CN105230775A - High-efficiency preserving agent for fresh white fungus, preparation method thereof and preservation method thereof - Google Patents

High-efficiency preserving agent for fresh white fungus, preparation method thereof and preservation method thereof Download PDF

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CN105230775A
CN105230775A CN201510728236.1A CN201510728236A CN105230775A CN 105230775 A CN105230775 A CN 105230775A CN 201510728236 A CN201510728236 A CN 201510728236A CN 105230775 A CN105230775 A CN 105230775A
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fresh
keeping
white fungus
powder
water
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CN105230775B (en
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肖奎
刑亚阁
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Tongjiang Gulin Tremella Co Ltd
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Tongjiang Gulin Tremella Co Ltd
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Abstract

The invention discloses a high-efficiency preserving agent for fresh white fungus, a preparation method thereof and a preservation method thereof. The preserving agent is composed of preserving powder A, preserving powder B and a film coating solution C according to a weight ratio of 2:(1-3):(1.5-2.5); the preserving powder A is prepared from raw materials comprising the following ingredients: water-soluble chitosan, porous starch, glacial acetic acid, plant essential oil a and water; the preserving powder B is prepared from raw materials comprising the following ingredients: food-grade ethyl cellulose, alcohol-soluble chitosan, food-grade sodium metabisulfite and absolute alcohol; and the film coating solution C is prepared from raw materials comprising the following ingredients: water-soluble chitosan, water-soluble propolis, sorbic acid, citric acid, capsaicin, polymethoxylated flavones, glucomannan, plant essential oil b and water. The preserving agent is a nontoxic and highly-effective plant-source preserving agent without secondary pollution; and the preserving agent is capable of prolonging shelf life of the fresh white fungus by more than time and preserving nutrient components of the fresh white fungus. The high-efficiency preserving agent for fresh white fungus has strong practicability.

Description

A kind of efficient fresh-keeping agent of fresh white fungus, its preparation method and preservation method thereof
Technical field
The present invention relates to the antistaling agent technical field of marketing fresh edible mushroom, be specifically related to a kind of efficient fresh-keeping agent of fresh white fungus, its preparation method and preservation method thereof.
Background technology
White fungus is a kind of fresh and tender good to eat, medicine-food two-purpose mushroom of being of high nutritive value, deeply likes by domestic and international consumer, China about white fungus record oneself have more than 1,000 year, since ancient times, white fungus is all regarded as excellent tonic product.Successive dynasties medicine man all think that white fungus the has function of " enriching yin and nourishing kidney, moisten the lung and relieve the cough and stomach ease constipation, beneficial gas and blood, benefit brain are refreshed oneself, the strong strong muscle of body, skin-softening beauty, promote longevity ".In " Chinese medicine voluminous dictionary ", the purposes of white fungus is write, " cure mainly cough with lung heat, dryness of the lung dry cough, chronic cough larynx is itched, and coughs the trace of blood or chronic cough network in sputum streaked with blood or phlegm and hinders hypochondriac pain, and lung carbuncle, lung repeatly, married woman's irregular menstruation, lung heat gastritis, stool closes knot, the lower blood of stool ".Modern medicine study shows, containing nutriments such as rich in protein, carbohydrate, vitamin, trace elements in white fungus, necessary 8 seed amino acids of human body, just containing 7 kinds in white fungus.Research in recent years fully confirms that the principle active component of white fungus is tremella polysaccharides, and tremella polysaccharides kind is more.Its main pharmacological effect is as follows: (1) obviously strengthens immunologic function and antitumor, anti-sudden change, anti-hepatitis, radioresistance and the increasing leukocyte of body; (2) antioxidation: can scavenging free radicals to the destruction of body, anti-senility, to promote longevity; (3) protein and nucleic acid synthesis can be promoted, have the effect promoting hemopoietic function of bone marrow; (4) obviously can reduce the content of CHF, cholesterol ester and lipoprotein in hyperlipemia rat blood serum, have the effect of reducing blood lipid, can blood sugar concentration be reduced simultaneously; (5) obviously extend the formation time of thrombus, have the effect of prevention and cure of cardiovascular disease; (6) degree of the rat paw edema caused by formaldehyde can obviously be alleviated, show its to inflammation ooze out and oedema has obvious resistant function, obviously can suppress the formation of stress in rats type ulcer, promote the healing of ulcer, there is anti-inflammation detumescence, promote the effect of ulcer healing.
