CN113389076B - Preparation method of fruit and vegetable large-organism preservative paper containing bioactive components - Google Patents

Preparation method of fruit and vegetable large-organism preservative paper containing bioactive components Download PDF

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CN113389076B
CN113389076B CN202110772242.2A CN202110772242A CN113389076B CN 113389076 B CN113389076 B CN 113389076B CN 202110772242 A CN202110772242 A CN 202110772242A CN 113389076 B CN113389076 B CN 113389076B
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bioactive components
pulping
fruit
mass
pulp
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CN113389076A (en
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黄效华
汪培育
池姗
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Baicaobianda Biotechnology Qingdao Co ltd
Bestee Material Tsingtao Co Ltd
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Baicaobianda Biotechnology Qingdao Co ltd
Bestee Material Tsingtao Co Ltd
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/02—Methods of beating; Beaters of the Hollander type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/02—Material of vegetable origin
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention provides a preparation method of fruit and vegetable macro-organism preservative paper containing bioactive components, which comprises pulping, preparing base paper, adding the bioactive components, needling and calendaring. The fruit and vegetable macro-organism preservative paper containing bioactive components is used for coating apples, and the apple is placed for a week at the temperature of 25 ℃ and the humidity of 40 percent, and the water loss rate is 2.3-2.5 percent; the product is placed for 17 to 20 days, and the phenomenon of putrefaction and mildew does not occur; the inhibition rate of the bacillus coli is 94.8-95.8%, the inhibition rate of the bacillus faecalis is 91.9-92.4%, and the inhibition rate of the staphylococcus is 92.5-93.2%.

Description

Preparation method of fruit and vegetable large-organism preservative paper containing bioactive components
Technical Field
The invention relates to a fruit and vegetable large-organism preservative paper containing bioactive components, belonging to the technical field of preservative paper.
Background
The fruits and vegetables contain various nutrient substances required by human life and are indispensable food in human life, but the fruits and vegetables are high in seasonality and regionality and easy to rot, so that the requirements of vast consumers on the diversity and off-season regulation of the fruits and vegetables are contradicted. Therefore, depending on advanced science and technology, the natural quality and characteristics of fruits and vegetables can be prolonged or maintained as much as possible, which is an important research topic in the food field. In addition, the fruits and vegetables need to be preserved in the process of storage and transportation, and the fresh-keeping paper is important in the products used for preservation. The traditional preservative paper is only soft paper and can only absorb redundant moisture, however, when the moisture exceeds a standard amount, the soft paper can cause the fruits and vegetables to rot and deteriorate, the preservation effect of the fruits is seriously affected, and great troubles are brought to people; meanwhile, fruits and vegetables can generate ethylene to accelerate the ripening, and the preservative paper has no good air permeability and cannot effectively absorb and discharge the ethylene to dilute the ethylene, so that a good preservation effect cannot be achieved; some fresh-keeping paper is made of harmful chemical components, so that the fruits and vegetables can be effectively prevented from going bad and rotting, but improper cleaning can cause harm to the health of people; in addition, fruits and vegetables carry bacterial microorganisms to rot and deteriorate, and the preservative paper cannot effectively inhibit the bacterial microorganisms, so that the preservation effect is greatly reduced. Research reports that the active ingredients of the ligusticum wallichii, the cortex acanthopanacis and the clove have good fruit mildew-proof effect.
In summary, the prior art has the following problems:
(1) The air permeability is poor;
(2) The mildew resistance is poor;
(3) The antibacterial activity is poor;
(4) The water of the fruits and vegetables cannot be kept;
(5) Contains harmful chemical components.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the fruit and vegetable large organism preservative paper containing the bioactive components, thereby realizing the following aims:
(1) The air permeability is good, and the ethylene released by the fruits and vegetables can be absorbed and discharged;
(2) The mildew resistance is good;
(3) The antibacterial agent has good antibacterial activity;
(4) The water content of the fruits and vegetables can be kept;
(5) Contains no harmful chemical components.
In order to solve the technical problem, the invention adopts the following technical scheme:
the preparation method of the fruit and vegetable major organism preservative paper containing the bioactive components comprises pulping, preparing base paper, adding the bioactive components, needling and calendaring.
