CN108208153A - A kind of alkalescent fruit cleaning and fresh-keeping waxing agent and preparation method thereof - Google Patents
A kind of alkalescent fruit cleaning and fresh-keeping waxing agent and preparation method thereof Download PDFInfo
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- CN108208153A CN108208153A CN201711389141.7A CN201711389141A CN108208153A CN 108208153 A CN108208153 A CN 108208153A CN 201711389141 A CN201711389141 A CN 201711389141A CN 108208153 A CN108208153 A CN 108208153A
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- 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
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Abstract
The invention discloses a kind of waxing agent of alkalescent fruit cleaning and fresh-keeping, when total weight is 100 parts, include following components according to parts by weight：Natural or modified 5 20 parts of film forming agent of waxing, 0.1 10 parts of ripener, 0.1 10 parts of emulsifier, 0.1 10 parts of organic base, 0.1 5 parts of antifoaming agent, 0.1 5 parts of antifreezing agent, 0.1 5 parts of essence, 0.1 10 parts of processing aid, surplus is water.The present invention can not only effectively remove the pesticide residue of fruit surface, accelerate the ripening to fruit, moreover it is possible to form brightly painted wax layer, while the moisture of the holding fruit of long period does not scatter and disappear in fruit surface, make fruit take a fancy to frost it is bright-coloured tempting.The present invention can remove, therefore non-hazardous to human body in the wax layer that fruit surface is formed through washing, healthy and safe.
Description
Technical field
The present invention relates to field of food preservation, and in particular to a kind of alkalescent fruit cleaning and fresh-keeping waxing agent.
Background technology
With the continuous expansion of scale of agricultural production, fruit is produced in situ in, and feeding sale on the spot becomes more and more unrealistic,
Fruit export trade gradually becomes mainstream, this just to fruit it is fresh-keeping guarantee the quality, anti-corrosive antibacterial proposes higher requirement.In the length of fruit
It will appear a series of problems, such as the lost of moisture, color and luster are dimmed, bacterium invades, fruit is corrupt in transportational process, it is therefore, right
The fruit surface picked, which carries out waxing processing, becomes particularly important, is the important way for improving fruit value.
Fruit wax is primarily to fresh-keeping.Wax forms layer protecting film in fruit surface, can not only protect outside fruit
Skin improves glossiness, is also prevented from moisture evaporation, retains the fresh perfume (or spice) of fruit.In addition, germ is also not easy to invade after waxing, it can
It is the preservation method allowed in the world to fruit wax with antiseptic insect-repelling.In recent ten years, China is weighed in fruit wax
Depending on but development degree is relatively low, and product Chinese pennisetum green bristlegrass in the market is uneven, the good and bad jumbled together so that popular feeling fear when consumer buys fruit
Fear has a lingering fear to waxing fruit, therefore is badly in need of safe and healthy pollution-free and harm product in the market to preserve water for a long time
Fruit allows consumer to feel at ease to trust.
Invention content
For solution more than technical problem, the present invention provides a kind of safety non-pollution, non-hazardous alkalescent fruit wax
Agent can prevent the evaporation of moisture in fruit, the intrusion inhibited bacteria, antiseptic insect-repelling, and washing can be gone with the long period, health peace
Entirely.
In order to achieve the above objectives, the technical solution adopted by the present invention is a kind of alkalescent fruit cleaning and fresh-keeping waxing agent,
When total weight is 100 parts, include following components according to parts by weight：Natural or modified 5-20 parts of film forming agent of waxing, ripener
0.1-10 parts, 0.1-10 parts of emulsifier, 0.1-10 parts of organic base, 0.1-5 parts of antifoaming agent, 0.1-5 parts of antifreezing agent, essence 0.1-5
Part, 0.1-10 parts of processing aid, surplus is water.
Wherein, the natural or modified waxing film forming agent includes but are not limited to one or more in following reagent：
Rosin, maleic rosin, shellac, lac, pectin.
