CN1491578A - Carrot powder and its extract - Google Patents
Carrot powder and its extract Download PDFInfo
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- CN1491578A CN1491578A CNA021465444A CN02146544A CN1491578A CN 1491578 A CN1491578 A CN 1491578A CN A021465444 A CNA021465444 A CN A021465444A CN 02146544 A CN02146544 A CN 02146544A CN 1491578 A CN1491578 A CN 1491578A
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- carrot meal
- carrot
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Abstract
The present invention relates to carrot deeply processing technology. The carrot dregs after squeezing to produce carrot juice is dried and crushed into powder, from which beta-carotene, pectin and diet fiber are extracted. The present invention has the advantages of extracting several food additives with high economic value from the dregs.
Description
One, technical field: the invention belongs to a kind of carrot deep process technology, especially a kind of carrot meal and extract thereof.
Two, background technology: carrot is rich in and comprises multiple nutritional components, has significant health-care efficacy.The important antioxidants that the present medical circle in beta carotene city that wherein comprises is generally acknowledged, aspects such as disease such as prevention and treatment cancer have been begun to be applied in, give disclosed associated extraction and technology of preparing and have lower or the like the shortcoming of recovery rate, commercial Application is restricted; Suchlike situation is with the disclosed also objective reality of directly extracting from carrot in pectin and the dietary fibre technology.Meanwhile at present in the known technology deep process technology of carrot squeeze the juice comparatively ripe with the last stage, and industrial applications, and the slag charge after squeezing the juice generally is used as the waste discharge processing, the big and contaminated environment of waste, and wherein working substance content obviously surpasses the carrot raw material by analysis.
Its molecular formula of beta carotene is C
40H
56, molecular weight is 538.88, structural formula is:
Be purplish red or kermesinus crystal or crystalline powder, 183 ℃ of fusing points are soluble in carbon disulfide, benzene, chloroform, n-hexane, benzinum etc., water insoluble, methyl alcohol, ethanol, edible wet goods.It has maximum absorbance to oxygen, heat and photo-labile at 440-450nm.
All the time, beta carotene is having a wide range of applications aspect food additives, feed addictive, the auxiliary pharmaceutical adjuvant.In the recent period, along with the raising of living standards of the people, its medicines and health protection function is paid attention to by people gradually.Can treat the photosensitive disease of erythrohepatic protoporphyria, can be used as provitamin A as beta carotene, play vitamin A, can prevent and treat ND, can prevent and treat angiocardiopathy and health care and antidotal function are arranged by suppressing the free radical growth.American-European countries's these type of health products very in vogue, similar trend has also appearred in China coastal developed regions, and this will provide vast market prospect for the production of beta carotene.
Pectin is present in plant cell wall and cell internal layer, is the support substance of inner cell, is a saccharoidal general name.Pectin be white to khaki, little have special smelly, little sweet band acid of distinguishing the flavor of, no definite melting point and solubility, relative density is about 0.7, is dissolved in 20 times of water becoming viscous liquid, and litmus paper is acidity, is insoluble to ethanol and other organic solvents.Its major function has: have gelatification when making jam and preserved fruit, in acidic beverages protein is had stabilization, in catsup and sea urchin roe paste thickening power is arranged.
Dietary fiber is that a kind of mixture of complexity can think simply that it is " fully can not by the plant component that digestive enzyme digested ".Be divided into water-soluble dietary fiber (SDF) and water insoluble dietary fiber (IDF) two big classes according to its dissolution characteristics.Water insoluble dietary fiber is meant not by the human body alimentary canal enzymic digestion and is insoluble to that part of dietary fiber of hot water that it mainly is the constituent of cell membrane, comprises cellulose, lignin, shitosan and vegetable wax.
This shows that the slag charge after carrot is squeezed the juice carries out industrial utilization, to extracting beta carotene and dietary fiber, that extracts from raw material continuously even is necessary.