The following is a further improvement of the above technical scheme:
(1) Pulping
Pulverizing branches and leaves of Chinese arborvitae, tea and reed in a pulverizer, mixing with slices of fast-growing poplar to obtain a mixture, adding sodium hydroxide accounting for 1-2% of the mass of the mixture, starch accounting for 2.5-3.5% of the mass of the mixture and water accounting for 250-300%, and heating at 100 ℃ for 2.5-3.5 hours to obtain pulping slurry.
The mixture comprises the following components in parts by mass: 2.5-3.5 parts of arborvitae branches and leaves, 0.5-1.5 parts of tea, 6-8 parts of reed and 18-22 parts of fast-growing poplar slices;
the water content of the tea is 12 percent, and the water content of the arborvitae branches and leaves, the reed and the fast-growing poplar slice is 20 percent;
the fast-growing poplar slices are 12-14mm long, 7-9mm wide and 1-2mm thick.
(2) Beating
First pulping, feeding the pulping pulp into a pulping machine, adding endo-cellulase and xylanase with the mass of 1.5-2.5% of the pulp, and pulping by controlling the pulping temperature to be 30-35 ℃, the pulping degree to be 28.5-32 DEG SR and the pulp freeness to be 400-450mL;
and (3) pulping for the second time, controlling the pulping temperature to be 32-37 ℃, the pulping degree to be 22.5-26 DEG SR and the freeness of the pulp to be 480-550mL, thus obtaining the pulped pulp with the concentration of 4-5%.
(3) Preparation of base paper
Adding chitosan accounting for 2.5-3.5% of the mass of the pulped pulp, polyamide-polyepichlorohydrin resin accounting for 3-4% of the mass of the pulped pulp and aluminum chloride accounting for 2-3% of the mass of the pulped pulp, stirring at the rotating speed of 180-220rpm for 35-45 minutes at the stirring temperature of 35-45 ℃, making paper and drying after stirring to obtain base paper, wherein the water content of the dried base paper is 3.2-4%, the thickness of the dried base paper is 0.14-0.17mm, and the prepared base paper has coarse fibers, uniform and compact gaps and good air permeability.
(4) Adding bioactive components
Spraying the water solution containing bioactive components onto base paper at a spraying amount of 35-45g/m 2 Spraying on both sides, standing for 7-9h after spraying until the components are fully permeated and naturally dried to obtain base paper containing bioactive components, wherein the water content is 7.2-8.1%;
the water solution containing the bioactive components comprises the following components in percentage by mass: 2.5-3.5% of active ingredients of ligusticum chuanxiong hort, 2.5-3.5% of active ingredients of cortex acanthopanacis, 4-6% of active ingredients of clove and 87-91% of pure water.
(5) Needling and calendering
Carrying out needling roller treatment on base paper containing bioactive components to obtain compact and tiny gaps and increase the air permeability of the base paper;
the needling roller adopts a needling form, the diameter of the needle is 0.05mm, and the needle density is 8000-11000 needles/m 2 The needling frequency is 700-900 times/min;
calendaring the base paper containing the bioactive components after needling, wherein the calendaring temperature is 55-65 ℃, the roller surface line pressure of a calendaring roller is 180-210N/cm, the roller speed is 8-12m/min, and the fruit and vegetable macro-organism preservative paper containing the bioactive components is obtained after calendaring.