Although fresh white fungus delicious flavour, rich in nutritive value, but, because its moisture content is high, it is tender and crisp to organize, thalline exocuticle is not protected, and edible mushroom sense organ in After-ripening shows as that dehydration shrinkage wilting, stem are elongated, indusium parachute-opening, self-dissolving rot even to produce foul smell; Physiological performance has respiration to strengthen, and cell leakage and enzymatic activity etc. change.Therefore, eat white fungus raw and very easily produce the problems such as moisture loss, physical damnification, infected by microbes; Though edible mushroom does not go bad sometimes, its commodity value has reduced or has lost, and has a strong impact on its storage quality, causes fresh white fungus preservation and freshness difficulty comparatively large, should not store up for a long time, significantly limit its storage, sale and consumption for this reason.Therefore, the research of fresh white fungus post-harvest fresh-keeping technology is the key solving fresh white fungus marketing problem, promotes the flourish key of mushroom industry especially.
Summary of the invention
In view of this, the application provides a kind of efficient fresh-keeping agent of fresh white fungus, its preparation method and preservation method thereof, described antistaling agent is plant source preservative, nontoxic, efficient, economical, can not secondary pollution be caused, the fresh white fungus shelf-life more than one times can be improved, retain the nutritional labeling of fresh white fungus, easy to use, practical.
For solving above technical problem, technical scheme provided by the invention is a kind of efficient fresh-keeping agent of fresh white fungus, described antistaling agent is made up of fresh-keeping powder A, fresh-keeping powder B, coating liquid C, and the part by weight of described fresh-keeping powder A, fresh-keeping powder B, coating liquid C is 2:(1-3): (1.5-2.5);
Described fresh-keeping powder A is obtained by the raw material comprising following component: water soluble chitosan, porous-starch, glacial acetic acid, plants essential oil a, water;
Described fresh-keeping powder B is obtained by the raw material comprising following component: food-grade ethyl cellulose, alcohol-soluble chitosan, food-grade sodium pyrosulfite, absolute ethyl alcohol;
Described coating liquid C is obtained by the raw material comprising following component: water soluble chitosan, water-soluble bee glue, sorb glue, citric acid, Capsaicin, polymethoxyflavone, glucomannans, plants essential oil b, water.
Preferably, in the raw material components of described fresh-keeping powder A, the proportioning of described water soluble chitosan, porous-starch, glacial acetic acid, plants essential oil a, water is (5-15g): (2-10g): (0.5-1.5mL): (1.9-4.8mL): (140-160mL);
In the raw material components of described fresh-keeping powder B, the proportioning of described food-grade ethyl cellulose, alcohol-soluble chitosan, food-grade sodium pyrosulfite, absolute ethyl alcohol is (15-35g): (3-10g): (5-20g): (140-160mL);
In the raw material components of described coating liquid C, the proportioning of described water soluble chitosan, water-soluble bee glue, sorb glue, citric acid, Capsaicin, polymethoxyflavone, glucomannans, plants essential oil b, water is (5-12g): (3-10g): (1-5g): (1-5g): (0.01-0.08mL): (0.1-0.8g): (0.2-0.9g): (0.1-0.5mL): (80-120mL).
More preferred, in the raw material components of described fresh-keeping powder A, the proportioning of described water soluble chitosan, porous-starch, glacial acetic acid, plants essential oil a, water is (7-10g): (5-8g): (0.9-1.2mL): (2.4-4.2mL): (150mL);
In the raw material components of described fresh-keeping powder B, the proportioning of described food-grade ethyl cellulose, alcohol-soluble chitosan, food-grade sodium pyrosulfite, absolute ethyl alcohol is (20-30g): (5-8g): (10-15g): (150mL);
In the raw material components of described coating liquid C, the proportioning of described water soluble chitosan, water-soluble bee glue, sorb glue, citric acid, Capsaicin, polymethoxyflavone, glucomannans, plants essential oil b, water is (7-10g): (5-7g): (2-4g): (2-3g): (0.03-0.05mL): (0.2-0.5g): (0.5-0.8g): (0.2-0.4mL): (100mL).
