WO2023275039A1 - Formkörper oder beschichtung aus einer ballaststofffraktion aus macaubapulpe und verfahren zur herstellung der fraktion - Google Patents
Formkörper oder beschichtung aus einer ballaststofffraktion aus macaubapulpe und verfahren zur herstellung der fraktion Download PDFInfo
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- WO2023275039A1 WO2023275039A1 PCT/EP2022/067709 EP2022067709W WO2023275039A1 WO 2023275039 A1 WO2023275039 A1 WO 2023275039A1 EP 2022067709 W EP2022067709 W EP 2022067709W WO 2023275039 A1 WO2023275039 A1 WO 2023275039A1
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- Prior art keywords
- mass
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- water
- dietary fiber
- shaped body
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Links
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H8/00—Macromolecular compounds derived from lignocellulosic materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D197/00—Coating compositions based on lignin-containing materials
- C09D197/02—Lignocellulosic material, e.g. wood, straw or bagasse
Definitions
- the invention relates to shaped bodies or coatings that contain bio-based and largely or completely biodegradable polymeric materials made from components of Macauba pulp, and a method for producing the biopolymers.
- biopolymers based on carbohydrates such as cellulose or starch are known. Materials such as viscose, cellophane or celluloid can be obtained from cellulose, but large quantities of Chemicals, auxiliary materials and energy are required so that these materials cannot be described as sustainable.
- Starch polymers require large amounts of plasticizers due to their brittle structure in order to be used in flexible applications. However, these plasticizers are often undesirable for applications in contact with sensitive filling goods such as food, and they also lead to a change in the barrier properties of the respective biopolymer.
- Biopolymers produced by fermentation such as polylactic acid (PLA) or polyhydroxybutyrate (PHB), are also known. Both polymers of natural origin show good to very good biodegradability, but are sometimes very brittle in use and must be combined with additives such as plasticizers for flexible application, which can have a negative effect on the barrier properties.
- the object of the present invention was to provide moldings or coatings that contain biopolymers that can be used as a substitute for petroleum-based plastics such as packaging films or injection molded parts and avoid the existing disadvantages of the prior art. Furthermore, a method for producing these biopolymers is to be specified.
- the object is achieved by a shaped body or a coating that contains at least one dietary fiber preparation from Macauba pulp, and by a method for producing the preparation according to claims 1 and 18.
- Advantageous designs of the shaped body or the coating and the method are the subject of the dependent claims or can be found in the following description and the exemplary embodiments.
- the shaped body can be, for example, a foil, an injection molded part or a blown hollow body, and the coating can be, for example, a paint, a film or other configurations.
- the term "biopolymer film” is used, but the shaped body according to the invention can in principle have any shape and come from all primary shaping processes such as injection molding, extrusion, calendering, rotational molding, foaming, casting or blow molding.
- the dietary fiber preparation can be used as a monomaterial or as an additive a mixture of materials or as a coating on other materials.
- the dietary fiber preparation preferably forms the main component of the shaped body or the coating, ie is present in the shaped body or the coating in a proportion by volume or in a mass proportion of more than 50%.
- the proportion by mass of the dietary fiber preparation in the shaped body or the coating is particularly preferably at least 75% by mass.
- the percentages of the fractions or dietary fiber preparations of the biopolymer film originating from the Macauba pulp relate exclusively to the proportions of the corresponding component in the Macauba fraction and, with the exception of the water content, are given based on dry substance.
- Other components and additives in the biopolymer film such as fillers, colors, plasticizers, UV stabilizers, lubricants and others are not taken into account in the percentages, so unless explicitly stated otherwise, percentages are purely related to the respective Macauba ingredients.
- the dietary fiber concept is based on his comprehensive definition of CODEX Alimentarius as carbohydrate polymers that are not hydrolyzed by the endogenous enzymes in the human small intestine.
- the term dietary fiber in the present patent application refers mainly to plant cell wall polysaccharides (including cellulose, hemicelluloses, gum and pectins) and lignin, which are resistant to hydrolysis by digestive enzymes and are precipitated in aqueous ethanolic solutions with a concentration of the same concentration or higher than 78% (v/v).
- the fiber content is determined in the present patent application using the official method of the ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS (AOAC International), based on the gravimetric assay after digestion of the sample with digestive enzymes, in particular -amylase, protease and amyloglucosidase (reference method 991.43 of AOAC International ).
- alcohol-water-soluble substances are understood to be all compounds that are soluble in ethanol-water mixtures with a mass fraction of 80% ethanol at a temperature of 80.degree.
