CN104939269A - Edible composite sodium alginate antibacterial film liquid as well as preparation method and application thereof - Google Patents
Edible composite sodium alginate antibacterial film liquid as well as preparation method and application thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
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- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
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Abstract
The invention discloses edible composite sodium alginate antibacterial film liquid as well as a preparation method and application thereof. The edible composite sodium alginate antibacterial film liquid is characterized in that by taking a sodium alginate solution with the mass concentration of 1%-4% as a film base solution, glycerin accounting for 0.5%-1.5% of the film base solution by mass, epsilon-polylysine accounting for 0.15% -0.5% of the film base solution by mass and shaddock peel nanofiber accounting for 0.15%-0.25% of the film base solution by mass are added, citric acid is added to adjust the pH value of the solution to 5-6 and then uniform mixing is carried out; the preparation method comprises the following steps: sodium alginate solution preparation, shaddock peel nanofiber preparation and composite sodium alginate antibacterial film liquid preparation. The edible composite sodium alginate antibacterial film liquid can be used for fresh keeping of fresh-frozen ducks and has the advantages that moisture permeability of a film can be reduced, so that water loss of the duck meat is controlled and a biological antibacterial agent contained in the edible composite sodium alginate antibacterial film liquid can restrain the growing of putrefying bacteria in the fresh-frozen ducks. Therefore, color, luster and flavor of duck meat can be kept, and the shelf life of the fresh-frozen duct is prolonged.
Description
Technical field
The present invention relates to a kind of edibility antibacterial film, especially relate to a kind of edibility complex sodium alginate antibacterial film liquid and its preparation method and application.
Background technology
Sodium alginate is a kind of is the linear polymeric polysaccharide that the uronic acid monomer extracted from sea-tangle forms, except serving as thickener in food industry and stabilizing agent, now testedly be used as the auxiliary material such as artificial casing, food fresh keeping membrane, there is the effect slowing down food water loss and suppress microbial contamination, and it is with low cost, to be applied in food fresh keeping packaging not only environmental protection but to human body without any toxic action, the range of application of marine resources in existing market can be expanded.
Epsilon-polylysine is a kind of by the mass-produced amino acid either homopolymers of microorganism, the homopolymers that it forms phthalein amine key by essential amino acid 1B at Alpha-hydroxy and beta-amino and connects into.Epsilon-polylysine has broad-spectrum antibacterial, has the advantages such as security performance is high, good water solubility, Heat stability is good.Shaddock is Rutaceae citrus fruit.Shaddock ped accounts for 43% ~ 48% of whole shaddock, except the nutrient containing moisture, vitamin, these needed by human of mineral matter, also containing the multiple non-nutritive physiologically active ingredient useful to health, the domestic and international research to shaddock ped at present mainly concentrates on the extraction and application of pectin in shaddock ped, more rare to report cellulosic in shaddock ped.
Chilled duck, is again cooling duck, refers to through veterinary inspector, confirms healthy anosis, after butchering, cooled down very soon by meat in the slaughterhouse of state approval, then carries out splitting, picks a bone, packs, and the duck stored at low temperatures all the time, transport.Chilled duck more freezing duck, hot fresh duck in local flavor, nutrition and mouthfeel etc. have a clear superiority in, and are the important raw and processed materials making the prepared food such as stewed duck with bean sauce, Roast duck, roast duck, have very wide consumption market.But in the storage, transportation of chilled duck, because refrigerated storage temperature can not suppress microbial growth completely, add cold chain system domestic at present not on a large scale, fresh-keeping effect is unsatisfactory.Preservation technique for chilled duck has that high pressure is fresh-keeping, radiation preservation, chemical fresh-keeping method etc., these method and technologies are strong, cost is high, the toxic of residuals requires study and fresh-keeping effect is very unstable.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of moisture transmitance reducing film, suppresses edibility complex sodium alginate antibacterial film liquid of spoilage organisms growth and its preparation method and application.
The present invention solves the problems of the technologies described above adopted technical scheme:
1, a kind of edibility complex sodium alginate antibacterial film liquid, take mass concentration as the sodium alginate soln of 1% ~ 4% be liquid at the bottom of film, add the glycerine of liquid quality 0.5% ~ 1.5% at the bottom of film, the epsilon-polylysine of 0.15% ~ 0.5%, the pomelo peel nanofiber of 0.15% ~ 0.25%, and after adding citric acid regulating solution pH value to 5 ~ 6, mix and obtain edibility complex sodium alginate antibacterial film liquid.
