CN102675902A - Extracting method of water-soluble orange peel yellow pigment - Google Patents
Extracting method of water-soluble orange peel yellow pigment Download PDFInfo
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- CN102675902A CN102675902A CN201110064063XA CN201110064063A CN102675902A CN 102675902 A CN102675902 A CN 102675902A CN 201110064063X A CN201110064063X A CN 201110064063XA CN 201110064063 A CN201110064063 A CN 201110064063A CN 102675902 A CN102675902 A CN 102675902A
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- orange peel
- water
- yellow pigment
- extraction
- lixiviate
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Abstract
The invention discloses an extracting method of water-soluble orange peel yellow pigment. The extracting method comprises enabling orange peel to serve as a raw material, and obtaining the orange peel yellow pigment after the steps of raw material selection, raw material pretreatment, leaching, concentration, distillation and drying and the like. The extracting method is simple in process flow and low in cost, and the extracted pigment is natural pigment, is natural in color and good in dyeability and is mainly used as a colorant for beverages, candies, jams and cakes and the like.
Description
Technical field
The invention belongs to field of fine chemical, relate to a kind of process for extracting of pigment, be specifically related to a kind of process for extracting of water-soluble orange peel yellow pigment.
Background technology
Food dye is a kind of of pigment, is to make food change the foodstuff additive of original color to a certain extent.Food dye is divided into two kinds of natural and synthetic; Natural food colour is the pigment that directly from animal vegetable tissue, extracts, and is harmless, synthetic food color; Be to use the aniline dyestuff of separating in the coal tar to process as raw material; The pigment of these synthetic is because of being prone to bring out poisoning, diarrhea even cancer, and is harmful, so can not use more or need not as far as possible.The extraction process of existing yellow pigment is complicated, and cost is higher, and the yellow pigment performance of extraction is stable inadequately, and color and luster is dim.
Summary of the invention
Goal of the invention: the present invention provides the process for extracting of a kind of extraction process a kind of water-soluble orange peel yellow pigment simple, with low cost in order to solve the deficiency of prior art, and the pigment color and luster of extraction is natural, tint permanence is good.
The technical scheme that the present invention adopts: a kind of process for extracting of water-soluble orange peel yellow pigment, said water-soluble orange peel yellow pigment extract concrete steps and comprise:
(1) raw material is chosen and pre-treatment: fresh orange peel is removed silt and the foreign material of carrying secretly in the orange peel, and clean with the clear water Rapid Cleaning, be cut into 3～5mm fine grained chippings;
(2) lixiviate: pretreated orange peel is put into the lixiviate still, and the ethanol with 95% carries out the normal temperature lixiviate, and ethanol is added to and floods fully till the orange peel, under constantly stirring lixiviate 3-5 hour;
(3) concentrate: adopt the vacuum filtration method to filter after the lixiviate, gained filtrating is being carried out concentrating under reduced pressure below 60 ℃, is concentrated to residual solution and has only stoste 10%～15% o'clock, stops to concentrate, and lets it be cooled to normal temperature, changes in the extraction kettle;
(4) extraction: in extraction kettle, use equal-volume petroleum ether extraction 3 times respectively, extraction is carried out in encloses container, and middling speed stirs, and about 0.5-1 of extraction time hour, standing demix then;
(5) water-soluble orange peel yellow pigment obtains: the extract remainder of extract layer is even with the absolute ethyl alcohol dilution of 3 times of volumes, leave standstill to the complete sedimentation of insoluble suspended substance, and remove sediment then; Clear liquor is put underpressure distillation in the underpressure distillation device, and distillation temperature is controlled at below 60 ℃, when distilling no ethanol and distillating; Stop distillation; Residuum is moved to vacuum-drying in the vacuum drying oven, remove residual ethanol and moisture, the reddish black powder that obtains is water-soluble orange peel yellow pigment.
Beneficial effect: technical process of the present invention is simple, and is with low cost, and the pigment of extraction is a natural pigment, the color and luster nature, and tint permanence is good, mainly is used as the tinting material of beverage, candy, jam and cake etc.
Embodiment
Below in conjunction with specific embodiment the present invention is further described:
Embodiment 1
50 kilograms of fresh orange peel are removed silt and the foreign material of carrying secretly in the orange peel, clean with the clear water Rapid Cleaning, be cut into the 3mm fine grained chippings; Pretreated orange peel is put into the lixiviate still, and the ethanol with 95% carries out the normal temperature lixiviate, and ethanol is added to and floods fully till the orange peel, and lixiviate is 3 hours under constantly stirring; Adopt the vacuum filtration method to filter after the lixiviate, gained filtrating is being carried out concentrating under reduced pressure below 60 ℃, is concentrated to residual solution when having only stoste 10%, stops to concentrate, and lets it be cooled to normal temperature, changes in the extraction kettle; In extraction kettle, use equal-volume petroleum ether extraction 3 times respectively, extraction is carried out in encloses container, and middling speed stirs, about 0.5 hour of extraction time, standing demix then; The extract remainder of extract layer is even with the absolute ethyl alcohol dilution of 3 times of volumes, leave standstill to the complete sedimentation of insoluble suspended substance, remove sediment then; Clear liquor is put underpressure distillation in the underpressure distillation device, and distillation temperature is controlled at below 60 ℃, when distilling no ethanol and distillating; Stop distillation; Residuum is moved to vacuum-drying in the vacuum drying oven, remove residual ethanol and moisture, the reddish black powder that obtains is water-soluble orange peel yellow pigment.
