DE1019543B - Method of preventing potatoes from discolouring - Google Patents

Method of preventing potatoes from discolouring

Info

Publication number
DE1019543B
DE1019543B DEB25919A DEB0025919A DE1019543B DE 1019543 B DE1019543 B DE 1019543B DE B25919 A DEB25919 A DE B25919A DE B0025919 A DEB0025919 A DE B0025919A DE 1019543 B DE1019543 B DE 1019543B
Authority
DE
Germany
Prior art keywords
potatoes
water
phosphates
salts
soluble
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.)
Pending
Application number
DEB25919A
Other languages
German (de)
Inventor
Dr Paul Michels
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.)
Joh A Benckiser GmbH
Original Assignee
Joh A Benckiser GmbH
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 Joh A Benckiser GmbH filed Critical Joh A Benckiser GmbH
Priority to DEB25919A priority Critical patent/DE1019543B/en
Publication of DE1019543B publication Critical patent/DE1019543B/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00Preservation or chemical ripening of fruit or vegetables
    • A23B7/14Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
    • A23B7/153Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
  • Storage Of Fruits Or Vegetables (AREA)

Description

Verfahren zur Verhinderung des Verfärbens von Kartoffeln Es wurden schon verschiedentlich Vorschläge zur Verhinderung der beim Kochen häufig auftretenden Dunkelfärbungen. von: insbesondere älteren Kartoffeln gemacht, so unter anderem. durch Zusatz einer Wein steinlösuiig oder von Citrone:nsäure gemeinsam mit Natriumsulfit. Auch ist die: Verwendung von löslichen Orthophospha,ten, zur Ausfällung von in. Wasser gelösten Eisenverbindungen bekannt, um beim Kochen von. Kartoffeln deren. Dunkelfärbung zu verhindern. Zum Kochwasser von roten Früchten und roten vegetabilischen Produkten hat ma,n bereits Phosphate zur Farberhaltung zugesetzt. Diese und, andere Zusätze sind aber entweder nur unvollkommen wirksam oder verhältnismäßig teuer oder vom gesundheitlichen, oder geschmacklichen Standpunkt aus nicht unbedenklich oder nicht erwünscht.Methods for preventing staining of potatoes There have been Various suggestions have been made to prevent those that often occur during cooking Dark colors. made by: especially older potatoes, so among others. by adding a wine stone solution or lemon acid together with sodium sulfite. Also is: the use of soluble orthophosphates to precipitate in. Water dissolved iron compounds are known to help when cooking. Potatoes whose. To prevent darkening. For cooking red fruit and red vegetable water I have already added phosphates to products to maintain their color. These and others However, additives are either only imperfectly effective or relatively expensive or from a health or taste point of view not harmless or not wanted.

Es wurde nun. gefunden, daß man. eine Dunkelfärbung von Kartoffeln im rohen Zustand wie auch insbesondere bei und nach dem Kochen zuverlässig verhindern und die Farbe älterer Kartoffeln auch wieder aufhellen. kann, wenn man ihnen oder dem Kochwasser polymere Phosphate zusetzt, deren Wirkung auf die Bindung die Verfärbung verursachender oder auslösender Substanzen, die: in den Kartoffeln anwesend sind, zurückzuführen ist.It was now. found that one. a darkening of potatoes in the raw state as well as especially during and after cooking and lighten the color of older potatoes again. can if you have them or Adds polymeric phosphates to the boiling water, the effect of which on the binding is the discoloration causative or triggering substances that: are present in the potatoes, is due.

Unter polymeren Phosphaten sind die: Salze der Pyro-, Pody- und Metaphosphorsäuren. zu verstehen, von denen im Rahmen vorliegender Erfindung insbesondere die wasserlöslichen Salze und unter ihnen bevorzugt die Alka.lisalze in Betracht kommen,. Auch die an sieh als schwer- oder unlöslich bezeichneten Alkaliineta,phosphate (Kurrolsche, Salze) kommen in Betracht, wenn sie: in an sich bekannter Weise löslich gemacht sind. Unter den polymeren Phosphaten werden vor allem die- sauren Pyrophospha.te der allgemeinen Formel 11I H, P, 07 bevorzugt. Die polymeren Phosphate können auch im Gemisch und gegebenenfalls zusammen mit Genußsäuren oder deren Salzen, wie insbesondere: Citraten. oder Tartra,ten, oder sonstigen., dem gleichen Zweck dienlichen Stoffen, angewandt werden.. Die den Kartoffeln oder dem Kochwasser zuzusetzenden Mengen der Salze sind gering und betragen im allgemeinen weniger als 1 °/o, bezogen auf das Gewicht der Kartoffeln, doch soll damit für ihre Anwendung keine obere, Grenze gesetzt sein.Among polymeric phosphates are the: salts of pyro-, pody- and metaphosphoric acids. to understand, of which in the context of the present invention in particular the water-soluble salts and among them preferably the alkali salts are suitable. The alkali metal beta, phosphates (Kurrol's, salts) which are referred to as poorly soluble or insoluble can also be used if they are: made soluble in a manner known per se. Among the polymeric phosphates, the acidic pyrophosphates of the general formula 11I H, P, 07 are particularly preferred. The polymeric phosphates can also be used as a mixture and, if appropriate, together with food acids or their salts, such as in particular: citrates. or tartar, or other substances useful for the same purpose. The quantities of salts to be added to the potatoes or to the cooking water are small and are generally less than 1 per cent, based on the weight of the potatoes no upper limit should therefore be set for their application.