Wherein, the ripener includes but are not limited to one or more of following reagent：Ammonium hydroxide, ethylene, ethylene
Profit, ethyl alcohol, acetaldehyde.
Wherein, the emulsifier includes but are not limited to one or more of following reagent：Fatty acid mono glycidol,
Sorbose alcohol ester, soybean lecithin, lauric monoglyceride, methyl glycol fatty acid ester, rosin triethanolamine ester, octadecanoid acid.
Wherein, the organic base includes but not limited to one or more of following reagent：Tetramethylammonium hydroxide, three
Ethamine, diethylamine, ethylenediamine, triethylene diamine, N-methylmorpholine, tetramethylethylenediamine.
Wherein, the antifoaming agent includes but not limited to one or more of following reagent：Dimethyl silicone polymer, ten
Eight alkanoic acids, oleic acid, linoleic acid, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, gather palmitic acid
Oxypropylene glycerin ether, polyoxyethylene polyoxypropylene glycerin ether, silicone emulsion.
Wherein, the antifreezing agent includes but not limited to one or more of following reagent：Calcium chloride, sodium chloride, carbon
Sour potassium, methanol, ethyl alcohol, ethylene glycol.
Wherein, the processing aid includes but not limited to one or more of following reagent：Ethanol amine, diethanol
Amine, triethanolamine, morpholine.
Wherein, the essence includes but not limited to one or more of following reagent：Lemon extract, flavoring apple essence,
Cream jasmin france, mango essence, flavoring banana essence.
Preferably, the alkalescent fruit cleaning and fresh-keeping waxing agent, when total weight is 100 parts, according to parts by weight packet
Include following components：Natural or modified 14 parts of film forming agent of waxing, 2.5 parts of ripener, 2 parts of emulsifier, 3.5 parts of organic base, antifoaming agent 1
Part, 0.5 part of antifreezing agent, 0.3 part of essence, 4 parts of processing aid, 72.2 parts of water.
Preferably, the alkalescent fruit cleaning and fresh-keeping waxing agent, when total weight is 100 parts, according to parts by weight packet
Include following components：Natural or modified 15 parts of film forming agent of waxing, 3.0 parts of ripener, 2.2 parts of emulsifier, 3.7 parts of organic base, defoaming
1 part of agent, 0.5 part of antifreezing agent, 0.2 part of essence, 4.4 parts of processing aid, 70 parts of water.
Preferably, the alkalescent fruit cleaning and fresh-keeping waxing agent, when total weight is 100 parts, according to parts by weight packet
Include following components：Natural or modified 13 parts of film forming agent of waxing, 2 parts of ripener, 2 parts of emulsifier, 3 parts of organic base, antifoaming agent 0.8
Part, 0.5 part of antifreezing agent, 0.2 part of essence, 4.1 parts of processing aid, 74.4 parts of water.
Preferably, the alkalescent fruit cleaning and fresh-keeping waxing agent, when total weight is 100 parts, according to parts by weight packet
Include following components：14 parts of maleic rosin, 2.5 parts of ammonium hydroxide, 1.5 parts of triethanolamine, 1.5 parts of oleic acid, 2 parts of rosin triethanolamine ester,
0.1 part of dimethyl silicone polymer, 0.1 part of calcium chloride, 4.5 parts of tetramethylammonium hydroxide, 0.1 part of essence, 73.7 parts of water.
The present invention also provides a kind of preparation methods of alkalescent fruit cleaning and fresh-keeping waxing agent, include the following steps：
Step 1：Various raw materials are got ready according to following components ratio, for use；When total weight is 100 parts, according to weight
Number, natural or modified 5-20 parts of film forming agent of waxing, 0.1-10 parts of ripener, 0.1-10 parts of emulsifier, 0.1-10 parts of organic base,
0.1-5 parts of antifoaming agent, 0.1-5 parts of antifreezing agent, 0.1-5 parts of essence, 0.1-10 parts of processing aid, surplus is water；
Step 2：Natural or modified waxing film forming agent, ripener, emulsifier, antifoaming agent, processing aid are emulsified,
Emulsification times are 10-50min, and emulsifying temperature is 113 ± 5 DEG C；
Step 3：Stir speed (S.S.) is 700-1100r/min；Cooling, remaining group is added when temperature drops to 60 ± 2 DEG C
Point, stirring 5-10min is disperseed again；
Step 4：Then 30 ± 2 DEG C of taking-ups are cooled to, use is high-pressure homogeneous, and average pressure is 50 ± 10Mpa, carries out equal
Matter.
