezed to remove seeds, obtains red raspberry juice, then adds liquid pectinase 2-3mL in the described red raspberry juice with the ratio of adding liquid pectinase in every 1000g red raspberry fruit Add liquid pectinase, and perform enzymolysis at 45-55°C for 3-4 hours, then clarify the enzymolysis solution, separate the precipitate, and obtain the upper column liquid of red raspberry;

[0025] What this embodiment selects is LZ type screw juice extractor, just can separate raspberry seed from below while extracting juice; As long as it is to have the juice extractor that can simultaneously extract juice and deseed function all can adopt.

[0026] The liquid pectinase used in this example is the Pectinex BE Color liquid pectinase produced by Novozymes (China) Biotechnology Co., Ltd.; in...

Embodiment 2

[0067] Embodiment 2: On the basis of Embodiment 1, the clarification treatment described in Step A of this embodiment is to use a centrifuge to centrifuge the enzymatic hydrolyzate at 4000r / min for 5 minutes.

[0068] The preparation method of described raspberry solid-state natural red pigment, taking processing 1000g red raspberry as an example, its preparation steps are as follows:

[0069] Select and clean 1000g of red raspberry fruit, squeeze the juice and remove seeds with a juicer to obtain red raspberry juice, add 3mL of liquid pectinase, enzymolyze it in an incubator at 50°C for 3 hours, cool naturally, and use a centrifuge to Centrifuge the enzymatic solution at 4000r / min for 5 minutes to obtain 750g of the supernatant liquid of red raspberry.

[0070] Put pretreated (soaked in 95% ethanol, washed, and washed with distilled water) about 150 mL of AB-8 macroporous adsorption resin into a resin column with a diameter of 2.5 cm and a height of 35 cm, and washed the AB-8...

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Abstract

The invention relates to a method for processing natural haematochrome of a bramble. The invention has the preparation method that the bramble is taken as raw ingredient, and is sorted, cleaned, squeezed, seeded, treated by enzyme to obtain juice, adsorbed through macroporous adsorption resin, and desorbed through solvent, and then desorption solution is concentrated and dried to make solid natural haematochrome of the bramble. The natural haematochrome of the bramble made by adopting the preparation method has good water solubility, less impurities, high color value, bright color, good photostability as well as thermal stability, and the stability to sweetening agents, preservatives and a part of metal ions; when in juice-extracting, pectinase is used for enzymolysis, so that the juice yield of the bramble fruits is increased; the preparation method has low energy consumption, low cost and simple process, the product quality of the obtained natural pigment is enhanced obviously.

Description

technical field [0001] The invention relates to a preparation method of food coloring, in particular to a preparation method of solid raspberry natural red pigment by using raspberry as raw material. Background technique [0002] Raspberry is what we usually call tray, raspberry, and raspberry. It is called marlin fruit in the northeast region, and it is called raspberry in Chinese herbal medicine. Raspberry is a perennial deciduous shrub-type fruit tree of the Rosaceae Rubus genus. There are hundreds of them all over the world, and there are fifty or sixty edible varieties, mainly red raspberry and black raspberry. Raspberries are rich in nutrients. In addition to basic ingredients such as a large amount of sugar, they are also rich in health ingredients such as tannic acid, superoxide dismutase (SOD), flavonoids and vitamin E. [0003] Raspberry pigment is a kind of anthocyanin, which is a kind of flavonoid substance. In the natural state, anthocyanins often form glycosi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00A23L1/29A23L1/30A23L1/212A23L1/28A23L1/275A23L5/43A23L33/105
Inventor 辛秀兰王彦辉白立敏兰蓉李双石
Owner BEIJING POLYTECHNIC
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