CH244249A - Process for breaking down pectins. - Google Patents

Process for breaking down pectins.

Info

Publication number
CH244249A
CH244249A CH244249DA CH244249A CH 244249 A CH244249 A CH 244249A CH 244249D A CH244249D A CH 244249DA CH 244249 A CH244249 A CH 244249A
Authority
CH
Switzerland
Prior art keywords
pectins
hydrogen peroxide
breaking down
degradation
degrading effect
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Unipektin
Original Assignee
Ag Unipektin
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 Ag Unipektin filed Critical Ag Unipektin
Publication of CH244249A publication Critical patent/CH244249A/en

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Classifications

    • 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
    • C08B37/0045Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Galacturonans, e.g. methyl ester of (alpha-1,4)-linked D-galacturonic acid units, i.e. pectin, or hydrolysis product of methyl ester of alpha-1,4-linked D-galacturonic acid units, i.e. pectinic acid; Derivatives thereof

Landscapes

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

Description

  

      Verfahren    zum     Abbau    von Pektinen.    Vorliegende Erfindung betrifft ein Ver  fahren zum Abbau von Pektinen.  



  Es hat sich gezeigt, dass der irreversible,       ogydative    Abbau von Pektinen nicht nur  durch     Endiole        wie    z. B. Ascorbinsäure, wie  im Hauptpatent angegeben, sondern auch  durch andere Verbindungen     bewirkt    werden  kann. Die beim Abbau     anfallenden        Endstoffe     sind in beiden Fällen die gleichen. Es ent  stehen     Verbindungen    mit niedrigeren Mole  kulargewichten als der Ausgangsstoff.

   Die       typischen    Eigenschaften de Endstoffes     sind     deshalb auch die gleichen     beim    vorliegenden  Verfahren wie beim Verfahren nach dem  Hauptpatent durch Abbau     mit        Hilfe    von       Endiolen.    Auch     beim    vorliegenden Verfahren  werden die     wässrigen        Pektinlösungen    weniger  viskos und leichter     filtrierbar.     



  Schon     beim.    Verfahren nach dem Haupt  patent hat sich als     besonders    geeignet für den  Abbau ein Zusatz von     Wasserstoffperoxyd          erwiesen,    da es die abbauende     Wirkung    der  Ascorbinsäure stark erhöht und     beschleunigt.     Es wurde nun gefunden, dass schon beim    alleinigen Zusatz von geringen     Mengen    Was  serstoffperoxyd zur     wässrigen        Polysaccharid-          lösung    bei     Zimmertemperatur    in     gewissem     Umfange bereits     ein    irreversibler,

       ogydativer     Abbau der hochpolymeren     Polysaccharide    er  folgt, der     viskosimetrisch    am     leichtesten    fest  stellbar ist. Wahrscheinlich     :spielen    hierbei       geringe        Verunreinigungen    in der     Lösung    eine  Rolle, indem sie eine     Aktivierung    des     Wasser-          sfoffperogyds    verursachen.     Ähnlich        wie        beim.     Zusatz von Ascorbinsäure kann nun auch die  abbauende     Wirkung    des:

       W        asserstoffperogyds     durch Zusatz von geringen Mengen     Redog-          regulatoren    wie     Perrosalz,    oder durch Tem  peraturerhöhung über 50  C bedeutend ge  steigert werden.  



  <I>Beispiel:</I>  Eine     0,25@%ige        Pektinlösung        wird    bei  Zimmertemperatur     mit    0,09 g Wasserstoff  peroxyd und 0,04 g     Ferrosulfat    pro Liter  abgebaut. Die spezifische Viskosität der Lö  sung,     in    Prozent der stabilen     Pektinlösung     ohne Zusatz von     Wasserstoffperoxyd        und          F'errosulfat,    sinkt innerhalb fünf Minuten      auf 50 %, in einer Stunde auf 15 %     und        be-          trägt    nach vier Stunden nur noch 3 % des  Ausgangswertes.

   Die anfangs hochviskose  Lösung hat also praktisch die     Viskosität     reinen Wassers angenommen. Mit Alkohol  tritt jetzt keine     gelatinöse    Fällung mehr ein.



      Process for breaking down pectins. The present invention relates to a method for breaking down pectins.



  It has been shown that the irreversible, ogydative degradation of pectins is not only caused by endiols such as z. B. ascorbic acid, as indicated in the main patent, but can also be effected by other compounds. The end products produced during the breakdown are the same in both cases. There are compounds with lower molecular weights than the starting material.

