CN111280249A - Preservative based on cypress oil alcohol and magnolia polyphenol and preparation method thereof - Google Patents
Preservative based on cypress oil alcohol and magnolia polyphenol and preparation method thereof Download PDFInfo
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- CN111280249A CN111280249A CN202010206001.7A CN202010206001A CN111280249A CN 111280249 A CN111280249 A CN 111280249A CN 202010206001 A CN202010206001 A CN 202010206001A CN 111280249 A CN111280249 A CN 111280249A
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- polyphenol
- cypress oil
- oil alcohol
- magnolia
- film forming
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 239000010639 cypress oil Substances 0.000 title claims abstract description 82
- 150000008442 polyphenolic compounds Chemical class 0.000 title claims abstract description 82
- 235000013824 polyphenols Nutrition 0.000 title claims abstract description 82
- 239000003755 preservative agent Substances 0.000 title claims abstract description 33
- 230000002335 preservative effect Effects 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 241000218378 Magnolia Species 0.000 title claims description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 55
- 239000002562 thickening agent Substances 0.000 claims abstract description 47
- 238000003756 stirring Methods 0.000 claims abstract description 43
- 241001673966 Magnolia officinalis Species 0.000 claims abstract description 40
- 239000000243 solution Substances 0.000 claims abstract description 34
- 239000007864 aqueous solution Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000001476 alcoholic effect Effects 0.000 claims abstract description 23
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 229920001661 Chitosan Polymers 0.000 claims description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 108010010803 Gelatin Proteins 0.000 claims description 7
- 239000008273 gelatin Substances 0.000 claims description 7
- 229920000159 gelatin Polymers 0.000 claims description 7
- 235000019322 gelatine Nutrition 0.000 claims description 7
- 235000011852 gelatine desserts Nutrition 0.000 claims description 7
- 229920001817 Agar Polymers 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920000954 Polyglycolide Polymers 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 5
- 239000008272 agar Substances 0.000 claims description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 5
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 239000004633 polyglycolic acid Substances 0.000 claims description 5
- 239000004626 polylactic acid Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 5
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 5
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 5
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 5
- 239000005909 Kieselgur Substances 0.000 claims description 3
- 235000012055 fruits and vegetables Nutrition 0.000 abstract description 18
- 235000013399 edible fruits Nutrition 0.000 abstract description 10
- 230000009545 invasion Effects 0.000 abstract description 5
- 239000003242 anti bacterial agent Substances 0.000 abstract description 3
- 235000013311 vegetables Nutrition 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 244000052616 bacterial pathogen Species 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 9
- 201000010099 disease Diseases 0.000 description 6
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 6
- 244000241872 Lycium chinense Species 0.000 description 5
- 235000015468 Lycium chinense Nutrition 0.000 description 5
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 4
- 241000218691 Cupressaceae Species 0.000 description 4
- 235000015459 Lycium barbarum Nutrition 0.000 description 4
- 229940055577 oleyl alcohol Drugs 0.000 description 4
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 description 4
- 235000017784 Mespilus germanica Nutrition 0.000 description 3
- 244000182216 Mimusops elengi Species 0.000 description 3
- 235000000560 Mimusops elengi Nutrition 0.000 description 3
- 235000007837 Vangueria infausta Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- TWFZGCMQGLPBSX-UHFFFAOYSA-N Carbendazim Natural products C1=CC=C2NC(NC(=O)OC)=NC2=C1 TWFZGCMQGLPBSX-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 235000021028 berry Nutrition 0.000 description 2
- FUWUEFKEXZQKKA-UHFFFAOYSA-N beta-thujaplicin Chemical compound CC(C)C=1C=CC=C(O)C(=O)C=1 FUWUEFKEXZQKKA-UHFFFAOYSA-N 0.000 description 2
- 239000006013 carbendazim Substances 0.000 description 2
- JNPZQRQPIHJYNM-UHFFFAOYSA-N carbendazim Chemical compound C1=C[CH]C2=NC(NC(=O)OC)=NC2=C1 JNPZQRQPIHJYNM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 231100000086 high toxicity Toxicity 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 230000001766 physiological effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229930003268 Vitamin C Natural products 0.000 description 1
