GB757463A - Process for the extraction of mannitol from seaweed - Google Patents
Process for the extraction of mannitol from seaweedInfo
- Publication number
- GB757463A GB757463A GB25416/54A GB2541654A GB757463A GB 757463 A GB757463 A GB 757463A GB 25416/54 A GB25416/54 A GB 25416/54A GB 2541654 A GB2541654 A GB 2541654A GB 757463 A GB757463 A GB 757463A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mannitol
- alkaline
- dialysis
- extracted
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/78—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by condensation or crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Health & Medical Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Mannitol is extracted from seaweed by dialysis of the juices extracted from the whole weed, or, alternatively, by dialysis of the juices during their extraction from the weeds using the membranes of the latter to effect the dialysis. The weed is steeped in fresh or slightly acidulated water and withdrawn as soon as the greater part of the mannitol and other crystalloid substances have passed into the water. Magnesium and calcium salts are then precipitated by adding an alkaline carbonate or an alkaline or alkaline-earth hydroxide. After filtering off the calcium and magnesium salts the ratio of the weight of mannitol to the total weight of alkaline chlorides in the solution is determined, and if the weights are approximately equal the liquid is evaporated and the mannitol separated by crystallization. If the weight of mannitol is less than that of the alkaline chlorides then pure mannitol is added to obtain equal weights, and the original and added mannitol extracted by crystallization. After separation of the mannitol salts rich in potassium chloride are obtained by precipitating with dipicrylamine, and iodine extracted from the remaining liquor by precipitating cuprous iodide by adding a copper salt solution and a reducing agent. The remaining liquid may be processed again for recovery of any residual mannitol. From the juice retained by the dialysing membranes laminarine is precipitated by adding alcohol, acetone, dioxane, or other solvent miscible with water, or by adding a lead salt. Fucoidin and possibly vitamins and antibiotic substances may also be obtained from this juice. The dialysis may, alternatively, be effected by means of parchment paper, fine cloth, or other membrane.ALSO:Mannitol is extracted from seaweed by dialysis of the juices extracted from the whole weed, or, alternatively, by dialysis of the juices during their extraction from the weeds using the membranes after latter to effect the dialysis. The weed is steeped in fresh or slightly acidulated water and withdrawn as soon as the greater part of the mannitol and other crystalloid substances have passed into the water. Magnesium and calcium salts are then precipitated by adding an alkaline carbonate or an alkaline or alkaline-earth hydroxide. After filtering off the calcium and magnesium salts the ratio of the weight of mannitol to the total weight of alkaline chlorides in the solution is determined, and if the weights are approximately equal the liquid is evaporated and the mannitol separated by crystallization. If the weight of mannitol is less than of the alkaline chlorides then pure mannitol is added to obtain equal weights, and the original and added mannitol extracted by crystallization. After separation of the mannitol salts rich in potassium chloride are obtained by precipitating with dipicrylamine, and iodine extracted from the remaining liquor by precipitating cuprous iodide by adding a copper salt solution and a reducing agent. The remaining liquid may be processed again for recovery of any residual mannitol. Laminerine is precipitated from the juice retained by the dialysing membranes by adding alcohol, acetone, dioxane, or other solvent miscible with water, or by adding a lead salt. Fucoidin and possibly vitamins and antibiotic substances may also be obtained from this juice. The dialysis may alternatively, be effected by means of parchment paper, fine cloth, or other membrane.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR757463X | 1954-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB757463A true GB757463A (en) | 1956-09-19 |
Family
ID=9166128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25416/54A Expired GB757463A (en) | 1954-03-08 | 1954-09-01 | Process for the extraction of mannitol from seaweed |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB757463A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2009482C2 (en) * | 2012-09-18 | 2014-03-19 | Stichting Energie | Process for mannitol extraction from seaweed. |
| CN104256252A (en) * | 2014-09-15 | 2015-01-07 | 福建农林大学 | Method for preparing seaweed product for reducing blood pressure via step-by-step extraction and bioconversion coupling |
-
1954
- 1954-09-01 GB GB25416/54A patent/GB757463A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2009482C2 (en) * | 2012-09-18 | 2014-03-19 | Stichting Energie | Process for mannitol extraction from seaweed. |
| CN104256252A (en) * | 2014-09-15 | 2015-01-07 | 福建农林大学 | Method for preparing seaweed product for reducing blood pressure via step-by-step extraction and bioconversion coupling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB435738A (en) | Improvements relating to the extraction of halogens from fluids | |
| GB1430217A (en) | Process for the preparation of an infusible storage-stable haemoglobin solution | |
| GB757463A (en) | Process for the extraction of mannitol from seaweed | |
| US2140341A (en) | Process for treating materials | |
| US3236833A (en) | Method of extracting carrageenan in the presence of hydrogen peroxide | |
| US1589519A (en) | Separation of sodium chloride from mixed salts | |
| US3359076A (en) | Precipitation of potassium halides from mixed brines using organic solvents | |
| US2451116A (en) | Method of recovering albumin adhering to egg shells | |
| JP5795426B1 (en) | Method for producing taurine | |
| SU1028237A3 (en) | Process for preparing heparin | |
| US2337947A (en) | Manufacture of rennet | |
| JPS5973561A (en) | Preparation of natural taurine | |
| US3089814A (en) | Process for the production of a concentrate of active substance from senna | |
| CN104814244A (en) | Extracting method for high-purity sweet potato protein | |
| SU124590A1 (en) | A method for extracting antifungal antibiotic nystatin from actinomycete mycelium | |
| US1808737A (en) | Method of producing citrus fruit products | |
| US2188092A (en) | Removal and recovery of laminarine from seaweed | |
| SU89570A1 (en) | The method of obtaining artificial gastric juice | |
| SU574391A1 (en) | Method of preparing magnesium hydroxide | |
| US2085768A (en) | Method of separating and isolating the thyreotropic and the gonadotropic hormone of the anterior lobe of the hypophysis | |
| US6316615B1 (en) | Process for the recovery of potassium bitartrate and other products from tamarind pulp | |
| SU41508A1 (en) | Method for separating boric acid from salt mixtures | |
| SU472509A3 (en) | The method of producing polyfructosan | |
| US1937671A (en) | Solid concentrates of vitamins and process of making same | |
| US1468251A (en) | Process for obtaining vitamines |