The product of the present invention for brown color water solubility transparency liquid, can not only effectively remove fruit surface pesticide residue,
It accelerates the ripening to fruit, moreover it is possible to brightly painted wax layer is formed in fruit surface, the long period keeps the moisture of fruit not scatter and disappear,
Make fruit take a fancy to frost it is bright-coloured tempting.Meanwhile the wax layer of fruit surface is water-soluble, fruit is cleaned before eating and can be removed
Fall wax layer, harm will not be generated to the health of human body, it is healthy and safe.
The fresh-keeping waxing reagent of fruit cleaning of this patent is that a kind of fruit nontoxic, that harm will not be generated to health is beaten
Wax reagent can prevent the evaporation of moisture in fruit, the fresh perfume for retaining fruit, the intrusion inhibited bacteria, anti-corrosion from preventing with the long period
Worm, and the cured layer washing that the present invention is formed can be gone, it is healthy and safe.
Specific embodiment
With reference to specific embodiment, the present invention is further explained.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after present disclosure has been read, those skilled in the art can
To be made various changes or modifications to the present invention, such equivalent forms equally fall within limited range of the present invention.
A kind of alkalescent fruit cleaning and fresh-keeping waxing agent, when total weight is 100 parts, includes according to parts by weight with the following group
Point：Natural or modified 5-20 parts of film forming agent of waxing, 0.1-10 parts of ripener, 0.1-10 parts of emulsifier, 0.1-10 parts of organic base disappear
0.1-5 parts of infusion, 0.1-5 parts of antifreezing agent, 0.1-5 parts of essence, 0.1-10 parts of processing aid, surplus is water.
Wherein, the natural or modified waxing film forming agent includes but are not limited to one or more in following reagent：
Rosin, maleic rosin, shellac, lac, pectin.
Wherein, the ripener includes but are not limited to one or more of following reagent：Ammonium hydroxide, ethylene, ethylene
Profit, ethyl alcohol, acetaldehyde.
Wherein, the emulsifier includes but are not limited to one or more of following reagent：Fatty acid mono glycidol,
Sorbose alcohol ester, soybean lecithin, lauric monoglyceride, methyl glycol fatty acid ester, rosin triethanolamine ester, octadecanoid acid.
Wherein, the organic base includes but not limited to one or more of following reagent：Tetramethylammonium hydroxide, three
Ethamine, diethylamine, ethylenediamine, triethylene diamine, N-methylmorpholine, tetramethylethylenediamine.
Wherein, the antifoaming agent includes but not limited to one or more of following reagent：Dimethyl silicone polymer, ten
Eight alkanoic acids, oleic acid, linoleic acid, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, gather palmitic acid
Oxypropylene glycerin ether, polyoxyethylene polyoxypropylene glycerin ether, silicone emulsion.
Wherein, the antifreezing agent includes but not limited to one or more of following reagent：Calcium chloride, sodium chloride, carbon
Sour potassium, methanol, ethyl alcohol, ethylene glycol.
Wherein, the processing aid includes but not limited to one or more of following reagent：Ethanol amine, diethanol
Amine, triethanolamine, morpholine.
Wherein, the essence includes but not limited to one or more of following reagent：Lemon extract, flavoring apple essence,
Cream jasmin france, mango essence, flavoring banana essence.