Compared with the prior art, the invention has the following beneficial effects:
(1) The fruit and vegetable macro-organism preservative paper containing bioactive components is used for coating apples, and the apple is placed for a week at the temperature of 25 ℃ and the humidity of 40 percent, and the water loss rate is 2.3-2.5 percent;
(2) The fruit and vegetable large biological preservative paper containing the bioactive components is used for coating apples, and the apples are placed for 17-20 days at 25 ℃ and 40% of humidity, so that the phenomena of putrefaction and mildew are avoided;
(3) The fruit and vegetable large organism preservative paper containing the bioactive components has the inhibition rate of 94.8-95.8% on escherichia coli, the inhibition rate of 91.9-92.4% on coprobacterium and the inhibition rate of 92.5-93.2% on staphylococcus;
(4) The fruit and vegetable Dabiol preservative paper containing the bioactive components has good air permeability, and the air permeability is 312-356L/m 2 /s；
(5) The fruit and vegetable Dabiol preservative paper containing the bioactive components has good tear resistance and the tear index is 3.2-3.4mN.m 2 /g。
Detailed Description
Example 1 preparation method of fruit and vegetable Dabiol preservative paper containing bioactive components
The method comprises the following steps:
(1) Pulping
Feeding the branches and leaves of the arborvitae, the tea and the reed into a pulverizer to be pulverized, mixing the pulverized branches and leaves of the arborvitae, the tea and the reed with the cut fast-growing poplar to form a mixture, adding sodium hydroxide accounting for 1.5% of the mass of the mixture, starch accounting for 3% of the mass of the mixture and water accounting for 270% of the mass of the mixture, and heating the mixture for 3 hours at 100 ℃ to obtain pulping slurry.
The mixture comprises the following components in parts by mass: 3 parts of arborvitae branches and leaves, 1 part of tea, 7 parts of reed and 20 parts of fast-growing poplar slices;
the water content of the tea is 12 percent, and the water content of the arborvitae branches and leaves, the reed and the fast-growing poplar slice is 20 percent;
the fast-growing poplar slices are 12-14mm long, 7-9mm wide and 1-2mm thick.
(2) Beating
Pulping for the first time, feeding the pulping pulp into a pulping machine, adding endo-cellulase accounting for 2 percent of the mass of the pulp and xylanase accounting for 1.5 percent of the mass of the pulp for pulping, controlling the pulping temperature to be 32 ℃, the pulping degree to be 30 DEG SR and the freeness of the pulp to be 420mL;
and (3) pulping for the second time, controlling the pulping temperature to be 35 ℃, the pulping degree to be 24 DEG SR and the freeness of the pulp to be 530mL, thus obtaining the pulped pulp with the concentration of 4.5 percent.
(3) Preparation of base paper
Adding chitosan accounting for 3% of the mass of the pulped pulp, polyamide polyepichlorohydrin resin accounting for 3.5% of the mass of the pulped pulp and aluminum chloride accounting for 2.5% of the mass of the pulped pulp, stirring at the rotation speed of 200rpm for 40 minutes at the stirring temperature of 40 ℃, making paper after stirring and drying to obtain base paper, wherein the water content of the dried base paper is 3.5%, the thickness of the dried base paper is 0.15mm, and the prepared base paper is relatively coarse in fiber, uniform and compact in gap and good in air permeability.
(4) Adding bioactive components
Spraying water solution containing bioactive components onto base paper at a spraying amount of 40g/m 2 Spraying on two sides, standing for 8h after spraying until the components are fully permeated and naturally dried to obtain raw paper containing bioactive components, wherein the water content is 7.5%;
the water solution containing the bioactive components comprises the following components in percentage by mass: the traditional Chinese medicine composition comprises 3% of ligusticum chuanxiong hort active ingredient, 3% of cortex acanthopanacis active ingredient, 5% of clove active ingredient and 89% of pure water.
(5) Needling and calendering
Carrying out needling roller treatment on the base paper containing the bioactive components to obtain compact and tiny gaps and increase the air permeability;
the needling roller adopts a needling form, the diameter of the needling is 0.05mm, and the density of the implanted needles is 10000 pieces/m 2 The needling frequency is 800 times/min;
and (3) calendering the base paper containing the bioactive components after needling, wherein the calendering temperature is 60 ℃, the line pressure of the roller surface of a calendering roller is 200N/cm, the roller speed is 10m/min, and the fruit and vegetable macro-organism preservative paper containing the bioactive components is obtained after calendering.
