CN104371353A - Preparation method for extracting indigo pigment from indigo naturalis leaf - Google Patents
Preparation method for extracting indigo pigment from indigo naturalis leaf Download PDFInfo
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- CN104371353A CN104371353A CN201410611399.7A CN201410611399A CN104371353A CN 104371353 A CN104371353 A CN 104371353A CN 201410611399 A CN201410611399 A CN 201410611399A CN 104371353 A CN104371353 A CN 104371353A
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- leaf
- indigo naturalis
- indigo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B61/00—Dyes of natural origin prepared from natural sources, e.g. vegetable sources
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- Organic Chemistry (AREA)
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- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
The invention discloses a preparation method for extracting indigo pigment from indigo naturalis leaf, which comprises the following steps: a. cleaning: eluting the raw material indigo naturalis leaf through hand picking, air separation and a cleaning tank to obtain the clean indigo naturalis leaf; b. low-temperature immersion: immersing the clean indigo naturalis leaf in low-temperature dechlorinated softened water to obtain the pure indigo naturalis leaf; c. airing and pulverization: airing the pure indigo naturalis leaf on an operating console, and pulverizing with a high-speed universal pulverizer to obtain the dry indigo naturalis leaf powder; d. high-temperature immersion: proportionally mixing the dry indigo naturalis leaf powder, sodium hydroxide solid and dechlorinated softened hot water in a pigment extraction tank to obtain a solid-liquid mixture; e. filtration: filtering the solid-liquid mixture by a membrane filter to obtain a filtrate; f. concentration: introducing the filtrate into a negative pressure evaporator for concentration to obtain a concentrated solution; and g. refrigeration: refrigerating the concentrated solution to obtain the indigo pigment. The method can lower the cost, enhance the efficiency and implement industrialized production.
Description
Technical field
The present invention relates to a kind of technology of preparing extracting indigo pigment from indigo naturalis leaf.
Background technology
Pigment is divided into natural pigment and the large class of synthetic colour two.The application of natural pigment has long history, and Ancient Times in China just has the record using natural pigment to make the colorants such as textile dye, rice, wine brewing, makeup.After British Pa Jin in 1856 synthesizes the first artificial color-mauvein (e), synthetic colour, because of its lovely luster, strong coloring force, stable in properties and the features such as low price, just starts to play very important role in the life of people.Along with the development of toxicology and analytical chemistry, the mankind recognize that most synthetic colour kind has comparatively serious toxicity and teratogenesis, carinogenicity to human body gradually, countries in the world strictly limit the synthetic colour kind that its security is not yet understood fully in use, and many synthetic colours are deleted in succession from the list of various countries' permission to use.
The textiles that vegetable dye dyeing is produced is to human-body safety, and a variety of plant of extracting natural dyestuff is again the herbal medicine having certain curative effect, and can give fabric certain health therapy function while dyeing, thus its application and development receives publicity day by day.But the chromatogram of vegetable dye is incomplete, and yellow, brown, redness are easy to get relatively, and the cool tones such as green, grey are on the low side, thus limit its application in textile dyeing.The main component of vegetable dye indigo naturalis is indigo, is navy, have natural aromatic, heat-clearing, cool blood, removing toxic substances, refreshing and brain nourishing etc. effect, there is good anti-microbial effect.Bipseudoindoxyl dye is usually prepared by the several frequently seen bluegrass such as acanthaceous indigo, woaded blue and obtain. and the traditional preparation principle of bipseudoindoxyl dye adopts fermentation legal system. first bluegrass shredded and soaks thus leaching look liquid, through the necessary time, indolol condensation in dye liquor, forming blue precipitation to be preserved. blue precipitate can be preserved for a long time as solid dye. and the method extracting indigo pigment from plant refuse indigo naturalis leaf has no report, and industrialization is used less.Thus, research is applicable to the preparation method extracting indigo pigment from indigo naturalis leaf of suitability for industrialized production, seems particularly necessary.
