CN105331141A - Walnut green husk pigment extracting and dyeing method - Google Patents
Walnut green husk pigment extracting and dyeing method Download PDFInfo
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- CN105331141A CN105331141A CN201410410029.7A CN201410410029A CN105331141A CN 105331141 A CN105331141 A CN 105331141A CN 201410410029 A CN201410410029 A CN 201410410029A CN 105331141 A CN105331141 A CN 105331141A
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- green husk
- walnut
- walnut green
- dyeing
- pigment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The invention belongs to the fields of biology and chemical engineering, and discloses a walnut green husk pigment extracting and dyeing method. Compared with traditional methods, the method disclosed in the invention has the advantages of no pollution and high extraction rate. The method is used to extract a natural pigment which is a walnut green husk pigment, and the walnut green husk pigment is used in dyeing and weaving industries.
Description
Technical field
The invention belongs to biological chemical field, disclose a kind of method being separated pigment from green peel of walnut, compared with traditional method, have pollution-free, extraction yield high.Utilize the present invention can extract walnut green husk pigment, for industries such as dyeing and weavings.
Background technology
Walnut is the plant of Juglandaceae white walnut.Walnut kernel has the effect of brain tonic and intelligence development and is subject to more and more paying attention to the extensively edible of healthy compatriots.In normal walnut production, green peel of walnut is dropped as a kind of waste, and this is not only the waste to resource, and owing to containing a large amount of activeconstituentss in rascal, also can cause detrimentally affect to the ecology of surrounding.
Natural pigment is due to point from natural phant, harmless and be subject to people and welcome widely to human non-toxic.Containing the pigment presenting different colours according to pH height difference in green rind walnut, mainly based on the polyphenolic compound of tannin class.In the tradition that the useful green peel of walnut of China dyes to fabric.
It is solvent that the method reported at present has with ethanol, extracts walnut green husk pigment through ultrasonic dissolution.These methods have the shortcomings such as extraction yield is low.Need a kind of pollution-free, method that extraction yield is high to extract walnut green husk pigment, for the preparation of nontoxic natural plant dyestuff, reach the object that resource utilizes completely.
Summary of the invention
The object of invention is to provide a kind of method, can the extraction walnut green husk pigment of efficient pollution-free and the method for dyeing, and the green rind walnut pigment of extraction may be used for the industries such as dyeing and weaving.
For achieving the above object, being entrainment agent with ethanol, utilizing the method for carbon dioxide upercritical fluid extraction, under given conditions, extract walnut green husk pigment.The industries such as the pigment obtained dyes to fabric under given conditions, application textile dyeing.
Embodiment
Following examples further illustrate content of the present invention, but should not be construed as limitation of the present invention.Without departing from the spirit and substance of the case in the present invention, the amendment do the inventive method, step or condition or replacement, all belong to scope of the present invention.
If do not specialize, the conventional means that technique means used in embodiment is well known to those skilled in the art.In embodiment, involved per-cent (%), if do not particularly point out, per-cent between liquid is volume percent, per-cent between solid is weight percentage, and the per-cent between solid and liquid is weightmeasurement ratio (namely 10% represent in every 100ml liquid containing solid 10g).
1. the pulverizing of green peel of walnut: green peel of walnut is directly crushed to fine particle with beater grinder, crosses 20 mesh sieves.The extraction yield that particle pulverizes thinner pigment is higher.
2. the stored dry of green peel of walnut: because green peel of walnut is difficult to long-time preservation under fresh state.Need to carry out drying to it, and then preserve.Adopt blowing-type loft drier, make its moisture content drop to less than 15%, can in indoor preservation under Air drying condition.
2. carbon dioxide upercritical fluid extraction: feed intake 4 kilograms, solid-liquid ratio is 1: 5-1: 40, and best solid-liquid ratio is 1; 10; Entrainment agent is the ethanol of 20-60%, and optimum concn is 45%; Separation temperature and extraction temperature are 30-60 degree, and the best is 40 degree; Gas material is than being 20-60: 1, and the best is 40: 1, and flow is per hour is 160 liters; Pressure is 10-30MPa, and optimum pressure is 16MPa; Extraction time is 1-6 hour, and Best Times is 2.5 hours.
3. the dyeing of rascal pigment: by cotton fabric or silk fabrics before dyeing, first boils 10 minutes at 100 degree, fiber is obtained fully swelling.Then enter dye at 40-80 degree, optimum temps is 55 degree; Dyeing time is 40-120 minute, and Best Times is 60 minutes; The concentration of walnut green husk pigment is 0.5-5%, and optimum concn is 1.5%; Through washing, drying after having dyeed, carry out mordant dyeing, mordant has been Tai-Ace S 150, and concentration is 1-10%, and optimum concn is 5.5%.Through washing, dry after mordant dyeing, carry out according to GB/T3920-2008 " textile color stability test colour fastness to rubbing ", measurement result is metal to-metal contact 4 ~ 5 grades, wet friction 3 ~ 4 grades, and comply with the national standard requirements the requirement of more than 3 grades.
Claims (10)
1. one kind is the method that entrainment agent utilizes carbon dioxide upercritical fluid extraction walnut green husk pigment and dyeing with ethanol.
2., as claims 1, the pressure of carbonic acid gas is 10-30MPa, and optimum pressure is 16MPa.
3., as claims 1, gas material is than being 20-60: 1, and the best is 40: 1.
4. as claims 1, entrainment agent is the ethanol of 20-60%, and optimum concn is 45%.
5. as claims 1, solid-liquid ratio is 1: 5-1: 40, and best solid-liquid ratio is 1; 10.
6. as claims 1, extraction time is 1-6 hour, and Best Times is 2.5 hours.
7., as claims 1, enter dye at 40-80 degree, optimum temps is 55 degree.
8. as claims 1, dyeing time is 40-120 minute, and Best Times is 60 minutes.
9., as claims 1, the concentration of walnut green husk pigment is 0.5-5%, and optimum concn is 1.5%.
10. the extraction of walnut green husk pigment and a dyeing process, it comprises the step described in claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410029.7A CN105331141A (en) | 2014-08-16 | 2014-08-16 | Walnut green husk pigment extracting and dyeing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410029.7A CN105331141A (en) | 2014-08-16 | 2014-08-16 | Walnut green husk pigment extracting and dyeing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105331141A true CN105331141A (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410410029.7A Pending CN105331141A (en) | 2014-08-16 | 2014-08-16 | Walnut green husk pigment extracting and dyeing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105331141A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105802276A (en) * | 2016-04-20 | 2016-07-27 | 新疆维吾尔自治区环境工程评估中心 | Method for extracting coloring agent from walnut green seedcase |
| CN106879577A (en) * | 2017-02-28 | 2017-06-23 | 江苏泗水纺织有限公司 | A kind of store method of walnut green husk pigment |
-
2014
- 2014-08-16 CN CN201410410029.7A patent/CN105331141A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105802276A (en) * | 2016-04-20 | 2016-07-27 | 新疆维吾尔自治区环境工程评估中心 | Method for extracting coloring agent from walnut green seedcase |
| CN106879577A (en) * | 2017-02-28 | 2017-06-23 | 江苏泗水纺织有限公司 | A kind of store method of walnut green husk pigment |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160217 |