Embodiment 2
60 kilograms of fresh orange peel are removed silt and the foreign material of carrying secretly in the orange peel, clean with the clear water Rapid Cleaning, be cut into the 5mm fine grained chippings; Pretreated orange peel is put into the lixiviate still, and the ethanol with 95% carries out the normal temperature lixiviate, and ethanol is added to and floods fully till the orange peel, and lixiviate is 5 hours under constantly stirring; Adopt the vacuum filtration method to filter after the lixiviate, gained filtrating is being carried out concentrating under reduced pressure below 60 ℃, is concentrated to residual solution when having only stoste 15%, stops to concentrate, and lets it be cooled to normal temperature, changes in the extraction kettle; In extraction kettle, use equal-volume petroleum ether extraction 3 times respectively, extraction is carried out in encloses container, and middling speed stirs, about 1 hour of extraction time, standing demix then; The extract remainder of extract layer is even with the absolute ethyl alcohol dilution of 3 times of volumes, leave standstill to the complete sedimentation of insoluble suspended substance, remove sediment then; Clear liquor is put underpressure distillation in the underpressure distillation device, and distillation temperature is controlled at below 60 ℃, when distilling no ethanol and distillating; Stop distillation; Residuum is moved to vacuum-drying in the vacuum drying oven, remove residual ethanol and moisture, the reddish black powder that obtains is water-soluble orange peel yellow pigment.
Claims (1)
1. the process for extracting of a water-soluble orange peel yellow pigment is characterized in that: said water-soluble orange peel yellow pigment extracts concrete steps and comprises:
(1) raw material is chosen and pre-treatment: fresh orange peel is removed silt and the foreign material of carrying secretly in the orange peel, and clean with the clear water Rapid Cleaning, be cut into 3～5mm fine grained chippings;
(2) lixiviate: pretreated orange peel is put into the lixiviate still, and the ethanol with 95% carries out the normal temperature lixiviate, and ethanol is added to and floods fully till the orange peel, under constantly stirring lixiviate 3-5 hour;
(3) concentrate: adopt the vacuum filtration method to filter after the lixiviate, gained filtrating is being carried out concentrating under reduced pressure below 60 ℃, is concentrated to residual solution and has only stoste 10%～15% o'clock, stops to concentrate, and lets it be cooled to normal temperature, changes in the extraction kettle;
(4) extraction: in extraction kettle, use equal-volume petroleum ether extraction 3 times respectively, extraction is carried out in encloses container, and middling speed stirs, and about 0.5-1 of extraction time hour, standing demix then;
(5) water-soluble orange peel yellow pigment obtains: the extract remainder of extract layer is even with the absolute ethyl alcohol dilution of 3 times of volumes, leave standstill to the complete sedimentation of insoluble suspended substance, and remove sediment then; Clear liquor is put underpressure distillation in the underpressure distillation device, and distillation temperature is controlled at below 60 ℃, when distilling no ethanol and distillating; Stop distillation; Residuum is moved to vacuum-drying in the vacuum drying oven, remove residual ethanol and moisture, the red-black toner art that obtains is water-soluble orange peel yellow pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110064063XA CN102675902A (en) | 2011-03-16 | 2011-03-16 | Extracting method of water-soluble orange peel yellow pigment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110064063XA CN102675902A (en) | 2011-03-16 | 2011-03-16 | Extracting method of water-soluble orange peel yellow pigment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102675902A true CN102675902A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110064063XA Pending CN102675902A (en) | 2011-03-16 | 2011-03-16 | Extracting method of water-soluble orange peel yellow pigment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403357A (en) * | 2014-10-29 | 2015-03-11 | 宁波广源纺织品有限公司 | Orange peel vegetable dye extraction method |
| CN109593383A (en) * | 2019-01-07 | 2019-04-09 | 梅丽玲 | The method of modifying of orange peel pigment and its application in cotton fabric dyeing process |
-
2011
- 2011-03-16 CN CN201110064063XA patent/CN102675902A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403357A (en) * | 2014-10-29 | 2015-03-11 | 宁波广源纺织品有限公司 | Orange peel vegetable dye extraction method |
| CN109593383A (en) * | 2019-01-07 | 2019-04-09 | 梅丽玲 | The method of modifying of orange peel pigment and its application in cotton fabric dyeing process |
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Application publication date: 20120919 |