CN100390237C - Chestnut shell natural brown pigment extraction method - Google Patents
Chestnut shell natural brown pigment extraction method Download PDFInfo
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- CN100390237C CN100390237C CNB031337309A CN03133730A CN100390237C CN 100390237 C CN100390237 C CN 100390237C CN B031337309 A CNB031337309 A CN B031337309A CN 03133730 A CN03133730 A CN 03133730A CN 100390237 C CN100390237 C CN 100390237C
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- chestnut shell
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Abstract
The present invention relates to natural edible pigment on a food additive, particularly to a chestnut shell natural brown pigment extraction method which comprises the following steps: crude extracts of the chestnut shell brown pigment is refined by aqueous alcohol solution, stand and are filtered, and the volume concentration of the alcohol is from 65% to 75% in the refining course; sediments are directly dried or are dissolved in water, and then a spray-drying procedure is carried out. Thereby, a pigment I refined product is obtained; the alcohol is recovered from the filter liquor, and the aqueous solution is evaporated to dryness or the spray-drying procedure is carried out on the aqueous solution. Thereby, a pigment II refined product is obtained. The present invention has the advantages of high color scale of the finished product, simple technology, low cost, good production quality and high stability and can be popularized into the extensive commercial process. Waste chestnut shells after Chinese chestnuts are processed are changed into valuable, which opens up a new natural brown pigment resource for the development of food industry.
Description
Technical field
The present invention relates to the natural food colour in the foodstuff additive, specifically a kind of extracting method of Brown Pigment in Chestnut Shells.
Background technology
Food colorant is one of important batching in the processed food, and it comprises synthetic food colors and natural food colour two parts.Though chemosynthesis food dye is bright in colour, good stability, most synthetic food colors are unfavorable to human body health, and some also has carcinogenesis, and therefore, synthetic colour is fewer and feweri as the consumption of foodstuff additive, even the use that is under an embargo; So each state is all in the research and development of actively being devoted to the natural plant pigment, natural pigment has no side effect because of it has as foodstuff additive, and human body is had certain health care dietary function, and advantage such as with low cost, enjoys people's favor.So the natural food colour resource that searching and exploitation have no side effect especially has the natural food colour resource of certain curative effect of medication and health-care effect, has more important economic benefit and social benefit.
In numerous natural pigments, brown pigments occupies very consequence in food color.The brown black and white series that on color, belongs to, though it is not bright-coloured, but in food color, be widely used, and its usage quantity in food is very big, but of less types, common have caramel, cacao color etc., and the brown pigments that contains in the chestnut shell pigment is a kind of good stability, do not have the natural pigment of toxic side effect, can be used as foodstuff additive.Chinese chestnut (Castanea mollssima) belongs to Fagaceae (Fagaceae), abounds with in China, and be the nut that people like food.China have every year a large amount of Chinese chestnuts be processed into various products (as; Chinese chestnut can, Chinese chestnut are done, Chinese chestnut paste etc.) sell, the chestnut shell that abandons thus is countless, the end adds utilization, very unfortunate, for making the tankage～chestnut shell resource utilization after Chinese chestnut is processed, making it turns waste into wealth, and extracts natural brown pigment wherein, for a kind of new natural brown pigment resource has been opened up in the development of foodstuffs industry again.Universities and colleges of domestic a few family are all in the research work of being engaged in this respect extraction and performance in succession at present.Pay attention to the research of chestnut shell pigment performance and extraction process aspect more in the existing literature, be not generalized in the large-scale suitability for industrialized production and go, its weak point is: 1) for improving yield, extraction agent adopts industry more or analyzes and use highly basic, needs subsequent disposal; Have a spot of insolubles to occur when 2) in water, dissolving after the unpurified crude extract drying, and its look valency is lower; 3) refining employing (resin) absorption method that has is carried out, its complex process, and the cost height, and on industrial production, be difficult to promote.
Summary of the invention
The object of the present invention is to provide the extracting method of the Brown Pigment in Chestnut Shells that a kind of technology is simple, cost is low, finished product look valency is high.
To achieve these goals, the technical solution used in the present invention is:
Adopt the alcoholic acid aqueous solution to make with extra care the crude extract of chestnut shell brown pigment, treating process alcoholic acid volumetric concentration is 65～75%, leaves standstill, filters; With the throw out convection drying or change water-soluble spraying drying, obtain pigment I highly finished product; Filtrate recycling ethanol with aqueous solution evaporate to dryness or spraying drying, obtains pigment II highly finished product.
Described crude extract is vat liquor, concentrated solution or the dry powder of chestnut shell brown pigment; The time of leaving standstill was at least 0.5 hour, was generally 1～3 hour.