2, a preparation method for edibility complex sodium alginate antibacterial film liquid, specifically comprises the following steps:
(1) preparation of sodium alginate soln: by soluble in water for the sodium alginate of certain mass, at 50-70 DEG C, continuous stirring and dissolving is mixed with the sodium alginate soln that mass concentration is 1% ~ 4%;
(2) preparation of pomelo peel nanofiber: pulverized 200 mesh sieves after being dried by pomelo peel, takes the shaddock peel powder of certain mass, takes soda acid high-temp extracting method to obtain microcrystalline cellulose, is then hydrolyzed microcrystalline cellulose with the concentrated sulfuric acid, obtain pomelo peel nanofiber;
(3) preparation of complex sodium alginate antibacterial film liquid: the sodium alginate soln obtained with step (1) is liquid at the bottom of film, add the glycerine of liquid quality 0.5% ~ 1.5% at the bottom of film, stir, then the epsilon-polylysine of liquid quality 0.15% ~ 0.5% at the bottom of film is added, continuous stirring, the pomelo peel nanofiber slowly adding liquid quality 0.15% ~ 0.25% at the bottom of film again continues to stir, finally use citric acid adjust ph to 5 ~ 6, then ultrasonic washing instrument is placed in, ultrasonic 25-35min under the condition of power 250-350w, each composition is made fully to mix and remove bubble, namely edibility complex sodium alginate antibacterial film liquid is obtained.
The preparation method of step (2) pomelo peel nanofiber is specific as follows: the mass concentration that shaddock peel powder is dipped in 95 DEG C in the ratio of solid-liquid mass ratio 1:20 is stir 2h in the hydrochloric acid solution of 5%, cross leaching filter residue wash with water to neutrality and dry, the mass concentration again filter residue of oven dry being dipped in 80 DEG C in the ratio of solid-liquid mass ratio 1:20 is stir 2h in the sodium hydroxide solution of 2%, crosses leaching filter residue and washes with water to neutrality and obtain microcrystalline cellulose, it is in the concentrated sulfuric acid solution of 62-66% that microcrystalline cellulose is joined mass concentration in the ratio of solid-liquid mass ratio 1:20, be hydrolyzed mixed solution mechanical agitation 35-45min in the water-bath of 60 DEG C reaction, mixed solution 10 times of volumes of deionized water cessation reactions are added after hydrolysis terminates, then hydrolyzate is placed in ultrasonic washing instrument under power 300-400w condition after ultrasonic 25-35min, again under 12000r/min rotating speed centrifugal to supernatant be light blue colloidal, get its supernatant, room temperature to be positioned in freeze drier dry 48h at-50 DEG C after dialysing and removing heteroion in 5 days, obtain pomelo peel nanofiber powder.Nanofiber recovery rate in shaddock peel powder is 16.7%, and purity is 97.2%.
A kind of application of edibility complex sodium alginate antibacterial film liquid, this is applied as the method for the fresh-keeping chilled duck of edibility complex sodium alginate antibacterial film liquid described in utilization, concrete steps are as follows: by the fresh duck butchered, in 0.5h, central temperature is down to 8 DEG C, and the edibility complex sodium alginate antibacterial film liquid being placed in rapidly 4 DEG C soaks 1 ~ 5min; After taking-up is dried, the mass concentration again immersing 4 DEG C is carry out the crosslinked 1 ~ 3min of film forming in the calcium chloride solution of 1% ~ 3%, pulls out and drains, form one deck preservative film, be finally placed in Cool Room 4 DEG C and refrigerate on fresh duck surface.Because sodium alginate is a kind of linear polymeric; three segments are had to be formed by connecting by glycosidic bond; divalent calcium ions carries out ionic compartmentation at the carboxyl position of its side; the alginic acid of another side chain also can be connected with calcium ion; thus formed crosslinked; in strengthening membrane liquid, the intermolecular interaction of sodium alginate, forms diaphragm further.
Compared with prior art, the invention has the advantages that: a kind of edibility complex sodium alginate of the present invention antibacterial film liquid and its preparation method and application, this film liquid take sodium alginate as filmogen, add glycerine as plasticizer, epsilon-polylysine is as antiseptic, pomelo peel nanofiber is as reinforcing agent, edibility complex sodium alginate antibacterial film liquid primary raw material prepared by the method and auxiliary material are Edible material, wherein sodium alginate wide material sources and cheap, as source, ocean macromolecule polysaccharide, sodium alginate has reduction serum cholesterol, slow down the absorption of fat sugar and cholate in blood, preventing hypertension, diabetes, the diseases such as obesity, due to the OH provided in nanofiber molecule
-can with the NH of epsilon-polylysine
3+form interionic interaction, strengthen the bonding state of epsilon-polylysine and film liquid, therefore, the biogenic epsilon-polylysine of use has broad spectrum antibacterial and pomelo peel nanofiber combines, the lasting release of antiseptic can be strengthened, better play fungistatic effect, simultaneously because micromolecular nanofiber can infiltrate in film liquid molecule completely, the hydrogen bond action produced makes membrane molecule compacter, pomelo peel nanofiber add the moisture transmitance that can reduce single Sodium Alginate Coating, slow down the water loss of duck, be applied to chilled duck fresh-keeping on, environmental protection, pollution-free, effectively can extend the shelf life of chilled duck, and additional nutritive value can be brought for consumable products crowd.