   The typical properties of the end product are therefore also the same in the present process as in the process according to the main patent by degradation with the aid of endiols. In the present process, too, the aqueous pectin solutions become less viscous and easier to filter.



  Already at. The process according to the main patent has proven to be particularly suitable for the degradation of an addition of hydrogen peroxide, as it greatly increases and accelerates the degrading effect of ascorbic acid. It has now been found that even the mere addition of small amounts of hydrogen peroxide to the aqueous polysaccharide solution at room temperature already leads to an irreversible,

       ogydative degradation of the high-polymer polysaccharides it follows, which is viscometrically the easiest to determine. Probably: minor impurities in the solution play a role here by activating the hydrogen peroxide. Similar to the. The addition of ascorbic acid can now also reduce the degrading effect of:

       Hydrogen perogyds can be increased significantly by adding small amounts of redog regulators such as Perrosalt, or by increasing the temperature above 50 C.



  <I> Example: </I> A 0.25% pectin solution is broken down at room temperature with 0.09 g hydrogen peroxide and 0.04 g ferrous sulfate per liter. The specific viscosity of the solution, as a percentage of the stable pectin solution without the addition of hydrogen peroxide and ferrous sulfate, falls to 50% within five minutes, to 15% in one hour and is only 3% of the initial value after four hours.

   The initially highly viscous solution has practically assumed the viscosity of pure water. Gelatinous precipitation no longer occurs with alcohol.

 

Claims (1)

PATENTANSPRUCH: Verfahren zum Abbau von Pektinen, da durch gekennzeichnet, dass man den zu ver arbeitenden Ausgangsstoff in wässriger Lö sung mit geringen Zusätzen von Wasserstoff peroxyd behandelt, so dass derselbe oxyda- tiv einen irreversiblen Abbau zu niedermole- kulareren Verbindungen erfährt. UNTERANSPRüCHE 1. PATENT CLAIM: Process for the degradation of pectins, characterized in that the starting material to be processed is treated in an aqueous solution with small additions of hydrogen peroxide, so that the same undergoes an irreversible oxidative degradation to lower molecular weight compounds. SUBCLAIMS 1. Verfahren nach Patentanspruch, da durch gekennzeichnet, dass die abbauende Wirkung des Wasserstoffperoxyds durch minime Zusätze von Redoxregulatoren ge steigert wird. 2. Verfahren nach Patentanspruch und Unteranspruch 1, dadurch gekennzeichnet, dass die abbauende Wirkung durch Arbeiten bei Temperaturen über 50 C erhöht wird. Process according to patent claim, characterized in that the degrading effect of the hydrogen peroxide is increased by adding minimal redox regulators. 2. The method according to claim and dependent claim 1, characterized in that the degrading effect is increased by working at temperatures above 50 C.
CH244249D 1944-12-12 1944-12-12 Process for breaking down pectins. CH244249A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH237377T 1944-12-12
CH244249T 1944-12-12

Publications (1)

Publication Number Publication Date
CH244249A true CH244249A (en) 1946-08-31

Family

ID=25728251

Family Applications (1)

Application Number Title Priority Date Filing Date
CH244249D CH244249A (en) 1944-12-12 1944-12-12 Process for breaking down pectins.

Country Status (1)

Country Link
CH (1) CH244249A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545101A1 (en) * 1983-04-29 1984-11-02 Agronomique Inst Nat Rech PROCESS FOR MODIFICATION OF BEET PECTINS, PRODUCTS OBTAINED AND THEIR APPLICATIONS
EP1153933A1 (en) * 2000-05-12 2001-11-14 Seiko Epson Corporation Process for the manufacture of polyuronic acids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545101A1 (en) * 1983-04-29 1984-11-02 Agronomique Inst Nat Rech PROCESS FOR MODIFICATION OF BEET PECTINS, PRODUCTS OBTAINED AND THEIR APPLICATIONS
EP0124439A2 (en) * 1983-04-29 1984-11-07 Institut National De La Recherche Agronomique Process for the modification of pectins from sugar beets, products obtained and their use
EP0124439A3 (en) * 1983-04-29 1984-12-12 Institut National De La Recherche Agronomique Process for the modification of pectins from sugar beets, products obtained and their use
EP1153933A1 (en) * 2000-05-12 2001-11-14 Seiko Epson Corporation Process for the manufacture of polyuronic acids
US6903209B2 (en) 2000-05-12 2005-06-07 Seiko Epson Corporation Process for the manufacture of polyuronic acids

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