CN106118260A - A kind of SiO2the preparation method of/clove oil edible starch antibacterial film coating - Google Patents
A kind of SiO2the preparation method of/clove oil edible starch antibacterial film coating Download PDFInfo
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- 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
- C09D103/00—Coating compositions based on starch, amylose or amylopectin or on their derivatives or degradation products
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention belongs to antibacterial food preservative and food antibacterial fresh-keeping packaging Material Field, be specifically related to a kind of SiO2The preparation method of/clove oil edibility corn starch antibacterial film coating.The present invention is first by clove oil and Nano-meter SiO_22Fully dispersed mixing, makes clove oil be adsorbed onto Nano-meter SiO_22On, obtain Nano-meter SiO_22/ clove oil complex；Again by Nano-meter SiO_22/ clove oil complex joins in corn starch solution, and makes mixture mix homogeneously on magnetic stirring apparatus, ultrasonic degasification, thus prepares edibility corn starch antibacterial film coating liquid, by coating liquid casting film-forming, standing, i.e. can get Nano-meter SiO_2 after drying2/ clove oil edibility corn starch antibacterial film.Preparation technology favorable reproducibility of the present invention, Nano-meter SiO_22Higher to clove oil adsorption rate, and product good mechanical property, there is good stability and antibacterial activity.
Description
Technical field
The invention belongs to antibacterial food preservative and food antibacterial fresh-keeping packaging Material Field, be specifically related to one
SiO2The preparation method of/clove oil edibility corn starch antibacterial film coating.
Background technology
Clove oil is clear, colorless or weak yellow liquid, is the fragrance essence extracted from the alabastrum of Caryophyllus, leaf etc.
Oil, allows the flavorant used for China GB2760-2011 " food additive use standard " regulation.Clove oil main
Composition is eugenol, β-Flos Caryophylli alkene, aceteugenol, and methyl-n-amyl ketone, methyl salicylate etc., is a kind of efficiency natural
Plants essential oil, it has good antibacterial, sterilization and antioxidative performance.Because of its safe green, the advantage that has no side effect,
It is made to have preferable application prospect in the exploitation of natural additive for foodstuff.
At present, both at home and abroad existing many about clove oil in the patent Shen in the fields such as food, cosmetics, medical science
Please.CN104178341A discloses the preparation method of a kind of microcapsule clove oil and the application in Nicotiana tabacum L. thereof, belongs to Medicated cigarette and adds
Work technical field；CN101648126A discloses a kind of method utilizing cyclodextrin mother solution to prepare clove oil microcapsules, belongs to fourth
Oleum sesami Micro-Encapsulation Technique field；The clove oil nanometer liposome that CN105030676A provides a kind of high stability is antibacterial
The preparation method of agent, belongs to the antibacterial field of food；CN102258577A provides Oleum Caryophylli, eugenol and derivant thereof in preparation
Purposes in the antagonist of histamine receptor or the medicine of inverse agonist；CN101731328A discloses a kind of clove oil conduct
The application of grain storage pest controlling agent；CN103908494A discloses a kind of fourth osmanthus stomach warming capsule and process of preparing specifically walks
Suddenly；KR20140126466A Korean Patent Publication is a kind of is treated or the side of prevention of otitis media by Flos Caryophylli extract or eugenol
Method.
Although clove oil is widely used at industry fields such as food, cosmetics and medical science, has and preferably kill
The feature such as bacterium, flavouring, but clove oil is unstable, volatile, oxidizable, cause there is effect phase in actual applications short
Problem.So to find effective method to reduce clove oil loss in use, it is ensured that its antibacterial bacteriostatic effect.Beautiful
Clove oil can well be embedded by rice starch film, reduces its volatilization.But through experimental study it was found that jade
Rice starch film is the highest to the embedding rate of clove oil, and therefore we introduce Nano-meter SiO_22.Nano-meter SiO_22For white powder, than
Surface area is big, has preferable adsorptivity, is widely used as food, anti-biotic material and medicine and other fields.CN105169398A discloses
A kind of controlled release system based on mesoporous monox nanometer particle and preparation method thereof；CN102424961A discloses a kind of titanium dioxide
Silicon nano sol-gel coating being scattered in sol system and preparation method thereof；
Based on Nano-meter SiO_22Physiological inertia and height adsorptivity, can solve to lead due to the effumability of clove oil
There is effect phase short problem in actual applications in cause.Pass through Nano-meter SiO_22Absorption clove oil, makes edibility Semen Maydis and forms sediment
Powder antibacterial film coating, is embedded in clove oil in edible film, thus reduces clove oil volatility, reaches the effect of slow release.