The present invention also provides a kind of preparation methods of alkalescent fruit cleaning and fresh-keeping waxing agent, include the following steps：
Step 1：Various raw materials are got ready according to following components ratio, for use；When total weight is 100 parts, according to weight
Number, natural or modified 5-20 parts of film forming agent of waxing, 0.1-10 parts of ripener, 0.1-10 parts of emulsifier, 0.1-10 parts of organic base,
0.1-5 parts of antifoaming agent, 0.1-5 parts of antifreezing agent, 0.1-5 parts of essence, 0.1-10 parts of processing aid, surplus is water；
Step 2：Natural or modified waxing film forming agent, ripener, emulsifier, antifoaming agent, processing aid are emulsified,
Emulsification times are 10-50min, and emulsifying temperature is 113 ± 5 DEG C；
Step 3：Stir speed (S.S.) is 700-1100r/min, and remaining component is added when temperature drops to 60 ± 2 DEG C, is stirred
5-10min is mixed again to be disperseed；
Step 4：Then 30 ± 2 DEG C of taking-ups are cooled to, use is high-pressure homogeneous, and average pressure is 50 ± 10Mpa, carries out equal
Matter.
Embodiment 1
By 14 parts of maleic rosin, 2.5 parts of ammonium hydroxide, 1.5 parts of triethanolamine, 1.5 parts of oleic acid, 2 parts of rosin triethanolamine ester gathers
0.1 part of dimethyl siloxane, 73.7 parts of water are emulsified, emulsification times 40min, and emulsifying temperature is 115 DEG C, and stir speed (S.S.) is
Then 1000r/min is cooled down, 0.1 part of calcium chloride, 4.5 parts of tetramethylammonium hydroxide, essence are added in when temperature drops to 60 DEG C
0.1 part, continue stirring 10min and disperseed again, temperature is down to 30 DEG C of taking-ups, and use is high-pressure homogeneous, pressure 50Mpa,
Matter 3 times obtains the waxing agent of alkalescent fruit cleaning and fresh-keeping.
Embodiment 2
By 13 parts of lac, 2 parts of ammonium hydroxide, 1 part of morpholine, 1 part of ricinoleic acid, 1.5 parts of rosin triethanolamine ester, poly dimethyl silicon
0.1 part of oxygen alkane, 77.2 parts of water are emulsified, emulsification times 20min, and emulsifying temperature is 113 DEG C, stir speed (S.S.) 800r/
Min, adds in 0.1 part of calcium chloride when temperature drops to 60 DEG C, 4 parts of triethanolamine, 0.1 part of essence, continue to stir 5min again into
Row dispersion, temperature are down to 30 DEG C of taking-ups, and use is high-pressure homogeneous, pressure 40Mpa, homogeneous 2 times.
Embodiment 3
By 15 parts of pectin, 3 parts of ethyl alcohol, 2 parts of triethylamine, 2 parts of linoleic acid, 3 parts of lauric monoglyceride, polyoxyethylene polyoxy
0.1 part of propylene pentaerythrite ether, 69.7 parts of water are emulsified, emulsification times 60min, and emulsifying temperature is 117 DEG C, stir speed (S.S.)
For 1100r/min, 0.1 part of calcium chloride, 5 parts of diethanol amine are added in when temperature drops to 60 DEG C, 0.1 part of essence continues to stir
10min is disperseed again, and temperature is down to 30 DEG C of taking-ups, and use is high-pressure homogeneous, pressure 60Mpa, homogeneous 4 times.
Embodiment 4
By 14 parts of shellac, 2.5 parts of ammonium hydroxide, 1.5 parts of diethanol amine, 1.5 parts of ricinoleic acid, 2 parts of sorbose alcohol ester, polyoxy third
0.1 part of alkene glycerin ether, 73.7 parts of water are emulsified, emulsification times 50min, and emulsifying temperature is 116 DEG C, and stir speed (S.S.) is
950r/min, 0.1 part of calcium chloride, 4.5 parts of triethylene diamine are added in when temperature drops to 60 DEG C, and 0.1 part of essence continues to stir
10min is disperseed again, and temperature is down to 30 DEG C of taking-ups, and use is high-pressure homogeneous, pressure 50Mpa, homogeneous 2 times.