Three, summary of the invention: the objective of the invention is to propose a kind of slag charge after carrot is squeezed the juice and carry out industrial utilization, to extracting the technical scheme of beta carotene, pectin and dietary fiber, i.e. carrot meal and extract thereof.The objective of the invention is to carry out dry powder process by the slag charge after carrot is squeezed the juice, and further therefrom extract beta carotene, pectin and dietary fiber realize.
The invention has the advantages that, the development and utilization of the slag charge after carrot squeezed the juice, improved the economic worth of raw material, reduced waste discharge, prior being, the preparation of carrot meal not only provides a kind of new industry and civilian raw material, and from carrot meal, can extract the high and practical food additives matter of economic worths such as beta carotene, dietary fiber and pectin continuously, simple for process, the content of beta carotene in the carrot meal, the result is respectively 0.32mg/ml and 0.5mg/g, and recovery rate can reach 91%, and very high recovery rate is arranged; Pectin yield is 28.78%; The yield of hemicellulose A is 18.82%, and the yield of hemicellulose B is 0.54%.
Four, description of drawings:
Fig. 1 is that embodiment 3 usefulness benzinums are cooked extractant, in certain extraction time, finds out best extraction temperature experiment chart as a result.
Fig. 2 is Fig. 1 temperature curve
Fig. 3 is the content of cellulose graph of a relation of alkali charge and product among the embodiment 6
Fig. 4 is the extraction of embodiment 6 hemicelluloses and the graph of a relation of pH value
Fig. 5 is the yield of ethanol among the embodiment 8/hemicellulose B dietary fiber solution and hemicellulose A
Five, the specific embodiment:
Embodiment 1: the slag charge after carrot is squeezed the juice carries out dry powder process.Carrot is cleaned, and is that the vapor action 20-25 of 9-14bar remove the peel second at air pressure, fragmentation after 65-75 ℃ preheating 7-8 minute, after the slaking unexpectedly 6-8bar pressure squeeze out juice, make carrot meal after the slag charge drying pulverizing after squeezing the juice.
Embodiment 2: with the carrot meal is raw material, extracts natural beta-carotin with solvent extraction.Carrot meal filters through the extractant solvent extraction, and filtrate concentrates, and separates out pigment, and crude product obtains pure product natural beta-carotin after crossing chromatographic column.
Embodiment 3: embodiment 2 PetroChina Company Limited.'s ethers are the extractant solvent.Cook extractant with benzinum, in certain extraction time, find out best extraction temperature.
Can find out from experimental result chart and temperature curve,, when temperature is 60 ℃, reach maximum, begin then to descend along with the rising absorbance of temperature increases gradually.This be because beta carotene to thermally labile, temperature is too high can decompose.So 60 ℃ are the optimum extraction temperature.
Embodiment 4: among the embodiment 2, the extractant solvent is a benzinum, and extraction time is 70min, and extracting temperature is 60 ℃, and eluant, eluent is 90: 1 benzinum acetone.Accurately take by weighing the 35g carrot meal, extract in these process conditions next time, survey the content that extract reaches beta carotene in the same batch carrot meal with high performance liquid chromatography, the result is respectively 0.32mg/ml and 0.5mg/g.Because extract amounts to 50ml, recovery rate can reach 91%.
Embodiment 5: with carrot meal by wet-milling: the amount of water=1: 2 adds demineralized water, and the hydrochloric acid with 10% is transferred pH value to 1.4, sends into jacketed pan and is heated to 85-95 ℃, stirring reaction 90-120 minute.With extract while hot through 20 nylon filter cloth press filtration of μ m aperture or centrifugations, washing filter powder, refilter, merging filtrate is preserved the filter powder, adopt Rotary Evaporators, 40-50 ℃ of controlled pressure 0.1-0.3MPa control temperature is concentrated into 1/5, and the temperature of gained fructose concentrating liquid is dropped to room temperature, in closed container, under mechanical agitation, fructose concentrating liquid is injected 2.5 times of volume of ethanol with the multiply wire, with precipitation with alcohol carry pectin.Extract pectin with ethanol precipitation, gained pectin color nature, ash content is low, the pectin quality better, and also technology is simple, operation easily, and the yield of pectin increases with the increase of the amount of ethanol.Consider economy, it is good getting 2 times of volumes, and its yield only descends 2 percentage points than the yield of 3 times of volumes.