Improve its utilization rate, reach long acting antibiotic and the purpose efficiently utilized.
Summary of the invention
It is an object of the invention to open a kind of Nano-meter SiO_22The preparation side of/clove oil edibility corn starch antibacterial film coating
Method.Use Nano-meter SiO_22Absorption clove oil, then both complex are embedded in cornstarch edible film, reduce Flos Caryophylli essence
Oil volatilization in use, makes Nano-meter SiO_22/ clove oil edibility Semen Maydis antibacterial film coating.
The present invention is with corn starch as raw material, with glycerol as plasticizer, using sodium alginate as enhancement component, adds and receives
Rice SiO2/ clove oil complex prepares edibility corn starch antibacterial film coating.
The present invention is first by clove oil and Nano-meter SiO_22Fully dispersed mixing, makes clove oil be adsorbed onto Nano-meter SiO_22On,
Obtain Nano-meter SiO_22/ clove oil complex；Again by Nano-meter SiO_22/ clove oil complex joins in corn starch solution, and
Magnetic stirring apparatus makes mixture mix homogeneously, ultrasonic degasification, thus prepares edibility corn starch antibacterial film coating liquid, will be coated with
Film liquid casting film-forming, standing, i.e. can get Nano-meter SiO_2 after drying2/ clove oil edibility corn starch antibacterial film.
Described fully dispersed mixing is to use magnetic stirring apparatus or fully dispersed mixing under ultrasound condition.
The preparation method of described corn starch solution is as follows: weigh corn starch, joins in deionized water, for the first time
Stirring and evenly mixing, furnishing starch solution；Under gelatinization point, water bath condition, second time stirring makes starch solution generation gel existing
As；Sodium alginate it is sequentially added into as enhancement component, glycerol as plasticizer, on magnetic stirring apparatus in above-mentioned starch solution
Third time stirs, and ultrasonic homogenizing obtains corn starch solution.
Described sodium alginate soaks with deionized water before use so that it is become thick liquid.
Corn starch consumption is the matter that every 100ml deionized water adds 3g corn starch, plasticiser glycerol and corn starch
Amount is 1:3 than the mass ratio for 1:3, enhancement component sodium alginate and corn starch, and mixing speed is 120r/min for the third time, time
Between be 60min；Ultrasonic power is 100Hz, and the time is 30min.
Time of repose is 40min；It is dried and refers to be dried 12h in the constant temperature and humidity drying case of 30 DEG C.
In the edibility corn starch antibacterial film coating of the present invention, the concentration of clove oil is 5mg/mL；Nano-meter SiO_22Concentration
For 5mg/mL (i.e. clove oil and Nano-meter SiO_22Mass ratio be 1:1) time edibility corn starch antibacterial film coating performance
Good.
Described " again by Nano-meter SiO_22/ clove oil complex joins in corn starch solution, and at magnetic stirring apparatus
On make mixture mix homogeneously, ultrasonic degasification " in, mixing speed is similarly 120r/min, and the time is 60min；Ultrasonic power is same
Sample is 100Hz, and the time is 30min.
Accompanying drawing explanation
Fig. 1 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film tensile strength and elongation at break.
Fig. 2 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film surface roughness.
Fig. 3 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film skin-friction coefficient.
Fig. 4 Nano-meter SiO_22/ clove oil edibility corn starch the antibacterial film coating antibacterial effect to E.coli O157:H7.
Fig. 5 Nano-meter SiO_22/ clove oil edibility corn starch the antibacterial film coating antibacterial effect to staphylococcus aureus.
Fig. 6 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film coating is to escherichia coli antibacterial effect.
Fig. 7 Nano-meter SiO_22/ clove oil edibility corn starch the antibacterial film coating antibacterial effect to Salmonella enteritidis.
Detailed description of the invention
The detailed description of the invention of the present invention is described by Examples below, but the protection content of the present invention, it is not only limited to this.
Embodiment 1 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film tensile strength and the mensuration of elongation at break
1 experiment material
2 experimental techniques
1. weighing 3g corn starch, join in 100mL deionized water, stirring and evenly mixing, furnishing starch solution, in gelatinizing temperature
Spend stirring 30min under 90 DEG C of water bath condition so that starch solution generation gelatin phenomenon.