The present invention can not only effectively remove the pesticide residue of fruit surface, accelerate the ripening to fruit, moreover it is possible in fruit surface
Form brightly painted wax layer, the long period keeps the moisture of fruit not scatter and disappear, make fruit take a fancy to frost it is bright-coloured tempting.Together
When, the present invention is water-soluble in the wax layer that fruit surface is formed, and fruit cleans before eating can remove wax layer, will not be to people
The health of body generates harm, healthy and safe.
It is above the description to the embodiment of the present invention, by the foregoing description of the disclosed embodiments, makes this field special
Industry technical staff can realize or use the present invention.A variety of modifications of these embodiments carry out those skilled in the art
It says and will be apparent, the general principles defined herein can be in the situation for not departing from the spirit or scope of the present invention
Under, it realizes in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, but to accord with
Close the most wide range consistent with the principles and novel features disclosed herein.
Claims (10)
- The agent 1. a kind of alkalescent fruit cleaning and fresh-keeping is waxed, which is characterized in that when total weight is 100 parts, according to parts by weight Including following components：Natural or modified 5-20 parts of film forming agent of waxing, 0.1-10 parts of ripener, 0.1-10 parts of emulsifier, organic base 0.1-10 parts, 0.1-5 parts of antifoaming agent, 0.1-5 parts of antifreezing agent, 0.1-5 parts of essence, 0.1-10 parts of processing aid, surplus is water.
- The agent 2. alkalescent fruit cleaning and fresh-keeping according to claim 1 is waxed, which is characterized in that described is natural or modified Waxing film forming agent includes but are not limited to one or more in following reagent：Rosin, maleic rosin, shellac, lac, pectin.
- The agent 3. alkalescent fruit cleaning and fresh-keeping according to claim 1 is waxed, which is characterized in that the ripener includes But it is not limited only to one or more of following reagent：Ammonium hydroxide, ethylene, ethephon (CEPHA),2-(chloroethyl) phosphonic acid, ethyl alcohol, acetaldehyde.
- The agent 4. alkalescent fruit cleaning and fresh-keeping according to claim 1 is waxed, which is characterized in that the emulsifier includes But it is not limited only to one or more of following reagent：Fatty acid mono glycidol, sorbose alcohol ester, soybean lecithin, lauric acid list Glyceride, methyl glycol fatty acid ester, rosin triethanolamine ester, octadecanoid acid.
- The agent 5. alkalescent fruit cleaning and fresh-keeping according to claim 4 is waxed, which is characterized in that the organic base includes But it is not limited to one or more of following reagent：Tetramethylammonium hydroxide, triethylamine, diethylamine, ethylenediamine, triethylene two Amine, N-methylmorpholine, tetramethylethylenediamine.
- The agent 6. alkalescent fruit cleaning and fresh-keeping according to claim 1 is waxed, which is characterized in that the antifoaming agent includes But it is not limited to one or more of following reagent：Dimethyl silicone polymer, palmitic acid, oleic acid, linoleic acid, gathers octadecanoid acid Ethylene oxide polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether, polyoxyethylene polyoxypropylene Glycerin ether, silicone emulsion.
- The agent 7. alkalescent fruit cleaning and fresh-keeping according to claim 1 is waxed, which is characterized in that the antifreezing agent includes But it is not limited to one or more of following reagent：Calcium chloride, sodium chloride, potassium carbonate, methanol, ethyl alcohol, ethylene glycol.
- The agent 8. alkalescent fruit cleaning and fresh-keeping according to claim 1 is waxed, which is characterized in that the processing aid packet It includes but is not limited to one or more of following reagent：Ethanol amine, diethanol amine, triethanolamine, morpholine.
- The agent 9. alkalescent fruit cleaning and fresh-keeping according to claim 1 is waxed, which is characterized in that the essence include but It is not limited to one or more of following reagent：Lemon extract, flavoring apple essence, cream jasmin france, mango essence, flavoring banana essence.