In sum, the nanofiber that edibility complex sodium alginate antibacterial film liquid of the present invention contains can reduce the moisture transmitance of film thus the water loss in control duck, the biological antibiosis agent contained, the growth of spoilage organisms in chilled duck can be suppressed, thus keep color and luster and the local flavor of duck, extend the shelf life of chilled duck.
Further because the present invention adopts rational Chemical Decomposition method to carry out extraction purification to the cellulose in shaddock ped, the nanofiber recovery rate in shaddock peel powder is 16.7%, and the purity of nanofiber is 97.2%.Adopt the lixiviate of high temperature soda acid, substantially reduce the cellulosic processing time, operating procedure is simple, and use amount of reagent less, environmentally safe, cost is low, for the recycling of pomelo peel and the approach of preparing of nanofiber provide new approaches.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Specific embodiment
Embodiment 1
A kind of edibility complex sodium alginate antibacterial film liquid, take mass concentration as the sodium alginate soln of 2% be liquid at the bottom of film, add the glycerine of liquid quality 1% at the bottom of film, the epsilon-polylysine of 0.3%, the pomelo peel nanofiber of 0.2%, and after adding citric acid regulating solution pH value to 5.5, mix, its preparation method specifically comprises the following steps:
(1) preparation of sodium alginate soln: the sodium alginate of 2g is dissolved in 1000ml water, at 60 DEG C, continuous stirring and dissolving is mixed with the sodium alginate soln that mass concentration is 2%;
(2) preparation of pomelo peel nanofiber: pulverized 200 mesh sieves after being dried by pomelo peel, takes the shaddock peel powder of certain mass, takes soda acid high-temp extracting method to obtain microcrystalline cellulose, is then hydrolyzed microcrystalline cellulose with the concentrated sulfuric acid, obtain pomelo peel nanofiber, preparation method is specific as follows: the mass concentration that shaddock peel powder is dipped in 95 DEG C in the ratio of solid-liquid mass ratio 1:20 is stir 2h in the hydrochloric acid solution of 5%, cross leaching filter residue wash with water to neutrality and dry, the mass concentration again filter residue of oven dry being dipped in 80 DEG C in the ratio of solid-liquid mass ratio 1:20 is stir 2h in the sodium hydroxide solution of 2%, crosses leaching filter residue and washes with water to neutrality and obtain microcrystalline cellulose, it is in the concentrated sulfuric acid solution of 62-66% that microcrystalline cellulose is joined mass concentration in the ratio of solid-liquid mass ratio 1:20, be hydrolyzed mixed solution mechanical agitation 40min in the water-bath of 60 DEG C reaction, mixed solution 10 times of volumes of deionized water cessation reactions are added after hydrolysis terminates, then hydrolyzate is placed in ultrasonic washing instrument under power 350w condition after ultrasonic 30min, again under 12000r/min rotating speed centrifugal to supernatant be light blue colloidal, get its supernatant, room temperature to be positioned in freeze drier dry 48h at-50 DEG C after dialysing and removing heteroion in 5 days, obtain pomelo peel nanofiber powder,
(3) preparation of complex sodium alginate antibacterial film liquid: the sodium alginate soln obtained with step (1) is liquid at the bottom of film, add the glycerine of liquid quality 1% at the bottom of film, stir, then the epsilon-polylysine of liquid quality 0.3% at the bottom of film is added, continuous stirring, the pomelo peel nanofiber slowly adding liquid quality 0.2% at the bottom of film again continues to stir, finally use citric acid adjust ph to 5.5, then ultrasonic washing instrument is placed in, ultrasonic 30min under the condition of power 300w, make each composition fully mix and remove bubble, namely obtain edibility complex sodium alginate antibacterial film liquid.