Advantageous effects of the present embodiment
(1) In the embodiment, the fruit and vegetable macro-organism preservative paper containing bioactive components is used for coating apples, and the apple is placed for a week at 25 ℃ and the humidity of 40%, and the water loss rate is 2.3%;
(2) The fruit and vegetable large biological preservative paper containing the bioactive components is used for coating apples, and the apples are placed for 20 days at 25 ℃ and 40% of humidity, so that the phenomena of putrefaction and mildew are avoided;
(3) In the embodiment, the fruit and vegetable large-organism preservative paper containing bioactive components has the inhibition rate of 95.8 percent on escherichia coli, 92.4 percent on coprobacterium and 93.2 percent on staphylococcus;
(4) The fruit and vegetable macro-organism preservative paper containing the bioactive components has good air permeability, and the air permeability is 356L/m 2 /s；
(5) The fruit and vegetable large-organism preservative paper containing the bioactive components has good tear resistance, and the tear index is 3.4mN.m 2 /g。
Example 2 preparation method of fruit and vegetable Dabiol preservative paper containing bioactive components
The method comprises the following steps:
(1) Pulping
The branches and leaves of the arborvitae, the tea and the reed are sent into a crusher to be crushed, the crushed arborvitae, the tea and the reed are mixed with the fast-growing poplar slices into a mixture after being crushed, sodium hydroxide, starch and water are added, the mass of the sodium hydroxide, the starch and the water account for 1% of the mixture, and the mixture is heated for 2.5 hours at the temperature of 100 ℃ to obtain pulping slurry.
The mixture comprises the following components in parts by mass: 2.5 parts of arborvitae branches and leaves, 0.5 part of tea, 6 parts of reed and 18 parts of fast-growing poplar slices;
the water content of the tea is 12 percent, and the water content of the arborvitae branches and leaves, the reed and the fast-growing poplar slice is 20 percent;
the fast-growing poplar slices are 12-14mm long, 7-9mm wide and 1-2mm thick.
(2) Beating
Pulping for the first time, feeding the pulping pulp into a pulping machine, adding endo-cellulase and xylanase with the mass of 1.5 percent of the pulp for pulping, controlling the pulping temperature to be 30 ℃, the pulping degree to be 28.5 DEG SR and the pulp freeness to be 450mL;
and (3) pulping for the second time, controlling the pulping temperature to be 32 ℃, the pulping degree to be 22.5 DEG SR and the freeness of the pulp to be 550mL, thus obtaining the pulped pulp with the concentration of 4.0%.
(3) Preparation of base paper
Adding chitosan accounting for 2.5% of the mass of the pulped pulp, polyamide polyepichlorohydrin resin accounting for 3% of the mass of the pulped pulp and aluminum chloride accounting for 2% of the mass of the pulped pulp, stirring at the rotating speed of 180rpm for 35 minutes at the stirring temperature of 35 ℃, making paper after stirring and drying to obtain base paper, wherein the water content of the dried base paper is 4.0%, the thickness of the dried base paper is 0.14mm, and the prepared base paper is relatively coarse in fiber, uniform and compact in gaps and good in air permeability.
(4) Adding bioactive components
Spraying water solution containing bioactive components onto base paper at a spraying amount of 35g/m 2 Spraying on both sides, standing for 7h after spraying until the components are fully permeated and naturally dried to obtain the raw paper containing the bioactive components, wherein the water content is 8.1%;
the water solution containing the bioactive components comprises the following components in percentage by mass: 2.5 percent of active ingredients of the ligusticum chuanxiong hort, 2.5 percent of active ingredients of the cortex acanthopanacis, 4 percent of active ingredients of the clove and 91 percent of pure water.
(5) Needling and calendering
Carrying out needling roller treatment on base paper containing bioactive components to obtain compact and tiny gaps and increase the air permeability of the base paper;
the needling roller adopts a needling form, the diameter of the needle is 0.05mm, and the needle density is 8000 pieces/m 2 The needling frequency is 700 times/min;
and (3) calendering the base paper containing the bioactive components after needling at 55 ℃, the line pressure of the roller surface of a calendering roller is 180N/cm, the roller speed is 8m/min, and the fruit and vegetable macro-organism preservative paper containing the bioactive components is obtained after calendering.