Summary of the invention
For solving the problem, the present invention aims to provide a kind of preparation method extracting indigo pigment from indigo naturalis leaf, and adopts following scheme:
From indigo naturalis leaf, extract a preparation method for indigo pigment, it is characterized in that the concrete steps of the method are:
A, only system: starting material indigo naturalis leaf, successively through manual pick, selection by winnowing and service sink drip washing, removing impurity, silt and the indigo naturalis leaf that goes mouldy, obtain clean indigo naturalis leaf;
B, low temperature soak: the clean indigo naturalis leaf of a step gained is soaked in low temperature antichloration softening water, and soak time is 15-18 hour, and temperature is 40 DEG C, obtains pure indigo naturalis leaf;
C, air-dry and shatter: pure for b step gained indigo naturalis leaf to be placed on operator's console air-dry, then to pulverize with high speed Universalpulverizer, obtain dry indigo naturalis leaf powder;
D, high temperature soak: step c gained being done mass ratio that indigo naturalis leaf powder, sodium hydrate solid and dechlorination soften hot water is that the ratio of 0.009-0.015:1:9-14 mixes in pigment extractor, mixeding liquid temperature is 55-60 DEG C, soak 6 hours, obtain solidliquid mixture;
E, filtration: Step d gained solidliquid mixture is filtered through membrane filter, elimination precipitates, and obtains filtrate;
F, concentrated: step e gained filtrate is passed into vacuum evaporator and concentrates, 10 parts of filtrates are concentrated into 2-5 part, obtain concentrated solution;
G, refrigeration: refrigerated by the concentrated solution of gained in f step, refrigerating temperature is 0-4 DEG C, obtains indigo pigment.
Wherein, the drip washing time in described step a is 5-10 minute.
Advantage of the present invention is: the method extracting indigo pigment from indigo naturalis leaf, can reduce costs, raise the efficiency, and can realize suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 extracts the preparation flow of indigo pigment from indigo naturalis leaf.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail:
From indigo naturalis leaf, extract a preparation method for indigo pigment, it is characterized in that the concrete steps of the method are:
A, only system: starting material indigo naturalis leaf, successively through manual pick, selection by winnowing and service sink drip washing, the drip washing time is 5-10 minute, and removing impurity, silt and the indigo naturalis leaf that goes mouldy, obtain clean indigo naturalis leaf;
B, low temperature soak: the clean indigo naturalis leaf of a step gained is soaked in low temperature antichloration softening water, and soak time is 15-18 hour, and temperature is 40 DEG C, obtains pure indigo naturalis leaf;
C, air-dry and shatter: pure for b step gained indigo naturalis leaf to be placed on operator's console air-dry, then to pulverize with high speed Universalpulverizer, obtain dry indigo naturalis leaf powder;
D, high temperature soak: step c gained being done mass ratio that indigo naturalis leaf powder, sodium hydrate solid and dechlorination soften hot water is that the ratio of 0.009-0.015:1:9-14 mixes in pigment extractor, mixeding liquid temperature is 55-60 DEG C, soak 6 hours, obtain solidliquid mixture;
E, filtration: Step d gained solidliquid mixture is filtered through membrane filter, elimination precipitates, and obtains filtrate;
F, concentrated: step e gained filtrate is passed into vacuum evaporator and concentrates, 10 parts of filtrates are concentrated into 2-5 part, obtain concentrated solution;
G, refrigeration: refrigerated by the concentrated solution of gained in f step, refrigerating temperature is 0-4 DEG C, obtains indigo pigment.
Below disclose the present invention with preferred embodiment, so it is not intended to limiting the invention, and all technical schemes taking the form of equivalent replacement or equivalent transformation to obtain, all drop within protection scope of the present invention.
