SE8404343D0 - POLYJONIC MICROCAPE COVER - Google Patents

POLYJONIC MICROCAPE COVER

Info

Publication number
SE8404343D0
SE8404343D0 SE8404343A SE8404343A SE8404343D0 SE 8404343 D0 SE8404343 D0 SE 8404343D0 SE 8404343 A SE8404343 A SE 8404343A SE 8404343 A SE8404343 A SE 8404343A SE 8404343 D0 SE8404343 D0 SE 8404343D0
Authority
SE
Sweden
Prior art keywords
solution
temporary matrix
polyjonic
microcape
cover
Prior art date
Application number
SE8404343A
Other languages
Swedish (sv)
Other versions
SE8404343L (en
Inventor
Jr A P Jarvis
Original Assignee
Damon Biotech Inc
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 Damon Biotech Inc filed Critical Damon Biotech Inc
Publication of SE8404343D0 publication Critical patent/SE8404343D0/en
Publication of SE8404343L publication Critical patent/SE8404343L/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1605—Excipients; Inactive ingredients
    • A61K9/1629—Organic macromolecular compounds
    • A61K9/1652—Polysaccharides, e.g. alginate, cellulose derivatives; Cyclodextrin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5005—Wall or coating material
    • A61K9/5021—Organic macromolecular compounds
    • A61K9/5031—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poly(lactide-co-glycolide)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/08—Simple coacervation, i.e. addition of highly hydrophilic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/20—After-treatment of capsule walls, e.g. hardening
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N11/00—Carrier-bound or immobilised enzymes; Carrier-bound or immobilised microbial cells; Preparation thereof
    • C12N11/02—Enzymes or microbial cells immobilised on or in an organic carrier
    • C12N11/04—Enzymes or microbial cells immobilised on or in an organic carrier entrapped within the carrier, e.g. gel or hollow fibres

Abstract

A process for damage-free encapsulation of a variety of core materials including viable cells involves suspending the core material in an aqueous solution of a polysaccharide containing cationic groups, such as an aminated glucopolysaccharide. A temporary matrix is formed by gelling droplets of the suspension using a solution containing a divalent or multivalent anion. The temporary matrix is permanently cross-linked with a polymeric material containing plural anionic groups, e.g., polyaspartic or polyglutamic acid, to form a semipermeable membrane. The interior of the microcapsule may be resolubilized by subjecting it to a solution of low molecular weight cations. <IMAGE>
SE8404343A 1983-09-01 1984-08-31 POLYJONIC MICROCAPE COVER SE8404343L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52839583A 1983-09-01 1983-09-01

Publications (2)

Publication Number Publication Date
SE8404343D0 true SE8404343D0 (en) 1984-08-31
SE8404343L SE8404343L (en) 1985-03-02

Family

ID=24105521

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8404343A SE8404343L (en) 1983-09-01 1984-08-31 POLYJONIC MICROCAPE COVER

Country Status (14)