The leaching process of described crude extract is the chestnut shell powder that will pulverize with 5～10 times weight concentration 0.01～0.08% alkaline solution lixiviate, and 85～95 ℃ are reacted 1～3 hour after-filtration; Filter residue can merge vat liquor twice again with 3～8 times solution lixiviate, and dry then, grinding promptly gets chestnut shell brown pigment and slightly carries product.
The alkali that is adopted is preferably edible sodium hydroxide, yellow soda ash or sodium bicarbonate.
The present invention has following advantage:
1. finished product look valency height.Two portions brown pigments product look valency that obtains after the present invention is refining is all more than 20; This pigment solubleness in water is good, do not have insolubles to exist, and its colour-change is little between PH4～14.
2. technology is simple, cost is low.The present invention adopts (eating) alcoholic acid aqueous solution to make with extra care, and extracting solution is an edible alkali, mild condition.
3. good product quality, good stability.Select the edible alkali and the edible ethanol of edibility in the leaching process for use, prepared natural brown pigment safety non-toxic to not injury of human body, can be used for beverage, cold food, cake in the pH value environment widely, and it is painted in bakery product to suit especially.
4. extend in the large-scale suitability for industrialized production and go.The chestnut shell pigment has certain bacteriostatic action, and intestinal bacteria, dysentery bacterium and Penicillium notatum are all had killing action, compares with similar medicine, has more significant curative effect; The chestnut shell pigment has certain resistance of oxidation, has higher thermostability simultaneously; And photostabilization is good, and this is that other natural pigments are not available, is applied to food and more can demonstrates unique advantages; Chestnut shell is that the waste source is very extensive, and easily storage, extracts natural brown pigment with it, is the good project of shaking off poverty and setting out on the road to prosperity in all chestnut shell producing regions; The present invention makes changing rejected material to useful resource, for a kind of new natural brown pigment resource that has no side effect is opened up in the development of foodstuffs industry again.
Embodiment
Embodiment 1
1) with the chestnut shell powder pulverized soaking in sodium carbonate solution with 5 times 0.05%, make it fully wetting after, be placed in 85 ℃ the water-bath and heat 1.2 hours after-filtration; Filter residue is used 8 times sodium carbonate solution lixiviate again, merges vat liquor twice, and dry then, grinding promptly gets chestnut shell brown pigment and slightly carries product, and yield is 10%; Look valency before refining is 10.
2) be extracted on the product basis at alkaline solution, adopt the alcoholic acid aqueous solution to make with extra care, specifically be to add 2.5 times of amounts (95%) ethanol liquid after extraction filtrate is concentrated to small volume, the alcoholic acid volumetric concentration is 67.8%, after have throw out to separate out, after static 2 hours, filter, throw out convection drying after the filter obtains pigment I highly finished product; Filtrate recycling ethanol with aqueous solution evaporate to dryness or spraying drying, obtains pigment II highly finished product; Its look valency of two portions brown pigments elaboration that obtains is all at 15--20.
Get this pigment (I and/or II) 0.5g as iced black tea beverage 2000ml, its limpid in sight transparent, free from extraneous odour.
Embodiment 2
1) the chestnut shell powder the pulverized sodium hydrogen carbonate solution with 10 times 0.08% is soaked, make it fully wetting after, be placed in 95 ℃ the water-bath and heat 3 hours after-filtration; Filter residue is used 5 times sodium hydrogen carbonate solution lixiviate again, merges vat liquor twice, and is dry then, grinds and promptly gets the chestnut shell brown pigment raw product, and yield is 6%; Look valency before refining is 10.
2) be extracted on the product basis at alkaline solution, adopt the alcoholic acid aqueous solution to make with extra care, specifically be to add 3 times of amounts (95%) ethanol liquid after extraction filtrate is concentrated to small volume, the alcoholic acid volumetric concentration is 71.3%, after have throw out to separate out, after static 3 hours, filter, throw out convection drying after the filter or change water-soluble spraying drying obtains pigment I highly finished product; Filtrate recycling ethanol with aqueous solution evaporate to dryness or spraying drying, obtains pigment II highly finished product; Its look valency of two portions brown pigments elaboration that obtains is all at 15--20.
Get this pigment (I and/or II) 10g as cola beverages 3000ml, its color and luster is identical with cola beverages, does not have precipitation, free from extraneous odour.
Embodiment 3
1) the chestnut shell powder the pulverized sodium hydroxide solution with 6 times 0.05% is soaked, make it fully wetting after, be placed in 90 ℃ the water-bath and heat 2.5 hours after-filtration; Filter residue is used 5 times sodium hydroxide solution lixiviate again, merges vat liquor twice, and is dry then, grinds and promptly gets the chestnut shell brown pigment raw product, and yield is 12%; Look valency before refining is 10.