Preferably, in described fresh-keeping powder A, described plants essential oil a is the mixture of cinnamon essential oil, clove oil, lemon, cherry essence, and the volume ratio of described cinnamon essential oil, clove oil, lemon, cherry essence is (0.6-1.2): (0.4-1.2): (0.6-1.6): (0.3-0.8).
More preferred, the volume ratio of described cinnamon essential oil, clove oil, lemon, cherry essence is (0.7-1.1): (0.5-1.0): (0.8-1.5): (0.4-0.6).
Preferably, in described coating liquid C, described plants essential oil b is lemon.
Technical scheme also provides a kind of preparation method of efficient fresh-keeping agent of above-mentioned fresh white fungus, comprises the following steps:
(1) fresh-keeping powder A is prepared: water-soluble shitosan, porous-starch and glacial acetic acid are added to the water, start electric mixer to stir, 30-48min is stirred under the condition of rotating speed 1200-1500r/min, add plants essential oil a again, stirring 50-80min is continued under the condition of rotating speed 2000-3000r/min, then vacuum refrigeration spraying dry is adopted, vacuum is-0.088--0.095MPa, vapo(u)rizing temperature is-32--45 DEG C, condenser temperature is-65--75 DEG C, collects powder and namely obtain fresh-keeping powder A after vacuum refrigeration spraying dry;
(2) fresh-keeping powder B is prepared: take food grade ethyl cellulose and alcohol-soluble chitosan joins in absolute ethyl alcohol, start electric mixer to stir, 15-30min is stirred under the condition of rotating speed 1200-1500r/min, add food-grade sodium pyrosulfite again, under the condition of rotating speed 2000-3000r/min, continue stirring 50-80min, then adopt spraying dry, spray inlet temperature is 105-110 DEG C, outlet temperature is 50-58 DEG C, collects powder and namely obtain fresh-keeping powder B after spraying dry;
(3) coating liquid C is prepared: water-soluble shitosan, water-soluble bee glue, sorbic acid, citric acid are added to the water, start electric mixer to stir, 30-48min is stirred under the condition of rotating speed 1200-1500r/min, add Capsaicin, polymethoxyflavone, glucomannans and plants essential oil b again, under the condition of rotating speed 2000-3000r/min, continue stirring 50-80min, after leaving standstill 1h, namely obtain coating liquid C;
(4) getting part by weight is 2:(1-3): the fresh-keeping powder A of (1.5-2.5), fresh-keeping powder B, coating liquid C, by coating liquid C stand for standby use, mix fresh-keeping powder A with fresh-keeping powder B.
Technical scheme also provides a kind of and adopts the efficient fresh-keeping agent of above-mentioned fresh white fungus to carry out the fresh-keeping method of fresh white fungus, fresh white fungus is immersed in coating liquid C and soaks 2-3min, pull out after drying, carry out micropore plastic wrap packaging, then the fresh-keeping powder A after mixing and fresh-keeping powder B is packaged into inner wrapping, described inner wrapping has at least one side to have gas permeability, is put into by inner wrapping in the micropore plastic wrap packaging of fresh white fungus, then preserves under 1 DEG C of condition.
Technical scheme also provides a kind of and adopts the efficient fresh-keeping agent of above-mentioned fresh white fungus to carry out the fresh-keeping method of fresh white fungus, fresh white fungus is immersed in coating liquid C and soaks 2-3min, pull out dry rear for subsequent use, then foodstuff glue is adopted by the fresh-keeping powder A mixed and fresh-keeping powder B to be spread evenly across the food wrapper one side of waterproof, by the fresh white fungus parcel after immersion after described food wrapper dries, then preserve under 1 DEG C of condition.
Technical scheme also provides a kind of and adopts the efficient fresh-keeping agent of above-mentioned fresh white fungus to carry out the fresh-keeping method of fresh white fungus, fresh white fungus is immersed in coating liquid C and soaks 2-3min, pull out dry rear for subsequent use, then the fresh-keeping powder A mixed and fresh-keeping powder B is scattered in coating liquid C, root film is carried out to the fresh white fungus after soaking, dry rear employing microporous barrier to pack, then preserve under 1 DEG C of condition.
