EP1247579A1 - Verfahren zur Gewinnung von Hart-Weizenkeimen und Anlage zur Ausführung des Verfahrens - Google Patents

Verfahren zur Gewinnung von Hart-Weizenkeimen und Anlage zur Ausführung des Verfahrens Download PDF

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Publication number
EP1247579A1
EP1247579A1 EP02356064A EP02356064A EP1247579A1 EP 1247579 A1 EP1247579 A1 EP 1247579A1 EP 02356064 A EP02356064 A EP 02356064A EP 02356064 A EP02356064 A EP 02356064A EP 1247579 A1 EP1247579 A1 EP 1247579A1
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Prior art keywords
separation
fraction
germs
mass
germ
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EP02356064A
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English (en)
French (fr)
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EP1247579B1 (de
Inventor
Yves Mario Cameli
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Panzani SAS
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Panzani SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B5/00—Grain treatment not otherwise provided for
    • B02B5/02—Combined processes

Definitions

  • the present invention relates to the general technical field of processes, installations and devices used and implemented in the food industry, and for example in flour or semolina, to extract or separate grains, products or parts of grains from harvested plants, including cereals.
  • the present invention relates to a method and an installation for extracting durum wheat germ in its natural state, i.e. not having undergone prior to its extraction, no operation or step of conditioning, processing or preservation, the durum wheat germ and the mass harvested cereals therefore in its physico-chemical state natural.
  • durum wheat This is the reason why the techniques known to date in terms of of undifferentiated germs or fractions from durum wheat all involve a preconditioning of durum wheat, namely a phase humidification, specifically to try to resolve the natural tendency to fragment durum wheat.
  • a technique known extraction from durum wheat consists, after dry cleaning of the mass to be treated, to condition the mass to be treated with a supply of water preceding a stage of transformation and separation of wheat, germ and waste through a series of successive stages including grinding, sieving and purification or sassage.
  • the object of the invention therefore aims to remedy the various disadvantages listed above, and to propose a new process and a new germ extraction facility that provides durum wheat germ of which all the initial organoleptic qualities are preserved, while being simple and easy to implement on the plan industrial.
  • Another object of the invention is to propose a new method and a new extraction facility that can supply using simple means an acceptable yield from the extraction operation of the durum wheat germ.
  • Another object of the invention is to propose a new method and a new extraction system that can be used without notable modification of conventional separation and cleaning units in the field.
  • the objects assigned to the invention are achieved using a process extraction in its natural state of the durum wheat germ in which, from of a mass of harvested cereals containing a heterogeneous mixture of grains, germs and waste or impurities, successively and gradually separating the germ to recover it, said process being produced by a series of exclusively mechanical extraction steps and by dry process, without external liquid supply.
  • the process for extracting the durum wheat germ according to the invention is a process to be applied to masses of wheat from varieties durum wheat, the mass of grain harvested and processed in the process according to the invention having prior to its treatment undergone absolutely no treatment or conditioning likely to modify its initial organoleptic qualities.
  • the mass of cereals to be treated is therefore in its state initial native close to that of the harvest, the mass of cereals being in a composition close to that obtained after passing through the machine of harvest (combine), and comprising mainly in mixes the wheat grains associated with the germ and waste, dust sounds, in different quantity, shape and configuration.
  • the mass of cereals to process is extracted from storage silos and presents for example a average humidity between 10 and 14%.
  • a grain of durum wheat is formed by a set unit comprising the grain or the seed 1 within which the germ 2 is integrated, the grain and the seed possibly still being in certain cases surrounded by vegetable wrap.
  • the object of the invention therefore aims precisely to separate or extract the germ 2 of the seed part, then to recover the germs without them having been modified, the germ therefore remaining in an initial state close to, or even identical to, its natural state.
  • Figure 1 illustrates, in the form of a schematic diagram, the different essential stages of the durum wheat germ extraction process in its natural state according to the invention.
  • the extraction process according to the invention is a process in which, from a mass of durum wheat harvested and containing a mixture heterogeneous of grains, germs and waste or impurities of all kinds (bran, dust, stones, straw or any kind of straw, etc.), we ensure successively and gradually the separation of the germ for the recover, said process being carried out by a series of extraction steps exclusively mechanical and dry, without external supply of liquid or fluid and / or without chemical treatment steps in particular.
  • the process according to the invention therefore differs radically from the technique known anterior extraction of durum wheat germ, which consists precisely to use a grain and germ humidification phase to precisely ensure at least their cleaning.
  • the method according to the invention comprises a first step cleaning the mass of durum wheat to rid it of at least one significant part of its waste and impurities of similar or identical size the size of the durum wheat germ to be harvested, in order to obtain a fraction of durum wheat cleaned.
  • Such a step is intended to separate, from the start of the extraction cycle, particles the same size as or close to that of wheat germ, because such separation proves to be extremely difficult in practice at a stage later in the process, the germ to be separated remaining at this stage of the first stage of cleaning, still integrated in or with the almond or the seed.
