CN103467619A - Method for decoloring pectin - Google Patents
Method for decoloring pectin Download PDFInfo
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- CN103467619A CN103467619A CN2013104399092A CN201310439909A CN103467619A CN 103467619 A CN103467619 A CN 103467619A CN 2013104399092 A CN2013104399092 A CN 2013104399092A CN 201310439909 A CN201310439909 A CN 201310439909A CN 103467619 A CN103467619 A CN 103467619A
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- pectin
- chlorine dioxide
- decoloring
- normal temperature
- dioxide solid
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Abstract
The invention discloses a method for decoloring pectin. The method comprises the following steps: concentrating, carrying out alcohol precipitation and adding a chlorine dioxide solid with a material ratio of 0.2% in a rinsing process for a pectin liquid extracted from a raw material, wherein the chlorine dioxide solid does not need to be activated; carrying out reaction at normal temperature for 30-40 minutes; and filtering and drying to realize the purpose of decoloring the pectin. The method disclosed by the invention overcomes deficiencies in the prior art. By adding an appropriate amount of the chlorine dioxide solid in the rinsing process of pectin for reaction at normal temperature, pigment substances are permanently decolored by means of high oxidability of chlorine dioxide, so that the decoloring effect is good.
Description
Technical field
The present invention relates to the pectin decoloration processing technology field, specifically belong to a kind of method that pectin decoloration is processed.
Background technology
Pectin is a kind of wetting ability vegetable jelly, extensively be present in the cell walls of root, stem, leaf, fruit of higher plant, main component is galacturonic acid, pectin has good emulsifying, thickening, stable and pectisation, as far back as fields such as food, textile printing and dyeing tobacco, metallurgy, is widely used.Pectin, as water-soluble dietary fibre, more and more is subject to the attention of research and processing industry.Because the pectin that contains a large amount of pigments in plant tissue, extracts inevitably can be mixed with pigment, the cotton-shaped pectin substance particularly obtained after concentrated alcohol precipitation at the liquid pectin from extracting raw material, make pigment, wrap up and be adsorbed in cotton-shaped pectin, greatly affect the quality of pectin.Therefore, must be to the pectin processing of decolouring in pectin production process.Existing decolouring technology has: 1, activated carbon decolorizing is a kind of adsorption bleaching technology, is to utilize the pore structure of gac prosperity and huge specific surface area that the coloring matter in pectin solution is adsorbed.2, by precipitating, good pectin is put into pure ammonia solution, utilizes the solubleness of pectin in ethanol very little, and the ethanol of pure ammonia solution is by the pigment in pectin and impurity stripping and decolour.3, the hydrogen peroxide decoloring method is a kind of Chemical decolor method, is mainly to utilize the oxidative function of hydrogen peroxide that the chromophoric group of coloring matter in pectin is destroyed and discolors.This destruction is chemical reaction irreversibly, therefore after decolouring, can not return look.4, polymeric adsorbent is a kind of novel polymer parting material, a kind of decoloring method that utilizes the ion-exchange of resin or adsorption function that the pigment in solution or ion are removed.Its advantage is mainly that processing power is large, and the decolouring capacity is high, can remove various ion and pigment, can use by repeated regeneration, and long service life, application fee is lower.Active carbon adsorption technology due to the fine structure of gac, is difficult to gac and pectin are thoroughly separated in the subsequent separation process of pectin, and causing the pectin ash content to exceed standard affects the pectin quality.The hydrogen peroxide decolorizing effect is general, and country's " food hygiene law " has forbidden the technical grade hydrogen peroxide is added in the middle of food, macroporous resin is the novel high polymer parting material that development in recent years is got up, although the pectin quality after decolouring is higher, and resin is renewable, but there are complex process, loop cycle length, high in cost of production drawback.
Summary of the invention
The purpose of this invention is to provide a kind of method that pectin decoloration is processed, the deficiencies in the prior art have been overcome, employing is reacted adding in the pectin rinse cycle under appropriate chlorine dioxide solid normal temperature, utilizes the hyperoxia voltinism of the dioxide peroxide plain material of checking colors to carry out permanent fading, good decolorizing effect.
The technical solution used in the present invention is as follows:
A kind of method that pectin decoloration is processed, the liquid pectin that extracts from raw material through concentrated, alcohol precipitation, add the chlorine dioxide solid of material ratio 2 ‰ in rinse cycle, wherein chlorine dioxide solid, without activation, reacts 30-40 minute under normal temperature, and rear filtration, drying reach the purpose of pectin decoloration.
Compared with the prior art, beneficial effect of the present invention is as follows:
Decolorizing effect of the present invention significantly forever can react under colour-fast, normal temperature, does not simple to operately increase extra operation.
The accompanying drawing explanation
Fig. 1 is the pectin powder figure processed without decolouring;
The pectin powder figure of Fig. 2 for processing through the present invention.
Embodiment
Referring to accompanying drawing, get the pectin after concentrated alcohol precipitation, at rinse stage, add during the dioxide peroxide powder of liquid ratio 2 ‰ adds rinsing liquid in being dissolved in 5 times of water, react at normal temperatures after 30-40 minute filter, dry, sieving gets final product to obtain color finished product pectin preferably.
Claims (1)
1. the method that a pectin decoloration is processed, it is characterized in that: the method, the liquid pectin that extracts from raw material through concentrated, alcohol precipitation, add the chlorine dioxide solid of material ratio 2 ‰ in rinse cycle, reaction 30-40 minute under normal temperature, rear filtration, drying reach the purpose of pectin decoloration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104399092A CN103467619A (en) | 2013-09-23 | 2013-09-23 | Method for decoloring pectin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104399092A CN103467619A (en) | 2013-09-23 | 2013-09-23 | Method for decoloring pectin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103467619A true CN103467619A (en) | 2013-12-25 |
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| CN2013104399092A Pending CN103467619A (en) | 2013-09-23 | 2013-09-23 | Method for decoloring pectin |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB477600A (en) * | 1935-03-29 | 1937-12-30 | Arthur Buchting | Improvements in the production of pectin extracts |
| CN1072934A (en) * | 1992-09-23 | 1993-06-09 | 中国科学院黑龙江农业现代化研究所 | From the potato granulated slag, extract the method for low-ester pectin |
| CN101074270A (en) * | 2006-05-17 | 2007-11-21 | 烟台安德利果胶有限公司 | Production of polymer apple pectin |
| CN103232555A (en) * | 2013-05-16 | 2013-08-07 | 内江师范学院 | Method for extracting pectin from lemon peel residues by utilizing enzymatic method |
-
2013
- 2013-09-23 CN CN2013104399092A patent/CN103467619A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB477600A (en) * | 1935-03-29 | 1937-12-30 | Arthur Buchting | Improvements in the production of pectin extracts |
| CN1072934A (en) * | 1992-09-23 | 1993-06-09 | 中国科学院黑龙江农业现代化研究所 | From the potato granulated slag, extract the method for low-ester pectin |
| CN101074270A (en) * | 2006-05-17 | 2007-11-21 | 烟台安德利果胶有限公司 | Production of polymer apple pectin |
| CN103232555A (en) * | 2013-05-16 | 2013-08-07 | 内江师范学院 | Method for extracting pectin from lemon peel residues by utilizing enzymatic method |
Non-Patent Citations (2)
| Title |
|---|
| 左莹等: ""果胶脱色技术研究进展"", 《安徽农学通报》 * |
| 张亨等: ""化学脱色研究进展"", 《现代化工》 * |
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| PB01 | Publication | ||
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Application publication date: 20131225 |