- these are in particular the plant's own sugars, including mono-, di- and oligosaccharides.
- the at least one dietary fiber preparation is characterized in that it contains less than 8% by mass of fat, better less than 5% by mass, advantageously less than 2% by mass, particularly advantageously less than 1% by mass and that its proportion of fiber is greater than 30% by mass, better greater than 35% by mass, even better greater than 40% by mass, advantageously greater than 50 % by mass or greater than 60% by mass, particularly advantageously greater than 70% by mass, better greater than 80% by mass, most preferably greater than 90% by mass.
- the biopolymer film exhibits particularly good color properties. This is either transparent or opaque and very light and has a lightness (L* value) of greater than 70, advantageously greater than 80, particularly advantageously greater than 90.
- the biopolymer film in order to achieve the required strength of the biopolymer film, it can be advantageous to significantly reduce the content of alcohol-water-soluble substances. According to the invention, this is done in absolute percentage points by mass at least to such an extent that the sum of alcohol-water-soluble substances and oil is below 61% by mass, advantageously below 55% by mass, particularly advantageously below 50% by mass.
- This increases the dietary fiber content to such an extent that a stable dietary fiber matrix can form in the biopolymer film, which is sufficient to give the biopolymer film sufficient strength for simple applications, for example as biodegradable agricultural film or as outer packaging for fruit.
- transparent biopolymer films can be produced from some particularly highly concentrated fiber fractions from Macauba pulp without the addition of plasticizers, which are very flexible, can be reversibly deformed and have a barrier, which enables them to be used, for example, as packaging films for food.
- the water-soluble dietary fiber fraction (1) from Macauba pulp is particularly well suited for this purpose, which preferably has a dietary fiber content of more than 70% by mass in the Macauba fraction after use of the method according to the invention (additives that may have been added to produce the film are not included).
- Macauba biopolymer films according to the invention can be particularly advantageous for applications that come into direct contact with food (packaging, food coatings and coverings for preserving freshness), since Macauba dietary fibers can be used as food ingredients and can therefore be used without an approval process for edible packaging or food coatings can be used.
- the pulp in addition to the water-soluble and transparent dietary fiber fraction, also contains other components which are not water-soluble and which can reduce the flexibility of the biopolymer film.
- the pulp also contains other components which are not water-soluble and which can reduce the flexibility of the biopolymer film.
- further additives such as plasticizers.
- this is applied as a coating to a composite containing paper or cardboard in order to achieve a smoother surface and an even coating, e.g. for applying further (e.g. inorganic) barrier layers.
- a proportion of 10% by mass of the dietary fiber or the Macauba fraction based on the total mass, consisting of the mass of the Macauba fraction plus the mass of paper/cardboard can have very advantageous smoothing effects the paper/cardboard surface.
- biopolymer film in order to achieve defined requirements for the biopolymer film, also necessary to add other additives to the biopolymer film in addition to the Macauba fraction, for example in order to increase the extensibility increase or to integrate a light filter into the film.
- additives for example, in order to increase the extensibility increase or to integrate a light filter into the film.
- These are advantageously selected from the group of biogenic raw materials.
- softeners these can be, for example, natural compounds such as glycerin, or secondary plant substances such as polyphenols, carotenoids, chlorophyll or others can be used as UV or light filters or stabilizers.
- plant substances such as insoluble fibers are preferably used in addition to inorganic components such as SiOx. The advantageous environmental neutrality of the biopolymer film is thus retained.
- the moist or dried components of the biopolymer film obtained from the Macauba pulp are mixed with water or dispersed in water before application. Direct processing of the fractions extracted with water (without intermediate removal of the water or drying) is also possible. Films are then cast and dried. It is also possible to mix the mixture of the Macauba pulp components with or without the addition of water or other flow agents using an extruder and to inject them into molds or form them into films and the water—if it is present—to separate off by evaporating or evaporating.
- the biopolymer film according to the invention contains at least one fraction of macauba pulp as a component or it consists entirely of at least one fraction of macauba pulp. This faction is described below.
- the fraction according to the invention can be dissolved or dispersed in water in any proportion. So he can Water content can vary between 99.9% by mass and 0.1% by mass, for use as a cast film, for example, it will be above 90% by mass, for safe storage of the fraction, a water content of less than 10% by mass is required. chosen.
- the Macauba fraction has a fat content in the dry matter of less than 8% by weight, better less than 5% by weight, advantageously less than 2% by weight, particularly advantageously less than 1% by weight.