In technical scheme, polymethoxyflavone, have antibacterial, anti-oxidant, suppress erythrocyte agglutination and the biologically active such as sedimentation, anti-mutagenesis, be the characteristic chemical constituent in citrus fruit.
Glucomannans, content in konjaku is 50-60%, viscosity is high, good stability, water imbibition strong, good film-forming property, and can be food additives and antistaling agent, glucomannans extract can be used for the fresh-keeping of lichee, citrus, longan, Kiwi berry, Chinese chestnut, bamboo shoots, sweet shaddock, capsicum etc.
Plants essential oil is the secondary metabolites in plant, the simple compounds relatively little by molecular weight forms, there is certain aromatic odor, for the oily liquids material that can volatilize at normal temperatures, containing multiple low molecular antibacterial material and antioxidant content, as cinnamic acid, forulic acid, caffeic acid, cinnamic aldehyde, citronellol, thymol, eugenol etc., as fruits and vegetables class crude antistaling agent, can be effectively antibacterial anticorrosion, but there is high volatility in plants essential oil, the feature that volatilization is not easily preserved soon and because being liquid state.
Porous-starch is a kind of novel enzyme process converted starch, it is lower than under the temperature conditions of starch gelatinization by native starch, through the effect of enzyme preparation, the amorphous region of starch granules is hydrolyzed, and forming cellular structures, aperture is covered with whole starch particle surface, and its diameter is at about 1 μm, by surface to center deeply, the volume in hole accounts for about 50% of particle volume to aperture; Utilize that porous-starch is distinctive to be inclusionly embedded in wherein by plants essential oil, can be made into solid autocontrol multistage release biogenic Physiological effect antistaling agent, the limitation of the fresh-keeping application of plants essential oil can not only be overcome, and will long-time transport and the Shelf-life of white fungus be conducive to.
Beneficial effect of the present invention is:
(1) plants essential oil used in the present invention and Capsaicin etc. have very strong inhibition to the germ very easily occurred in fresh food bacterium white fungus postharvest storage process, and for other chemical synthesis antistaling agents, not having negative effect can not cause secondary pollution to it to fruits and vegetables, is a kind of nontoxic, efficient, economic plant source fruit and vegetable fresh-keeping agent.
(2) plants essential oil is passed through porous-starch by the present invention, the wall materials such as shitosan, after adopting vacuum refrigeration spraying dry technology of preparing to embed, preserve the effect of moisture in packaging at fresh white fungus under, shitosan is swelling gradually, plants essential oils etc. start volatilization antibiotic property composition voluntarily in packaging bag, play the effect of sterilization fresh-keeping, therefore the problem that plants essential oil volatilizees soon and the fresh keeping time caused is short is overcome, make its deenergized period long and moderate concentration, be suitable for the fresh-keeping white fungus of 32 DEG C of high temperature short-distance transport in summer 10 days, 0-5 DEG C of fresh-keeping white fungus of cryopreservation 20-30 days, compared with naturally contrasting, shelf life can be enhanced about more than once, said method changes the unborn physical aspect of plants essential oil simultaneously, makes it use extensively more convenient.
(3) antistaling agent that prepared by the present invention contains the active component of the natural fruit and vegetables such as polymethoxyflavone, glucomannans and plants essential oil, in conjunction with preservation coating liquid prepared by the film forming such as shitosan, propolis antimicrobial component, effectively can reduce the impact on respiration, aberration, weight-loss ratio, MDA and the soluble protein in fresh white fungus storage, soluble sugar content, the edible quality of fresh white fungus can be kept preferably, be mainly manifested in the color and luster that effectively can keep fresh white fungus, the consumption reducing nutriment, peroxidation of membrane lipids.
(4) the fresh-keeping of other edible mushrooms and fruits and vegetables can also be used in the antistaling agent that prepared by the present invention, as asparagus, Chinese cabbage, oranges and tangerines, lemon, loquat etc., more extend the scope of application of its antistaling agent, enhance practicality.