- TUFYVOCKVJOUIR-UHFFFAOYSA-N alpha-Thujaplicin Natural products CC(C)C=1C=CC=CC(=O)C=1O TUFYVOCKVJOUIR-UHFFFAOYSA-N 0.000 description 1
- 239000000022 bacteriostatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 229930007845 β-thujaplicin Natural products 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/16—Coating with a protective layer; Compositions or apparatus therefor
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a preservative based on cypress oil alcohol and a preparation method thereof, which is characterized in that cypress oil alcohol and magnolia bark polyphenol are dissolved in ethanol at the temperature of 50-70 ℃ under rapid stirring, and the mixture is stirred until the cypress oil alcohol and the magnolia bark polyphenol are completely dissolved, so as to prepare an alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol; adding the thickening agent and the film forming agent into deionized water, heating to 70-90 ℃, and rapidly stirring until the thickening agent and the film forming agent are completely dissolved; adding the alcoholic solution of cypress oil alcohol and magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, and quickly stirring until the alcoholic solution of cypress oil alcohol and magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent to prepare the preservative based on cypress oil alcohol. According to the invention, the broad-spectrum antibacterial agent cypress oil alcohol and the mangnolia officinalis polyphenol are compounded, so that the prepared preservative can inhibit the invasion of most exogenous pathogenic bacteria, and the commercialization period of fruits and vegetables is prolonged; meanwhile, the water loss of the fruits and the vegetables and the abrasion caused by collision in the transportation process are effectively reduced.
Description
Technical Field
The invention relates to the technical field of fruit and vegetable preservation, and particularly relates to a preservative based on cypress oil alcohol and magnolia polyphenol and a preparation method thereof.
Background
The fruit and vegetable products have higher nutritional value, and along with the continuous improvement of living standard, the demand and quality of the fruit and vegetable products in the life of people are increased year by year. The fruit and vegetable products are fundamentally different from agricultural products such as grains, and the requirements of the fruit and vegetable products on freshness are higher. The fruit and vegetable products have higher requirements on the preservation technology due to high water content and vigorous respiration and transpiration. The main causes of the deterioration and the decay of the fruit and vegetable products comprise the invasion of external diseases and the physiological activities of the fruit and vegetable products. In order to inhibit the deterioration and the decay of fruit and vegetable products and prolong the commodity thereof, the method must start from two aspects of inhibiting the invasion of exogenous diseases and the physiological activities of the fruits and the vegetables. At present, great progress is made in the aspects of physical preservation technologies such as refrigeration preservation, modified atmosphere preservation, radiation preservation and the like in China, however, chemical preservation is slowly developed as an important component of the whole preservation system, and at present, most of preservatives also depend on high-toxicity pesticides such as sulphur products, carbendazim and the like. In view of the above, the patent discloses a novel fruit and vegetable fresh-keeping agent based on low-toxicity medicines such as mangnolia officinalis polyphenol and cypress oleyl alcohol.
In the prior art, for example, the invention patent with the application number of 201610670381.3 discloses an instant vegetable and fruit fresh-keeping bacteriostatic agent, which comprises the following components: 1-3% of chitosan, 0.02-0.1% of hinokitiol, 1-3% of ethanol, 0.1-0.5% of vitamin C and the balance of water, but the preservative effect of berries with high sugar content is poor.
Disclosure of Invention
In order to change the current situation that the existing preservative depends on high-toxicity pesticides such as sulfur products, carbendazim and the like and improve the preservation effect, the invention provides the preservative based on cypress oil alcohol and magnolia polyphenol and the preparation method thereof, and the preservative is realized by the following technical scheme:
a preservative based on cypress oil alcohol and magnolia officinalis comprises 0-7% by weight of cypress oil alcohol and 0-7% by weight of magnolia officinalis polyphenol in the preservative.
