摘要:
A composition for coating a cellulosic packaging material, according to the invention containing the biodegradable materials such as starch, glycerol, which is characterized by being a two-component mixture, wherein the first component comprises a mixture of starch, gelatine and glycerol or a mixture of glycerol and sorbitol, while the second component comprises a mixture of protein ingredients, the porophors and optionally starch. The amount of particular ingredients in the components is such that after the dissolution of both components in water, it permits to obtain a composition with the concentration of starch in the range of 10-17 wt%, gelatine concentration in the range of 10-12 wt% glycerol or a mixture of glycerol and sorbitol in the range of 5-11 wt%, the protein components concentration in the range of 5-10 wt% and the porophors concentration in the range of 3-5.5 wt%. A method for preparing a composition for coating a cellulosic packaging material according to the invention, comprising a mixing of the biodegradable materials such as starch, glycerol, subjecting thereof to the thermal treatment, which is characterized in that, gelatine, glycerol or a mixture of glycerol and sorbitol and starch are dispersed in water using a mechanical stirrer, then said mixture is heated to a temperature in the range of 50-100° C until a uniform consistency is achieved. Subsequently, the mixture is cooled down to a temperature in the range from 35 to 40°C with continuous stirring followed by adding the protein components and the porophors. A heat-insulating packaging material, in particular for the food products according to the invention, containing a cellulosic material coated by a layer of foamable coating which is characterized by that said material has a least one layer of a foamable coating obtained from aforementioned composition coated on the cellulosic material. A method for preparing a heat insulating packaging material, according to the invention, containing a layer of foamable coating which comprises a coating of cellulosic material by a coating from the biodegradable materials, drying and foaming, which is characterized by that, the cellulosic material is a one-side coated by at least one layer of the composition obtained by the aforementioned method. The material is then preliminary dried and subjected to foaming with the application of known heating methods ensuring a uniform heating.
摘要:
A method for the preparation of a starch material, according to the present invention, rely on the thermal treatment of the starch with the use of polar organic solvents, is characterized by that 5÷95% by weight of starch is mixed with an aqueous solution of polar organic solvents at a concentration of 1÷85% by weight, which is eventually a 0.01÷10 wt% emulsifier solution with HLB 8÷20 and is eventually mixed with 5÷95% by weight a 0.01÷10 wt% emulsifier solution with HLB 4÷20 in a non-polar solvent, to achieve 100% by weight of the starch mixture. The mixture is then subjected to the thermal treatment in the temperature range of 60÷220°C over a period of 1 second to 120 minutes with continuous stirring, subsequently the starch mixture is dried. After thermal treatment, the starch mixture may be subjected to texturizing relying on the addition of polar organic solvents or its aqueous solution at a temperature from -20 to +80°C in the concentration range of 30÷85% by weight to the starch mixture. The starch mixture is then concentrated followed by dehydration using lyophilisation or by washing on a filtration device by means of rinsing with polar organic solvent to obtain a 5÷50% by weight residue of polar solvent and/or its aqueous solution and is eventually dried.
摘要:
A method for producing microcapsules, according to the invention, comprising of polyelectrolyte complex formation by introducing an aqueous solution of carrageenan or carrageenan hydrogel microcapsules to an aqueous solution of a cationic polymer containing quaternary amine groups, characterized in that the polymer with cationic character, containing quaternary amino groups, is poly(2-hydroxypropyl dimethyl ammonium chloride) and/or poly[oxyethylene(dimethylimino) ethylene(dimethylimino) ethylene dichloride].
摘要:
A bioactive modifier of packaged food atmosphere, according to the present invention, containing yeast and nutrient for the yeast, which is characterized by that in contains 12 -25% by weight of a formulation containing 0.1-1 billions units/1 gram of bacteria Lactobacillus plantarum, 30-60% by weight of yeast, 2-20% by weight of sugar and 5-40% by weight of an activator of yeast and bacteria growth.
