GB977692A - Preparation of degraded carrageenin - Google Patents

Preparation of degraded carrageenin

Info

Publication number
GB977692A
GB977692A GB143360A GB143360A GB977692A GB 977692 A GB977692 A GB 977692A GB 143360 A GB143360 A GB 143360A GB 143360 A GB143360 A GB 143360A GB 977692 A GB977692 A GB 977692A
Authority
GB
United Kingdom
Prior art keywords
carrageenin
degraded
solution
adjusted
acetone
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
Application number
GB143360A
Inventor
William Anderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UCB Pharma Ltd
Original Assignee
Evans Medical Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Evans Medical Ltd filed Critical Evans Medical Ltd
Priority to GB143360A priority Critical patent/GB977692A/en
Publication of GB977692A publication Critical patent/GB977692A/en
Expired legal-status Critical Current

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
    • C08B37/0036—Galactans; Derivatives thereof
    • C08B37/0042—Carragenan or carragen, i.e. D-galactose and 3,6-anhydro-D-galactose, both partially sulfated, e.g. from red algae Chondrus crispus or Gigantia stellata; kappa-Carragenan; iota-Carragenan; lambda-Carragenan; Derivatives thereof

Abstract

Carrageenin in seaweed containing at least 28% of ester sulphate is degraded by treatment with hydrochloric or sulphuric acid, an aqueous solution of the degraded carrageenin is formed and its pH adjusted to at least 7 by the addition of aqueous sodium hydroxide, and the degraded carrageenin is separated from the pH adjusted solution by the addition of acetone or isopropanol. The seaweed may be of the Chondrus, Gigartina, or Eucheuma species. Solution may be prevented during degradation by the presence of acetone. Treatment with acid may be effected at 70-75 DEG C. for 1-3 hours. The pH adjusted solution may be treated with activated carbon at 90 DEG C. and then filtered. The degraded carrageenin contains 28-32% of sulphate, has a solubility of greater than 50%, and has a viscosity of 30\sB10 centipoises at 25 DEG C.
GB143360A 1960-01-14 1960-01-14 Preparation of degraded carrageenin Expired GB977692A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB143360A GB977692A (en) 1960-01-14 1960-01-14 Preparation of degraded carrageenin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB143360A GB977692A (en) 1960-01-14 1960-01-14 Preparation of degraded carrageenin

Publications (1)

Publication Number Publication Date
GB977692A true GB977692A (en) 1964-12-09

Family

ID=9721944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB143360A Expired GB977692A (en) 1960-01-14 1960-01-14 Preparation of degraded carrageenin

Country Status (1)

Country Link
GB (1) GB977692A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480138A1 (en) * 1980-04-09 1981-10-16 Fmc Corp MODIFIED EXTRACT OF EUCHEUMA COTTONII ALGAE AND CHOCOLATE MILK STABILIZED BY THIS EXTRACT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480138A1 (en) * 1980-04-09 1981-10-16 Fmc Corp MODIFIED EXTRACT OF EUCHEUMA COTTONII ALGAE AND CHOCOLATE MILK STABILIZED BY THIS EXTRACT

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