Further, the preservative also comprises 0-15% of ethanol, 0-1% of thickening agent, 0-1% of film forming agent and the balance of water by weight percentage.
Further, the thickener is at least one of sodium carboxymethylcellulose, sodium diatomate, gelatin, agar, sodium polyacrylate and diatomite.
Further, the film forming agent is at least one of polyvinyl alcohol, polyethylene glycol, chitosan, polylactic acid, polyglycolic acid and polyvinylpyrrolidone.
A preparation method of a preservative based on cypress oil alcohol and magnolia polyphenol comprises the following steps:
s1, dissolving cypress oil alcohol and magnolia officinalis polyphenol in ethanol at 50-70 ℃, and stirring until the cypress oil alcohol and the magnolia officinalis polyphenol are completely dissolved to obtain an alcohol solution of the cypress oil alcohol and the magnolia officinalis polyphenol;
s2, adding the thickening agent and the film forming agent into deionized water, heating to 70-90 ℃, and stirring until the thickening agent and the film forming agent are completely dissolved to obtain an aqueous solution of the thickening agent and the film forming agent;
s3, adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, and stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent to obtain the preservative based on the cypress oil alcohol and the magnolia bark polyphenol.
Further, the stirring speed in the above-mentioned S1-S3 was at 300-1200 rpm.
Further, the preservative based on the cypress oil alcohol and the magnolia polyphenol in the S3 contains 0-7% of cypress oil alcohol, 0-7% of magnolia polyphenol, 0-15% of ethanol, 0-1% of a thickening agent, 0-1% of a film forming agent and the balance of water.
Further, the thickener used in S2 is at least one of sodium carboxymethylcellulose, sodium diatomaceous earth, gelatin, agar, sodium polyacrylate, and diatomaceous earth.
Further, the film forming agent used in S2 is at least one of polyvinyl alcohol, polyethylene glycol, chitosan, polylactic acid, polyglycolic acid, and polyvinylpyrrolidone.
The invention has the beneficial effects that the preservative and the preparation method thereof relate to cypress oil alcohol and magnolia polyphenol, and have the effects of obviously reducing the indexes of fruit and vegetable diseases, delaying the reduction of the content of soluble solids in fruits and vegetables, and inhibiting the increase of the content of fatty acid and color change, thereby improving the quality of the fruits and vegetables. The cypress oleyl alcohol and the mangnolia officinalis polyphenol belong to plant-derived broad-spectrum efficient antibacterial agents, and are non-toxic and safe, and the broad-spectrum antibacterial agents are compounded of the cypress oleyl alcohol and the mangnolia officinalis polyphenol, so that the prepared preservative can inhibit the invasion of most exogenous pathogenic bacteria, the capability of fruits and vegetables in inhibiting exogenous diseases is effectively improved, the commercialization period of the fruits and vegetables is prolonged, the food safety risk caused by the use of other chemical preservative residues can be greatly reduced, and the great social benefit is achieved. Through compounding of the cypress oleyl alcohol, the mangnolia officinalis polyphenol, the thickening agent and the film forming agent, the prepared fresh-keeping emulsion can quickly form a layer of compact, firmly-adhered, continuous and uniform film on the surfaces of fruits and vegetables, so that the external pathogen invasion is inhibited, and the water loss of the fruits and vegetables and the abrasion caused by collision in the transportation process can be effectively reduced; in addition, the fruit fresh-keeping agent can keep fresh of berry fruits with high sugar content, such as medlar and the like, of which the conventional fresh-keeping agent effect is not obvious.