  • FIG. 1 a cleaning unit 3 of the durum wheat mass has been indicated. harvested able to perform this first step.
  • Cleaning unit 3 can be made up of machines working according to different physical principles (difference in sizes, density, ...), this unit being supplied with permanently by Archimedes screws connected to the storage silo (not represented).
  • This cleaning unit 3 can comprise at least one cleaning machine screening and a densimetric separation machine.
  • the extraction process then comprises a first mechanical separation step to obtain a fraction of fine products containing the germ mixed with seeds and dust or residual waste.
  • This first step of mechanical separation advantageously consists in pass the mass of wheat 4 through one or more hullers 5A forming a first mechanical separation unit 5.
  • This unit 5 will advantageously include at least one huller 5A to ensure the mechanical separation of the germ from the kernel.
  • Such machines are well known and include a rotor arranged horizontally on which the mass of cereals is directed substantially tangentially. Intensive mixing of the cereal layer on the rotor allows to produce a friction of the grains between them, a friction to the beater and a friction to the shelling coat, the refusal is directed on a channel suction.
  • the grid of the sheller 5A will have advantageously a mesh of approximately 1.3 mm and will be provided with elements protrusions forming asperities to cause or promote tearing.
  • the horizontal huller is equipped with a grid provided with perforations of approximately 1.3 mm.
  • the first separation step is to pass the mass of durum wheat cleaned on and through a rack, to separate germs from grains by uprooting and recovering the fraction of fine products by passage through the grid mesh.
  • the working face of the fixed grid will be arranged at inside towards the rotor.
  • a fraction of fine product 7 containing germs mixed with seeds and dust or residual waste is already recovered from each 5A unit to be further processed in the extraction process according to the invention at during a next step forming a second separation step mechanical.
  • This step consists in starting from the fraction of fine products 7 to separate a fraction containing the germs of the mass of processed cereals.
  • the process according to the invention therefore comprises a second separation step, preferably mechanical, the mass of fine products 7 in a fraction of grains, and a fraction of germs mixed with waste and dust residual.
  • This fraction of the product 7 is treated by an air recycling port 8 to separate components of low specific gravity in the grain products.
  • This equipment is obviously placed downstream of the horizontal sheller 5A of the first mechanical separation unit 5.
  • This second mechanical separation step is therefore preferably a densimetric separation step.
  • the extraction process according to the invention continues from the mass of fine products 10 and fraction 6 by a third step of mechanical separation as illustrated in figure 1 and carried out in a unit 12 forming a third mechanical separation unit.
  • This unit of separation 12 preferably uses a small plansichter 13 (rotostar) comprising as is well known to those skilled in the art, a battery successive of superimposed sieves and nested in each other allowing from an input mass to obtain an extraction mass 15 and one or more refusal masses 14.
  • This step therefore consists in passing the fraction of germs mixed with waste and dust on a double sieve sieve system for recover the intermediate particle size fraction containing the germ.
  • the refusal mass 14 will be formed by the fraction of germs mixed with waste while the mass of the refusal to the extraction 15 will be formed by seeds or other products and residual dust.
  • the plansichter 13 comprises sieves of the order of 1000 ⁇ m and sieves of the order of 630 ⁇ m to recover the fraction intermediate containing the germs (fraction between 1000 ⁇ m and 630 ⁇ m) and eliminate the other fractions.
  • the fraction of the refuse mass 14 is stored in a silo 16 before being subject to a final stage of purification and separation carried out within of the installation for implementing the extraction process by at least one purification unit 20 making it possible to carry out the final purification as illustrated in the FIG. 2, the purification unit 20 comprising at least one sander 20A and preferably two successive sasseurs.
  • the final purification step therefore consists in passing the fraction intermediate 14 corresponding to the mass of refusal on at least one sasser 20A to recover clean germs
  • the material used can be a classic semolina sander consisting for example of two groups parallel formed each of three layers of superimposed horizontal screens, each layer comprising for example four sieves.
  • Part or even all of the refusals 21 from the sander 20A can be recycled in the sasser to increase the final yield of extraction.
  • the yield of the extraction process described above allows recover between 0.1 and 0.8% among the 1.5% (on average) forming the proportion of germs in the average weight of a grain of wheat. On average, we recover between 0.1 and 0.3% of wheat germs among the 1.5% theoretically recoverable by total weight of wheat.
  • the installation method according to the invention thus makes it possible to obtain a wheat germ which is naturally stabilized, since only operations successive mechanicals are used, the mass of wheat treated and the germ contained not undergoing any prior treatment during process, in particular thermal, likely to degrade its composition.
  • the durum wheat germ thus obtained has an identical final composition or substantially identical to its initial composition, which allows it to keep all of its biochemical properties and keep in particular all of its organoleptic properties.
  • durum wheat germ obtained can thus be stored at temperature ambient for several months without significant modification.
  • Wheat germ hard obtained has a low starch content (less than 10%), a high protein content (over 35%) and a high lipid content (about 15%).

