CN1270614C - Antistalling bactericide for vegetables and fruits prepn. method and use thereof - Google Patents
Antistalling bactericide for vegetables and fruits prepn. method and use thereof Download PDFInfo
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- CN1270614C CN1270614C CN 200410021850 CN200410021850A CN1270614C CN 1270614 C CN1270614 C CN 1270614C CN 200410021850 CN200410021850 CN 200410021850 CN 200410021850 A CN200410021850 A CN 200410021850A CN 1270614 C CN1270614 C CN 1270614C
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Abstract
The present invention relates to refreshing bactericide for vegetables and fruits, a preparing method thereof and a purpose, which adopts a composite formula. Liquid is prepared by main raw materials which comprises water, alcohol (ethanol, glycerol, ethylene glycol, isopropyl alcohol, etc.), a visual light catalyst of loading titanium dioxide adopting MCM-41 or AlMCM-41 as a basal body or an ultraviolet catalyst (titanium dioxide, zinc oxide and magnesium oxide), part of nanometer simple substance silver, sodium hexametaphosphate, sodium silicate, etc. The present invention can effectively inhibit bacterium growth to the storage and the refreshment of fruits and vegetables, and has the advantages of long refreshing time, small nutrition substance loss, pure and normal flavour, no residual toxicity and no environment pollution. The present invention can effectively inhibit microbial growth, such as bacteria, mildew, etc., under a closed condition, and can play the role of preventing mildew, insect damage, oxidation deterioration and CO2 influence.
Description
Technical field: the present invention relates to a kind of fruit and vegetable antistaling disinfectant and preparation method thereof and purposes.
Background technology: temperature, humidity, gas and anticorrosion be four key elements of the modern preservation technique of fruits and vegetables.On this class problem of solution, the mechanical refrigeration mode is taked in temperature control usually, and the anticorrosion chemical agent that mainly utilizes is handled, and spontaneous controlled-atmosphere and mechanical controlled atmosphere dual mode are mainly taked in humidity and gas control.These methods respectively have pluses and minuses: the required size investment of low temperature controlled atmosphere is big, the energy consumption height; And common preserving and sterilizing agent may have the influence of residual poisonous substance, especially is the preserving and sterilizing agent of main component with the organic matter.Fruits and vegetables are in storage, and itself can discharge ethene or carbon dioxide, and these gases can cause that fruit and vegetable physiological regulation changes, and impel fruits and vegetables after-ripening, aging so that rot.
For eliminating the influence to fruits and vegetables of ethene that fruits and vegetables emit and carbon dioxide, the antistaling agent that uses mainly is based on the absorbent-type of active carbon with based on the oxidation Decomposition type two big classes of potassium permanganate at present.Though the former removes the rate height, adsorb and promptly lost efficacy after saturated, even also have the danger of desorption; The latter exists then that the speed of removing is slow, the unconspicuous shortcoming of fresh-keeping effect.Utilize antistaling coating to regulate the breathing and the moisture transpiration of fruits and vegetables, suppress vigorous physiological metabolism and change, reduce the nutrition loss, can realize the purpose of Long-term Storage, maintenance quality.Therefore, antistaling coating is a kind of air regulating fresh-keeping method preferably.What deserves to be mentioned is that the preparation method of CN01129896.0, nano photocatalyst film and fruits and vegetables, flower freshness device are the nano coatings by equipment, under ultraviolet ray, thereby ethene is decomposed into carbon dioxide and water reaches fresh-keeping purpose.Photocatalyst is borrowed the ultraviolet ray that absorbs sunlight and fluorescent lamp, excite airborne oxygen and hydrone, produce negative oxygen base and hydroxyl free radical, destroy the cell membrane of bacterium with superpower oxidability, cytoplasm is run off, play the activity that suppresses virus, the effect of removing bacterium in the air.