2) be extracted on the product basis at alkaline solution, adopt the alcoholic acid aqueous solution to make with extra care, specifically be to add 3 times of amounts (95%) ethanol liquid after extraction filtrate is concentrated to small volume, the alcoholic acid volumetric concentration is 71.3%, after have throw out to separate out, after static 2.5 hours, filter, throw out convection drying after the filter or change water-soluble spraying drying obtains pigment I highly finished product; Filtrate recycling ethanol with aqueous solution evaporate to dryness or spraying drying, obtains pigment II highly finished product; Its look valency of two portions brown pigments highly finished product that obtains is all more than 17-20.
Claims (3)
1. the extracting method of a Brown Pigment in Chestnut Shells is characterized in that: adopt the alcoholic acid aqueous solution to make with extra care the crude extract of chestnut shell brown pigment, treating process alcoholic acid volumetric concentration is 65～75%, leaves standstill, filters; With the throw out convection drying or change water-soluble spraying drying, obtain pigment I highly finished product; Filtrate recycling ethanol with aqueous solution evaporate to dryness or spraying drying, obtains pigment II highly finished product; The leaching process of described crude extract is the chestnut shell powder that will pulverize with 5～10 times weight concentration 0.01～0.1% alkaline solution lixiviate, 1～3 hour after-filtration of 85～95 ℃ of hot dippings; Filter residue can merge vat liquor twice again with 3～8 times solution lixiviate, and dry then, grinding promptly gets chestnut shell brown pigment and slightly carries product; Described alkali is edible sodium hydroxide, yellow soda ash or sodium bicarbonate; Described ethanol finishing agent is an edible ethanol.
2. according to the extracting method of the described Brown Pigment in Chestnut Shells of claim 1, it is characterized in that: described crude extract is vat liquor, concentrated solution or the dry powder of chestnut shell brown pigment.
3. according to the extracting method of the described Brown Pigment in Chestnut Shells of claim 1, it is characterized in that: the described time of leaving standstill was at least 0.5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031337309A CN100390237C (en) | 2003-07-16 | 2003-07-16 | Chestnut shell natural brown pigment extraction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031337309A CN100390237C (en) | 2003-07-16 | 2003-07-16 | Chestnut shell natural brown pigment extraction method |
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| CN1569970A CN1569970A (en) | 2005-01-26 |
| CN100390237C true CN100390237C (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031337309A Expired - Fee Related CN100390237C (en) | 2003-07-16 | 2003-07-16 | Chestnut shell natural brown pigment extraction method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115611B (en) * | 2010-01-04 | 2013-07-10 | 中国科学院过程工程研究所 | Method for performing steam explosion on chestnut hulls and coproducing pigment, tanning extract and active carbon |
| CN102757663B (en) * | 2011-04-26 | 2013-11-27 | 中国科学院沈阳应用生态研究所 | Chestnut shell pigment grading method |
| CN102876070A (en) * | 2012-06-19 | 2013-01-16 | 湖北紫鑫生物科技有限公司 | Method for extracting brown pigment of chestnut shells by using ultrasonic waves |
| CN102995462A (en) * | 2012-12-25 | 2013-03-27 | 常州大学 | Natural antibacterial coloured fabric and preparation method thereof |
| CN103232725B (en) * | 2013-04-24 | 2014-03-12 | 湖北紫鑫生物科技有限公司 | High-stability chestnut shell brown pigment as well as refining method and application thereof |
| CN107652709A (en) * | 2017-11-01 | 2018-02-02 | 李斌 | A kind of Preparation method and use of chestnut bud brown pigment |
| NL2022270B1 (en) * | 2018-12-20 | 2020-07-15 | Sanluc Int Nv | Coloring additive |
| CN113527905B (en) * | 2021-06-24 | 2022-07-29 | 华中农业大学 | Method for extracting chestnut shell brown pigment from chestnut shells and application of chestnut shells brown pigment in hair dye |
-
2003
- 2003-07-16 CN CNB031337309A patent/CN100390237C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 板栗壳棕色素的提取及理化性质研究. 段蕊，张俊杰.淮海工学院学报（自然科学版）. 1998 |
| 板栗壳棕色素的提取及理化性质研究. 段蕊，张俊杰.淮海工学院学报（自然科学版）. 1998 * |
| 板栗壳棕色素的提取工艺研究及性能初探. 段蕊，张俊杰.食品与机械，第2期. 2001 |
| 板栗壳棕色素的提取工艺研究及性能初探. 段蕊，张俊杰.食品与机械，第2期. 2001 * |
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| CN1569970A (en) | 2005-01-26 |
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