Detailed Description
The technical solution of the present invention is further described below with reference to specific embodiments:
example 1
Dissolving 0.2 part of cypress oil alcohol and 0.5 part of magnolia polyphenol in 5 parts of ethanol at 50 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.3 part of sodium diatomate and 0.3 part of chitosan in 90 parts of deionized water at 75 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 2
Dissolving 0.2 part of cypress oil alcohol and 0.5 part of magnolia polyphenol in 5 parts of ethanol at 50 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.2 part of sodium carboxymethylcellulose, 0.1 part of gelatin, 0.1 part of polyvinyl alcohol and 0.1 part of polylactic acid in 90 parts of deionized water at 75 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 3
Dissolving 0.5 part of cypress oil alcohol and 0.1 part of magnolia polyphenol in 10 parts of ethanol at 60 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.1 part of sodium polyacrylate, 0.1 part of gelatin, 0.2 part of chitosan and 0.1 part of polyvinylpyrrolidone in 90 parts of deionized water at 85 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 4
Dissolving 0.8 part of cypress oil alcohol and 0.1 part of magnolia polyphenol in 8 parts of ethanol at 70 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.3 part of sodium diatomate, 0.1 part of agar and 0.2 part of polyethylene glycol in 90 parts of deionized water at 90 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 5
Dissolving 0.5 part of cypress oil alcohol and 0.5 part of magnolia polyphenol in 7 parts of ethanol at 65 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.1 part of sodium diatomate, 0.2 part of gelatin, 0.2 part of chitosan and 0.2 part of polyglycolic acid in 90 parts of deionized water at 85 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 6
Dissolving 0.5 part of cypress oil alcohol and 0.1 part of magnolia polyphenol in 10 parts of ethanol at 60 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.1 part of sodium diatomate and 0.6 part of chitosan in 90 parts of deionized water at 85 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 7
Dissolving 0.8 part of cypress oil alcohol and 0.1 part of magnolia polyphenol in 8 parts of ethanol at 70 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.5 part of sodium diatomate and 0.1 part of chitosan in 90 parts of deionized water at 90 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 8
Dissolving 0.5 part of cypress oil alcohol and 0.5 part of magnolia polyphenol in 7 parts of ethanol at 65 ℃ under rapid stirring, and stirring until the cypress oil alcohol and the magnolia polyphenol are completely dissolved to prepare an alcohol solution of the cypress oil alcohol and the magnolia polyphenol; dissolving 0.4 part of sodium diatomate and 0.4 part of chitosan in 90 parts of deionized water at 85 ℃ to obtain an aqueous solution of a thickening agent and a film-forming agent; adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, quickly stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent, continuously stirring and adding water until the total amount reaches 100 parts.
Example 9
Medlar fresh-keeping method
The fresh keeping agent prepared in the embodiment 1 is selected to spray the fresh wolfberry fruits, so that the fresh keeping agent prepared in the embodiment 1 is uniformly distributed on the surfaces of the wolfberries, particularly the mechanical damage parts need to be sprayed, and the moisture in the fresh keeping agent is dried at room temperature.
By spraying the preservative, fresh Chinese wolfberry fruits are stored for 48 hours at room temperature, and the incidence of disease is lower than 20%; under the same conditions, the morbidity of the fresh wolfberry fruits without the preservative is up to 70 percent.
The disease rate of the fresh medlar fruits sprayed with the preservative is lower than 15 percent under the refrigeration condition of 0 ℃; under the same conditions, the morbidity of the fresh wolfberry fruits which are not sprayed with the preservative is up to 70 percent.
The present invention is further explained and not limited by the embodiments, and those skilled in the art can make various modifications as necessary after reading the present specification, but all the embodiments are protected by the patent law within the scope of the claims.
Claims (9)
1. The preservative based on the cypress oil alcohol and the magnolia officinalis in multiple parts is characterized by comprising 0-7 wt% of cypress oil alcohol and 0-7 wt% of magnolia officinalis polyphenol in the preservative.
