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Method for extracting betalain from phytolaccic berry

A beet red pigment and berry technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of difficult to achieve large-scale production, many operation steps, high energy consumption, etc. Simple process and low energy consumption

Inactive Publication Date: 2013-12-11
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And when using pokeweed berries as raw material to use organic solvent extraction in combination with macroporous resin adsorption method to prepare beet red pigment (Ji Qiaoling, "The method for preparing beet red pigment and co-producing pokeweed saponin with pokeweed berries as raw material", invented Patent application number: 200410097291.7, publication number: CN1778842A), there are many operation steps, and a large amount of volatile and irritating organic solvents are used, the energy consumption is large when the eluent is concentrated, and it is difficult to realize large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Harvest the mature purple-black berries of pokeweed, simply spray and clean them, remove the stems, crush and remove the seeds, then use pure water as the solvent to continuously extract in countercurrent at room temperature. Semi-airtight storage, fully airtight storage after 10 days. The storage liquid is filtered with diatomaceous earth (inlet pressure 0.1MPa, outlet pressure 0.4MPa), the filtrate is microfiltered with hollow fiber (inlet pressure 0.1MPa, outlet pressure 0.05MPa), and the filtrate is then subjected to ultrafiltration (inlet pressure 0.1MPa, outlet pressure 0.05MPa), the ultrafiltrate is concentrated by reverse osmosis (inlet pressure 0.5MPa, outlet pressure 0.4MPa), the concentrated solution is further concentrated with a vacuum centrifugal evaporator, and when the solid content reaches 30%, centrifugal spray drying (50°C) obtains color price beet red pigment powder.

Embodiment 2

[0022] Harvest the mature purple-black berries of pokeweed, simply spray and clean them, remove the stems, crush and remove the seeds, then use pure water as the solvent to continuously extract in countercurrent at room temperature. Semi-airtight storage, fully airtight storage after 20 days. The storage solution is filtered with diatomite (inlet pressure 0.2MPa, outlet pressure 0.45MPa), the filtrate is microfiltered with hollow fiber (inlet pressure 0.2MPa, outlet pressure 0.1MPa), and the filtrate is then ultrafiltered (inlet pressure 0.3MPa, outlet pressure 0.15MPa), the ultrafiltrate is concentrated by reverse osmosis (inlet pressure 1.0MPa, outlet pressure 0.85MPa), and the concentrated solution is further concentrated with a vacuum centrifugal evaporator, and when the solid content reaches 35%, centrifugal spray drying (60°C) obtains color price beet red pigment powder.

Embodiment 3

[0024] Harvest the mature purple-black berries of pokeweed, simply spray and clean them, remove the stems, crush and remove the seeds, then use purified water as the solvent to continuously extract in countercurrent at room temperature. Semi-airtight storage, fully airtight storage after 30 days. The storage liquid is filtered with diatomite (inlet pressure 0.3MPa, outlet pressure 0.5MPa), the filtrate is microfiltered with hollow fiber (inlet pressure 0.3MPa, outlet pressure 0.15MPa), and the filtrate is then ultrafiltered (inlet pressure 0.5MPa, outlet pressure 0.25MPa), the ultrafiltrate is concentrated by reverse osmosis (inlet pressure 2.0MPa, outlet pressure 1.8MPa), and the concentrated solution is further concentrated with a vacuum centrifugal evaporator, and when the solid content reaches 40%, centrifugal spray drying (70°C) obtains color price beet red pigment powder.

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Abstract

The invention belongs to a method for preparing betalain from mature dark purple phytolaccic berry, comprising the following steps of: taking the mature dark purple phytolaccic berry as a raw material, and carrying out continuous countercurrent extraction at room temperature, coarse filtration, semi-sealed and full-sealed storing, micro-filtration, ultrafiltration, reverse osmosis, centrifugal thickening and spray drying to obtain the betalain product containing lower than 0.5% of colour value phytolaccic total saponin. No organic chemical agent is used and no toxic substance is generated during preparation process of the product; the process of the micro-filtration, ultrafiltration and reverse osmosis at the room temperature saves energy obviously and reduces decomposition and loss of the betalain; yield of the product is higher than 8%; the betalain product of the phytolaccic berry prepared by the invention can be applicable to the fields of food, cosmetic and medicine.

Description

Technical field: [0001] The invention relates to a technical method for separating and extracting beet red pigment from mature purple-black berries of pokeweed, especially a method for cleanly producing natural pigment with low energy consumption, and belongs to the field of colorant biotechnology. technical background: [0002] Beet red pigment is easily soluble in water, purple-red, and has strong coloring power. It is a safe natural pigment product widely used in food, cosmetics, medicine and other fields. [0003] At present, the process for preparing beet red pigment with red beet as the main raw material (He Chongyan et al., "Preparation of beet red pigment", invention patent application number: 97100782.9, publication number: CN 1191877A), has raw material storage occupation during production. Large space, blanching inactivated enzymes, cooling and flash evaporation require large energy consumption and other shortcomings. The yield of purple-black mature berries of P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/54
Inventor 毛得奖朱亚玲班青
Owner QILU UNIV OF TECH
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