GB1095268A - An improved method for the oxidation of starches and other polysaccharides - Google Patents

An improved method for the oxidation of starches and other polysaccharides

Info

Publication number
GB1095268A
GB1095268A GB3566464A GB3566464A GB1095268A GB 1095268 A GB1095268 A GB 1095268A GB 3566464 A GB3566464 A GB 3566464A GB 3566464 A GB3566464 A GB 3566464A GB 1095268 A GB1095268 A GB 1095268A
Authority
GB
United Kingdom
Prior art keywords
polysaccharide
oxidation
oxidized
precipitation
starch
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
GB3566464A
Inventor
Priyavadan Chhaganlal Mehta
Hemendra Umiashankar Mehta
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.)
AHMEDABAD TEXTILE IND
Original Assignee
AHMEDABAD TEXTILE IND
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 AHMEDABAD TEXTILE IND filed Critical AHMEDABAD TEXTILE IND
Priority to GB3566464A priority Critical patent/GB1095268A/en
Publication of GB1095268A publication Critical patent/GB1095268A/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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C08B15/02—Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

In a process for the oxidation of neutral polysaccharides, the polysaccharide is oxidized with alkaline hypochlorite (pH 9-12) or with chlorine in water at a pH below 7 in the presence of a multivalent metal salt or salts at a temperature below 70 DEG C. or, for starch, below the gelatenization temperature, and the oxidized polysaccharide is recovered by neutralization, or by acidification, or by precipitation with alcohol, or by precipitation as an insoluble metal salt, followed by filtration and drying. The polysaccharide may be starch, cellulose or the polysaccharide contained in tamarind kernal. Specified multivalent salts are MgCl2, ZnCl2 NiSO4 and CuSO4. Either sodium or calcium hypochlorite may be used. The oxidation introduces carboxylic acid groups with a minimum of depolymerization. The oxidized products are easily dispersible in water to give pastes having little or no tendency to retrograde.
GB3566464A 1964-09-01 1964-09-01 An improved method for the oxidation of starches and other polysaccharides Expired GB1095268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3566464A GB1095268A (en) 1964-09-01 1964-09-01 An improved method for the oxidation of starches and other polysaccharides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3566464A GB1095268A (en) 1964-09-01 1964-09-01 An improved method for the oxidation of starches and other polysaccharides

Publications (1)

Publication Number Publication Date
GB1095268A true GB1095268A (en) 1967-12-13

Family

ID=10380219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3566464A Expired GB1095268A (en) 1964-09-01 1964-09-01 An improved method for the oxidation of starches and other polysaccharides

Country Status (1)

Country Link
GB (1) GB1095268A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302475A (en) * 1979-06-20 1981-11-24 Bohsei Enterprise, Ltd. Method of producing milo starch
US5126334A (en) * 1990-12-05 1992-06-30 Cpc International, Inc. Absorbable dusting powder derived from starch
US5385608A (en) * 1990-12-05 1995-01-31 Cpc International Inc. Absorbable dusting powder derived from reduced-protein modified starch
US6774277B2 (en) 2000-03-07 2004-08-10 Waste Management, Inc. Methods of destruction of cyanide in cyanide-containing waste
WO2018191242A1 (en) * 2017-04-10 2018-10-18 Corn Products Development, Inc. Sulfite-free, rapid setting, thermal-reversible modified potato starch gelling agent and products made therefrom

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302475A (en) * 1979-06-20 1981-11-24 Bohsei Enterprise, Ltd. Method of producing milo starch
US5126334A (en) * 1990-12-05 1992-06-30 Cpc International, Inc. Absorbable dusting powder derived from starch
US5385608A (en) * 1990-12-05 1995-01-31 Cpc International Inc. Absorbable dusting powder derived from reduced-protein modified starch
US6774277B2 (en) 2000-03-07 2004-08-10 Waste Management, Inc. Methods of destruction of cyanide in cyanide-containing waste
WO2018191242A1 (en) * 2017-04-10 2018-10-18 Corn Products Development, Inc. Sulfite-free, rapid setting, thermal-reversible modified potato starch gelling agent and products made therefrom

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