2. The preservative based on cypress oil alcohol and magnolia polyphenol as claimed in claim 1, further comprising 0-15% by weight of ethanol, 0-1% by weight of a thickener, 0-1% by weight of a film forming agent, and the balance of water.
3. The cypress oil alcohol and magnolia polyphenol based preservative according to claim 2, wherein the thickener is at least one of sodium carboxymethylcellulose, sodium diatomate, gelatin, agar, sodium polyacrylate, and diatomaceous earth.
4. The cypress oil alcohol and magnolia polyphenol based preservative according to claim 2, wherein the film forming agent is at least one of polyvinyl alcohol, polyethylene glycol, chitosan, polylactic acid, polyglycolic acid, and polyvinylpyrrolidone.
5. A preparation method of a preservative based on cypress oil alcohol and magnolia polyphenol is characterized by comprising the following steps:
s1, dissolving cypress oil alcohol and magnolia officinalis polyphenol in ethanol at 50-70 ℃, and stirring until the cypress oil alcohol and the magnolia officinalis polyphenol are completely dissolved to obtain an alcohol solution of the cypress oil alcohol and the magnolia officinalis polyphenol;
s2, adding the thickening agent and the film forming agent into deionized water, heating to 70-90 ℃, and stirring until the thickening agent and the film forming agent are completely dissolved to obtain an aqueous solution of the thickening agent and the film forming agent;
s3, adding the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol into the aqueous solution of the thickening agent and the film forming agent, and stirring until the alcoholic solution of the cypress oil alcohol and the magnolia bark polyphenol is uniformly dispersed in the aqueous solution of the thickening agent and the film forming agent to obtain the preservative based on the cypress oil alcohol and the magnolia bark polyphenol.
6. The preparation method of the cypress oil alcohol and magnolia polyphenol based preservative as claimed in claim 5, wherein the stirring speed in S1-S3 is 300-1200 rpm.
7. The method for preparing an antistaling agent based on cypress oil alcohol and magnolia bark polyphenol as claimed in claim 5, wherein the antistaling agent based on cypress oil alcohol and magnolia bark polyphenol in S3 comprises 0-7% by weight of cypress oil alcohol, 0-7% by weight of magnolia bark polyphenol, 0-15% by weight of ethanol, 0-1% by weight of thickening agent, 0-1% by weight of film forming agent, and the balance of water.
8. The method for preparing cypress oil alcohol and magnolia polyphenol based preservative according to claim 5, wherein the thickener used in S2 is at least one of sodium carboxymethyl cellulose, sodium diatomate, gelatin, agar, sodium polyacrylate, and diatomite.
9. The preparation method of the cypress oil alcohol and magnolia polyphenol based preservative as claimed in claim 5, wherein the film forming agent used in S2 is at least one of polyvinyl alcohol, polyethylene glycol, chitosan, polylactic acid, polyglycolic acid, and polyvinylpyrrolidone.
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CN106889171A (en) * | 2017-01-05 | 2017-06-27 | 四川膳缘食品有限公司 | A kind of food preservative and its fresh-keeping foodstuff |
CN108003440A (en) * | 2017-12-29 | 2018-05-08 | 成都新柯力化工科技有限公司 | A kind of fruit-vegetable plastic wrap and preparation method with antibacterial functions |
CN109134229A (en) * | 2017-12-04 | 2019-01-04 | 中国农业科学院农业环境与可持续发展研究所 | A method of preparing cypress oleyl alcohol |
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JPH06113735A (en) * | 1992-10-06 | 1994-04-26 | Sumitomo Seika Chem Co Ltd | Freshness retaining agent and method for retaining freshness |
CN106259872A (en) * | 2016-08-15 | 2017-01-04 | 上海市农业科学院 | A kind of instant vegetables and fruits fresh-keeping bacteriostatic agent |
CN106889171A (en) * | 2017-01-05 | 2017-06-27 | 四川膳缘食品有限公司 | A kind of food preservative and its fresh-keeping foodstuff |
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