Claims (2)
1. from indigo naturalis leaf, extract a preparation method for indigo pigment, it is characterized in that the concrete steps of the method are:
A, only system: starting material indigo naturalis leaf, successively through manual pick, selection by winnowing and service sink drip washing, removing impurity, silt and the indigo naturalis leaf that goes mouldy, obtain clean indigo naturalis leaf;
B, low temperature soak: the clean indigo naturalis leaf of a step gained is soaked in low temperature antichloration softening water, and soak time is 15-18 hour, and temperature is 40 DEG C, obtains pure indigo naturalis leaf;
C, air-dry and shatter: pure for b step gained indigo naturalis leaf to be placed on operator's console air-dry, then to pulverize with high speed Universalpulverizer, obtain dry indigo naturalis leaf powder;
D, high temperature soak: step c gained being done mass ratio that indigo naturalis leaf powder, sodium hydrate solid and dechlorination soften hot water is that the ratio of 0.009-0.015:1:9-14 mixes in pigment extractor, mixeding liquid temperature is 55-60 DEG C, soak 6 hours, obtain solidliquid mixture;
E, filtration: Step d gained solidliquid mixture is filtered through membrane filter, elimination precipitates, and obtains filtrate;
F, concentrated: step e gained filtrate is passed into vacuum evaporator and concentrates, 10 parts of filtrates are concentrated into 2-5 part, obtain concentrated solution;
G, refrigeration: refrigerated by the concentrated solution of gained in f step, refrigerating temperature is 0-4 DEG C, obtains indigo pigment.
2. a kind of preparation method extracting indigo pigment from indigo naturalis leaf according to claim 1, is characterized in that the drip washing time in described step a is 5-10 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611399.7A CN104371353A (en) | 2014-11-04 | 2014-11-04 | Preparation method for extracting indigo pigment from indigo naturalis leaf |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611399.7A CN104371353A (en) | 2014-11-04 | 2014-11-04 | Preparation method for extracting indigo pigment from indigo naturalis leaf |
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| CN104371353A true CN104371353A (en) | 2015-02-25 |
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| CN201410611399.7A Pending CN104371353A (en) | 2014-11-04 | 2014-11-04 | Preparation method for extracting indigo pigment from indigo naturalis leaf |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086574A (en) * | 2015-08-05 | 2015-11-25 | 安徽岍汧漆业有限公司 | Flame-retardant indigo blue pigment special for oil paint and preparation method thereof |
| CN106336685A (en) * | 2016-08-24 | 2017-01-18 | 张永成 | Method for extracting natural dye by using biological fermentation method, and applications thereof |
| CN106349736A (en) * | 2016-08-05 | 2017-01-25 | 雷春生 | Preparation method of pure organic photosensitive dye |
| CN112898798A (en) * | 2019-11-19 | 2021-06-04 | 哈工大机器人南昌智能制造研究院 | Method for preparing indigo from fresh leaves of kale |
| CN115558314A (en) * | 2022-09-20 | 2023-01-03 | 江苏本草新萃生物科技有限公司 | Processing method for making kalanchoe leaves as water-soluble indigo pigment extraction raw material |
-
2014
- 2014-11-04 CN CN201410611399.7A patent/CN104371353A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086574A (en) * | 2015-08-05 | 2015-11-25 | 安徽岍汧漆业有限公司 | Flame-retardant indigo blue pigment special for oil paint and preparation method thereof |
| CN106349736A (en) * | 2016-08-05 | 2017-01-25 | 雷春生 | Preparation method of pure organic photosensitive dye |
| CN106336685A (en) * | 2016-08-24 | 2017-01-18 | 张永成 | Method for extracting natural dye by using biological fermentation method, and applications thereof |
| CN112898798A (en) * | 2019-11-19 | 2021-06-04 | 哈工大机器人南昌智能制造研究院 | Method for preparing indigo from fresh leaves of kale |
| CN115558314A (en) * | 2022-09-20 | 2023-01-03 | 江苏本草新萃生物科技有限公司 | Processing method for making kalanchoe leaves as water-soluble indigo pigment extraction raw material |
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Application publication date: 20150225 |
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