- the proportion of roughage in the fraction is greater than 30% by mass, better greater than 35% by mass, even better greater than 40% by mass, advantageously greater than 50% by mass or greater than 60% by mass, particularly advantageously greater than 70% by mass, better greater than 80% by mass, best greater than 90% by mass.
- the content of alcohol-water-soluble substances is advantageously below 46% by mass to 53% by mass.
- the actual limits are the sum of the percentage of fat plus AWS.
- the Macauba fraction according to the invention will contain a total proportion of fat plus AWS which is less than 61% by mass, advantageously less than 55% by mass, particularly advantageously less than 50% by mass. This limit, which can easily be set in the process, results in a dietary fiber content that is sufficient to give the biopolymer film of the invention sufficient strength.
- the Macauba fraction used preferably has a peel content of less than 10% by weight, better still less than 5% by weight, preferably less than 2% by weight, based on the dry weight.
- the properties of the Macauba fraction for the formation of a flexible and tensile biopolymer film can be further improved if the particle size distribution of the Macauba particles contained is particularly fine before application as a biopolymer film, for example by grinding or homogenizing.
- the Macauba fraction can be processed and crosslinked particularly well if the particles present have a Dgo particle size of less than 1 mm (D90 value: 90% of the volume of the particles are less than 1 mm), better less than 500 gm, even better less than 250 gm, advantageously less than 100 gm, particularly advantageously less than 50 gm.
- Portions of an aqueous Macauba fraction in solution, such as sugar or other soluble components, are not recorded in this measurement. This particle size distribution makes it possible to make the thickness of the biopolymer film very low without solids leading to unevenness in the film.
- the Macauba fraction can be present in various compositions which have different processing properties. It turns out that the water-soluble component of the Macauba fraction can form particularly strong films. This makes it advantageous to produce them in isolation. This can be achieved by separating the residue into up to six further fractions after separating the oil and AWS from the Macauba pulp, thereby obtaining particularly functional Macauba fractions for the production of biopolymer films. These are: (1) a water-soluble fraction (soluble in water between 5 and 100°C) and a water-insoluble residual fraction (2). The faction (2) can be separated into a second soluble pectin fraction (3) and an insoluble fraction (4) using an alkaline and chelating extraction medium. For this, 0.05-0.1 mol/L NaOH or sodium carbonate is used to ensure a mild alkaline state and 0.5 mmol EDTA or CDTA or 0.5% (m/v)
- Fraction (4) can in turn be separated into a soluble hemicellulose fraction (5) and an insoluble cellulose-rich residue (6) using concentrated potassium hydroxide solution (1-4 mol/L), optionally with the addition of 10 to 50 mmol sodium borohydride will.
- fraction (1) is particularly transparent and very readily soluble in water and can be used as a base matrix for a polymeric film or a polymeric component, while the other fractions can be used advantageously as fillers with different barrier or strength properties.
- composition of fraction (1) is preferably as follows:
- proportion of water-soluble roughage from Macauba pulp greater than 50% by mass, better greater than 60% by mass, better greater than 70% by mass, advantageously greater than 80% by mass, particularly advantageously greater than 90% by mass;
- composition of fractions (2) to (6) can be characterized as follows:
- the method according to the invention for the production of the Macauba fraction (dietary fiber preparation) is described below.
- the method includes at least the following steps:
- the fat content of the full-fat pulp or the partially de-oiled pulp can vary depending on the plant species or harvest time, or they differ depending on the pre-treatment (e.g. pre-pressing, drying, flaking, mechanical pressing, other conventional vegetable oil extraction processes).
- Reduction of the content of alcohol-water-soluble substances in the Macauba fraction to values that lead to the sum of alcohol-water-soluble substances plus fat being less than 61% by mass, advantageously less than 55% by mass, particularly advantageously less than 50% by mass % is, with the help of a dry fractionation or by means of extractive methods.
- a grinding and classifying device can be used for dry fractionation. Solid-liquid extraction processes are used for the extraction (e.g. in the design as a mixing reactor, percolation, countercurrent extraction, etc.).
- solvents examples include hexane, ethanol, propanol, supercritical CO2 or other subcritical or supercritical solvents and other organic solvents.
- the alcohol used is preferably propanol or ethanol and a temperature between 50 and 90° C., advantageously between 50 and 70° C., particularly advantageously 60° C., so that the dissolving of alcohol-insoluble carbohydrates is largely avoided.