- 10. a kind of preparation method of alkalescent fruit cleaning and fresh-keeping waxing agent, which is characterized in that the preparation method includes following Step；Step 1：Various raw materials are got ready according to following components ratio, for use；When total weight is 100 parts, according to parts by weight Number, natural or modified 5-20 parts of film forming agent of waxing, 0.1-10 parts of ripener, 0.1-10 parts of emulsifier, 0.1-10 parts of organic base disappear 0.1-5 parts of infusion, 0.1-5 parts of antifreezing agent, 0.1-5 parts of essence, 0.1-10 parts of processing aid, surplus is water；Step 2：Natural or modified waxing film forming agent, ripener, emulsifier, antifoaming agent, processing aid are emulsified, emulsified Time is 10-50min, and emulsifying temperature is 113 ± 5 DEG C；Step 3：Stir speed (S.S.) is 700-1100r/min, and remaining component is added when temperature drops to 60 ± 2 DEG C, stirs 5- 10min is disperseed again；Step 4：Then 30 ± 2 DEG C of taking-ups are cooled to, use is high-pressure homogeneous, and average pressure is 50 ± 10Mpa, carries out homogeneous and is It can.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711389141.7A CN108208153A (en) | 2017-12-20 | 2017-12-20 | A kind of alkalescent fruit cleaning and fresh-keeping waxing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711389141.7A CN108208153A (en) | 2017-12-20 | 2017-12-20 | A kind of alkalescent fruit cleaning and fresh-keeping waxing agent and preparation method thereof |
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| CN108208153A true CN108208153A (en) | 2018-06-29 |
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| CN201711389141.7A Pending CN108208153A (en) | 2017-12-20 | 2017-12-20 | A kind of alkalescent fruit cleaning and fresh-keeping waxing agent and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020226495A1 (en) * | 2019-05-06 | 2020-11-12 | Liquidseal Holding B.V. | Edible coating composition for coating fresh harvest products |
| KR102239611B1 (en) * | 2020-11-09 | 2021-04-13 | 장동길 | Protecting agent of tangerine |
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| CN1435092A (en) * | 2002-02-01 | 2003-08-13 | 珠海真绿色技术有限公司 | Fruit and vegetable preserving antistaling agent composition |
| ES2183674B1 (en) * | 2000-02-10 | 2004-01-16 | Cerexagri Iberica S A | AN EMULSION OF ESTER GLICERIDO DE COLOFONIA AND A SYNTHETIC OR NATURAL WAX, PROCEDURE FOR ITS PREPARATION AND APPLICATIONS. |
| CN104705392A (en) * | 2015-04-08 | 2015-06-17 | 华中农业大学 | Preservative fruit wax containing bleached lac as well as preparation method and application thereof |
| CN107027879A (en) * | 2016-12-18 | 2017-08-11 | 钦州阜康农副食品有限公司 | A kind of fruit freshness preserving fruit wax and preparation method thereof |
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2017
- 2017-12-20 CN CN201711389141.7A patent/CN108208153A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2183674B1 (en) * | 2000-02-10 | 2004-01-16 | Cerexagri Iberica S A | AN EMULSION OF ESTER GLICERIDO DE COLOFONIA AND A SYNTHETIC OR NATURAL WAX, PROCEDURE FOR ITS PREPARATION AND APPLICATIONS. |
| CN1435092A (en) * | 2002-02-01 | 2003-08-13 | 珠海真绿色技术有限公司 | Fruit and vegetable preserving antistaling agent composition |
| CN104705392A (en) * | 2015-04-08 | 2015-06-17 | 华中农业大学 | Preservative fruit wax containing bleached lac as well as preparation method and application thereof |
| CN107027879A (en) * | 2016-12-18 | 2017-08-11 | 钦州阜康农副食品有限公司 | A kind of fruit freshness preserving fruit wax and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020226495A1 (en) * | 2019-05-06 | 2020-11-12 | Liquidseal Holding B.V. | Edible coating composition for coating fresh harvest products |
| KR102239611B1 (en) * | 2020-11-09 | 2021-04-13 | 장동길 | Protecting agent of tangerine |
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