Fruits and vegetables are subjected to the influence of microorganism in surface soil, the air in growth course, fruit and vegetable surfaces has a large amount of harmful germs, can breed in a large number in storage, impels fruits and vegetables to rot, so in preserving fruit and vegetable utilizing is handled, at first should carry out sterilization processing.The bactericide of Xiao Shouing in the market, major part all has certain toxicity, and its residue is harmful to health.Adopt in practice to be coated with to be prevented to preserve fruits and vegetables by multiple means such as fresh-keeping method, chemical storage method, biological antiseptic methods and infected by mould and rot, or suppress fruits and vegetables metabolism, prevent aging, prolong storage ﹠ fresh-keeping period.
From choice of preservatives, what China's application in the past was maximum is thiophanate and two kinds of bactericide of carbendazim, its outstanding feature is efficient and systemic action, major defect are arranged is that systemic action then causes the residual quantity height owing to the resistance fungus strain occurs comparatively fast causing drug effect to reduce.This anticorrisive agent is if be used for thin skin fruits such as apple, pears, and residual dense agricultural chemicals flavor then becomes its significant disadvantages.CN95108788.6 and CN01136473.4 disclose fresh-keeping coating material for fruit and vegetable and fruit and vegetable fresh-keeping agent and operation technique thereof, and the two has all used the organic anti-corrosive agent.CN00127606.9 is antibacterial, antimildew and antistaling film and manufacture method thereof, with the silicate clay particle of nanometer-level silver, does not possess the performance of decomposing ethene in surface and the micropore.
Summary of the invention: the invention provides a kind of preserving fruit and vegetable utilizing bactericidal agent and preparation method thereof and purposes, it in conjunction with being used for preserving fruit and vegetable utilizing, does not contain anticorrisive agent to the sterilizing function of light-catalysed decomposition ethene function and nanometer simple substance silver, not only can kill mould, but also can killing bacteria, because this product contains inorganic fungicide, can not make fruit produce peculiar smell, except that sterilization, the function of decomposing ethene in addition, compare with existing tin foil, composition and effect are all different, and not chloride; Manufacture craft is simple, and raw material is cheap and easy to get, the safety non-toxic evil, and fresh-keeping effect is better.
The present invention realizes by following technical measures:
A kind of preserving fruit and vegetable utilizing bactericidal agent is characterized in that: it is that the pH value that contains nano metal, photochemical catalyst, dispersant and water is 6～7 neutral aqueous solution, contains following composition by weight percentage:
Nano metal 0.10～2.2
Photochemical catalyst 1.0～25.0
Dispersant 0.50～12.0
Water 80～98
Above-mentioned dispersant can be one or more in ethylene glycol, calgon, sodium metasilicate, the ethanol, and wherein ethylene glycol can use separately, and other several need use jointly.
Above-mentioned nano metal is 5～60nm simple substance silver, photochemical catalyst comprises that supported titanium dioxide is the visible light catalyst or the ultraviolet light catalyst of matrix with Metaporous silicon dioxide material MCM-41 or AlMCM-41, can be at least two kinds in 10～30nm titanium dioxide, 5～30nm zinc oxide, the 2～30nm magnesia.
A kind of preserving fruit and vegetable utilizing bactericidal agent preparation method is planted raw material with above-mentioned first three and is mixed in proportion, adds in the entry to stir, and making beating is coated on the paper substrates then.
Described preserving fruit and vegetable utilizing bactericidal agent can, adopt brushing, spray or be soaked on the paper as carrier with paper at normal temperatures, after drying, as fruit fresh-keeping and storage; This tin foil also can be processed into packing paper use in packaging bag, the case; The controlled atmosphere that can be used for fresh fruit, vegetables, fresh flower; Manufacture antistaling coating and be suitable for preserving pears, mango, lichee, apple, tomato, fragrant Jiao, peach, green pepper, the multiple fruits and vegetables of pineapple.
