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NO127814B - - Google Patents

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Publication number
NO127814B
NO127814B NO00170961A NO17096167A NO127814B NO 127814 B NO127814 B NO 127814B NO 00170961 A NO00170961 A NO 00170961A NO 17096167 A NO17096167 A NO 17096167A NO 127814 B NO127814 B NO 127814B
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NO
Norway
Prior art keywords
resin
inclusion
resins
cross
compounds
Prior art date
Application number
NO00170961A
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English (en)
Inventor
J Solms
Original Assignee
Nestle Sa
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 Nestle Sa filed Critical Nestle Sa
Publication of NO127814B publication Critical patent/NO127814B/no

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0009Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
    • C08B37/0012Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L27/00Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/70Fixation, conservation, or encapsulation of flavouring agents
    • A23L27/72Encapsulation
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L27/00Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/70Fixation, conservation, or encapsulation of flavouring agents
    • A23L27/74Fixation, conservation, or encapsulation of flavouring agents with a synthetic polymer matrix or excipient, e.g. vinylic, acrylic polymers
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L27/00Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/70Fixation, conservation, or encapsulation of flavouring agents
    • A23L27/75Fixation, conservation, or encapsulation of flavouring agents the flavouring agents being bound to a host by chemical, electrical or like forces, e.g. use of precursors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06Preparation of nitro compounds
    • C07C201/16Separation; Purification; Stabilisation; Use of additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B31/00Preparation of derivatives of starch
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/16Cyclodextrin; Derivatives thereof

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Nutrition Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

Vannuoppløselig inklusjonsharpiks for anvendelse som
selektivt adsorbsjonsmiddel og beskyttelsesmiddel
samt fremgangsmåte til fremstilling derav.
Foreliggende oppfinnelse vedrører vannuoppiøsenglnKiusjoiia-harpiks for anvendelse som selektivt adsorbsjonsmiddel og beskyttelsesmiddel samt fremgangsmåte til fremstilling derav.
Med uttrykket "inklusjonsharpiks" menes harpiksholdige stoffer som er uoppløselige i vann og som har den egenskap at de danner inklusj onskomplekser,
Flere karbohydrater kan danne inklusjonskomplekser med forbindelser av lav molekylvekt. De karbohydrater som har denne egenskap har hule spiralformede eller sylindriske molekyler som har evne til å inneslutte flere forskjellige uorganiske og organiske forbindelser i hulrommene i molekylet. De resulterende inklusjonskomplekser består av to forskjellige komponenter, vertmolekylet og gjestmolekylet.
Kreftene som binder vert- og gjestmolekylene sammen er av
I
Van der Waal typen,| dvs. snarere fysiske enn kjemiske krefter. Kom-pleksene er imidlertid temmelig stabile og gjestmolekylene er beskyt-tet, f.eks. mot enzymatisk eller oksyderende angrep, og har-i alminne-lighet nedsatt flyktighet.
Et trekk ved inklusjonsharpiksen er at ved dannelsen av inklusj onskomplekser jer harpiksene selektive fordi gjestmolekylene om-sluttes ifølge derejs form og ikke ifølge ladning eller molekylvekt. En anvendelse av harpiksene er således i en ny type kromatografi hvor to eller flere strukturelle isomerer kan skilles ved bruk av en harpiks som spesifikt bare inneholder en av isomerene.
I norsk søknad nr. 157 873 beskrives en vannuoppløselig in-klus j onsharpiks sorri består av en kryssbundet forbindelse valgt fra cyklo-dextrin, acyklisk diextrin og amylose, hvilken forbindelse er kryssbundet med et kryssbindemiddel ved dens reaktive hydroksylgruppe. Disse inklusj onsharpikser som er uoppløselige i vann og oppviser inklusjonsegenskaper overfor spesielle organiske og uorganiske forbindelser, fremstilles ved at minSjt noen av de reaktive hydroksylgrupper i cyklodextrin, acyklisk dextjrin eller amylose omsettes med et kryssbindemiddel som kan danne kryssbindinger med de reaktive hydroksylgrupper, hvor det som kryssbindemiddel anvendes formaldehyd eller en bifunksjonell forbindelse.
Blant forbindelser som kan anvendes for dannelse av kryss-
1
bindinger med hydroksylgrupper er forbindelser med reaktive halogen-atomer, særlig klorjatomer, og også forbindelser med epoksygrupper. Spesielt egnede forbindelser er epiklorhydrin, diklorhydrin, diepoksy-butan, diepoksy-propyleter, etylenglykoldiepoksy-propyleter og beslekt-ede forbindelser.
Det er ijfølge oppfinnelsen funnet at det er mulig å modifi-sere strukturen til den ovenfor omtalte cyklodextrinharpiks slik at det oppnåes en-inklusjonsharpiks med andre reaksjonsegenskaper. Ifølge foreliggende oppfinnelse er det således tilveiebragt vannuoppløselig inklusjonsharpiks som er kjennetegnet ved at den består av en med hensyn til de sekundære hydroksylgrupper oksydert kryssbundet cyklodextrinharpiks.
Denne inklusjonsharpiks som oppviser inklusjonsegenskaper overfor spesielle organiske og uorganiske forbindelser og som kan anvendes som selektivt adsorbsjonsmiddel og kjemisk beskyttelsesmiddel, fremstilles ifølge oppfinnelsen ved at de sekundære hydroksylgrupper i kryssbundne cyklodefxtrinharpikser oksyderes og at det som oksydasjons-
i
middel anvendes et per.jodat. Oksvdas.i onen med per.iodat leder til dannelse av aldehydgrupper istedenfor de sekundære hydroksyl-gruppene i karbohydratet. Slike produkter er spesielt nyttige som sul-fittfjerningsmidler og er stabile overfor alkalier. De oksyderte harpikser kan om ønsket behandles med hydroksylamin, hvilket resulterer i reaksjonsprodukter av oksim-typen, som har en betydelig affinitet overfor metallioner. Strukturen til de oksyderte harpikser kan også modifiseres ved reduksjon f.eks. med natriumborhydrid eller litiumaluminium-hydrid. De oksyderte harpiksene kan om ønsket videre modifiseres f. eks. ved en annen oksydasjon med et mildt oksydasjonsmiddel slik som natriumkloritt, og dette gir de karboksylderivater, som danner stabile salter med tunge metallioner. Disse harpikser er således også i stand til å virke som meget spesifikke ioneutvekslingsharpikser.
Inklusjonsharpiksene ifølge foreliggende oppfinnelse kan anvendes til forskjellige formål. Inklusjonskompleksene kan f.eks. dannes mellom harpiksene og spesielle forbindelser som er tilstede i bland-ing med andre forbindelser. Dette kan gjøres ved ganske enkelt å til-sette harpiksen, i pulverform eller granulatform, til en oppløsning inneholdende den ønskede forbindelse og blandingen gis anledning til å nå likevektsbetingelser. Separeringen kan alternativt foretas i en kolonne ved bruk av en spesiell temperatur, pH og/eller oppløsnings-middelgradienter, idet harpiksen omslutter gjestmolekylet i overens-stemmelse med dets form. Inklusjonskomplekset kan deretter fjernes f.eks. ved filtrering eller dekantering og forbindelsen kan gjenvinnes fra komplekset f.eks. ved oppvarming til forhøyet temperatur eller ved dampdestillasjon.
Inklusjonskompleksene kan alternativt dannes ved å føre en oppløsning inneholdende den ønskede forbindelse gjennom en kolonne inneholdende inklusj onsharpiksen.
En videre anvendelse av inklusjonsharpiksene, er til stabi-lisering av flyktige og/eller ustabile stoffer slik som vitaminer og flyktige aromatiske bestanddeler som finnes i matvarer.
Følgende eksempel illustrerer oppfinnelsen.
Eksempel 1
7 g av en inklusjonsharpiks fremstilt fra cyklodextrin og epiklorhydrin, innføres i en oppløsning inneholdende 3 % vekt/volum av natriumklorid og 200 ml 0.4M natriumperjodat. Reaksjonsblandingen holdes på et mørkt sted i 24 timer ved 4°C. Det resulterende dialdehyd-derivat av harpiksen vaskes med etylenglykol og frigjøres fra jodatet med vann. Sluttlig vaskes det med aceton og tørkes under forminsket trykk. 1 g av<1>den oksyderte harpiks tilsettes til 100 ml. 0.1 N bi-sulfittoppløsning. Når likevekt er nådd har harpiksen absorbert 5 milliekvivalenter (dvs. mer enn 50 %) av den tilstedeværende bisulfitt.

