CN1075518C - Prepn. method of quality pectin of china grass - Google Patents
Prepn. method of quality pectin of china grass Download PDFInfo
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- CN1075518C CN1075518C CN98113343A CN98113343A CN1075518C CN 1075518 C CN1075518 C CN 1075518C CN 98113343 A CN98113343 A CN 98113343A CN 98113343 A CN98113343 A CN 98113343A CN 1075518 C CN1075518 C CN 1075518C
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- pectin
- ramie
- exchange resin
- extracting
- concentration
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Abstract
The present invention relates to a method for extracting pectin from ramie. After original ramie is washed and soaked by water and impurities are extracted and removed from the ramie in boiling water, the water solution of ammonium oxalate is used for extracting the pectin. The extract solution is processed through activated carbon discoloring, cation and anion exchange resin treatment, decompression, concentration, alcohol sedimentation or spray-drying, etc., and thus, the pure ramie pectin is obtained. The method can be combined with ramie degumming technologies for recovering the high-quality ramie pectin and reducing the environment pollution caused by degumming.
Description
The present invention is a kind of method of extracting high-quality pectin from ramie.
Ramie is a special product of China, produces more than 100,000 ton of raw ramie now, accounts for world wide production more than 80%.Raw ramie also has concomitant products such as pectin and hemicellulose except that Mierocrystalline cellulose, wherein pectin accounts for 6～8%, is an important polysaccharide leaved for development source.Yet in the existing China grass degumming process, these polysaccharide are present in the waste liquid, are discharged into rivers, lake, have both wasted resource, cause the severe contamination of environment again.In China, the annual pectin of losing from the China grass degumming process reaches more than 6 kilotons, and it overbalances 6.6 hundred million yuan.How research extracts it in the China grass degumming process, is used, and meaning is very great.
Ramie is a special product of China, and countries in the world are few to its research, and we once did some research to chemical constitution, the chemical structure of non-cellulosic polysaccharides such as ramie pectin, saw CA. (125) 145390m, and other does not appear in the newspapers.
The invention provides a kind ofly, extract the method for high-quality ramie pectin in conjunction with china grass degumming process.
Task of the present invention realizes by following technology.
Earlier with the raw ramie cold water washing, remove silt, pollutents such as dust are used cold water soak again, and the boiling water extracting is to remove dissolved organic matter such as water-soluble polysaccharide.
The ammonium oxalate aqueous solution with 0.4～0.6% except that the ramie of water-soluble substances, obtains the ramie pectin extract 80～100 ℃ of extractings.Add gac in the ramie pectin extract, stir, filter, or directly liquid pectin is passed through active carbon adsorption column, the liquid pectin that must decolour again through one of following Several Methods, can obtain dried commodity high-quality ramie pectin powder.
(a) liquid pectin is through H
+Type highly acidic cation and weakly alkaline or the desalination of strongly basic anion exchange resin post and decolouring more then are evaporated to 10～35% concentration of pectin, spraying drying.
(b) liquid pectin is evaporated to 10～35% concentration of pectin, the alcohol precipitation with 95% refilters or centrifugation, and the alcohol washing is dry below 70 ℃, pulverizes then, sieves.
(c) liquid pectin is through H
+Behind type highly acidic cation and the basic anion exchange resin post, by method (b), must do the ramie pectin powder again.
Collect above-mentioned (b) or (c) gained precipitated pectin mother liquor and washing lotion, recovery of alcohol distillation.
Enforcement of the present invention not only can obtain high-quality pectin from ramie, also will alleviate the severe contamination of China grass degumming to environment, and it is applied, and tangible economic benefit and social benefit will be arranged.
Embodiment 1:(1) Lu Zhuqing kind raw ramie 2Kg with cold water flush away silt and other pollutent, used the 20Kg cold water soak 42 hours then, took out, and refluxed 3.5 hours with the 18Kg water boil again, used cold water washing at last.(2) with the ammonium oxalate aqueous solution of 18Kg0.5%, 100 ℃ of extractings (1) gained ramie 3 hours, pectin extract.(3) add the 100g gac in above-mentioned gained liquid pectin, stirred 30 minutes, filter, liquid pectin must decolour.(4) (3) gained liquid pectin is successively passed through internal diameter 3cm, the H of virtual height 60cm
+Type highly acidic cation and weak base anion-exchange resin post.(5) with (4) gained liquid pectin vapourisation under reduced pressure to 600ml, spraying drying then, purity 98.5% dry fruit rubber powder 95.4g.
Embodiment 2:(1) gets the white kind raw ramie of Da Ye 3Kg,, refluxed 220 minutes with the 25Kg water boil then, use cold water washing after the taking-up with using 28Kg cold water soak 45 hours behind the cold water washing.(2) the ammonium oxalate aqueous solution that (1) gained ramie is used 26Kg0.55% filters 95～100 ℃ of extractings 200 minutes, gets pectin extract.(3) (2) gained extract is passed through internal diameter 2.5cm, virtual height is the active carbon adsorption column of 60cm, and the effluent liquid reduction vaporization adds 2800ml 95% alcohol precipitation pectin to 700ml.(4) mother liquor of elimination precipitated pectin, the alcohol washing precipitation pectin of usefulness 500ml 95% 2 times is then in oven dry below 70 ℃.(5) (4) gained dry fruit rubber powder is broken, cross 60 mesh sieves, get the pectin powder 160.5g of purity 98.2%.(6) the mother liquid obtained and washing lotion distillation with (4) gets 95% alcohol 2500ml.
