CN110041727A - A kind of method of ultrasound assisted extraction beet red pigment - Google Patents
A kind of method of ultrasound assisted extraction beet red pigment Download PDFInfo
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- CN110041727A CN110041727A CN201910413468.6A CN201910413468A CN110041727A CN 110041727 A CN110041727 A CN 110041727A CN 201910413468 A CN201910413468 A CN 201910413468A CN 110041727 A CN110041727 A CN 110041727A
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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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- 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
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0096—Purification; Precipitation; Filtration
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Abstract
It the invention discloses a kind of method of ultrasound assisted extraction beet red pigment, takes fresh red beet to wipe and sprays the citric acid solution that concentration is 0.5% at silk, be put into drying box and be dried to and be completely dried, break into powdered sieving, obtain red beet powder；It is added in the citric acid solution of pH=3；Pigment extraction is carried out to red beet powder with 0.4% citric acid solution, is centrifuged, is taken supernatant, obtain haematochrome leaching liquor；Configure activating solution；The beet red pigment leaching liquor and activating solution of 100ml are added in 200ml conical flask and fermented, thallus is centrifuged off, obtains beet red pigment fermentation liquid；Beet red pigment fermentation liquid handle except glue；Clarifying treatment 1h is carried out to beet red pigment fermentation liquid using tanning solution；Pigment leaching liquor is concentrated into 10ml, is freeze-dried into beet red pigment powder.Compared with prior art, the present invention can shorten broken time, the broken speed of quickening using ultrasonic wave extraction, shorten extraction time, improve recovery rate, recovery rate can reach 18.2%.
Description
Technical field
The present invention relates to natural pigment production technical field, especially a kind of side of ultrasound assisted extraction beet red pigment
Method.
Background technique
Red beet is commonly used for diet, and people are also referred to as flame dish, leaf beet etc., is a kind of biennial draft
Chenopod, meat root tuber have different shape, and epidermis darkviolet is more smooth.Red beet blade is diamond shaped, is presented dark violet red
Color, compared with other plant, plant is shorter and smaller and cold resistance is stronger.The states such as America and Europe, Russia, Denmark, Italy are originated in source
The new varieties such as U.S.'s red beet have also been introduced in family, the place such as Xinjiang, the Shandong in China, and Inner Mongolia and Lin County, Tuo Ke
The current also successful introduction in the places such as support county and the plantation for having certain scale.
Nutriment of the red beet not only containing necessary for human such as carbohydrate, minerals, vitamins, and containing betanin,
The indispensable many microelements of the human bodies such as glycine betaine.The nutrition pharmacologic action of red beet is good: (1) in red beet root tuber
Glucide can eliminate toxins in human body, exclude waste in vivo, while can promote the digestion and absorption of stomach, balanced youngster
The nutrition of virgin old man.(2) higher magnesium elements are rich in red beet, can releive vasotonia degree, effectively prevent thrombus
It is formed, has the function of preventing hypertension.(3) Flavonoid substances contained in red beet are played by softening and expanding blood vessel
The effect of blood activating and promoting tissue regeneration.(4) the numerous microelements contained in red beet, are of crucial importance, and calcium, phosphorus etc. can be prevented and treated
Osteoporosis；Iron, magnesium, potassium etc. can supplement the nutrients, strengthen immunity；Zn-ef ficiency has larger benefit to eyes；Selenium and folic acid have
It is anti-oxidant, it is antitumor the effects of.(5) copper in red beet and ferro element mutually promote, interact, and maintain and enhance people
The hematopoiesis function of body improves the immunity of human body, is natural good merchantable brand of enriching blood, and is the preferable choosing that Anemic patients and women enrich blood
It selects.(6) glycine betaine contained in red beet can promote absorption of the human body to protein, improve liver function, prevent and treat various livers
Disease has blood pressure lowering, antitumor, anticancer and other effects.(7) oxidation resistance of red beet element helps to enhance exempting from for human body
Epidemic disease power largely reduces the probability of human body illness.