- the concentrate is optionally ground (cutting mill, ball mill, impact mill or jet mill) to a D90 volume particle size of less than 2 mm, advantageously less than 500 gm, better less than 250 gm, particularly advantageously less than 100 gm, or it is further processed unground.
- the material is then screened with screen opening diameters of 2 mm to 50 gm using 1 to 10 different screens.
- Wind classification can be carried out using various wind classification methods such as gravitational counterflow, gravitational crossflow, centrifugal counterflow and centrifugal crossflow.
- the water-soluble and water-insoluble fibers present in the dry state are separated into different fractions.
- the properties of these 6 fractions can be further improved mechanically in the case of drying after the drying step if the particle size distribution of the Macauba fraction is reduced to one by grinding with a cutter, impact, ball or impact mill in combination with the use of sieves and sieve inserts specific area is set.
- the proportion of solvents has to be reduced.
- Temperatures of 25 to 120° C. are used here, preferably greater than 80° C., advantageously greater than 100° C., and pressures of less than 1 bar, advantageously less than 500 mbar, particularly advantageously less than 200 mbar.
- Macauba fractions that still contain a small proportion of solvents such as hexane or alcohol show advantages in terms of solubility and other functional properties compared to solvent-free preparations.
- the preparation therefore contains organic solvents in the range from 1 to 8000 ppm, advantageously between 10 and 100 ppm.
- the full-fat or partially de-oiled pulp can be made available.
- the Macauba fruits After the Macauba fruits have ripened, they are advantageously separated from the fruit group without applying great force, preferably at different times depending on the degree of ripeness. With an isolated harvest of individual fruits from the fruit clusters, both the quality of the oil and that of the pulp are at their best. It is also possible to cut the fruit clusters off the palm as a whole. Then the falling cluster of fruit should advantageously be caught softly, for example by means of a soft film or a soft net or another system for gently slowing down the fall to avoid damaging the outer shell.
- the fruit Before further mechanical processing of the fruit, the fruit should advantageously be thermally treated on the surface, to a surface temperature of over 70 °C, advantageously over 75 °C, particularly advantageously over 80 °C for at least 1 minute (definition of the duration: from reaching the maximum temperature until the temperature drops below 65° C.), advantageously longer than 10 minutes or 20 minutes, particularly advantageously longer than 30 minutes.
- the water content of the outer husk should advantageously be reduced to a value of less than 20% by mass, advantageously less than 10% by mass, in order to make peeling efficient and to reduce the proportion of pulp in the husk fraction.
- Any known form of drying can be used here. The person skilled in the art will be able to select the appropriate method from the variety of drying methods, depending on the desired quality of the oil and the intended speed of drying - from drying in the open air or in the sun, in a ventilated or unventilated hall or a simple forced air dryer, Contact and convection dryers through to vacuum drying.
- the exocarp After drying and possible interim storage, the exocarp is peeled on a state-of-the-art peeling unit. It is important to ensure that the choice of parameters means that fewer than 20 % by mass of pulp in the exocarp fraction remains, advantageously less than 10% by mass, particularly advantageously less than 5% by mass, based on the mass of the shell fraction. If this cannot be achieved in one run, a subsequent separation step between epicarp and pulp should be provided.
- the peeling As a result of the peeling, it must also be ensured that after peeling there are no peels or only small amounts of peels in the pulp fraction.
- the peeling should therefore be carried out in such a way that the separated pulp has a peel content of less than 10%, better less than 5%, preferably less than 2% by mass, based on the dry matter.
- the specialist in the field of fractionating vegetable raw materials will be able to select the appropriate aggregates and process parameters for this separation task.
- the pulp is separated from the inner hard shell of the stone fruit stone, the endocarp.
- This can be done with cutting mills or other units known to those skilled in the art.
- this process is advantageously designed for the preparations according to the invention in such a way that the proportion of pieces from the black endocarp in the pulp is less than 3% by mass, advantageously less than 1% by mass, particularly advantageously less than 0.1% by mass. %.
- the pulp obtained in this way is fed to the process according to the invention.
- a further pre-treatment can consist of a partial de-oiling. Due to the special separation of parts of the endocarp from the pulp, the oils obtained mechanically or extractively have a particularly low proportion of lignin or other phenolic components, so that the taste of the oil becomes more neutral.
- the mechanical de-oiling is carried out by drying to values of less than 30% by mass, better less than 20% by mass, advantageously less than 15% by mass, particularly advantageously less than 10% by mass, advantageously in a continuously operating press, for example a screw press, an extruder or another mechanical pressing device.