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  • Cereal-Derived Products (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
EP20020356064 2001-04-04 2002-04-04 Verfahren zur Gewinnung von Hart-Weizenkeimen und Anlage zur Ausführung des Verfahrens Expired - Lifetime EP1247579B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0104591 2001-04-04
FR0104591A FR2823074B1 (fr) 2001-04-04 2001-04-04 Procede d'extraction du germe de ble dur et installation de mise en oeuvre

Publications (2)

Publication Number Publication Date
EP1247579A1 true EP1247579A1 (de) 2002-10-09
EP1247579B1 EP1247579B1 (de) 2010-03-31

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ID=8861942

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EP20020356064 Expired - Lifetime EP1247579B1 (de) 2001-04-04 2002-04-04 Verfahren zur Gewinnung von Hart-Weizenkeimen und Anlage zur Ausführung des Verfahrens

Country Status (4)

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EP (1) EP1247579B1 (de)
DE (1) DE60235783D1 (de)
ES (1) ES2343566T3 (de)
FR (1) FR2823074B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114433299A (zh) * 2022-02-18 2022-05-06 河南华泰粮油机械股份有限公司 一种大型大豆加工厂高效提取胚芽生产工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1334115A (fr) * 1961-09-19 1963-08-02 Ocrim Spa Procédé pour l'extraction du germe de grains de maïs ou autres
FR2404467A1 (fr) * 1977-09-30 1979-04-27 Buehler Ag Geb Procede de degermination du mais et dispositif pour sa mise en oeuvre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1334115A (fr) * 1961-09-19 1963-08-02 Ocrim Spa Procédé pour l'extraction du germe de grains de maïs ou autres
FR2404467A1 (fr) * 1977-09-30 1979-04-27 Buehler Ag Geb Procede de degermination du mais et dispositif pour sa mise en oeuvre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114433299A (zh) * 2022-02-18 2022-05-06 河南华泰粮油机械股份有限公司 一种大型大豆加工厂高效提取胚芽生产工艺
CN114433299B (zh) * 2022-02-18 2023-05-12 河南华泰粮油机械股份有限公司 一种大型大豆加工厂高效提取胚芽生产工艺

Also Published As

Publication number Publication date
ES2343566T3 (es) 2010-08-04
DE60235783D1 (de) 2010-05-12
EP1247579B1 (de) 2010-03-31
FR2823074B1 (fr) 2004-04-16
FR2823074A1 (fr) 2002-10-11

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