DD215694A1 - METHOD FOR OBTAINING GRANULATED PROTEIN CONCENTRATES FROM GREEN PLANTS - Google Patents

Abstract

Method for obtaining granulated protein concentrates from green plants, which is applicable in the agricultural, feed and food industry. The aim of the invention is to process the press juice or the protein suspension solution mixture obtained during the processing into granulates of higher utility value properties. The object of the invention is achieved by simultaneously drying, granulating and adding additives to the granules in a single stage of the process, without producing any dusts or causing thermal damage to the product. According to the invention, the object is achieved by adding the compressed juice or the protein suspension solution mixture together with 100 g powdery, granular, suspended, dissolved or molten additives, such as active ingredients, minerals, feed additives or food components and / or pharmaceuticals per kg dry matter of one of the two Starting products of a fluidized bed granulation drying is subjected to a maximum of 348 K fluidized bed temperature. The result is granule product with 0.1 to 30 mm with more than 80% by mass of dry matter content.

Description

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Title of the invention

Process for obtaining granulated protein concentrates from green plants

Applicant of the invention.

The economy .The invention is applicable in the L _a nd orbitals, feed und'Nahrungsgüterwirt, where green plants Proteinkon- '

, ¹ year. , _

Centrates can be produced as feed or for human nutrition · ^/:

Characteristic of the known technical solutions

For obtaining protein concentrates from green plants, methods are known which can be summarized essentially in the following process steps: 1 Mechanical separation by comminution of the green plants and thus destruction of their cell structure ₀ 2 Separation of the dissolved plant components from the cellulose by pressing, whereby a pressed juice and a press residue is produced as feed for ruminants. 3 · Coagulation of the pressed juice and separation of the coagulum

into a green, qtiark-like protein-suspension-solution-mixture and into a brown juice «

4o drying of the protein-suspending-solution mixture · 5. processing of the brown juice by thickening, fermentation USWe

,; - 2 «·

If, as a process stage for'the further processing of the compressed juice chosen an evaporation, which is expediently 'to avoid thermal damage to the product under vacuum conditions, so remain in the protein suspension solution mixture all soluble substances and a separate processing of brown juice is eliminated »Da in last described If sugar also remains in the protein-suspension-solution mixture, drying becomes more difficult. '· -....

According to the Hungarian VEPEX * or according to the American Pro-Xan method, the drying of both the protein-suspension ito-mixture and the brown juice takes place at 250-300 ° C. in a spray dryer in other conventional dryers Protein concentrate is partially pressed into pellets. "As a possibility, the method is used in the Pro-Xan method to form coagulum with 40% by mass of dry matter content and then to dry." In the known in practice, a coagulation of the pressed juice whose Separation into a brown juice and into a protein-suspension-solution mixture and the drainage of the latter in a drum dryer The granulation is carried out in a separate Verfahrensstufθ ο

According to DE-OS 28 32 883, the protein obtained from the pressed juice by • mechanical separation of the brown juice, suspension-solution mixture is spray-dried and according to DE-AS 14 92 865, the drying is optionally followed by a granulation and according to DE-OS 25 40 168 a vacuum drying with subsequent granulation is proposed ·

So far, a simultaneous drying and granulation of the pressed juice or the protein suspension solution mixture in only one process step is not known »The difficulty to granulation drying of the press juice or - realized in particular by evaporation - protein-suspension-Löaungsgemisches is mainly to be seen in the sugar content ₀

With none of the methods known hitherto, the complete avoidance of losses due to thermal decomposition has been achieved, since high temperatures occur both in the atomization and drum drying by the drying medium 250-300 ° G and the apparatus walls which locally lead to overheating of the product Furthermore, all previous methods for obtaining protein concentrates from Griinpflanzen are associated with the generation of annoying dusts that are technologically difficult to control in the production and transport envelope storage processes and during the feeding and their preparation,. .

A further disadvantage of these processes is that the introduction of additives, such as pharmaceuticals, active substances, mineral substances and additional feed or "food components of any initial consistency into which protein concentrates are not possible",

Aim of, invention

The aim of the invention is, in the recovery of protein.

from green plants to process the pressed juice or the protein suspension solution mixture into granules having higher utility properties, in which all ingredients of the pressed juice or the protein suspension mixture solution, including the dissolved remain lossless and in the additives, such as pharmaceuticals, drugs , Minerals and supplementary feed or »Lebehsmittelkomponenten of any initial consistency, can be introduced *

presentation; d We it s eps of the invention

The technical problem to be solved by the invention is to dry ₈ in the production of protein concentrates from green plants the pressed juice or the protein-suspension-solution mixture in a single process step at the same time to granulate and introduce additives in the granules without Dusts occur or thermal product damage occurs. Surprisingly, it has been found that with the aid of the fluidized bed granulation drying directly from the

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Pressed juice or granules dried from the protein-suspension-solution mixture can be prepared when granules containing granule surface moisture are present in the fresh juice or in the protein suspension mixture. tionsverhindernder components, .as sugar, additives, for example ₀ mineral mixture, are introduced into the fluidized bed '' The temperature of the fluidized bed shall not exceed · green plants with 10,348 K - * 25 mass% dry matter content out mechanical disruption followed by separation in a Press residue and a pressed juice containing 5 - 15% by mass of dry matter. By thermal or chemical-physical concentration of the pressed juice results in a protein suspension solution mixture with up to 75% by mass dry matter content, at a maximum 3 ^ 8 K vortex layer temperature v / ird the protein suspension solution mixture together with additives of any initial consistency such Active ingredients, minerals, feed additives or food components and pharmaceuticals, the amount of which is at most 1000 g per kg of dry matter content of the protein suspension solution mixture or _{0 of} the pressed juice, a fluidized bed granulation drying, preferably with klassatem granules deducted, subject The granulate product has, a size between 0.1 and 30 mm in diameter and a dry matter content greater than or equal to 80% by mass. The fine grain product discharged with the drying medium has a particle size of less than 0.1 mm in diameter and a dry subfetance content of greater than or equal to 80% by mass. The fine grain product is completely, partially or not at all returned to the fluidized bed.