Advantageous effects of the present embodiment
(1) In the embodiment, the apple coated with the fruit and vegetable macro-organism preservative paper containing the bioactive components is placed for a week at the temperature of 25 ℃ and the humidity of 40%, and the water loss rate is 2.5%;
(2) The fruit and vegetable large biological preservative paper containing the bioactive components is used for coating apples, and the apples are placed for 17 days at 25 ℃ and 40% humidity, so that the phenomena of putrefaction and mildew are avoided;
(3) In the embodiment, the fruit and vegetable large-organism preservative paper containing bioactive components has the inhibition rate of 95.2 percent on escherichia coli, 91.9 percent on coprobacterium and 92.7 percent on staphylococcus;
(4) The fruit and vegetable macro-organism preservative paper containing the bioactive components has good air permeability, wherein the air permeability is 329L/m < 2 >/s;
(5) The fruit and vegetable Dabiol preservative paper containing the bioactive components has good tear resistance, and the tear index is 3.2mN.m2/g.
Example 3 preparation method of fruit and vegetable Dabiol preservative paper containing bioactive components
The method comprises the following steps:
(1) Pulping
Feeding the branches and leaves of the arborvitae, the tea and the reed into a grinder to be ground, mixing the ground branches and leaves with the cut fast-growing poplar to form a mixture, adding sodium hydroxide accounting for 2% of the mass of the mixture, starch accounting for 3.5% of the mass of the mixture and water accounting for 300%, and heating the mixture for 3.5 hours at 100 ℃ to obtain pulping slurry.
The mixture comprises the following components in parts by mass: 3.5 parts of arborvitae branches and leaves, 1.5 parts of tea, 8 parts of reed and 22 parts of fast-growing poplar slices;
the water content of the tea is 12 percent, and the water content of the arborvitae branches and leaves, the reed and the fast-growing poplar slice is 20 percent;
the fast-growing poplar slices are 12-14mm long, 7-9mm wide and 1-2mm thick.
(2) Beating
Pulping for the first time, feeding the pulping pulp into a pulping machine, adding endo-cellulase and xylanase with the mass of 2.5 percent of the pulp for pulping, controlling the pulping temperature to be 35 ℃, the pulping degree to be 32 DEG SR and the pulp freeness to be 400mL;
and (3) pulping for the second time, controlling the pulping temperature to be 37 ℃, the pulping degree to be 26 DEG SR and the freeness of the pulp to be 480mL, thus obtaining the pulped pulp with the concentration of 5%.
(3) Preparation of base paper
Adding chitosan accounting for 3.5% of the mass of the pulped pulp, polyamide polyepichlorohydrin resin accounting for 4% of the mass of the pulped pulp and aluminum chloride accounting for 3% of the mass of the pulped pulp, stirring at the rotating speed of 220rpm for 45 minutes at the stirring temperature of 45 ℃, making paper after stirring and drying to obtain base paper, wherein the water content of the dried base paper is 3.2%, the thickness of the dried base paper is 0.17mm, and the prepared base paper is relatively coarse in fiber, uniform and compact in gaps and good in air permeability.
(4) Adding bioactive components
Spraying water solution containing bioactive components onto base paper at a spraying amount of 45g/m 2 Spraying on two sides, standing for 9h after spraying until the components are fully permeated and naturally dried to obtain raw paper containing bioactive components, wherein the water content is 7.2%;
the water solution containing the bioactive components comprises the following components in percentage by mass: 3.5 percent of active ingredients of the ligusticum chuanxiong hort, 3.5 percent of active ingredients of the cortex acanthopanacis, 6 percent of active ingredients of the clove and 87 percent of pure water.
(5) Needling and calendering
Carrying out needling roller treatment on the base paper containing the bioactive components to obtain compact and tiny gaps and increase the air permeability;
the needling roller adopts a needling form, the diameter of the needle is 0.05mm, and the needle density is 11000 pieces/m 2 The needling frequency is 900 times/min;
calendaring the base paper containing the bioactive components after needling, wherein the calendaring temperature is 65 ℃, the roller surface line pressure of a calendaring roller is 210N/cm, the roller speed is 12m/min, and the fruit and vegetable macro-organism preservative paper containing the bioactive components is obtained after calendaring.