摘要:
Agent for removing dissolved phosphorus compounds from water according to the invention, containing a biopolymer and metal compound, is characterized by being in the form of spherical capsules which comprise the biopolymer or derivatives thereof with the ionic character crosslinked in the presence of at least one water-soluble polyvalent metal compounds
摘要:
A method for producing microcapsules, according to the invention, comprising of polyelectrolyte complex formation by introducing an aqueous solution of carrageenan or carrageenan hydrogel microcapsules to an aqueous solution of a cationic polymer containing quaternary amine groups, characterized in that the polymer with cationic character, containing quaternary amino groups, is poly(2-hydroxypropyl dimethyl ammonium chloride) and/or poly[oxyethylene(dimethylimino) ethylene(dimethylimino) ethylene dichloride].
摘要:
A package, according to the present invention, performed from film or laminated paper containing a bioactive atmosphere modifier (2) of packaged food and permeable to the gases generated by the modifier (2), is characterized by that, said package contains it at least one chamber (1) in the form of uniform or welding sleeve. In the chamber (1) is located a bioactive atmosphere modifier (2) of packaged food and an odour absorbent (3). The package has an intermittent weld (4) on at least one side. Both atmosphere modifier (2) and odour absorbent (3) can be located in the separate pockets made from a hydrophilic nonwoven fabric (5).
摘要:
A method for the producing of an agent for the removal of dissolved phosphorus compounds from water, according to the present invention, relying on the formation of the biopolymer metal compound system which is characterized by that, the natural plant fibres are subjected to the activation, subsequently the activated natural plant fibres are coated with biopolymer or derivatives thereof with the ionic character. The natural plant fibres are coated with at least one water-soluble polyvalent metal compound before or after coating the natural plant fibres with biopolymer or derivatives thereof with the ionic character. Such modified natural plant fibres are then rinsed and dried to obtain a composite fibrous material in the form of biopolymer hydrogel support crosslinked in the presence of water-soluble polyvalent metal compound support on the warp from natural fibre. An agent for the removal of dissolved phosphorus compounds from water, according to the present invention, containing the biopolymer and metal compounds which is characterized by that, said agent has the form of composite fibrous material, which are the hydrogel supports on the warp from natural fibre, wherein the hydrogel support constitutes biopolymer or derivatives thereof with the ionic character crosslinked in the presence of at least one water-soluble polyvalent metal compound.
摘要:
A composition for coating a cellulosic packaging material, according to the invention containing the biodegradable materials such as starch, glycerol, which is characterized by being a two-component mixture, wherein the first component comprises a mixture of starch, gelatine and glycerol or a mixture of glycerol and sorbitol, while the second component comprises a mixture of protein ingredients, the porophors and optionally starch. The amount of particular ingredients in the components is such that after the dissolution of both components in water, it permits to obtain a composition with the concentration of starch in the range of 10-17 wt%, gelatine concentration in the range of 10-12 wt% glycerol or a mixture of glycerol and sorbitol in the range of 5-11 wt%, the protein components concentration in the range of 5-10 wt% and the porophors concentration in the range of 3-5.5 wt%. A method for preparing a composition for coating a cellulosic packaging material according to the invention, comprising a mixing of the biodegradable materials such as starch, glycerol, subjecting thereof to the thermal treatment, which is characterized in that, gelatine, glycerol or a mixture of glycerol and sorbitol and starch are dispersed in water using a mechanical stirrer, then said mixture is heated to a temperature in the range of 50-100° C until a uniform consistency is achieved. Subsequently, the mixture is cooled down to a temperature in the range from 35 to 40°C with continuous stirring followed by adding the protein components and the porophors. A heat-insulating packaging material, in particular for the food products according to the invention, containing a cellulosic material coated by a layer of foamable coating which is characterized by that said material has a least one layer of a foamable coating obtained from aforementioned composition coated on the cellulosic material. A method for preparing a heat insulating packaging material, according to the invention, containing a layer of foamable coating which comprises a coating of cellulosic material by a coating from the biodegradable materials, drying and foaming, which is characterized by that, the cellulosic material is a one-side coated by at least one layer of the composition obtained by the aforementioned method. The material is then preliminary dried and subjected to foaming with the application of known heating methods ensuring a uniform heating.