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
An efficient fresh-keeping agent for fresh white fungus, described antistaling agent is made up of fresh-keeping powder A, fresh-keeping powder B, coating liquid C;
Described fresh-keeping powder A obtains by comprising following raw material: water soluble chitosan 7-10g, porous-starch 5-8g, glacial acetic acid 0.9-1.2mL, plants essential oil a2.4-4.2mL, water 150mL;
Described fresh-keeping powder B obtains by comprising following raw material: food-grade ethyl cellulose 20-30g, alcohol-soluble chitosan 5-8g, food-grade sodium pyrosulfite 10-15g, absolute ethyl alcohol 150mL;
Described coating liquid C obtains by comprising following raw material: water soluble chitosan 7-10g, water-soluble bee glue 5-7g, sorb glue 2-4g, citric acid 2-3g, Capsaicin 0.03-0.05mL, polymethoxyflavone 0.2-0.5g, glucomannans 0.5-0.8g, lemon 0.2-0.4mL, water 100mL.
In described fresh-keeping powder A, described plants essential oil a is the mixture of cinnamon essential oil, clove oil, lemon, cherry essence, and wherein cinnamon essential oil is 0.7-1.1mL, and clove oil is 0.5-1.0mL, lemon is 0.8-1.5mL, and cherry essence is 0.4-0.6mL.
Its preparation method is:
(1) fresh-keeping powder A is prepared: above-mentioned water soluble chitosan, porous-starch and glacial acetic acid are added to the water, start electric mixer to stir, 30-48min is stirred under the condition of rotating speed 1200-1500r/min, add plants essential oil again, stirring 50-80min is continued under the condition of rotating speed 2000-3000r/min, then vacuum refrigeration spraying dry is adopted, vacuum is-0.088--0.095MPa, vapo(u)rizing temperature is-32--45 DEG C, condenser temperature is-65--75 DEG C, collects powder and namely obtain fresh-keeping powder A after vacuum refrigeration spraying dry;
(2) fresh-keeping powder B is prepared: join in absolute ethyl alcohol by above-mentioned food-grade ethyl cellulose and alcohol-soluble chitosan, start electric mixer to stir, 15-30min is stirred under the condition of rotating speed 1200-1500r/min, add food-grade sodium pyrosulfite again, under the condition of rotating speed 2000-3000r/min, continue stirring 50-80min, then adopt spraying dry, spray inlet temperature is 105-110 DEG C, outlet temperature is 50-58 DEG C, collects powder and namely obtain fresh-keeping powder B after spraying dry;
(3) coating liquid C is prepared: above-mentioned water soluble chitosan, water-soluble bee glue, sorbic acid, citric acid are added to the water, start electric mixer to stir, 30-48min is stirred under the condition of rotating speed 1200-1500r/min, add Capsaicin, polymethoxyflavone, glucomannans and lemon again, under the condition of rotating speed 2000-3000r/min, continue stirring 50-80min, after leaving standstill 1h, namely obtain coating liquid C.
Get fresh-keeping powder A, the fresh-keeping powder B that part by weight is 1:1 to mix, coating liquid C stand for standby use.
Adopt above-mentioned efficient fresh-keeping agent to carry out fresh-keeping method to be: fresh white fungus is immersed in coating liquid C and soaks 2-3min, pull out after drying, carry out micropore plastic wrap packaging, then the fresh-keeping powder A after mixing and fresh-keeping powder B is packaged into inner wrapping, described inner wrapping has at least one side to have gas permeability, inner wrapping is put in the micropore plastic wrap packaging of fresh white fungus, then preserve under 1 DEG C of condition.
Embodiment 2
The difference of the present embodiment and embodiment 1 is: described antistaling agent is made up of fresh-keeping powder A, fresh-keeping powder B, coating liquid C;
Described fresh-keeping powder A obtains by comprising following raw material: water soluble chitosan 5-7g, porous-starch 2-5g, glacial acetic acid 0.5-0.9mL, plants essential oil a1.9-2.4mL, water 140mL;
Described fresh-keeping powder B obtains by comprising following raw material: food-grade ethyl cellulose 15-20g, alcohol-soluble chitosan 3-5g, food-grade sodium pyrosulfite 5-10g, absolute ethyl alcohol 140mL;
Described coating liquid C obtains by comprising following raw material: water soluble chitosan 5-7g, water-soluble bee glue 3-5g, sorb glue 1-2g, citric acid 1-2g, Capsaicin 0.01-0.03mL, polymethoxyflavone 0.1-0.2g, glucomannans 0.2-0.5g, lemon 0.1-0.2mL, water 80mL.