- the oil content is advantageously reduced to less than 30% by mass, particularly advantageously less than 20% by mass, or less than 15% by mass.
- Particularly advantageous techno-functional properties of the dietary fiber preparations according to the invention are obtained if the oil content after mechanical de-oiling is between 15 and 25% by mass, since thermal damage due to excessive friction is avoided.
- the dietary fiber content is defined as the content derived from the gravimetric determination method after enzymatic digestion of the sample (AOAC method 991.43) [2].
- the protein content is defined as the content calculated by determining the nitrogen in a sample and multiplying the determined value by a factor of 6.25. In the present patent application, the protein content is given as a percentage based on the dry matter (TS). Reference methods for determining the protein content are the Dumas combustion method [3] and the Kjeldahl digestion method [4].
- the perceptible color is defined using CIE-L*a*b* color measurement (cf. DIN 6417).
- the L*-axis indicates the lightness, with black as 0 and white as 100 the a*-axis describes the green or red component and the b*-axis describes the blue or yellow component.
- the particle size of the sample must have a D90 value below 100 gm.
- the fat content is determined gravimetrically using the Sohxlet method [5] (AOAC method 920.39).
- the water content is determined gravimetrically according to ⁇ 64 LFGB methods [6] at 105 ° C to constant weight.
- the content of substances soluble in alcohol and water is determined gravimetrically as follows:
- the sample (Macauba fraction) is dispersed in aqueous ethanol 80% (v/v) in a solid/liquid ratio of 1:10 (m/v).
- the dispersion is kept at boiling temperature (about 80° C.) for 60 minutes with gentle stirring.
- the mixture is then centrifuged (3300 g, 20 min, 20 oC) and filtered, and the supernatant (liquid phase) is saved.
- the solid pellet is extracted with 80% aqueous ethanol under conditions similar to those described above until a clear extract is obtained (at least 5 extraction cycles). After completion of the extraction cycles, the liquid extracts are combined, the ethanol is distilled and the water is evaporated at 105 °C overnight.
- the amount of solids remaining after drying is weighed and reported as a % of the amount of sample subjected to extraction at the beginning of the analysis.
- FIGS. 4 and 5 show, by way of example, two variants for the production of the dietary fiber preparations used as a biopolymer, the steps for preparing the pulp also being shown in these examples.
- the film-forming property of the water-extracted water-soluble fraction (1) was qualitatively evaluated. For this purpose, 20 g of a 2.5% aqueous solution of the water-soluble fraction without the addition of plasticizers were poured into a Petri dish (diameter 9 cm). The solution was then dried overnight at 25°C in an air-circulating oven. The film obtained was easily removable from the petri dish and reversibly moldable, as can be seen from FIG. The water-soluble film showed good flexible properties and a particularly high tensile strength without significant elongation, also because no plasticizer or crosslinking agent was used.
- the film-forming property of the dietary fiber preparation was evaluated.
- the preparation had a dietary fiber content of 40.5%, a fat content of 3% and an AWS content of 35%.
- 30 g of a 1.5% (m/v) aqueous solution of the dietary fiber preparation mixed with 0.5% (m/v) glycerol were poured into a Petri dish (diameter 9 cm). The solution was then dried in a forced air oven at 25°C overnight. The resulting film could be easily removed from the petri dish and reversibly deformed, as can be seen in FIG.
- the water-soluble film showed good flexible properties and a particularly high tensile strength without significant elongation, but the films were less transparent than those in Example 1 featured .
- the film-forming property of the dietary fiber preparation was evaluated.
- the preparation had a dietary fiber content of 80.5%, a fat content of less than 0.5% and an AWS content of 10%.
- the film-forming property of the water-extracted water-soluble fraction (1) was evaluated by extrusion. For this purpose, 55% of the water-soluble fraction (1) was mixed with 20% water and 25% glycerol and stored overnight for equilibration. The film was extruded in a twin-screw extruder at temperatures of 45, 120,
- the film was extruded at a screw speed of 50 rpm and made into sheets.
- the films were formed using a 100 mm wide ribbon die and then passed through a film take-off device.
- the film obtained had a thickness of 0.5 mm, good mechanical resistance and satisfactory oxygen barrier properties.
- the thermoplastic properties of the Dietary fiber preparations have been evaluated for the production of biodegradable bioplastics.
- the dietary fiber preparation had a dietary fiber content of 70.5%, a fat content of less than 0.5% and an AWS content of 20%.
- the composite was formulated with 70% of the fiber preparation, 18% glycerin and 12% water.