Particularly, because of there not being ultraviolet light irradiation, photocatalysis Decomposition ethene and germicidal efficiency will significantly reduce common ultraviolet light catalyst at night with after turning off the light.And preserving fruit and vegetable utilizing bactericidal agent provided by the invention has adopted high efficiency photocatalyst, and higher activity is also arranged under visible light, even thereby need not ultraviolet ray also can sterilization.
Preserving fruit and vegetable utilizing material provided by the invention does not need big equipment investment, and using method is easy.Can be used as antistaling coating, the surface that directly smear, method such as sprinkling imposes on fruits and vegetables, air-dry back forms the very thin transparent coating of one deck, in order to strengthen the protective action of fruits and vegetables cortex; Suitably stop up aperture portion, suppress respiration, reduce nutrient consumption; Suppress moisture and distribute, prevent the shrinkage wilting; Suppress microorganism and invade, prevent putrid and deteriorated.Also the powdery antistaling agent can be packed in the ventilative good cloth bag, seal standby.
The specific embodiment:
Embodiment 1.
A. preparing supported titanium dioxide by the CN1431051 disclosed method is the visible light catalyst of matrix with MCM-41 or AlMCM-41.
B. the preparation of nano silver colloidal sol: the 16g silver nitrate joins the sodium borohydride aqueous solution that is dissolved in gained in the 100kg water by the 8g sodium borohydride after dissolving in the 100kg water.
C. the made visible light catalyst of 5g step a is added in the solution of 1800g water and 180g ethylene glycol, vigorous stirring adds the made nano silver colloidal sol of 100g step b again, fully stirs and promptly gets the preserving fruit and vegetable utilizing bactericidal agent.
Embodiment 2.
The made photochemical catalyst of step a is added in the solution of 1500g water and 15g calgon, 5g sodium metasilicate and 50g99% ethanol gained among the 3g embodiment 1, vigorous stirring, add the made nano silver colloidal sol of step b among the 100g embodiment 1 again, fully stir and promptly get the fruit and vegetable antistaling disinfectant.
Embodiment 3.
The ultraviolet light catalyst of 8g titanium dioxide (12nm) and 2g zinc oxide (20nm) is added in the solution of 2000g water and 18g ethylene glycol and 30g ethanol, vigorous stirring, add the made nano silver colloidal sol of step b among the 120g embodiment 1 again, fully stir and promptly get the fruit and vegetable antistaling disinfectant.
Embodiment 4.
The ultraviolet light catalyst of 6g titanium dioxide (12nm) and 3g magnesia (16nm) is added in the solution of 1500g water and 13g ethylene glycol and 20g ethanol, vigorous stirring, add the made nano silver colloidal sol of step b among the 80g embodiment 1 again, fully stir and promptly get the fruit and vegetable antistaling disinfectant.
Embodiment 5.
The ultraviolet light catalyst of 10g titanium dioxide (12nm), 2g zinc oxide (20nm) and 1g magnesia (16nm) is added in the solution of 2200g water and 20g ethylene glycol and 16g ethanol, vigorous stirring, add the made nano silver colloidal sol of step b among the 60g embodiment 1 again, fully stir and promptly get the fruit and vegetable antistaling disinfectant.
Application example:
1. spray the made fruit and vegetable antistaling disinfectant of 20g on the wrapping paper of 1m2, promptly get and can be used for fresh-keeping wrapping paper.
2. directly spray the made fruit and vegetable antistaling disinfectant of 20g on the fruit of using the ordinary packing wrapper, or be sprayed directly on the fruit and vegetable, also can be sprayed at the Packaging Box the inside of packaging fruit vegetables.