Embodiment 3
The difference of the present embodiment and embodiment 1 is: described antistaling agent is made up of fresh-keeping powder A, fresh-keeping powder B, coating liquid C;
Described fresh-keeping powder A obtains by comprising following raw material: water soluble chitosan 10-15g, porous-starch 8-10g, glacial acetic acid 1.2-1.5mL, plants essential oil a4.2-4.8mL, water 160mL;
Described fresh-keeping powder B obtains by comprising following raw material: food-grade ethyl cellulose 30-35g, alcohol-soluble chitosan 8-10g, food-grade sodium pyrosulfite 15-20g, absolute ethyl alcohol 160mL;
Described coating liquid C obtains by comprising following raw material: water soluble chitosan 10-12g, water-soluble bee glue 7-10g, sorb glue 4-5g, citric acid 3-5g, Capsaicin 0.05-0.08mL, polymethoxyflavone 0.5-0.8g, glucomannans 0.8-0.9g, lemon 0.4-0.5mL, water 120mL.
Embodiment 4
The difference of the present embodiment and embodiment 1 is: in described fresh-keeping powder A, described plants essential oil a is the mixture of cinnamon essential oil, clove oil, lemon, cherry essence, wherein cinnamon essential oil is 0.6-0.7mL, clove oil is 0.4-0.5mL, lemon is 0.6-0.8mL, and cherry essence is 0.3-0.4mL.
Embodiment 5
The difference of the present embodiment and embodiment 1 is: in described fresh-keeping powder A, described plants essential oil a is the mixture of cinnamon essential oil, clove oil, lemon, cherry essence, wherein cinnamon essential oil is 1.1-1.2mL, clove oil is 1.0-1.2mL, lemon is 1.5-1.6mL, and cherry essence is 0.6-0.8mL.
Embodiment 6
The present embodiment is with the difference of embodiment 1: get fresh-keeping powder A, the fresh-keeping powder B that part by weight is 2:1 and mix, coating liquid C stand for standby use.
Embodiment 7
The present embodiment is with the difference of embodiment 1: get fresh-keeping powder A, the fresh-keeping powder B that part by weight is 2:3 and mix, coating liquid C stand for standby use.
Embodiment 8
The difference of the present embodiment and embodiment 1 is: adopt efficient fresh-keeping agent to carry out fresh-keeping method to be: be immersed in coating liquid C by fresh white fungus and soak 2-3min, pull out dry rear for subsequent use, then foodstuff glue is adopted by the fresh-keeping powder A mixed and fresh-keeping powder B to be spread evenly across the food wrapper one side of waterproof, by the fresh white fungus parcel after immersion after described food wrapper dries, then preserve under 1 DEG C of condition.
Embodiment 9
The difference of the present embodiment and embodiment 1 is: adopt efficient fresh-keeping agent to carry out fresh-keeping method to be: be immersed in coating liquid C by fresh white fungus and soak 2-3min, pull out dry rear for subsequent use, then the fresh-keeping powder A mixed and fresh-keeping powder B is scattered in coating liquid C, root film is carried out to the fresh white fungus after soaking, dry rear employing microporous barrier to pack, then preserve under 1 DEG C of condition.
Embodiment 10
The efficient fresh-keeping agent of the fresh white fungus described in embodiment 1 to embodiment 9 is carried out to the mensuration of fresh-keeping effect, measurement result, in table 1, arranges one group of blank simultaneously, does not do any process.
Wherein, fresh-keeping white fungus is carried out in efficient fresh-keeping agent described in embodiment 1-9, and its sample time is the 25th day, and the sample time of blank group is the 7th day, and weight-loss ratio adopts weighing method to measure; Aberration adopts color difference measurement instrument to measure; The mensuration of protein content adopts Coomassie brilliant G-250 decoration method; The mensuration of total reducing sugar adopts potassium ferricyanide titration; Specific experiment is operating as laboratory normal experiment means, and microbiological indicator comprises total plate count (adopting GB4789.2-2010 to measure), mould (adopting GB4789.15-2010 to measure).