Betacyanins account for 90% or more in beet pigments, and betaxanthin is less than 10%.Beet red pigment it is main at
Dividing is carbohydrate derivative --- beet red glycosides.Glucosides substance accounts for 95%, and isomers therein, free state account for 5%.By preceding
The many experiments of phase are it can be proved that beet red pigment bright color, safe and non-toxic, and colorability is more compared with other natural food colours
By force, at the same it is medicinal, in terms of play very big effect, such as blood pressure lowering, anti-oxidant, antitumor etc..Food color
Aspect, beet red pigment is bright in colour and full of nutrition, is chiefly used in the food such as beverage, jelly, can, ice cream, cake, sausage
Coloring, both increased
The beautiful of food improves nutritive value of food again；In terms of Medicines and Health Product, scholar Lv Xiaoling et al. passes through
The oxidation resistance of beet red pigment is studied, discovery beet red glycosides is that beet red pigment has the main reason for resistance to oxidation.Together
When beet red pigment in the glycine betaine that contains, can promote liver function, can effectively prevent chronic hepatitis, cirrhosis, toxic hepatitis
Equal liver diseases, so beet red pigment cannot be only used for beautification drug appearance, being conducive to special population takes drug, Er Qieke
For the development of drug and health care product, nutriment and prevention disease are provided for human body；In terms of cosmetics, by skin
The favor of easily sensitive easily allergic human population, because it is pure
Naturally, deep processing that is safe and harmless, can be used for lipstick, muffin, shampoo, hair dye, therefore beet red pigment exists
There is biggish development potentiality in the development of color cosmetic and anti-aging cosmetics.In addition, newest research results are found,
Beet red pigment can dye wool under the conditions of low temperature acid, therefore the application prospect of beet red pigment is very
Wide.In addition, extracting, the megasse after pigment can be also used for Alcohol Production, compound fertilizer, animal feed etc. are done in fermentation, mention
The comprehensive utilization value of high beet.
The method for usually preparing beet red pigment is finally to obtain product using extraction, concentration, drying.Due to there is no essence
Technique processed, therefore pigment is impure more, pigment content is low, there is peculiar smell, is restricted it in application and popularization.For height
The preparation of purity fine work, J.Food Sci, 44,1979 Lee and Wiley disclose a kind of resin cation of Dowex50 × 2
Beet red is adsorbed, is concentrated after being freed with NaCl solution, is purified with polyvinylpyrrolidone, then be freeze-dried, finally obtained
High-purity fine work, this method, which is freed, needs suitable stoste is twentyfold to free liquid, and these are concentrated free liquid and to consume largely
The energy, while polyvinylpyrrolidone is expensive, therefore this method is that infeasible cost is very high in large-scale production.
Summary of the invention
The invention aims to solve the deficiencies in the prior art, providing one kind can at a lower temperature most
The method of the ultrasound assisted extraction beet red pigment of the effective component of the extraction beet red pigment of big degree.
In order to achieve the above objectives, the present invention is implemented according to following technical scheme:
A kind of method of ultrasound assisted extraction beet red pigment, comprising the following steps:
(1) fresh red beet is taken, cleans, block is cut into after peeling, the red beet block for getting colors bright-coloured is wiped into silk, is sprayed
The citric acid solution color protection that concentration is 0.5%, is put into drying box, weighs sample weight every 1h, until quality is no longer reduced, i.e.,
It is dried to and is completely dried, break into powdered sieving with food blender, obtain red beet powder；
(2) the red beet powder after sieving is added to the citrate buffer solution of pH=3, homogeneous by weight 1:1 ratio
3min is slightly considered with cloth bag, then is freeze-dried after being filtered with filter paper；
(3) the red beet powder for weighing 1.00g in step (2), is placed in a beaker, and 50ml is added and concentration is 0.4%
Citric acid solution, extraction temperature is 20-30 DEG C, extraction time 25-35min, at ultrasonic power 480-600w, to red sweet tea
Vegetable powder end carries out pigment extraction, and centrifugation takes supernatant, obtains haematochrome leaching liquor；
(4) it configures activating solution: weighing a certain amount of dried yeast powder and be placed in 100m L beaker, dilute saccharomycete with distilled water
2% glucose solution is added to final concentration 1 × 10 in thallus6The bacteria suspension of cfu/m L activates in 38 DEG C of thermostat water baths
30min is bred with this for thallus culture；
(5) the beet red pigment leaching liquor of 100ml is added in 200ml conical flask, bottleneck is stoppered with tampon and is placed on shaking table
On, it ferments under the conditions of setting fermentation 1-4h, 20-30 DEG C of fermentation temperature, revolving speed 100-250rpm and inoculum concentration 3-4%,
It is centrifuged off thallus, obtains beet red pigment fermentation liquid；
(6) it is red to beet to account for the pectase that the percent by volume of beet red pigment fermentation liquid is 0.02-0.04% for addition
Plain fermentation liquid handle except glue；
(7) clarifying treatment is carried out to beet red pigment fermentation liquid using one of pectase, tanning solution, diatomite
1h；
(8) setting vacuum degree is 0.04MPa, is arranged 50-60 DEG C of thickening temperature, 200ml pigment leaching liquor is concentrated into
10ml is freeze-dried into beet red pigment powder.
