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Aqueous two-phase extraction method of pigments in cinnamomum camphora fruits

A two-phase, camphor technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problem of low pigment extraction rate, achieve the effect of mild water environment, mild operating conditions, and reduce extraction steps

Inactive Publication Date: 2020-10-30
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the value of camphor fruit remains to be further developed, and the extraction rate of pigment in camphor fruit is still low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for extracting pigments in camphor fruit with two aqueous phases, comprising the steps of:

[0024] (1) Collect the camphor fruit, remove the core after cleaning the camphor fruit, dry in a dryer at 60°C, then pulverize, pass through a 24-mesh sieve, seal it in a sealed bag and put it into a desiccator for subsequent use;

[0025] (2) Dissolve 2.0g of ammonium sulfate in 4mL of water, add 6mL of acetone, and form a two-phase extractant by phase separation; adjust the temperature of the two-phase extractant to 45°C and pH 7, add 0.5g of pulverized Cinnamomum camphora fruit, (material-to-liquid ratio is 1g:20mL), after stirring and extracting for 80min, centrifugal 5min, after standing for 5min, phase separation, the upper phase is the organic phase containing pigment, and the lower phase is the inorganic salt water containing impurities such as sugars phase; the upper phase obtained by rotary evaporation to remove acetone, and the remaining part was dried in a v...

Embodiment 2

[0028] A method for extracting pigments in camphor fruit with two aqueous phases, comprising the steps of:

[0029] Step (1) is with embodiment 1;

[0030] (2) Dissolve 2.0 g of ammonium sulfate in 4 mL of water, add 6 mL of acetone, and form a two-phase extractant by phase separation; adjust the temperature of the two-phase extractant to 25° C. and a pH of 6, add 0.5 g of pulverized Cinnamomum camphora fruit, (material-to-liquid ratio is 1g:20mL), after stirring and extracting for 80min, centrifugal 5min, after standing for 5min, phase separation, the upper phase is the organic phase containing pigment, and the lower phase is the inorganic salt water containing impurities such as sugars phase; the upper phase obtained by rotary evaporation to remove acetone, and the remaining part was dried in a vacuum oven to completely remove acetone and prevent the deterioration of the pigment, weighed, and calculate the extraction rate of the pigment.

[0031] In this embodiment, 0.04 g ...

Embodiment 3

[0033] A method for extracting pigments in camphor fruit with two aqueous phases, comprising the steps of:

[0034] Step (1) is with embodiment 1;

[0035] (2) Dissolve 2.0g of ammonium sulfate in 4mL of water, add 6mL of acetone, and form a two-phase extractant by phase separation; adjust the temperature of the two-phase extractant to 60°C and pH 7, add 0.5g of pulverized Cinnamomum camphora fruit, (material-to-liquid ratio is 1g:20mL), after stirring and extracting for 96min, centrifuge for 5min, leave standstill for 5min and then separate phases, the upper phase is the organic phase containing pigment, and the lower phase is the inorganic salt water containing impurities such as sugars phase; the upper phase obtained by rotary evaporation to remove acetone, and the remaining part was dried in a vacuum oven to completely remove acetone and prevent the deterioration of the pigment, weighed, and calculate the extraction rate of the pigment.

[0036] In this embodiment, 0.1 g ...

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Abstract

The invention relates to an aqueous two-phase extraction method of pigments in cinnamomum camphora fruits, which comprises the following steps: (1) collecting cinnamomum camphora fruits, and pretreating to obtain crushed cinnamomum camphora fruits for later use; (2) dissolving an inorganic salt in water, adding an organic phase, performing phase splitting to form an aqueous two-phase extracting agent; adjusting the temperature of the aqueous two-phase extracting agent to be 25-80 DEG C and the pH value to be 3-9; adding crushed cinnamomum camphora fruits until the solid-to-liquid ratio of thecrushed cinnamomum camphora fruits to the aqueous two-phase extracting agent is 1g: (10-50) mL, stirring and extracting for 20-120 minutes, centrifuging, standing and carrying out phase separation toobtain an upper phase of acetone and pigment and a lower phase of salt and part of impurities; and collecting the upper phase, carrying out rotary evaporation, drying the upper phase under a vacuum condition to obtain pigments, weighing, and calculating the extraction rate of the pigments. The method disclosed by the invention has a relatively high extraction rate of the pigments in the cinnamomumcamphora fruits, and the highest pigment extraction rate can reach about 20wt%.

Description

technical field [0001] The invention relates to the technical field of plant pigment extraction, in particular to a method for extracting pigment from camphor fruit in two aqueous phases. Background technique [0002] Pigments are widely used in people's lives. At present, most of the pigments used in the cosmetics industry and food industry are synthetic pigments. Although they have the advantages of bright color and not easy to fade, most of them are toxic and will endanger people's health, so they are gradually being used. Natural colorings are substituted. [0003] Cinnamomum camphora has a wide branch in my country, and the fruit of Cinnamomum camphora is large and easy to get. The cost of raw materials for extracting pigments from camphor fruit is low. The natural pigment extracted from camphor fruit can replace artificial synthetic pigment to dye food and clothing, and is an excellent substitute for artificial pigment. However, the value of camphor fruit remains to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
CPCC09B61/00
Inventor 袁震宇张勇刘宝亮曹桂萍蒋夫花
Owner CHANGZHOU INST OF TECH
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