Table 1 embodiment 10 fresh-keeping effect measurement result
As can be seen from the data result of table 1, antistaling agent described in embodiment 1 to embodiment 9 is relative to blank, it has fresh-keeping function clearly, the nutrition leak of fresh white fungus can be prevented, freshness date can reach 25 days, in addition, and comparative example 1 and embodiment 2,3, can find out that the data result of embodiment 1 is better, illustrate that with the component of the fresh-keeping powder A described in embodiment 1, fresh-keeping powder B and coating liquid C and content be preferred scheme; Comparative example 1 and embodiment 4,5, can find out that the proportioning of the plants essential oil described in embodiment 1 is preferred version; Comparative example 1 and embodiment 6,7, can find out better for fresh-keeping effect after fresh-keeping powder A and fresh-keeping powder B 1:1 mixing by weight proportion, be preferred version; Comparative example 1 and embodiment 8,9, can find out and adopt the preservation method of embodiment 1, and after namely adopting coating liquid C to soak, fresh-keeping powder A and fresh-keeping powder B being mixed to form micropore packaging that inner wrapping puts into, to carry out fresh-keeping mode better.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred embodiment should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. the efficient fresh-keeping agent of a fresh white fungus, it is characterized in that: described antistaling agent is made up of fresh-keeping powder A, fresh-keeping powder B, coating liquid C, the part by weight of described fresh-keeping powder A, fresh-keeping powder B, coating liquid C is 2:(1-3): (1.5-2.5);
Described fresh-keeping powder A is obtained by the raw material comprising following component: water soluble chitosan, porous-starch, glacial acetic acid, plants essential oil a, water;
Described fresh-keeping powder B is obtained by the raw material comprising following component: food-grade ethyl cellulose, alcohol-soluble chitosan, food-grade sodium pyrosulfite, absolute ethyl alcohol;
Described coating liquid C is obtained by the raw material comprising following component: water soluble chitosan, water-soluble bee glue, sorb glue, citric acid, Capsaicin, polymethoxyflavone, glucomannans, plants essential oil b, water.
2. the efficient fresh-keeping agent of a kind of fresh white fungus according to claim 1, is characterized in that:
In the raw material components of described fresh-keeping powder A, the proportioning of described water soluble chitosan, porous-starch, glacial acetic acid, plants essential oil a, water is (5-15g): (2-10g): (0.5-1.5mL): (1.9-4.8mL): (140-160mL);
In the raw material components of described fresh-keeping powder B, the proportioning of described food-grade ethyl cellulose, alcohol-soluble chitosan, food-grade sodium pyrosulfite, absolute ethyl alcohol is (15-35g): (3-10g): (5-20g): (140-160mL);
In the raw material components of described coating liquid C, the proportioning of described water soluble chitosan, water-soluble bee glue, sorb glue, citric acid, Capsaicin, polymethoxyflavone, glucomannans, plants essential oil b, water is (5-12g): (3-10g): (1-5g): (1-5g): (0.01-0.08mL): (0.1-0.8g): (0.2-0.9g): (0.1-0.5mL): (80-120mL).
3. the efficient fresh-keeping agent of a kind of fresh white fungus according to claim 2, is characterized in that:
In the raw material components of described fresh-keeping powder A, the proportioning of described water soluble chitosan, porous-starch, glacial acetic acid, plants essential oil a, water is (7-10g): (5-8g): (0.9-1.2mL): (2.4-4.2mL): (150mL);
In the raw material components of described fresh-keeping powder B, the proportioning of described food-grade ethyl cellulose, alcohol-soluble chitosan, food-grade sodium pyrosulfite, absolute ethyl alcohol is (20-30g): (5-8g): (10-15g): (150mL);
In the raw material components of described coating liquid C, the proportioning of described water soluble chitosan, water-soluble bee glue, sorb glue, citric acid, Capsaicin, polymethoxyflavone, glucomannans, plants essential oil b, water is (7-10g): (5-7g): (2-4g): (2-3g): (0.03-0.05mL): (0.2-0.5g): (0.5-0.8g): (0.2-0.4mL): (100mL).
4. the efficient fresh-keeping agent of a kind of fresh white fungus according to any one of claim 1-3, it is characterized in that: in described fresh-keeping powder A, described plants essential oil a is the mixture of cinnamon essential oil, clove oil, lemon, cherry essence, and the volume ratio of described cinnamon essential oil, clove oil, lemon, cherry essence is (0.6-1.2): (0.4-1.2): (0.6-1.6): (0.3-0.8).