As a further preferred embodiment of the present invention, red beet block wipes the silk at diameter 4mm in the step (1).
As a further preferred embodiment of the present invention, the concentration of citric acid is 0.5% in the step (2).
It is 25 DEG C of extraction temperature in the step (3), extraction time 30min, super as a further preferred embodiment of the present invention
Acoustical power 540w.
As a further preferred embodiment of the present invention, shaking speed 250rpm in the step (5), 25 DEG C of fermentation temperature,
Fermentation time 4h, inoculum concentration 4%.
As a further preferred embodiment of the present invention, pectase content 0.03% in the step (6).
As a further preferred embodiment of the present invention, the clarifying agent in the step (7) is tanning solution, the beet red
The additive amount of tanning solution is 50mg/L in pigment fermentation liquid.
As a further preferred embodiment of the present invention, 55 DEG C of thickening temperature in the step (8).
Compared with prior art, the present invention is had the following beneficial effects: using ultrasonic wave extraction beet red pigment
(1) ultrasonic wave extraction can shorten the broken time, accelerate broken speed, shorten extraction time, improve recovery rate, mention
Take rate that can reach 18.2%；
(2) physical reactions only occur for ultrasonic-leaching, can't change the bioactivity of pigment；
(3) by ultrasonic wave, the molecule in liquid is promoted to gather to form biggish particle precipitating, accelerate effectively at
The extraction divided；
(4) extract component of some pigments is affected by the high temperature larger, and can be dropped to this influence using ultrasonic wave
It is minimum.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, with reference to embodiments, to the present invention into
Row is further to be described in detail.Described herein the specific embodiments are only for explaining the present invention, is not used to limit invention.
Embodiment 1
(1) fresh red beet is taken, cleans, block is cut into after peeling, the red beet block for getting colors bright-coloured is wiped into diameter 4mm
Silk, spray concentration be 0.5% citric acid solution color protection, be put into drying box, weigh sample weight every 1h, until quality not
It reduces again, that is, is dried to and is completely dried, break into powdered sieving with food blender, obtain red beet powder；
(2) the red beet powder after sieving is added to the citrate buffer solution of pH=3, homogeneous by weight 1:1 ratio
3min is slightly considered with cloth bag, then is freeze-dried after being filtered with filter paper；
(3) the red beet powder for weighing 1.00g in step (2), is placed in a beaker, and 50ml is added and concentration is 0.4%
Citric acid solution, extraction temperature is 20 DEG C, extraction time 25min, at ultrasonic power 480w, is carried out to red beet powder
Pigment extraction, centrifugation take supernatant, obtain haematochrome leaching liquor；
(4) it configures activating solution: weighing a certain amount of dried yeast powder and be placed in 100m L beaker, dilute saccharomycete with distilled water
2% glucose solution is added to final concentration 1 × 10 in thallus6The bacteria suspension of cfu/m L activates in 38 DEG C of thermostat water baths
30min is bred with this for thallus culture；
(5) the beet red pigment leaching liquor of 100ml is added in 200ml conical flask, bottleneck is stoppered with tampon and is placed on shaking table
On, it ferments under the conditions of setting fermentation 1h, 20 DEG C of fermentation temperature, revolving speed 100rpm and inoculum concentration 3%, is centrifuged off bacterium
Body obtains beet red pigment fermentation liquid；
(6) pectase that addition accounts for that the percent by volume of beet red pigment fermentation liquid is 0.02% ferments to beet red pigment
Liquid handle except glue；
(7) clarifying treatment is carried out to beet red pigment fermentation liquid using one of pectase, tanning solution, diatomite
1h；Pectase, tannin, diatomite additive amount when being respectively 10mg/L, 50mg/L, 300mg/L, light transmittance is in clarifying agent of the same race
Middle maximum, and the tanning solution light transmittance that 50mg/L is added reaches 69.4%, clarifying effect becomes apparent from；
(8) setting vacuum degree is 0.04MPa, is arranged 50 DEG C of thickening temperature, 200ml pigment leaching liquor is concentrated into 10ml,
It is freeze-dried into beet red pigment powder.