Country Link
JP (1) JPS6075326A (en)
AU (1) AU563653B2 (en)
BE (1) BE900469A (en)
CA (1) CA1245984A (en)
CH (1) CH664472A5 (en)
DE (1) DE3432143A1 (en)
DK (1) DK419184A (en)
FR (1) FR2551455B1 (en)
GB (1) GB2145992B (en)
IL (1) IL72787A (en)
IT (1) IT1196742B (en)
NL (1) NL8402671A (en)
NO (1) NO843481L (en)
SE (1) SE8404343L (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60175539A (en) * 1984-02-23 1985-09-09 Snow Brand Milk Prod Co Ltd Capsule and its production
NO166836C (en) * 1985-03-14 1991-09-11 Univ California PROCEDURE FOR TREATMENT OF AN ORGAN TRANSPLANT.
GB8705464D0 (en) * 1987-03-09 1987-04-15 Atomic Energy Authority Uk Composite material
JPS6434436A (en) * 1987-07-28 1989-02-03 Sanyo Chemical Ind Ltd Gel cellular beads and manufacture thereof
CA1319632C (en) * 1988-04-22 1993-06-29 Carol Louise Nolan Method for microbial immobilization
US4952618A (en) * 1988-05-03 1990-08-28 Minnesota Mining And Manufacturing Company Hydrocolloid/adhesive composition
DE3941873A1 (en) * 1989-12-19 1991-06-20 Jakob Dr Bodziony Hollow fibres coated which cells with inhibit coagulation - for long-term use as implants in arteries and veins to carry sensors
DE4012079C2 (en) * 1990-04-14 1997-11-06 Jakob Dr Bodziony Implantable exchange and diffusion chamber
US5487390A (en) * 1990-10-05 1996-01-30 Massachusetts Institute Of Technology Gas-filled polymeric microbubbles for ultrasound imaging
US5149543A (en) * 1990-10-05 1992-09-22 Massachusetts Institute Of Technology Ionically cross-linked polymeric microcapsules
US5562099A (en) * 1990-10-05 1996-10-08 Massachusetts Institute Of Technology Polymeric microparticles containing agents for imaging
FR2694894B1 (en) * 1992-08-20 1994-11-10 Coletica Use of a transacylation reaction between an esterified polysaccharide and a polyamine or polyhydroxylated substance for the manufacture of microparticles, process and composition.
FR2703927B1 (en) * 1993-04-13 1995-07-13 Coletica Use of a transacylation reaction between an esterified polysaccharide and a polyamine to form in an aqueous medium a membrane at least on the surface of gelled particles.
DE4312970A1 (en) * 1993-04-21 1994-10-27 Juergen Dr Schrezenmeir Microcapsule and process and apparatus for production thereof
DE4426396A1 (en) * 1994-07-26 1996-02-01 Ulrich Prof Dr Zimmermann Process for the preparation of concentrated solutions of microencapsulated cells or of suspended active substances in microencapsulated form
US5540927A (en) * 1995-04-12 1996-07-30 Monsanto Company Microencapsulation process by coacervation
US7101575B2 (en) 1998-03-19 2006-09-05 Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. Production of nanocapsules and microcapsules by layer-wise polyelectrolyte self-assembly
ATE524166T1 (en) * 1998-03-19 2011-09-15 Max Planck Gesellschaft CAPSULES CONTAINING LIPIDS IN THE SHELL
DE102004013637A1 (en) 2004-03-19 2005-10-13 Capsulution Nanoscience Ag Process for the preparation of CS particles and microcapsules using porous templates as well as CS particles and microcapsules
DE102005002483A1 (en) * 2005-01-18 2006-08-03 Ehrfeld Mikrotechnik Bts Gmbh Method for encapsulating sensor molecules with a semipermeable membrane
FR2986165B1 (en) 2012-01-31 2015-07-24 Capsum PROCESS FOR PREPARING RIGIDIFIED CAPSULES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4352883A (en) * 1979-03-28 1982-10-05 Damon Corporation Encapsulation of biological material
NO158284C (en) * 1981-03-13 1988-08-17 Damon Biotech Inc PROCEDURE FOR SELECTIVE USE OF A PERMEABLE MEMBRANE.

Also Published As

Publication number Publication date
IL72787A0 (en) 1984-11-30
NO843481L (en) 1985-03-04
CA1245984A (en) 1988-12-06
NL8402671A (en) 1985-04-01
DK419184D0 (en) 1984-08-31
IL72787A (en) 1987-12-31
IT8467874A0 (en) 1984-09-03
DE3432143C2 (en) 1987-05-14
DK419184A (en) 1985-03-02
GB8422052D0 (en) 1984-10-03
FR2551455B1 (en) 1989-09-15
JPS6075326A (en) 1985-04-27
IT1196742B (en) 1988-11-25
FR2551455A1 (en) 1985-03-08
AU563653B2 (en) 1987-07-16
AU3263484A (en) 1985-03-07
GB2145992B (en) 1987-02-18
BE900469A (en) 1984-12-17
DE3432143A1 (en) 1985-03-21
IT8467874A1 (en) 1986-03-03
SE8404343L (en) 1985-03-02
CH664472A5 (en) 1988-03-15
GB2145992A (en) 1985-04-11

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