5. the efficient fresh-keeping agent of a kind of fresh white fungus according to claim 4, is characterized in that: the volume ratio of described cinnamon essential oil, clove oil, lemon, cherry essence is (0.7-1.1): (0.5-1.0): (0.8-1.5): (0.4-0.6).
6. the efficient fresh-keeping agent of a kind of fresh white fungus according to any one of claim 1-3, is characterized in that: in described coating liquid C, and described plants essential oil b is lemon.
7. a preparation method for the efficient fresh-keeping agent of fresh white fungus described in any one of claim 1-6, is characterized in that: comprise the following steps:
(1) fresh-keeping powder A is prepared: water-soluble shitosan, porous-starch and glacial acetic acid are added to the water, start electric mixer to stir, 30-48min is stirred under the condition of rotating speed 1200-1500r/min, add plants essential oil a again, stirring 50-80min is continued under the condition of rotating speed 2000-3000r/min, then vacuum refrigeration spraying dry is adopted, vacuum is-0.088--0.095MPa, vapo(u)rizing temperature is-32--45 DEG C, condenser temperature is-65--75 DEG C, collects powder and namely obtain fresh-keeping powder A after vacuum refrigeration spraying dry;
(2) fresh-keeping powder B is prepared: take food grade ethyl cellulose and alcohol-soluble chitosan joins in absolute ethyl alcohol, start electric mixer to stir, 15-30min is stirred under the condition of rotating speed 1200-1500r/min, add food-grade sodium pyrosulfite again, under the condition of rotating speed 2000-3000r/min, continue stirring 50-80min, then adopt spraying dry, spray inlet temperature is 105-110 DEG C, outlet temperature is 50-58 DEG C, collects powder and namely obtain fresh-keeping powder B after spraying dry;
(3) coating liquid C is prepared: water-soluble shitosan, water-soluble bee glue, sorbic acid, citric acid are added to the water, start electric mixer to stir, 30-48min is stirred under the condition of rotating speed 1200-1500r/min, add Capsaicin, polymethoxyflavone, glucomannans and plants essential oil b again, under the condition of rotating speed 2000-3000r/min, continue stirring 50-80min, after leaving standstill 1h, namely obtain coating liquid C;
(4) getting part by weight is 2:(1-3): the fresh-keeping powder A of (1.5-2.5), fresh-keeping powder B, coating liquid C, by coating liquid C stand for standby use, mix fresh-keeping powder A with fresh-keeping powder B.
8. one kind adopts the efficient fresh-keeping agent of fresh white fungus described in any one of claim 1-6 to carry out the fresh-keeping method of fresh white fungus, it is characterized in that: fresh white fungus is immersed in coating liquid C and soaks 2-3min, pull out after drying, carry out micropore plastic wrap packaging, then the fresh-keeping powder A after mixing and fresh-keeping powder B is packaged into inner wrapping, described inner wrapping has at least one side to have gas permeability, is put into by inner wrapping in the micropore plastic wrap packaging of fresh white fungus, then preserves under 1 DEG C of condition.
9. one kind adopts the efficient fresh-keeping agent of fresh white fungus described in any one of claim 1-6 to carry out the fresh-keeping method of fresh white fungus, it is characterized in that: fresh white fungus is immersed in coating liquid C and soaks 2-3min, pull out dry rear for subsequent use, then foodstuff glue is adopted by the fresh-keeping powder A mixed and fresh-keeping powder B to be spread evenly across the food wrapper one side of waterproof, by the fresh white fungus parcel after immersion after described food wrapper dries, then preserve under 1 DEG C of condition.
10. one kind adopts the efficient fresh-keeping agent of fresh white fungus described in any one of claim 1-6 to carry out the fresh-keeping method of fresh white fungus, it is characterized in that: fresh white fungus is immersed in coating liquid C and soaks 2-3min, pull out dry rear for subsequent use, then the fresh-keeping powder A mixed and fresh-keeping powder B is scattered in coating liquid C, root film is carried out to the fresh white fungus after soaking, dry rear employing microporous barrier to pack, then preserve under 1 DEG C of condition.
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