The calculating of recovery rate
Recovery rate (%)=beet red pigment quality/red beet powder quality * 100%=9.6%.
Embodiment 2
(1) fresh red beet is taken, cleans, block is cut into after peeling, the red beet block for getting colors bright-coloured is wiped into diameter 4mm
Silk, spray concentration be 0.5% citric acid solution color protection, be put into drying box, weigh sample weight every 1h, until quality not
It reduces again, that is, is dried to and is completely dried, break into powdered sieving with food blender, obtain red beet powder；
(2) the red beet powder after sieving is added to the citrate buffer solution of pH=3, homogeneous by weight 1:1 ratio
3min is slightly considered with cloth bag, then is freeze-dried after being filtered with filter paper；
(3) the red beet powder for weighing 1.00g in step (2), is placed in a beaker, and 50ml is added and concentration is 0.4%
Citric acid solution, extraction temperature is 25 DEG C, extraction time 30min, at ultrasonic power 540w, is carried out to red beet powder
Pigment extraction, centrifugation take supernatant, obtain haematochrome leaching liquor；
(4) it configures activating solution: weighing a certain amount of dried yeast powder and be placed in 100m L beaker, dilute saccharomycete with distilled water
2% glucose solution is added to final concentration 1 × 10 in thallus6The bacteria suspension of cfu/m L activates in 38 DEG C of thermostat water baths
30min is bred with this for thallus culture；
(5) the beet red pigment leaching liquor of 100ml is added in 200ml conical flask, bottleneck is stoppered with tampon and is placed on shaking table
On, it ferments under the conditions of setting fermentation 4h, 25 DEG C of fermentation temperature, revolving speed 200rpm and inoculum concentration 4%, is centrifuged off bacterium
Body obtains beet red pigment fermentation liquid；
(6) pectase that addition accounts for that the percent by volume of beet red pigment fermentation liquid is 0.03% ferments to beet red pigment
Liquid handle except glue；
(7) clarifying treatment is carried out to beet red pigment fermentation liquid using one of pectase, tanning solution, diatomite
1h；Pectase, tannin, diatomite additive amount when being respectively 10mg/L, 50mg/L, 300mg/L, light transmittance is in clarifying agent of the same race
Middle maximum, and the tanning solution light transmittance that 50mg/L is added reaches 69.4%, clarifying effect becomes apparent from, therefore the list of 50mg/L is added
Peaceful solution；
(8) setting vacuum degree is 0.04MPa, is arranged 55 DEG C of thickening temperature, 200ml pigment leaching liquor is concentrated into 10ml,
It is freeze-dried into beet red pigment powder.
The calculating of recovery rate
Recovery rate (%)=beet red pigment quality/red beet powder quality * 100%=18.2%.