Beispiele 1. Zu 10 kg geschälten Kartoffeln. wird so viel Wasser und Kochsalz in üblicheir Menge: zugegeben, da.ß sie vollständig von, der Flüssigkeit bedeckt sind. Nach Zugabe von. 3 g Dinatriumpyrophosphat (Naz H, P, O7) läßt man '/2 bis 1 Stunde bei Zimmertemp.e@ratur stehen und kocht dann bis zum Garwerden der Kartoffeln. Nach Abgießen des Wassers läßt man die Kartoffeln abdampfen..Examples 1. For 10 kg of peeled potatoes. so much water and common salt are added in the usual amount that they are completely covered by the liquid. After adding. 3 g of disodium pyrophosphate (Naz H, P, O 7 ) are left to stand for 2 to 1 hour at room temperature and then cooked until the potatoes are cooked. After the water has been drained off, the potatoes are allowed to evaporate.

Kartoffeln, die zur dunklen. Verfärbung neigen, und außer Kochsalz keinen Zusatz erhalten haben, verfärben sich nach einigen Stunden, sie verlieren ihre gelbe Farbe und werden unansehnlich grau. Die wie vorstehend beschrieben. behandelten Kartoffeln. behalten dagegen ihre helle Farbe.Potatoes that go to the dark. Tend to discolour, and except for table salt have not received any additive, they change color after a few hours, they lose their yellow color and become unsightly gray. The as described above. treated Potatoes. keep their light color.

Die wie, vorstehend erhaltene: Aufhellung der Kartoffeln ist eine bedeutend bessere als sie mit Genußsäuren, wie Weinsäure oder Citro:nensäure:, erbalten wird. Werden die Kartoffeln., wie es auch bereits vorgeschlagen wurde, zusätzlich, mit schwefliger Säure behandelt, so wirkt sich diese auch unangenehm auf den Geschmack der behandelten Kartoffeln aus.The lightening of the potatoes obtained as above is one Significantly better than those obtained with food acids such as tartaric acid or citric acid :, will. If the potatoes, as has also been suggested, additionally, Treated with sulphurous acid, this also has an unpleasant effect on the taste of the treated potatoes.

2. Man verfährt wie nach Beispiel 1, verwendet aber als Zusatz ein Gemisch von gleichen Teilen saurem Natriumpyrophosphat und hochpolymerem Na.triummetaphosphat.2. The procedure is as in Example 1, but an additive is used Mixture of equal parts of acid sodium pyrophosphate and high polymer sodium metaphosphate.

3. Kartoffeln werden mit einer Mischung von gleichenTeilenDina,triumpyrophosphat und Na-Citrat gemäß Beispiel 1 behandelt.3. Potatoes are mixed with equal parts dina, trium pyrophosphate and Na citrate treated according to Example 1.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verhinderung des Verfärbens von Kartoffeln unter Verwendung von Phosphaten, dadurch gekennzeichnet, daß man, diesen, insbesondere vor oder während ihrer Verarbeitung, oder dem bei ihrer Zubereitung zu verwendenden Wasser geringe Mengen in Wasser löslicher oder in Wasser löslich, gemachter polymerer Phosphate einzeln oder im Gemisch, unter sich und gegebenenfalls zusammen, mit anderen dem gleichen Zweck dienenden Stoffen, wie insbesondere Genußsäuren. oder deren Salzen, zusetzt. In Betracht gezogene Druckschriften: USA.-Patentschriften Nr. 2 620 277, 2 478 266; britische Patentschrift Nr. 603 294; Zeitschrift für Lebensmitteluntersuchung und Forschung, 1951, Heft 1, S. 72.PATENT CLAIM: Process for preventing the discoloration of potatoes using phosphates, characterized in that one, this, in particular before or during their processing, or that to be used during their preparation Water soluble in small amounts in water or soluble in water, made polymeric phosphates individually or in a mixture, among themselves and optionally together with other substances serving the same purpose, such as, in particular, food acids. or their salts. References Considered: U.S. Patents No. 2,620,277; 2,478,266; British Patent No. 603,294; Journal of Food Inspection and research, 1951, issue 1, p. 72.
DEB25919A 1953-06-06 1953-06-06 Method of preventing potatoes from discolouring Pending DE1019543B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB25919A DE1019543B (en) 1953-06-06 1953-06-06 Method of preventing potatoes from discolouring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB25919A DE1019543B (en) 1953-06-06 1953-06-06 Method of preventing potatoes from discolouring

Publications (1)

Publication Number Publication Date
DE1019543B true DE1019543B (en) 1957-11-14

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DEB25919A Pending DE1019543B (en) 1953-06-06 1953-06-06 Method of preventing potatoes from discolouring

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178685B (en) * 1961-04-29 1964-09-24 Georg Kruse Process for the production of ready-to-use preserves from fresh onions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB603294A (en) * 1945-03-06 1948-06-14 Harold Geoffrey Wager Improvements in or relating to the processing of fruit and vegetables
US2478266A (en) * 1945-06-26 1949-08-09 Hall Lab Inc Fruit and vegetable products and process of making same
US2620277A (en) * 1949-02-25 1952-12-02 Anthony Longo Preserving peeled white potatoes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB603294A (en) * 1945-03-06 1948-06-14 Harold Geoffrey Wager Improvements in or relating to the processing of fruit and vegetables
US2478266A (en) * 1945-06-26 1949-08-09 Hall Lab Inc Fruit and vegetable products and process of making same
US2620277A (en) * 1949-02-25 1952-12-02 Anthony Longo Preserving peeled white potatoes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178685B (en) * 1961-04-29 1964-09-24 Georg Kruse Process for the production of ready-to-use preserves from fresh onions

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