Embodiment 2
With above-described embodiment 1, its difference is:
Take mass concentration as the sodium alginate soln of 1% be liquid at the bottom of film, add the glycerine of liquid quality 0.5% at the bottom of film, the epsilon-polylysine of 0.15%, the pomelo peel nanofiber of 0.15%, and after adding citric acid regulating solution pH value to 5, mix, its concrete preparation method distinguishes as follows:
In the preparation of step (1) sodium alginate soln: be dissolved in by the sodium alginate of 1g in 1000ml water, at 50 DEG C, continuous stirring and dissolving is mixed with the sodium alginate soln that mass concentration is 1%;
In the preparation of step (2) pomelo peel nanofiber: microcrystalline cellulose being joined mass concentration is to be hydrolyzed after reaction 35min under power 300w condition after ultrasonic 35min in the concentrated sulfuric acid solution of 62%, its supernatant of centrifuging and taking again, room temperature dialysis postlyophilization;
In the preparation of step (3) complex sodium alginate antibacterial film liquid: the sodium alginate soln obtained with step (1) is liquid at the bottom of film, add the glycerine of liquid quality 0.5% at the bottom of film, stir, then the epsilon-polylysine of liquid quality 0.15% at the bottom of film is added, continuous stirring, then the pomelo peel nanofiber slowly adding liquid quality 0.15% at the bottom of film continues to stir, and finally uses citric acid adjust ph to 5, then ultrasonic washing instrument is placed in, ultrasonic 35min under the condition of power 250w.
Embodiment 3
With above-described embodiment 1, its difference is:
Take mass concentration as the sodium alginate soln of 4% be liquid at the bottom of film, add the glycerine of liquid quality 1.5% at the bottom of film, the epsilon-polylysine of 0.5%, the pomelo peel nanofiber of 0.25%, and after adding citric acid regulating solution pH value to 6, mix, its concrete preparation method distinguishes as follows:
In the preparation of step (1) sodium alginate soln: be dissolved in by the sodium alginate of 4g in 1000ml water, at 70 DEG C, continuous stirring and dissolving is mixed with the sodium alginate soln that mass concentration is 1%;
In the preparation of step (2) pomelo peel nanofiber: microcrystalline cellulose being joined mass concentration is to be hydrolyzed after reaction 45min under power 400w condition after ultrasonic 25min in the concentrated sulfuric acid solution of 66%, its supernatant of centrifuging and taking again, room temperature dialysis postlyophilization;
In the preparation of step (3) complex sodium alginate antibacterial film liquid: the sodium alginate soln obtained with step (1) is liquid at the bottom of film, add the glycerine of liquid quality 1.5% at the bottom of film, stir, then the epsilon-polylysine of liquid quality 0.5% at the bottom of film is added, continuous stirring, the pomelo peel nanofiber slowly adding liquid quality 0.25% at the bottom of film again continues to stir, and finally uses citric acid adjust ph to 6, is then placed in ultrasonic washing instrument ultrasonic 25min under the condition of power 350w.
Application Example
Thorax, epilation is drawn after being killed by duck alive passing inspection and quarantine, in 0.5h, central temperature is down to 8 DEG C, the edibility complex sodium alginate antibacterial film liquid that the above-described embodiment 1,2 or 3 being placed in rapidly 4 DEG C prepares soaks 1 ~ 5min, after taking-up is dried, the mass concentration immersing 4 DEG C is again that the calcium chloride solution of 1-3% is cross-linked 1-3min, again take out and drain, form one deck preservative film on fresh duck surface, the chilled duck of surface being wrapped film is placed in Cool Room 4 DEG C and refrigerates.
Above-mentioned sodium alginate is food-grade, and range of viscosities is at 100 ~ 300mpa.s, and above-mentioned calcium chloride, glycerine, pomelo peel nanofiber, citric acid, epsilon-polylysine are food-grade, is purchased from Zhejiang Yin Xiang Science and Technology Ltd..
Above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned citing.Those skilled in the art are in essential scope of the present invention, and the change made, remodeling, interpolation or replacement, also should belong to protection scope of the present invention, protection scope of the present invention is as the criterion with claims.
Claims (4)
1. an edibility complex sodium alginate antibacterial film liquid, it is characterized in that: take mass concentration as the sodium alginate soln of 1% ~ 4% be liquid at the bottom of film, add the glycerine of liquid quality 0.5% ~ 1.5% at the bottom of film, the epsilon-polylysine of 0.15% ~ 0.5%, the pomelo peel nanofiber of 0.15% ~ 0.25%, and after adding citric acid regulating solution pH value to 5 ~ 6, mix and obtain edibility complex sodium alginate antibacterial film liquid.