2. in above-mentioned solution, 1g sodium alginate is added as enhancement component (before use with a little deionization water logging
Bubble so that it is become thick liquid), 1g glycerol is as plasticizer.On magnetic stirring apparatus, stirring makes mixture mix homogeneously, stirring
Speed is 120r/min, and the time is 60min, and ultrasonic degasification, power 100Hz, and the time is 30min.
3. by the clove oil of 50mg and a certain amount of Nano-meter SiO_22Ultrasonic mixing in centrifuge tube, power is 100Hz, time
Between be 60min.Nano-meter SiO_22Addition according to clove oil/Nano-meter SiO_22Doping adds than the ratio for 2:1,1:0,1:1,1:2
Enter.Again complex is added in above-mentioned corn starch solution, magnetic stirring apparatus stirs, makes mixture mix homogeneously, stirring
Speed is 120r/min, and the time is 60min.And ultrasonic disperse removes the gas in coating solution system, power is 100Hz, the time
For 30min.I.e. can get nanosized SiO_2/clove oil edible starch antibacterial film coating liquid.
4. by the above-mentioned liquid prepared, it is poured in vessel, casting film-forming, stands 40min, in the constant temperature and humidity of 30 DEG C
Drying baker is dried 12h, i.e. can get Nano-meter SiO_22/ clove oil edible starch antibacterial film.
3 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film tensile strength and the mensuration of elongation at break
The Nano-meter SiO_2 that will prepare2/ clove oil edibility corn starch antibacterial film is cut into the length of 1cm × 3cm size
Square, measure its tensile strength and elongation at break.
Film tensile strength (Mpa)=pulling force (N)/cross-sectional area (m2)；
Film elongation at break=(length at break-raw footage)/raw footage × 100%.
4 Nano-meter SiO_22The tensile strength of/clove oil edibility corn starch antibacterial film and elongation at break
Tensile strength and elongation at break are important indicators of the mechanical strength size characterizing antibacterial film.By Fig. 1
Understand, when clove oil and Nano-meter SiO_22Doping mass ratio when being 1:1, corn starch antibacterial film has preferable mechanicalness
Energy.
When the doping mass ratio of clove oil and nanosized SiO_2 is 1:1, corn starch antibacterial film has preferable mechanicalness
Energy.Herein preferably mechanical performance and the concentration of clove oil be 5mg/mL be closely-related because the interpolation of clove oil
Measure thickness, hot strength, elongation at break, water solublity, stability and anti-microbial property to edible film all can produce necessarily
Impact.Draw through our many experiments, when the concentration of clove oil is 5mg/mL, the mechanical performance of corn starch antibacterial film
Preferable with anti-microbial property.
Embodiment 2 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film surface roughness and skin-friction coefficient
Mensuration
1 experiment material
Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film
2 experimental techniques
1) mensuration of antibacterial film surface roughness
1. the Nano-meter SiO_2 that will prepare2/ clove oil edibility corn starch antibacterial film (specification is 10mm × 10mm),
It is placed on the workbench of surfagauge (SRM-1 (D) type), measures the roughness Ra on film surface.
2. sensor is adjusted so that it is reach to be parallel to the position of coating.Check that tested surface is the best with contacting of sensor
Good.
3. starting measuring instrument, sensor produces and slides, and does linear uniform motion, stops according to after setpoint distance back and forth movement
Only motion.
4. the micro-profile of coating surface depicted by measuring instrument, draws the floating motion curve relative to datum line.
5. signal acquiring system and arithmetic processing system and in measured instrument obtain gathering operation result, obtain antibacterial
The roughness value on film surface.
2) mensuration of antibacterial film skin-friction coefficient
Coefficient of friction refer to two surfaces frictional force its act on the ratio of vertical force on the contact surface.Coefficient of friction and table
The roughness in face is relevant, and unrelated with contact area size, can be divided into dynamic friction and static friction.The friction system of antibacterial film
Number is not only relevant with surface roughness, and relevant with the performance of antibacterial film and state (soak, be dried) etc..This experiment uses tiltedly
Face friction coefficient instrument measures Nano-meter SiO_22The coefficient of friction on/clove oil edibility corn starch antibacterial film surface.
3 Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film surface roughness and skin-friction coefficient
From Fig. 2 and Fig. 3, clove oil is the edibility Semen Maydis made during 1:1 with the doping mass ratio of nanosized SiO_2
Surface roughness and the skin-friction coefficient of starch antibacterial film are moderate, and if surface roughness is excessive, U.S. of product can be affected
See and quality.Further according to embodiment 1, when the doping mass ratio of clove oil and nanosized SiO_2 is 1:1, corn starch antibacterial film
There is preferable tensile strength and elongation at break.Therefore, comprehensively analyzing, clove oil with the doping mass ratio of nanosized SiO_2 is
During 1:1, prepared edibility corn starch antibacterial film performance is best.
