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1. WO2020225512 - METHOD FOR PREPARING A HEAT-MODIFIED STARCH

Publication Number WO/2020/225512
Publication Date 12.11.2020
International Application No. PCT/FR2020/050754
International Filing Date 06.05.2020
IPC
C08B 30/12 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
30Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
12Degraded or non-chemically modified starch; Bleaching of starch
A23L 29/212 2016.01
AHUMAN NECESSITIES
23FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D91; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
29Foods or foodstuffs containing additives; Preparation or treatment thereof
20containing gelling or thickening agents
206of vegetable origin
212Starch; Modified starch; Starch derivatives, e.g. esters or ethers
C08L 3/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
02Starch; Degradation products thereof, e.g. dextrin
Applicants
  • ROQUETTE FRERES [FR]/[FR]
Inventors
  • QUETTIER, Claude
  • WIATZ, Vincent
  • BOCK, Solène
  • LEGRAND, Jacques
Agents
  • PLASSERAUD IP
Priority Data
19 0478707.05.2019FR
19 0733302.07.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR PREPARING A HEAT-MODIFIED STARCH
(FR) PROCÉDÉ DE PRÉPARATION D'UN AMIDON THERMIQUEMENT MODIFIÉ
Abstract
(EN)
The invention relates to a method for producing a heat-modified starch, comprising the steps consisting in: (i) preparing a starch milk having a solids content of between 20% and 45% by weight, preferably between 30% and 40% by weight and adding an alkaline agent at a weight concentration of between from 25% to 35% by weight, so as to obtain a final conductivity of between 4 and 7 mS/cm; (ii) filtering said starch milk so as to recover a starch cake having a moisture content of between 30% and 45% by weight and so that the conductivity of the filtered starch, resuspended at a solids content of 20% by weight, is between 0.7 and 2.5 mS/cm; (iii) introducing said starch cake, continuously, into a dryer at the same time as a continuous stream of hot air having a temperature of between 130°C and 185°C in order to recover a dried powder having a moisture content of between 8% and 18%; (iv) continuously supplying a turboreactor with the dried powder, the internal wall of the turboreactor being maintained at a temperature of between 180°C and 240°C, and by setting parameters for the speed of rotation of the stirrer in order to achieve a centrifugal acceleration of between 850 and 2100 m.s -2, so that said dried powder is continuously centrifuged and conveyed into said turboreactor for a total time of between 3 and 45 minutes; (v) recovering the heat-modified starch thus produced.
(FR)
L'invention est relative à un procédé de production d'un amidon thermiquement modifié comprenant les étapes consistant à : (i) préparer un lait d'amidon présentant une matière sèche comprise entre 20 et 45 % en poids, de préférence entre 30 et 40 % en poids et ajouter un agent alcalin à une concentration massique comprise entre 25 à 35 % en poids, de manière à obtenir une conductivité finale comprise entre 4 et 7 mS/cm; (ii) réaliser la filtration dudit lait d'amidon de manière à récupérer un gâteau d'amidon ayant une teneur en humidité comprise entre 30 et 45 % en poids et de manière à ce que la conductivité de l'amidon filtré et remis en suspension à 20% en poids de matière sèche soit comprise entre 0,7 et 2,5 mS/cm; (iii) introduire ledit gâteau d'amidon, en continu, dans un séchoir en même temps qu'un flux continu d'air chaud ayant une température comprise entre 130°C et 185°C afin de récupérer une poudre séchée ayant une teneur en humidité comprise entre 8% et 18%; (iv) alimenter en continu un turboréacteur avec la poudre séchée, la paroi interne du turboréacteur étant maintenue à une température comprise entre 180°C et 240°C, et en paramétrant la vitesse de rotation de l'agitateur afin d'atteindre une accélération centrifuge comprise entre 850 et 2100 m.s -2, de manière à ce que ladite poudre séchée soit continuellement centrifugée et acheminée dans ledit turboréacteur pendant une durée totale comprise entre 3 et 45 minutes; (v) récupérer l'amidon thermiquement modifié ainsi produit.
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