Embodiment 3
(1) fresh red beet is taken, cleans, block is cut into after peeling, the red beet block for getting colors bright-coloured is wiped into diameter 4mm
Silk, spray concentration be 0.5% citric acid solution color protection, be put into drying box, weigh sample weight every 1h, until quality not
It reduces again, that is, is dried to and is completely dried, break into powdered sieving with food blender, obtain red beet powder；
(2) the red beet powder after sieving is added to the citrate buffer solution of pH=3, homogeneous by weight 1:1 ratio
3min is slightly considered with cloth bag, then is freeze-dried after being filtered with filter paper；
(3) the red beet powder for weighing 1.00g in step (2), is placed in a beaker, and 50ml is added and concentration is 0.4%
Citric acid solution, extraction temperature is 30 DEG C, extraction time 35min, at ultrasonic power 600w, is carried out to red beet powder
Pigment extraction, centrifugation take supernatant, obtain haematochrome leaching liquor；
(4) it configures activating solution: weighing a certain amount of dried yeast powder and be placed in 100m L beaker, dilute saccharomycete with distilled water
2% glucose solution is added to final concentration 1 × 10 in thallus6The bacteria suspension of cfu/m L activates in 38 DEG C of thermostat water baths
30min is bred with this for thallus culture；
(5) the beet red pigment leaching liquor of 100ml is added in 200ml conical flask, bottleneck is stoppered with tampon and is placed on shaking table
On, it ferments under the conditions of setting fermentation 4h, 30 DEG C of fermentation temperature, revolving speed 250rpm and inoculum concentration 4%, is centrifuged off bacterium
Body obtains beet red pigment fermentation liquid；
(6) pectase that addition accounts for that the percent by volume of beet red pigment fermentation liquid is 0.04% ferments to beet red pigment
Liquid handle except glue；
(7) clarifying treatment is carried out to beet red pigment fermentation liquid using one of pectase, tanning solution, diatomite
1h；Pectase, tannin, diatomite additive amount when being respectively 10mg/L, 50mg/L, 300mg/L, light transmittance is in clarifying agent of the same race
Middle maximum, and the tanning solution light transmittance that 50mg/L is added reaches 69.4%, clarifying effect becomes apparent from, therefore the list of 50mg/L is added
Peaceful solution；
(8) setting vacuum degree is 0.04MPa, is arranged 60 DEG C of thickening temperature, 200ml pigment leaching liquor is concentrated into 10ml,
It is freeze-dried into beet red pigment powder.
Recovery rate (%)=beet red pigment quality/red beet powder quality * 100%=11.2%.
Summary, ultrasonic wave extraction of the invention can shorten the broken time, accelerate broken speed, shorten extraction time, mention
High extraction, recovery rate can reach 18.2%.
The limitation that technical solution of the present invention is not limited to the above specific embodiments, it is all to do according to the technique and scheme of the present invention
Technology deformation out, falls within the scope of protection of the present invention.
Claims (8)
1. a kind of method of ultrasound assisted extraction beet red pigment, which comprises the following steps:
(1) fresh red beet is taken, cleans, block is cut into after peeling, the red beet block for getting colors bright-coloured is wiped into silk, and concentration is sprayed
For 0.5% citric acid solution color protection, it is put into drying box, weighs sample weight every 1h, until quality is no longer reduced, that is, is dried to
It is completely dried, breaks into powdered sieving with food blender, obtain red beet powder；
(2) the red beet powder after sieving is added to the citrate buffer solution of pH=3 by weight 1:1 ratio, homogeneous 3min is used
Cloth bag is slightly considered, then is freeze-dried after being filtered with filter paper；
(3) the red beet powder for weighing 1.00g in step (2), is placed in a beaker, and 50ml and concentration is added as 0.4% lemon
Acid solution, extraction temperature is 20-30 DEG C, extraction time 25-35min, at ultrasonic power 480-600w, to red beet powder
End carries out pigment extraction, and centrifugation takes supernatant, obtains haematochrome leaching liquor；
(4) it configures activating solution: weighing a certain amount of dried yeast powder and be placed in 100mL beaker, dilute saccharomycete thallus with distilled water,
2% glucose solution is added to final concentration 1 × 106The bacteria suspension of cfu/mL activates 30min in 38 DEG C of thermostat water baths,
It is bred with this for thallus culture；
(5) the beet red pigment leaching liquor of 100ml being added in 200ml conical flask, bottleneck is stoppered with tampon and is placed on shaking table, if
Surely it ferments under the conditions of fermentation 1-4h, 20-30 DEG C of fermentation temperature, revolving speed 100-250rpm and inoculum concentration 3-4%, centrifugation removes
Thallus is removed, beet red pigment fermentation liquid is obtained；
(6) addition accounts for the pectase that the percent by volume of beet red pigment fermentation liquid is 0.02-0.04% and sends out beet red pigment
Zymotic fluid handle except glue；
(7) clarifying treatment 1h is carried out to beet red pigment fermentation liquid using one of pectase, tanning solution, diatomite；
(8) setting vacuum degree is 0.04MPa, is arranged 50-60 DEG C of thickening temperature, 200ml pigment leaching liquor is concentrated into 10ml, cold
Jelly is dried to beet red pigment powder.