Embodiment 3 Nano-meter SiO_22The mensuration of/clove oil edibility corn starch antibacterial film water absorption rate
1 experiment material
Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film
2 experimental techniques
By Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film is cut into the square film of 2cm × 2cm size
Sheet, puts in weighing botle, is dried 2h and makes film be dried without moisture, use analytical balance correct amount in 35 DEG C of thermostatic drying chambers,
Now diaphragm weight is designated as W0, it is then placed in distilled water soaking 2h and makes film water suction completely, suck surface moisture with filter paper, claim
Weight, now diaphragm weight is designated as Wd, repeating this and operate to constant weight, the computing formula of water absorption rate Q is as follows:
Q=(Wd-W0)/W0× 100%
3 Nano-meter SiO_22The water absorption rate of/clove oil edibility corn starch antibacterial film
The water absorption rate size of film is the direct determiner of the hydrophobicity quality of film.For conventional packaging material, water suction
Rate is the least, more meets its packaging demand, but, for film packaging material, the water absorption rate of appropriateness, people can be met to instant
Instant packed requirement.It is computed, the Nano-meter SiO_2 that this experiment prepares2The water suction of/clove oil edibility corn starch antibacterial film
Rate is 45%, and its water soluble is described, meets instant instant packed basic demand.
Embodiment 4 Nano-meter SiO_22The mensuration of/clove oil edibility corn starch antibacterial film coating anti-microbial property
1 experiment material
Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film coating
Fresh beef
Strain: E.coli O157:H7, staphylococcus aureus, escherichia coli, Salmonella enteritidis
2 experimental techniques
This experiment is with E.coli O157:H7, staphylococcus aureus, Salmonella enteritidis and escherichia coli for pattern bacterium
Kind, respectively to Nano-meter SiO_22The fresh keeping property of/clove oil edibility corn starch antibacterial film coating is measured.
As a example by E.coli O157:H7, E.coli O157:H7 is inoculated in fluid medium, is placed in air table
24h is cultivated in middle concussion, and condition of culture is 37 DEG C, 150rpm, it is thus achieved that the bacteria suspension of exponential phase.Take and be in logarithmic (log) phase in right amount
E.coli O157:H7 addition is containing in the test tube of a certain amount of sterile phosphate buffer (PBS), (now bacterial concentration is about 105
～106CFU/mL)。
Beef being cut into 30 × 25 × 5mm size, and carries out ultraviolet-sterilization (or radiation sterilizing), tow sides respectively process
1h.Beef sample ultraviolet processed is dipped in and is diluted to 10 in advance5～106In the E.coli O157:H7 bacteria suspension of CFU/mL
15s。
Subsequently beef sample is taken out from bacterium solution, dry under gnotobasis, use dip coating, the beef after bacterium will be connect
Sample impregnated in the Nano-meter SiO_2 prepared in advance2In/clove oil edibility corn starch antibacterial film coating liquid, negative control group
Using blank edibility corn starch antibacterial film coating liquid, positive controls uses containing only clove oil without Nano-meter SiO_22Jade
In rice starch antibacterial film coating liquid, impregnate 20min.Dry under gnotobasis after taking-up, be then transferred in aseptic homogenizing bag, 25 DEG C
Seal after placing 0h, 24h and 48h, measure the total number of bacteria in beef sample respectively.Assay method is according to GB4789.2 2010
Food hygiene microbiologic inhibition tests total plate count is carried out.To equipped with the aseptic phosphorus adding 9 times in the aseptic homogenizing bag of beef sample
Acid buffer (PBS), homogenizing.Remaining bacterium number after using colony counting method to measure 25 DEG C of constant temperature culture 0h, 24h and 48h.Experiment
In triplicate, results averaged.
3 Nano-meter SiO_22The anti-microbial property of/clove oil edibility corn starch antibacterial film coating
From Fig. 4, Fig. 5, Fig. 6, Fig. 7 clearly, Nano-meter SiO_2 is added2Edibility corn starch antibacterial film coating to beef
In E.coli O157:H7, staphylococcus aureus, escherichia coli and Salmonella enteritidis there is higher antibacterial activity, and
Clove oil is had obvious slow releasing function, thus there is long-acting antibacterial activity and more preferable bactericidal effect.
