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Tradescantia pallida purplish red pigment powder as well as preparation method and application thereof

A fuchsia and purple bamboo plum technology, applied in the fields of food additives, cosmetics, printing and dyeing, can solve the problems of low purity, complex equipment, difficult to popularize, etc., and achieve the effect of simple extraction and purification process, simple preparation method, and high utilization rate of raw materials

Pending Publication Date: 2022-02-11
TIANJIN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, there are the following disadvantages: ①The tinting power is worse than synthetic pigments; ②The cost is high; ③The stability is poor; ④It is difficult to mix any color; ⑤It is easy to deteriorate during processing and distribution.
However, its pigment extraction and purification process is complex and its purity is low, and the invention patent - a preparation method of purple bamboo plum plant dye and its dyeing application requires the use of jet mill, ultra-high pressure extraction, flash concentration, and complicated equipment. Harsh conditions, difficult to popularize

Method used

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  • Tradescantia pallida purplish red pigment powder as well as preparation method and application thereof
  • Tradescantia pallida purplish red pigment powder as well as preparation method and application thereof
  • Tradescantia pallida purplish red pigment powder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of preparation method of Zizhumei fuchsia pigment powder comprises the following steps:

[0049] Step 1: Cleaning and freeze-drying of the leaves of Zizhumei: Wash 3kg of mature purple leaves of Zizhumei, dry them, cut them into pieces, freeze them in liquid nitrogen at -196°C for 80 seconds, remove them, and freeze them in a vacuum freeze dryer 6h, the dry and anhydrous leaves of Zizhumei were obtained, and then placed in an ultrasonic cell pulverizer for 30min to pulverize to obtain a purple powder;

[0050] Step 2: Response surface analysis determines the extraction conditions: the optimal extraction conditions are: the extraction solvent is an acidic ethanol solution with a pH of 4 and a volume fraction of 20% (0.3% acetic acid), the extraction temperature is 50 ° C, and the time is 40 min. The liquid ratio is 1:40g / mL;

[0051] Step 3: Ultrasonic-assisted method for extracting purple bamboo plum pigment: based on the optimal extraction conditions in step 2,...

Embodiment 2

[0062] A kind of preparation method of Zizhumei fuchsia pigment powder comprises the following steps:

[0063] Step 1: Cleaning and freeze-drying of purple bamboo leaves: Wash 4kg of mature purple leaves of purple bamboo plum, dry them, cut them into pieces, freeze them in liquid nitrogen at -196°C for 100 seconds, remove them, and freeze them in a vacuum freeze dryer After 7 hours, dry and anhydrous leaves of Zizhumei were obtained, which were then pulverized in an ultrasonic cell pulverizer for 40 minutes to obtain a purple powder;

[0064] Step 2: Response surface analysis determines the extraction conditions: the best extraction conditions are: the extraction solvent is an acidic ethanol solution with a pH of 4 and a volume fraction of 20% (0.3% acetic acid), the extraction temperature is 50°C, and the time is 40min. The ratio is 1:40g / mL;

[0065] Step 3: Ultrasonic-assisted method for extracting purple bamboo plum pigment: based on the optimal extraction conditions in s...

Embodiment 3

[0076] A kind of preparation method of Zizhumei fuchsia pigment powder comprises the following steps:

[0077] Step 1: Cleaning and freeze-drying of purple bamboo leaves: Wash 5kg of mature purple leaves of purple bamboo plum, dry them, cut them into pieces, freeze them in liquid nitrogen at -196°C for 120 seconds, remove them, and freeze them in a vacuum freeze dryer 8h, to obtain dry and anhydrous leaves of Zizhumei, and then place them in an ultrasonic cell pulverizer for 50min to pulverize to obtain a purple powder;

[0078]Step 2: Response surface analysis determines the extraction conditions: the best extraction conditions are: the extraction solvent is an acidic ethanol solution with a pH of 4 and a volume fraction of 20% (0.3% acetic acid), the extraction temperature is 50°C, and the time is 40min. The ratio is 1:40g / mL;

[0079] Step 3: Ultrasonic-assisted method for extracting purple bamboo plum pigment: based on the optimal extraction conditions in step 2, the purp...

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Abstract

The invention belongs to the fields of printing and dyeing, food additives and cosmetics, and particularly relates to Tradescantia pallida purplish red pigment powder and a preparation method and application thereof. The preparation method comprises the following seven steps: cleaning and freeze-drying Tradescantia pallida leaves, determining extraction conditions by a response surface analysis method, extracting Tradescantia pallida pigment by an ultrasonic-assisted method, carrying out suction filtration and vacuum concentration on a pigment mixed solution, conducting purifying by macroporous resin, refining a Tradescantia pallida pigment eluent, and conducting freeze-drying to obtain a Tradescantia pallida pigment powder. The method is easy to operate, low in equipment requirement, universal and capable of being produced on a large scale, the product has a certain antibacterial property, the dyeing effect on wool is best, the color is darker, and the brightness is more saturated. The pigment can be applied to the fields of food, cosmetics, textile dyeing and the like.

Description

technical field [0001] The invention belongs to the fields of printing and dyeing, food additives and cosmetics, and in particular relates to purple bamboo and plum purple pigment powder, a preparation method and application thereof. Background technique [0002] Natural food pigments are natural pigments such as microbial pigments, vegetable pigments, and mineral pigments extracted from animals, plant tissues, and minerals. They are widely used in medicines and foods. Shellac pigments, safflower yellow pigments, and beet pigments are allowed to be used Red, capsanthin, red yeast rice, turmeric, β-carotene, sodium copper chlorophyllin, caramel, etc. Natural food coloring has the following advantages: ①It is non-toxic to the human body, and the safety of natural coloring is high; ②It has biological activity (such as β-carotene, VB2), so it also has the effect of nutritional enhancement; ③It can better imitate the color of natural products , the tone is more natural when colo...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54D06P1/34D06P3/14D06P3/04D06P3/60A23L5/43A61K8/9794
CPCC09B61/00C09B67/0096D06P1/34D06P3/14D06P3/04D06P3/60A23L5/43A61K8/9794A23V2002/00A61K2800/43A23V2200/04A23V2250/21
Inventor 张青松吕岳芹白洁马洪彬田晓康付征巩继贤郭文娟陈莉
Owner TIANJIN POLYTECHNIC UNIV
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