2. a preparation method for edibility complex sodium alginate antibacterial film liquid according to claim 1, is characterized in that specifically comprising the following steps:
(1) preparation of sodium alginate soln: by soluble in water for the sodium alginate of certain mass, at 50-70 DEG C, continuous stirring and dissolving is mixed with the sodium alginate soln that mass concentration is 1% ~ 4%;
(2) preparation of pomelo peel nanofiber: pulverized 200 mesh sieves after being dried by pomelo peel, takes the shaddock peel powder of certain mass, takes soda acid high-temp extracting method to obtain microcrystalline cellulose, is then hydrolyzed microcrystalline cellulose with the concentrated sulfuric acid, obtain pomelo peel nanofiber;
(3) preparation of complex sodium alginate antibacterial film liquid: the sodium alginate soln obtained with step (1) is liquid at the bottom of film, add the glycerine of liquid quality 0.5% ~ 1.5% at the bottom of film, stir, then the epsilon-polylysine of liquid quality 0.15% ~ 0.5% at the bottom of film is added, continuous stirring, the pomelo peel nanofiber slowly adding liquid quality 0.15% ~ 0.25% at the bottom of film again continues to stir, finally use citric acid adjust ph to 5 ~ 6, then ultrasonic washing instrument is placed in, ultrasonic 25-35min under the condition of power 250-350w, each composition is made fully to mix and remove bubble, namely edibility complex sodium alginate antibacterial film liquid is obtained.
3. the preparation method of a kind of edibility complex sodium alginate antibacterial film liquid according to claim 2, it is characterized in that the preparation method of step (2) pomelo peel nanofiber is specific as follows: the mass concentration that shaddock peel powder is dipped in 95 DEG C in the ratio of solid-liquid mass ratio 1:20 is stir 2h in the hydrochloric acid solution of 5%, cross leaching filter residue wash with water to neutrality and dry, the mass concentration again filter residue of oven dry being dipped in 80 DEG C in the ratio of solid-liquid mass ratio 1:20 is stir 2h in the sodium hydroxide solution of 2%, crosses leaching filter residue and washes with water to neutrality and obtain microcrystalline cellulose, it is in the concentrated sulfuric acid solution of 62-66% that microcrystalline cellulose is joined mass concentration in the ratio of solid-liquid mass ratio 1:20, be hydrolyzed mixed solution mechanical agitation 35-45min in the water-bath of 60 DEG C reaction, mixed solution 10 times of volumes of deionized water cessation reactions are added after hydrolysis terminates, then hydrolyzate is placed in ultrasonic washing instrument under power 300-400w condition after ultrasonic 25-35min, again under 12000r/min rotating speed centrifugal to supernatant be light blue colloidal, get its supernatant, room temperature to be positioned in freeze drier dry 48h at-50 DEG C after dialysing and removing heteroion in 5 days, obtain pomelo peel nanofiber powder.
4. the application of an edibility complex sodium alginate antibacterial film liquid according to claim 1, it is characterized in that this is applied as the method for the fresh-keeping chilled duck of edibility complex sodium alginate antibacterial film liquid utilized described in claim 1, concrete steps are as follows: by the fresh duck butchered, in 0.5h, central temperature is down to 8 DEG C, and the edibility complex sodium alginate antibacterial film liquid being placed in rapidly 4 DEG C soaks 1 ~ 5min; After taking-up is dried, then the mass concentration being placed in 4 DEG C is the calcium chloride solution immersion 1 ~ 3min of 1% ~ 3%, pulls out and drains, and forms one deck preservative film, be finally placed in Cool Room 4 DEG C and refrigerate on fresh duck surface.
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| CN106306004A (en) * | 2016-08-25 | 2017-01-11 | 济南利雯农业开发有限公司 | Film preservative of coprinus comatus and using method thereof |
| CN106962806A (en) * | 2017-05-17 | 2017-07-21 | 天津众品食业有限公司 | A kind of processing method of Pisi class product |
| CN107396956A (en) * | 2017-08-10 | 2017-11-28 | 兰溪市捷喜食品加工技术有限公司 | Reinforcing agent for casing and preparation method thereof |
| CN110833093A (en) * | 2019-11-27 | 2020-02-25 | 武汉轻工大学 | Antibacterial preservative film and application thereof in duck meat preservation |
| CN111118878A (en) * | 2020-01-15 | 2020-05-08 | 河南驼人贝斯特医疗器械有限公司 | Silver ion alginate wound dressing and preparation method thereof |
| CN114702708A (en) * | 2022-04-06 | 2022-07-05 | 江南大学 | Antibacterial material with wide pH application range and preparation method and application thereof |
| CN114702708B (en) * | 2022-04-06 | 2023-01-03 | 江南大学 | Antibacterial material with wide pH application range and preparation method and application thereof |
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