It belongs to the invention, the compressed juice without concentration after addition of active ingredients, minerals, feed additives or food mixture and pharmaceuticals zuzuluhrstrocknung direktj here it is advantageous if the Wirbelschichtgranulationsstrocknung has a classifying granules deduction, since the dust-free production of a granular product it is supported » '

It is also according to the invention that the temperature of the fluidized bed can be adjusted without any local overheating at a maximum of 348 K, so that thermal damage to the product is excluded "The additives are homogeneously incorporated into the granules _P

Purpose of the report

The invention is explained in more detail below by means of exemplary embodiments.

1st example

Harvest-fresh alfalfa with 20% by mass dry matter content undergoes mechanical disruption in an apparatus operating according to the knife principle. The separation of the pressed juice from the press residue from the pulp resulting from the mechanical pulping takes place in a screw press the freshly harvested alfalfa, 50% by mass of pressed juice with a dry matter content of 9% by mass. The further use of the pressing residue is carried out in a known manner as feed for ruminants. A thermal concentration of the pressed juice in a vacuum evaporator leads to a protein-suspension-solution mixture containing 40% by mass of dry matter, in which in addition to the proteins also the dissolved alfalfa are contained * This still pumpable mixture is subjected together with 50 g of powdery feed lime, based on 1 kg of dry matter, a fluidized bed granulation drying, the temperature of the fluidized bed t is 338K. Produced is a granular product with intense dark green color and 3 - 7 ™ diameter, which is completely dust-free, as it is taken from the fluidized bed by means of a classifying-acting trigger · The entire in the cyclone separated fine grain product, which is 5% of the mass of the granular product, The composition of the granulated product consists of 63% by mass of crude protein, 1% by mass of mineral salts, 4% by mass of crude fat, 5% by mass of crude cellulose, 3% by mass of residual constituents and admissible water content "

2, example

Harvest-fresh clover with 22% by mass of dry matter content is mechanically disrupted. The subsequent separation of the pressed juice from the press residue from the pulp resulting from the digestion takes place in a screw press. This results in a pressed juice of 60% by mass with a dry substance content of 10 masses -% won. The pressed residue is further processed as feed "The pressed juice is coagulated" - chemically and physically concentrated, resulting in a quark-like protein-suspension-solution mixture with 50% by mass of dry matter content is formed in which in addition to the proteins and the solutes of the clover contained · are , This still pumpable mixture minerals 1; 20, based on the dry matter content, and then together subjected to a fluidized bed granulation drying, wherein the temperature in the fluidized bed is 330 K. "A granulated granulate of 5 to 1: 0 mm diameter with a dark green color in the composition 65% by mass is produced. % Crude protein, 15% by mass of mineral salts, 5% by mass of crude fat, 5% by mass of crude cellulose and residual constituents with admissible water content *

3 · example ^;

The incurred as a result of mechanical pulping and separation of pressed juice of green plants with 15 mass -%, Trοckensubstanzgehalt is without concentration after the addition of minerals and pharmaceuticals in the ratio 1: 20 is directly supplied to the Wirbelschichtgranuliertrocknung and treated ₀ 348 K at a maximum, wherein the granular product has a dry matter content of at least 90% and the granule size is 1 to 10 mm in diameter. The resulting fine-grained product is further processed. -

Claims (3)

Reward & save. ~. 1, Method for obtaining granulated protein concentrates from green plants, in which green plants with 10 - 25 mass% dry matter content are mechanically digested, with the resulting. Mixture then a compressed juice with 5 - 15% by mass of dry matter content is separated, characterized in that the pressed juice together with up to 1000 g of powdery, granular, suspended, dissolved or melted additives, such as active ingredients, minerals, feed additives or food components and / or Pharmaceuticals per kg of dry matter of the protein-suspension-solution mixture in a fluidized bed to a granular product of 0.1 - »30mm diameter with more than 80% by mass of dry matter content and a fine grain product with a diameter less than 0.01 mm with more than 80% by mass of dry matter content is granulate-dried and the puree product is returned to the fluidized bed, depending on the intended use, or further processed » 2 · Method for obtaining granulated protein concentrates from green plants, in which green plants with. 10 - mass% dry matter content 25 mechanically disrupted, wherein SEN from the thus formed mixture then a pressed juice with 5-15 M _a ~ is separated% dry solids content and coagulated, characterized in that the resulting after separation of the coagulated pressed juice protein Suspension mixed solution together with up to 1000 g of powdered, granular, suspended, dissolved or molten. Additives, such as active substances, minerals, supplementary feed or food components and / or pharmaceuticals, are dried in a fluidized bed in a fluidized bed, pup kg dry substance of the protein suspension / solvent mixture, 3 · Process for obtaining granulated protein concentrates from green plants, in which green plants with 10% by mass dry matter content are mechanically digested, wherein from the resulting mixture then a compressed juice with 5-15 mass% dry matter / content separated and thermally concentrated is characterized in that the resulting from the thermal concentration protein suspension solution mixture having a dry matter content of at most 75 mass% along with up to 1000 g of powdery, granular, suspended, dissolved or molten additives such as active ingredients, minerals, feed additives or Food components and / or pharmaceuticals per kg of dry matter of the protein-suspension-solution mixture in a fluidized bed is granule-dried "- '