2. the method for ultrasound assisted extraction beet red pigment according to claim 1, it is characterised in that: the step (1)
Middle red beet block wipes the silk at diameter 4mm.
3. the method for ultrasound assisted extraction beet red pigment according to claim 1, it is characterised in that: the step (2)
The concentration of middle citric acid is 0.5%.
4. the method for ultrasound assisted extraction beet red pigment according to claim 1, it is characterised in that: the step (3)
25 DEG C of middle extraction temperature, extraction time 30min, ultrasonic power 540w.
5. the method for ultrasound assisted extraction beet red pigment according to claim 1, it is characterised in that: the step (5)
Middle shaking speed 250rpm, 25 DEG C of fermentation temperature, fermentation time 4h, inoculum concentration 4%.
6. the method for ultrasound assisted extraction beet red pigment according to claim 1, it is characterised in that: the step (6)
Middle pectase content 0.03%.
7. the method for ultrasound assisted extraction beet red pigment according to claim 1, it is characterised in that: the step (7)
In clarifying agent be tanning solution, the additive amount of tanning solution is 50mg/L in the beet red pigment fermentation liquid.
8. the method for ultrasound assisted extraction beet red pigment according to claim 1, it is characterised in that: the step (8)
55 DEG C of middle thickening temperature.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110973456A (en) * | 2019-12-26 | 2020-04-10 | 北部湾大学 | Preparation method and application of saffron extract colorant and beetroot extract colorant |
| CN114836055A (en) * | 2022-03-30 | 2022-08-02 | 新疆绿原糖业有限公司 | Method for extracting beet pigment from beet root |
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| CN1191877A (en) * | 1997-02-27 | 1998-09-02 | 吉林省农业科学院原子能利用研究所 | Preparation of betanin pigment |
| CN101507741A (en) * | 2009-03-28 | 2009-08-19 | 雒秋江 | Red beet extract and composite and preparation method and use thereof in preparing medicine for restraining tumor growth |
| CN107594472A (en) * | 2017-10-30 | 2018-01-19 | 潍坊友容实业有限公司 | A kind of Suaeda salsa biogenic salt and Betacyanins combined extraction method |
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| CN1191877A (en) * | 1997-02-27 | 1998-09-02 | 吉林省农业科学院原子能利用研究所 | Preparation of betanin pigment |
| CN101507741A (en) * | 2009-03-28 | 2009-08-19 | 雒秋江 | Red beet extract and composite and preparation method and use thereof in preparing medicine for restraining tumor growth |
| CN107594472A (en) * | 2017-10-30 | 2018-01-19 | 潍坊友容实业有限公司 | A kind of Suaeda salsa biogenic salt and Betacyanins combined extraction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110973456A (en) * | 2019-12-26 | 2020-04-10 | 北部湾大学 | Preparation method and application of saffron extract colorant and beetroot extract colorant |
| CN114836055A (en) * | 2022-03-30 | 2022-08-02 | 新疆绿原糖业有限公司 | Method for extracting beet pigment from beet root |
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