Advantageous effects of the present embodiment
(1) In the embodiment, the fruit and vegetable macro-organism preservative paper containing bioactive components is used for coating apples, and the apple is placed for a week at 25 ℃ and the humidity of 40%, and the water loss rate is 2.4%;
(2) The fruit and vegetable large biological preservative paper containing the bioactive components is used for coating apples, and the apples are placed for 19 days at 25 ℃ and 40% humidity, so that the phenomena of putrefaction and mildew are avoided;
(3) In the embodiment, the fruit and vegetable Dabiol preservative paper containing bioactive components has the inhibition rate of 94.8% on escherichia coli, 92.1% on coprobacteria and 92.5% on staphylococcus;
(4) The fruit and vegetable macro-organism preservative paper containing the bioactive components has good air permeability, and the air permeability is 312L/m 2 /s；
(5) The fruit and vegetable Dabiol preservative paper containing the bioactive components has good tear resistance, and the tear index is 3.3mN.m2/g.

Claims (4)

1. The preparation method of the fruit and vegetable major organism preservative paper containing the bioactive components is characterized by comprising pulping, preparing base paper, adding the bioactive components, needling and calendaring;
the method comprises the following steps of pulping, namely crushing branches and leaves of platycladus orientalis, tea and reed, mixing the crushed platycladus orientalis, tea and reed with fast-growing poplar slices to form a mixture, adding sodium hydroxide accounting for 1-2% of the mass of the mixture, starch accounting for 2.5-3.5% of the mass of the mixture and water accounting for 250-300%, and heating for 2.5-3.5 hours at 100 ℃ to obtain pulping slurry;
pulping, including primary pulping and secondary pulping;
during the first pulping, endo-cellulase and xylanase accounting for 1.5-2.5% of the mass of the pulp are added into the pulping pulp, the pulping temperature is controlled to be 30-35 ℃, the pulping degree is controlled to be 28.5-32 DEG SR, and the freeness of the pulp is 400-450mL;
during the second beating, the beating temperature is controlled to be 32-37 ℃, the beating degree is controlled to be 22.5-26 DEG SR, and the freeness of the pulp is controlled to be 480-550mL, so that the beaten pulp with the concentration of 4-5% is obtained;
preparing base paper, adding chitosan accounting for 2.5-3.5% of the mass of the pulped pulp, polyamide-epichlorohydrin resin accounting for 3-4% of the mass of the pulped pulp and aluminum chloride accounting for 2-3% of the mass of the pulped pulp into the pulped pulp, stirring at the rotating speed of 180-220rpm for 35-45 minutes at the stirring temperature of 35-45 ℃, making paper after stirring and drying to obtain the base paper, wherein the water content is 3.2-4% after drying, and the thickness is 0.14-0.17mm;
adding bioactive components, and spraying aqueous solution containing bioactive components onto two sides of base paper at a spraying amount of 35-45g/m 2 Spraying, standing for 7-9 hr until the components are fully permeated, and naturally drying to obtain base paper containing bioactive components with water content of 7.2-8.1%;
the water solution containing the bioactive components comprises the following components in percentage by mass: 2.5-3.5% of active ingredients of ligusticum chuanxiong hort, 2.5-3.5% of active ingredients of cortex acanthopanacis, 4-6% of active ingredients of clove and 87-91% of pure water.
2. The preparation method of the fruit and vegetable large organism preservative paper containing the bioactive components as claimed in claim 1, is characterized in that:
the mixture comprises the following components in parts by mass: 2.5-3.5 parts of arborvitae branches and leaves, 0.5-1.5 parts of tea, 6-8 parts of reed and 18-22 parts of fast-growing poplar slices;
the water content of the tea is 12 percent, and the water content of the arborvitae branches and leaves, the reed and the fast-growing poplar slice is 20 percent.
3. The preparation method of the fruit and vegetable Dabiol preservative paper containing the bioactive components as claimed in claim 1, wherein the preparation method comprises the following steps:
the needling is carried out by adopting a needling form in the needling roller treatment, the diameter of the needle is 0.05mm, and the needle density is 8000-11000 needles/m 2 The needling frequency is 700-900 times/min.
4. The preparation method of the fruit and vegetable large organism preservative paper containing the bioactive components as claimed in claim 1, is characterized in that:
and in the calendering, the raw paper containing the bioactive components after needling is calendered, the calendering temperature is 55-65 ℃, the line pressure of the roller surface of a calendering roller is 180-210N/cm, the roller speed is 8-12m/min, and the fruit and vegetable macro-organism preservative paper containing the bioactive components is obtained after calendering.
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