Method for preparing sodium copper chlorophyllin in red-purple pitaya sterm

A technology of copper sodium salt of chlorophyll and Xianmiguo, which is applied in the fields of copper organic compounds and organic chemistry, and can solve the problems of research and development of Xianmiguo chlorophyll that have not been seen

Inactive Publication Date: 2009-03-18
赵雪梅
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Problems solved by technology

Since the 1970s, my country has done a lot of work on the biological characteristics, ecological adaptability, planting resources, chemical components, pharmac

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  • Method for preparing sodium copper chlorophyllin in red-purple pitaya sterm

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Experimental program
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Effect test

Embodiment 1

[0048] Embodiment 1: the best process for preparing copper chlorophyllin sodium salt

[0049] Take 5kg of fairy honey fruit stems, wash and dry, remove the part that does not contain chlorophyll and other impurities, and smash it for later use; use acetone:ethanol (4:1) mixed solution as extractant, the ratio of solid to liquid (W / V ) is 1:4, reflux extraction at 60°C for 2h, saponification with 5% NaOH in 70°C water bath for 60min (pH=11~12), 20%CuSO 4 The solution was copper-substituted at 60°C for 60 minutes, the dosage was copper sulfate: alkali solution = 1:6 (V / V), and finally dissolved in acetone, 5% NaOH ethanol solution was salted, and the yield of sodium copper chlorophyllin was 1.73%.

Embodiment 2

[0050] Embodiment 2: the influence of extraction solvent on yield

[0051] Take 5 kg of fairy fruit stems, wash and dry them, remove the part that does not contain chlorophyll and other impurities, and smash them for later use; use ethanol as the extractant, the ratio of solid to liquid (W / V) is 1:4, and extract under reflux at 60°C 2h, saponification with 5% NaOH in 70°C water bath for 60min (pH=11~12), 20% CuSO 4 The solution was copper-substituted at 60°C for 60 minutes, the dosage was copper sulfate: alkali solution = 1:6 (V / V), and finally dissolved in acetone, 5% NaOH ethanol solution was salted, and the yield of sodium copper chlorophyllin was 1.45%.

Embodiment 3

[0052] Embodiment 3: the influence of temperature on yield

[0053] Take 5kg of fairy honey fruit stems, wash and dry, remove the part that does not contain chlorophyll and other impurities, and smash it for later use; use acetone:ethanol (4:1) mixed solution as extractant, the ratio of solid to liquid (W / V ) is 1:4, reflux extraction at 60°C for 2h, saponification with 5% NaOH in 70°C water bath for 60min (pH=11~12), 20%CuSO 4 The solution was copper-substituted at 80°C for 60 minutes, the dosage was copper sulfate: alkali solution = 1:6 (V / V), and finally dissolved in acetone, 5% NaOH ethanol solution was salted, and the yield of sodium copper chlorophyllin was 1.53%.

[0054] Copper chlorophyllin sodium salt prepared from fairy honey stems has good stability of most metal ions in neutral and alkaline solutions at a temperature lower than 80°C; glucose and sucrose have little effect on the stability of copper chlorophyllin sodium salt. Long-term outdoor sunlight exposure an...

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Abstract

The invention discloses a method for preparing sodium copper chlorophyll from a pitaya fruit stem. The method uses a fresh pitaya fruit stem as a raw material to extract chlorophyll and prepare the sodium copper chlorophyll through the steps of pre-processing the material, reflux extracting, saponifying, concentrating, extracting, regulating acid and putting copper in, salifying and drying. The invention also researches the stability of the sodium copper chlorophyll, and the color agent produced has fresh color, stable performance, and strong coloring power and is safe and nontoxic. Therefore the color agent can be widely applied for food coloration and as cosmetics and pharmaceutical colorant.

Description

technical field [0001] The invention relates to a preparation method for extracting sodium copper chlorophyllin from fairy honey stems. Background technique [0002] With the continuous deepening of toxicology and biological research, people gradually found that most synthetic food colorings such as azo pigments and aniline pigments can form carcinogens p-aniline and aminophenol in the human body, and long-term consumption will cause serious harm. human health. With the improvement of people's health requirements, synthetic pigments will be replaced by natural pigments. Therefore, vigorously developing natural food pigments and studying their stability has become an important topic in the food industry. [0003] Chlorophyll is a green pigment developed earlier, and it is one of the most widely distributed natural pigments on the earth, widely present in leaves and other organs of green plants. Chlorophyll is non-toxic and edible, and is a good natural food coloring. Howev...

Claims

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Application Information

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IPC IPC(8): C07D487/22C07F1/08
Inventor 赵雪梅孙开成
Owner 赵雪梅
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