Embodiment 6: with prepared filter powder among the embodiment 5 with 10%NaOH in soaking at room temperature 20 hours.Filter with No. 240 nylon filter clothes, with soft water washing filter powder, wash 4-5 time, keep filtrate, filtrate being used to extracted hemicellulose.Continue again to wash to washing lotion and be neutral substantially, place thermostatic drying chamber dry in powder, keep temperature not to be higher than 70 ℃ with soft water.Gained filtrate is transferred pH value to 7 with hydrochloric acid, and centrifugal, residual powder is hemicellulose A.Centrifugate adds 3.5 times of ethanol, centrifugation again, and residual powder is a hemicellulose B.Centrifugate reclaims ethanol.
Adopt different alkali charges, the content of cellulose difference of product, employing 10%NaOH immersion products obtained therefrom content of cellulose is the highest and alkali charge is few, causes the product content of cellulose on the low side.But this can not influence its edibility, only can cause hemicellulose to fail to slough fully, and hemicellulose output descends, and reduces the output of soluble cellulose.
Hence one can see that, and the NaOH consumption increases can reduce the cellulose yield, and this is because NaOH concentration is low, and the hemicellulose of solubility is not removed fully, and cause cellulose output to increase, but influence hemicellulose output, therefore, with 10%NaOH solution the best.
The extraction and the pH value of hemicellulose have confidential relation, and hemicellulose is water soluble under highly basic, but along with pH value descends, the water-soluble decline of hemicellulose.
Hemicellulose easily precipitates under acid condition, but hemicellulose is used for food, and pH value can not be too low, and therefore, pH value is about 5 better.
Along with the increase of amount of alcohol, the hemicellulose yield constantly raises, and when the ethanol volume was its 3.5 times, it is maximum that yield reaches, and can determine the optimum addition of ethanol thus.
Embodiment 7: in embodiment 5, carrot meal: water is that PH is 1.4 in 1: 2 the solution, and 2 hours sedimentation times, with ethanol: solution=2: 1 adds ethanol.Extracting pectin by above technology, is raw material with the carrot meal, and pectin yield can be 28.78%.
Embodiment 8: in embodiment 6, the optimised process of hemicellulose A dietary fiber is that pH value is 5, leaves standstill the 40min centrifugation; The optimised process of hemicellulose B dietary fiber is: ethanol: solution=3.5: 1, leave standstill the 40min. centrifugation.Extracted by above technology, the yield of hemicellulose A is 18.82%, and the yield of hemicellulose B is 0.54%.
Claims (9)
1, a kind of carrot meal and extract thereof is characterized in that, the slag charge after carrot is squeezed the juice carries out dry powder process, and further therefrom extract beta carotene, pectin and dietary fiber.
2, carrot meal as claimed in claim 1 and extract thereof, it is characterized in that, carrot is cleaned, at air pressure is that the vapor action 20-25 of 9-14bar removes the peel second, fragmentation after 65-75 ℃ preheating 7-8 minute, finish 6-8bar pressure after the slaking and squeeze out juice, the slag charge drying after squeezing the juice is made carrot meal after pulverizing.
3, carrot meal as claimed in claim 1 and extract thereof is characterized in that, are raw material with the carrot meal, extract natural beta-carotin with solvent extraction.Carrot meal filters through the extractant solvent extraction, and filtrate concentrates, and separates out pigment, and crude product obtains pure product natural beta-carotin after crossing chromatographic column.
4, carrot meal as claimed in claim 3 and extract thereof is characterized in that, benzinum is the extractant solvent.