Claims (2)

1. Vannuoppløselig inklusjonsharpiks for anvendelse som selektivt adsorbsjonsmiddel og beskyttelsesmiddel,karakterisertved at den består av en med hensyn til de sekundære hydroksylgrupper oksydert kryssbundet cyklodextrinharpiks.
2. Fremgangsmåte til fremstilling av inklusjonsharpiks ifølge krav 1,karakterisert vedat de sekundære hydroksylgrupper i kryssbundne cyklodextrinharpikser oksyderes og at det som oksydasjonsmiddel; anvendes et perjodat.
NO00170961A 1964-04-29 1967-12-13 NO127814B (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH561564A CH445129A (fr) 1964-04-29 1964-04-29 Procédé pour la préparation de composés d'inclusion à poids moléculaire élevé

Publications (1)

Publication Number Publication Date
NO127814B true NO127814B (no) 1973-08-20

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ID=4296563

Family Applications (2)

Application Number Title Priority Date Filing Date
NO00157873A NO126377B (no) 1964-04-29 1965-04-28
NO00170961A NO127814B (no) 1964-04-29 1967-12-13

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Application Number Title Priority Date Filing Date
NO00157873A NO126377B (no) 1964-04-29 1965-04-28

Country Status (10)

Country Link
US (1) US3420788A (no)
BE (1) BE662174A (no)
CH (1) CH445129A (no)
DK (1) DK132259C (no)
ES (1) ES312034A1 (no)
GB (1) GB1091637A (no)
IT (1) IT961352B (no)
NL (1) NL6505361A (no)
NO (2) NO126377B (no)
SE (2) SE333240B (no)

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ES312034A1 (es) 1966-02-01
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DE1493047B2 (de) 1973-01-11
BE662174A (no) 1965-10-07
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DK132259C (da) 1976-05-03
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