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Abalone shell pigment and preparation method thereof

A kind of technology of abalone shell and pigment, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of heavy metal accumulation, achieve efficient removal, reduce production costs, and prevent residues

Active Publication Date: 2015-07-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Shell organisms are also easier to absorb and enrich metal elements, especially alkaline earth elements and heavy metal elements, resulting in higher content of alkaline earth elements and heavy metals such as calcium and magnesium in the outer shell. Therefore, when separating and purifying natural pigments from marine shells, it is necessary Take measures to remove the metal elements adsorbed and enriched by the outer layer of abalone shells and algae pigments to prevent the residue of heavy metals, which may lead to safety problems such as heavy metal accumulation during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Put 18.6 kg of the original shell of variegated abalone into the extraction tank, add 3 times the weight ratio of 6 mol / L hydrochloric acid solution, and extract the algae pigment in the outer layer of the abalone shell at room temperature. After 12 minutes, when no carbon dioxide bubbles are generated , add enough sodium oxalate to completely decalcify and remove impurities, separate solid and liquid, precipitate the filtrate under the condition of pH=10.0, wash the precipitate with tap water and 95wt.% ethanol until neutral, and dry to obtain abalone shell pigment .

[0032] After testing, the pigment has the characteristics of acid solubility, alkali insolubility, water insolubility and alcohol insolubility. The blue-green pigment E 490 1% 1cm =98, red brown pigment E 600 1% 1cm =79, calcium content 2.25%, total nitrogen 6.89%, total sugar 4.68%.

Embodiment 2

[0034] Put 12.3 kg of broken shells of wrinkled pan abalone into the extraction tank, add 4 mol / L nitric acid solution with a weight ratio of 6 times, and extract the algae pigment on the outer layer of the abalone shell at 37°C. When no carbon dioxide bubbles are generated, add enough A large amount of sodium carbonate aqueous solution is completely decalcified and impurity removed, solid-liquid separation, the filtrate is precipitated under the condition of pH=7.0, the precipitate is washed with water and 50wt.% methanol until it is neutral, and dried to obtain the abalone shell pigment.

[0035] After testing, the pigment has the characteristics of acid solubility, alkali insolubility, water insolubility and alcohol insolubility. The blue-green pigment E 490 1% 1cm =76, red brown pigment E 600 1% 1cm =58, calcium content 1.03%, total nitrogen 5.20%, total sugar 3.16%.

Embodiment 3

[0037] 6.1 kg of Australian abalone shell powder is placed in the extraction tank, using 10 times the weight ratio of acetic acid aqueous solution, under the condition of 50 ° C, to extract the algae pigment in the outer layer of the abalone shell. Not less than 2 mol / L, when there are no more carbon dioxide bubbles, add enough phosphoric acid to decalcify and remove impurities completely, separate solid and liquid, precipitate the filtrate under the condition of pH=8.5, wash the precipitate with water, and add 50wt.% methanol -50wt.% acetone mixed aqueous solution was washed to neutral, air-dried to obtain abalone shell pigment.

[0038] After testing, the pigment has the characteristics of acid solubility, alkali insolubility, water insolubility and alcohol insolubility. The blue-green pigment E 4901% 1cm =86, red brown pigment E 600 1% 1cm =65, calcium content 1.25%, total nitrogen 4.38%, total sugar 4.25%.

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PUM

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Abstract

The invention discloses an abalone shell pigment and a preparation method thereof. An abalone shell is adopted as a raw material, an algae pigment at the outer layer of the abalone shell is extracted by adopting an acid solution, and the abalone shell pigment is processed in decalcifying, purifying and precipitating manners. The abalone shell pigment has the characteristics of acid solubility, alkali insolubility, water insolubility and hydrophilic organic solvent insolubility. E490<1%>1cm of a blue-green pigment is greater than or equal to 75, E600<1%>1cm of a reddish-brown pigment is greater than or equal to 50, the calcium content is smaller than or equal to 2.5%, the total nitrogen is smaller than or equal to 7.5%, and the total sugar is smaller than or equal to 5.0%. The abalone shell pigment can be efficiently extracted under the conditions of room temperature, low acid concentration and short time, active ingredients of the abalone shell pigment are reserved to the maximal extent by the processing procedures of purifying, precipitating, washing, drying and the like; the abalone shell pigment is novel in conception, abundant in raw materials, high in production efficiency, low in preparation cost, simple in technology, green and environment-friendly, convenient to implement, and great in generalization performance, and a new path is found out for high-valued utilization of the abalone shell.

Description

technical field [0001] The invention relates to a separation and purification of natural pigments from marine shells and a method thereof, more specifically to an abalone shell pigment and a preparation method thereof, belonging to the fields of high-value utilization of marine shell resources and green chemical preparation of fine chemicals. Background technique [0002] Abalone shell, commonly known as Shijuming, is the shell of abalone such as variegated abalone, wrinkled abalone, Australian abalone, ear abalone, sheep abalone and white abalone. It is one of the commonly used medicinal materials in traditional Chinese medicine. It is used for the treatment of headache, dizziness, red eyes, blurred vision and blue blindness ("Chinese Pharmacopoeia" 2010 edition). [0003] Variegated abalone is mainly distributed in temperate and subtropical waters such as Zhejiang, Fujian, Taiwan, Guangdong, Hainan, and Guangxi in China. It is one of the excellent cultured varieties in sou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/54
Inventor 陈剑锋沈秋阳陈浩
Owner FUZHOU UNIV
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