5, carrot meal as claimed in claim 3 and extract thereof is characterized in that, extraction time is 70min, and extracting temperature is 60 ℃, and eluant, eluent is 90: 1 benzinum acetone.
6, carrot meal as claimed in claim 1 and extract thereof is characterized in that, with carrot meal by wet-milling: the amount of water=1: 2 adds demineralized water, and the hydrochloric acid with 10% is transferred pH value to 1.4, sends into jacketed pan and is heated to 85-95 ℃, stirring reaction 90-120 minute.With extract while hot through 20 nylon filter cloth press filtration of μ m aperture or centrifugations, washing filter powder, refilter, merging filtrate is preserved the filter powder, adopt Rotary Evaporators, 40-50 ℃ of controlled pressure 0.1-0.3MPa control temperature is concentrated into 1/5, and the temperature of gained fructose concentrating liquid is dropped to room temperature, in closed container, under mechanical agitation, fructose concentrating liquid is injected 2.5 times of volume of ethanol with the multiply wire, with precipitation with alcohol carry pectin.
7, carrot meal as claimed in claim 6 and extract thereof is characterized in that, carrot meal: water is that PH is 1.4 in 1: 2 the solution, and 2 hours sedimentation times, with ethanol: solution=2: 1 adds ethanol.
8, carrot meal as claimed in claim 6 and extract thereof, it is characterized in that, prepared filter powder with 10%NaOH in soaking at room temperature 20 hours, filter with No. 240 nylon filter clothes, with soft water washing filter powder, wash 4-5 time, keep filtrate, filtrate being used to extracted hemicellulose, continue again to wash to washing lotion and be neutral substantially, place thermostatic drying chamber dry in powder, keep temperature not to be higher than 70 ℃ with soft water, gained filtrate is transferred pH value to 7 with hydrochloric acid, centrifugal, residual powder is hemicellulose A, and centrifugate adds 3.5 times of ethanol, centrifugation again, residual powder are hemicellulose B.
9, carrot meal as claimed in claim 6 and extract thereof, it is characterized in that the optimised process of hemicellulose A dietary fiber is that pH value is 5, leaves standstill the 40min centrifugation, the optimised process of hemicellulose B dietary fiber is: ethanol: solution=3.5: 1, leave standstill the 40min. centrifugation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021465444A CN1491578A (en) | 2002-10-21 | 2002-10-21 | Carrot powder and its extract |
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|---|---|---|---|
| CNA021465444A CN1491578A (en) | 2002-10-21 | 2002-10-21 | Carrot powder and its extract |
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| CN1491578A true CN1491578A (en) | 2004-04-28 |
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| CNA021465444A Pending CN1491578A (en) | 2002-10-21 | 2002-10-21 | Carrot powder and its extract |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327787C (en) * | 2004-10-28 | 2007-07-25 | 吉鹤立 | Method for preparing vegetable hydrate cellulose |
| CN101933582A (en) * | 2010-07-05 | 2011-01-05 | 连云港口福食品有限公司 | Carrot meal production process |
| WO2019005915A1 (en) * | 2017-06-27 | 2019-01-03 | Dupont Nutrition, Usa Inc. | Plant-derived colouring texturants |
-
2002
- 2002-10-21 CN CNA021465444A patent/CN1491578A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327787C (en) * | 2004-10-28 | 2007-07-25 | 吉鹤立 | Method for preparing vegetable hydrate cellulose |
| CN101933582A (en) * | 2010-07-05 | 2011-01-05 | 连云港口福食品有限公司 | Carrot meal production process |
| WO2019005915A1 (en) * | 2017-06-27 | 2019-01-03 | Dupont Nutrition, Usa Inc. | Plant-derived colouring texturants |
| CN111031804A (en) * | 2017-06-27 | 2020-04-17 | 杜邦营养美国公司 | Plant-derived coloring modifier |
| EP3644754A4 (en) * | 2017-06-27 | 2021-03-17 | DuPont Nutrition USA, Inc. | Plant-derived colouring texturants |
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