Claims (3)
1. method of from ramie, extracting pectin, comprise raw ramie cold water washing, immersion, the boiling water extrct soluble substance that anhydrates, be that the ammonium oxalate aqueous solution of 0.4～0.6% (weight) is in 80～100 ℃ of following extracting pectin with concentration again, it is characterized in that extracting gained pectin solution through activated carbon decolorizing, successively by positively charged ion and anion exchange process, concentrating under reduced pressure, alcohol precipitation or spraying drying obtain ramie pectin.
2. method according to claim 1 is characterized in that the liquid pectin behind the activated carbon decolorizing can obtain the dry fruit rubber powder through following method:
(a) successively by after the cationic, anionic exchange resin processing, be evaporated to 10～35% (weight) concentration of pectin, spraying drying;
(b) successively handle by cationic, anionic exchange resin after, be evaporated to 10～35% (weight) concentration of pectin again after, with the alcohol precipitation of 95% (volume), refilter or centrifugation, the alcohol washing, drying is pulverized, and gets pectin powder.
3. method according to claim 1 and 2, the Zeo-karb that it is characterized in that handling pectin is H
+Type storng-acid cation exchange resin, anionite-exchange resin are weakly alkaline or strongly basic anion exchange resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113343A CN1075518C (en) | 1998-09-14 | 1998-09-14 | Prepn. method of quality pectin of china grass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113343A CN1075518C (en) | 1998-09-14 | 1998-09-14 | Prepn. method of quality pectin of china grass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1213666A CN1213666A (en) | 1999-04-14 |
| CN1075518C true CN1075518C (en) | 2001-11-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113343A Expired - Fee Related CN1075518C (en) | 1998-09-14 | 1998-09-14 | Prepn. method of quality pectin of china grass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1075518C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301651B (en) * | 2013-05-31 | 2015-10-28 | 安徽友勇生物科技有限公司 | Discoloration method in a kind of starch sugar production |
| CN106832051A (en) * | 2017-03-16 | 2017-06-13 | 中国农业科学院麻类研究所 | A kind of preparation method of Chinese fiber crops pectin and the new Chinese fiber crops jelly powder prepared according to the method |
| CN108727513A (en) * | 2018-08-20 | 2018-11-02 | 江西省峯野生物科技有限公司 | A kind of extracting method of fibre of flax for textile material glue |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094402A (en) * | 1983-10-28 | 1985-05-27 | Mitsubishi Acetate Co Ltd | Purification of pectin |
| CN86108835A (en) * | 1985-12-27 | 1987-07-01 | Tdk株式会社 | Spray drying process and device thereof |
| CN1034659A (en) * | 1987-12-31 | 1989-08-16 | 云南省轻工业科学研究所 | From papaya, extract edible pectin |
| CN1038044A (en) * | 1988-01-22 | 1989-12-20 | 沃尔克-哈格公司 | Make the method and apparatus of magnetic-disc |
| CN1008835B (en) * | 1985-11-09 | 1990-07-18 | 邓君华 | Method of phase-opening time counting and its equipments |
| CN1010395B (en) * | 1987-04-24 | 1990-11-14 | 菲利浦光灯制造公司 | Dry-shaving apparatus comprising slidable shutter |
| JPH03149201A (en) * | 1989-11-02 | 1991-06-25 | Atsushi Imai | Production of pectin |
| JPH089921A (en) * | 1994-06-30 | 1996-01-16 | Sanei Gen F F I Inc | Coloring of food |
-
1998
- 1998-09-14 CN CN98113343A patent/CN1075518C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094402A (en) * | 1983-10-28 | 1985-05-27 | Mitsubishi Acetate Co Ltd | Purification of pectin |
| CN1008835B (en) * | 1985-11-09 | 1990-07-18 | 邓君华 | Method of phase-opening time counting and its equipments |
| CN86108835A (en) * | 1985-12-27 | 1987-07-01 | Tdk株式会社 | Spray drying process and device thereof |
| CN1010395B (en) * | 1987-04-24 | 1990-11-14 | 菲利浦光灯制造公司 | Dry-shaving apparatus comprising slidable shutter |
| CN1034659A (en) * | 1987-12-31 | 1989-08-16 | 云南省轻工业科学研究所 | From papaya, extract edible pectin |
| CN1038044A (en) * | 1988-01-22 | 1989-12-20 | 沃尔克-哈格公司 | Make the method and apparatus of magnetic-disc |
| JPH03149201A (en) * | 1989-11-02 | 1991-06-25 | Atsushi Imai | Production of pectin |
| JPH089921A (en) * | 1994-06-30 | 1996-01-16 | Sanei Gen F F I Inc | Coloring of food |
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| Publication number | Publication date |
|---|---|
| CN1213666A (en) | 1999-04-14 |
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