Claims (4)
1. a preserving fruit and vegetable utilizing bactericidal agent is the neutral aqueous solution that contains 0.10～2.2 Nano Silver, 1.0～25.0 photochemical catalysts, 0.50～12.0 dispersant and 80～98 water by weight percentage, and pH value of aqueous solution is 6～7,
Described photochemical catalyst is that supported titanium dioxide is the visible light catalyst or the ultraviolet light catalyst of matrix with MCM-41 or AlMCM-41, and ultraviolet light catalyst is at least two kinds in 10～30nm titanium dioxide, 5～30nm zinc oxide, the 2～30nm magnesia;
Described dispersant is one or more in ethylene glycol, calgon, sodium metasilicate, the ethanol, and wherein ethylene glycol can use separately, and other several need use jointly.
2. preserving fruit and vegetable utilizing bactericidal agent according to claim 1 is characterized in that: Nano Silver is 5～60nm simple substance silver.
3. the preparation method of the described preserving fruit and vegetable utilizing bactericidal agent of claim 1, make according to the following steps: with claim 1 described first three plant raw material and mix in proportion, add in the entry and stir, making beating is coated on the paper substrates then.
4. the application of the described preserving fruit and vegetable utilizing bactericidal agent of claim 1 at normal temperatures,, is adopted brushing, is sprayed or be soaked on the paper as carrier with paper, makes fruit fresh-keeping and the tin foil of preserving usefulness after drying; This tin foil is processed into the interior packing paper of packaging bag, case, is used for the controlled atmosphere of fresh fruit, vegetables, fresh flower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021850 CN1270614C (en) | 2004-02-15 | 2004-02-15 | Antistalling bactericide for vegetables and fruits prepn. method and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021850 CN1270614C (en) | 2004-02-15 | 2004-02-15 | Antistalling bactericide for vegetables and fruits prepn. method and use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559238A CN1559238A (en) | 2005-01-05 |
| CN1270614C true CN1270614C (en) | 2006-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410021850 Expired - Fee Related CN1270614C (en) | 2004-02-15 | 2004-02-15 | Antistalling bactericide for vegetables and fruits prepn. method and use thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326170A (en) * | 2014-08-29 | 2015-02-04 | 成都大学 | Photocatalytic air conditioning package technology |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019571B (en) * | 2007-02-12 | 2011-01-19 | 南昌大学 | Browning preventing broad spectrum fruit preservative and its preparation process |
| CN101147615B (en) * | 2007-10-23 | 2011-06-22 | 江南大学 | Frozen-dried, preserving and sterilizing method for with combined nanometer silver film and microwave drying method |
| JP3156597U (en) * | 2009-10-23 | 2010-01-07 | 株式会社神堂 | Freshness preservation sheet |
| CN102077865B (en) * | 2010-11-19 | 2013-12-04 | 华南农业大学 | Titanium dioxide nano particle and litchi nano preservative |
| CN102388956B (en) * | 2011-11-16 | 2013-02-27 | 宁波海通食品科技有限公司 | Ultraviolet and nano zinc oxide combined sterilizing method for convenient vegetable dishes |
| CN103054129B (en) * | 2012-12-31 | 2014-03-26 | 杭州师范大学 | Application of nanometer zinc oxide as antimicrobial |
| CN107771917A (en) * | 2017-11-17 | 2018-03-09 | 东北农业大学 | A kind of osmunda polysaccharides tomato pr eservation agent |
| CN108184987A (en) * | 2017-12-29 | 2018-06-22 | 宁波市农业科学研究院 | A kind of fruits and vegetables composite preservative and its preparation and application method |
| CN112500751B (en) * | 2020-10-29 | 2022-07-01 | 鲸果科技(杭州)有限公司 | Photocatalytic preservative coating and super-fresh paper coated with same |
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2004
- 2004-02-15 CN CN 200410021850 patent/CN1270614C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326170A (en) * | 2014-08-29 | 2015-02-04 | 成都大学 | Photocatalytic air conditioning package technology |
| CN104326170B (en) * | 2014-08-29 | 2016-08-24 | 成都大学 | A kind of photocatalysis controlled atmospheric packing technology |
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| Publication number | Publication date |
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| CN1559238A (en) | 2005-01-05 |
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