- the fiber preparation was mixed with glycerin at high speed (2500 rpm) for 5 minutes. Water was then added and mixed for a further 5 minutes.
- the mixture was extruded with a single-screw extruder to obtain dietary fiber pellets (granulated material). The pellets were equilibrated at 65% relative humidity for 5 days.
- Cylindrical specimens were molded using an injection molding machine with a clamping force of 50 tons.
- the injection molding took place at a screw barrel temperature of 120 °C, a mold temperature of 15 °C and an injection pressure of 1500 bar.
- the holding pressure and the holding time were 1000 bar and 30 s, respectively.
- the cylindrical samples obtained had good mechanical properties.
- the water-soluble fraction (1) was combined with polylactic acid (PLA) to produce composite films.
- PLA polylactic acid
- Part A polyethylene glycol
- Part B 65% of the water-soluble fraction (1) was mixed with 25% glycerol and 10% water
- Example 7 The water-soluble fraction (1) was used for paper coating.
- a 5% solution of the water-soluble fraction (1) in demineralized water (50° C.) was prepared with constant stirring (500 rpm). After complete dissolution, the solution was cooled to room temperature.
- the paper substrate consisted of 100% primary fibers (mixture of deciduous and softwood) with a grammage of 70 g/m2, a thickness of 95 gm and a sheet density of 0.75 g/cm3. Coating was carried out using a laboratory draw-down coater with a target line weight of 5 g/m2 (one-sided application). Two layers of the coating solution were applied to the paper substrate. The coater speed was 5 m/min and the wet film thickness for the first and second layers was 50 gm. The coated paper samples were dried with hot air at 150°C for 60 s. Coating with the water-soluble fraction (1) improved the
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Abstract
Description
Claims
Priority Applications (2)
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EP22741710.2A EP4363489A1 (de) | 2021-06-30 | 2022-06-28 | Formkörper oder beschichtung aus einer ballaststofffraktion aus macaubapulpe und verfahren zur herstellung der fraktion |
KR1020237044351A KR20240037885A (ko) | 2021-06-30 | 2022-06-28 | 마카우바 펄프로부터의 식이 섬유 분획물로 이루어진 성형물 또는 코팅 및 상기 분획물의 제조 방법 |
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DE102021116923.2A DE102021116923A1 (de) | 2021-06-30 | 2021-06-30 | Formkörper oder Beschichtung aus einer Ballaststofffraktion aus Macaubapulpe und Verfahren zur Herstellung der Fraktion |
DE102021116923.2 | 2021-06-30 |
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EP (1) | EP4363489A1 (de) |
KR (1) | KR20240037885A (de) |
AR (1) | AR126278A1 (de) |
DE (1) | DE102021116923A1 (de) |
WO (1) | WO2023275039A1 (de) |
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- 2022-06-28 EP EP22741710.2A patent/EP4363489A1/de active Pending
- 2022-06-28 WO PCT/EP2022/067709 patent/WO2023275039A1/de active Application Filing
- 2022-06-29 AR ARP220101707A patent/AR126278A1/es unknown
Non-Patent Citations (5)
Title |
---|
"German Food Act.", 1980, BEUTH VERLAG GMBH |
"Method", vol. 991, 1990, AOAC INTERNATIONAL, article "Total dietary fiber. Enzymatic-gravimetric method. In Official methods of analysis of the association of official analytical chemists", pages: 109 |
MICHELLE CARDOSO COIMBRA ET AL: "Proximate composition of guariroba (), jerivá () and macaúba () palm fruits", FOOD RESEARCH INTERNATIONAL, ELSEVIER, AMSTERDAM, NL, vol. 44, no. 7, 12 March 2011 (2011-03-12), pages 2139 - 2142, XP028098973, ISSN: 0963-9969, [retrieved on 20110321], DOI: 10.1016/J.FOODRES.2011.03.032 * |
OLIVEIRA DA SILVA ALESSANDRA ET AL: "Development and characterization of biopolymer films based on bocaiuva (Acromonia aculeata) flour", INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, vol. 155, 1 July 2020 (2020-07-01), NL, pages 1157 - 1168, XP055969732, ISSN: 0141-8130, DOI: 10.1016/j.ijbiomac.2019.11.083 * |
SILVA AOCORTEZ-VERGA WRPRENTICE CFONSECA GG: "Development and characterization of biopolymer films based on bocaiuva (Acrocomia aculeata) flour", INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, vol. 155, 2020, pages 1157 - 1168 |
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EP4363489A1 (de) | 2024-05-08 |
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