Claims (8)
1. a SiO2The preparation method of/clove oil edibility corn starch antibacterial film coating, it is characterised in that: first by Flos Caryophylli
Quintessence oil and Nano-meter SiO_22Fully dispersed mixing, makes clove oil be adsorbed onto Nano-meter SiO_22On, obtain Nano-meter SiO_22/ clove oil is multiple
Compound；Again by Nano-meter SiO_22/ clove oil complex joins in corn starch solution, and makes mixture on magnetic stirring apparatus
Mix homogeneously, ultrasonic degasification, thus prepare edibility corn starch antibacterial film coating liquid, by coating liquid casting film-forming, stand, be dried
After i.e. can get Nano-meter SiO_22/ clove oil edibility corn starch antibacterial film.
2. a kind of SiO as claimed in claim 12The preparation method of/clove oil edibility corn starch antibacterial film coating, it is special
Levy and be: described fully dispersed mixing is to use magnetic stirring apparatus or fully dispersed mixing under ultrasound condition.
3. a kind of SiO as claimed in claim 12The preparation method of/clove oil edibility corn starch antibacterial film coating, it is special
Levying and be, the preparation method of described corn starch solution is as follows: weigh corn starch, joins in deionized water, for the first time
Stirring and evenly mixing, furnishing starch solution；Under gelatinization point, water bath condition, second time stirring makes starch solution generation gel existing
As；Sodium alginate it is sequentially added into as enhancement component, glycerol as plasticizer, on magnetic stirring apparatus in above-mentioned starch solution
Third time stirs, and ultrasonic homogenizing obtains corn starch solution.
4. a kind of SiO as claimed in claim 32The preparation method of/clove oil edibility corn starch antibacterial film coating, it is special
Levy and be: described sodium alginate soaks with deionized water before use so that it is become thick liquid.
5. a kind of SiO as claimed in claim 32The preparation method of/clove oil edibility corn starch antibacterial film coating, it is special
Levy and be: corn starch consumption is the quality that every 100ml deionized water adds 3g corn starch, plasticiser glycerol and corn starch
Being 1:3 than the mass ratio for 1:3, enhancement component sodium alginate and corn starch, mixing speed is 120r/min for the third time, the time
For 60min；Ultrasonic power is 100Hz, and the time is 30min.
6. a kind of SiO as claimed in claim 12The preparation method of/clove oil edibility corn starch antibacterial film coating, it is special
Levy and be: time of repose is 40min；It is dried and refers to be dried 12h in the constant temperature and humidity drying case of 30 DEG C.
7. a kind of SiO as claimed in claim 12The preparation method of/clove oil edibility corn starch antibacterial film coating, it is special
Levy and be: in edibility corn starch antibacterial film coating, the concentration of clove oil is 5mg/mL；Nano-meter SiO_22Concentration be 5mg/mL；
Clove oil and Nano-meter SiO_22Mass ratio when being 1:1, the performance of edibility corn starch antibacterial film coating is optimal.
8. a kind of SiO as claimed in claim 12The preparation method of/clove oil edibility corn starch antibacterial film coating, it is special
Levying and be: mixing speed is similarly 120r/min, the time is 60min；Ultrasonic power is similarly 100Hz, and the time is 30min.
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| CN113150397A (en) * | 2021-04-20 | 2021-07-23 | 山东理工大学 | Preparation method of potato starch sustained-release antibacterial film |
| CN113736145A (en) * | 2021-10-19 | 2021-12-03 | 广州暨明科技有限公司 | Composite material capable of slowly releasing antibacterial ingredients, preparation method thereof and antibacterial slow release bag |
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| CN110200066A (en) * | 2019-05-07 | 2019-09-06 | 重庆市中药研究院 | A kind of capsule of nano antistaling agent and preparation method and application |
| CN110200065A (en) * | 2019-05-07 | 2019-09-06 | 重庆市中药研究院 | A kind of fresh tremella bacteria reducing film and cold chain preservation method |
| CN113150397A (en) * | 2021-04-20 | 2021-07-23 | 山东理工大学 | Preparation method of potato starch sustained-release antibacterial film |
| CN113736145A (en) * | 2021-10-19 | 2021-12-03 | 广州暨明科技有限公司 | Composite material capable of slowly releasing antibacterial ingredients, preparation method thereof and antibacterial slow release bag |
| CN114287473A (en) * | 2021-12-17 | 2022-04-08 | 南昌大学 | Method for preserving fresh-cut pineapples |
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| CN106118260B (en) | 2018-12-14 |
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