CN1144042A - Fresh-keeping coating material for fruit and vegetable - Google Patents
Fresh-keeping coating material for fruit and vegetable Download PDFInfo
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- CN1144042A CN1144042A CN 95108788 CN95108788A CN1144042A CN 1144042 A CN1144042 A CN 1144042A CN 95108788 CN95108788 CN 95108788 CN 95108788 A CN95108788 A CN 95108788A CN 1144042 A CN1144042 A CN 1144042A
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Abstract
The method for preparation of fresh-keeping coating material for fruits and vegetables is characterized by using water as selvent, hydroxybenzoates as preserving agent, sodium alginate, starch and sodium oleate as film-forming material, making its preserving agent possess broad-spectrum bacteriostatic and fungistatic function, and forming air-permeable pores on the coating film by means of distribution of starch microparticles, changing air permeability by regulating the blending quantity of starch so as to be adaptable to respiratory intensity of different fruits and vegetables. Said fresh-keeping coating material is applicable to storage of several fruits and vegetables, such as apple, pear, green pepper and watermelon, etc..
Description
The invention relates to the method for preparing fresh-keeping coating material for fruit and vegetable.
As everyone knows, fresh-keeping coating material for fruit and vegetable has following significant advantage because of its comprehensive function: (1) can mix anticorrisive agent, suppresses the breeding of microorganism on the fruit face, prevents to preserve fruits and vegetables and rots.(2) pellicle suppresses the breathing and the moisture content transpiration of fruits and vegetables, that is suppresses metabolism, prolongs shelf-life.
The coating fresh-keeping method is little because of its investment, cost is low, easy to operation, remarkable in economical benefits, and report is arranged during the domestic and international research achievement.Yet up to now, this class storage practice is not generally promoted as yet, and its reason is many-sided.
From choice of preservatives, what China's application in the past was maximum is thiophanate and two kinds of bactericide of carbendazim, and its outstanding feature is efficient and has systemic action.Major defect is because the resistance fungus strain comparatively fast occurs causing drug effect to reduce, and systemic action causes the residual quantity height.The sec-butylamine anticorrisive agent of beginning effluent north agriculture university in 1976 development is being obtained good result aspect the fruit storages such as citrus, obtained to use widely, and sec-butylamine has good inhibition effect to mould, and to cause rotten bacterium invalid to many.This anticorrisive agent is its shortcoming if be used for the residual dense agricultural chemicals flavor of thin skin fruits such as apple, pears in addition.
From filmogen, the most famous with the shellac coating that Chinese forest-science academy woodsization in 1977 is developed, increase fruit gloss, water-holding fresh-keeping reduces and rots, and is particularly suitable for the shelf life that short-term prolongs fruit, improves commodity price and competitiveness.But based film agent such as lac, shellac, Brazil wax and paraffin generally are not suitable for long term storage, and because of its too densification of filming, long term storage can cause fruit to suffocate and go bad.Japan publication JP59-216542 proposes to form gel with sodium alginate and calcium ion, and last and polyvinyl alcohol water solution forms the film of interfacial polymerization.One of existing problems are that sodium alginate gel is difficult to even dispersion, bring difficulty for filming of back.
Purpose of the present invention is that selection is a kind of all has efficient inhibiting anticorrisive agent to fungi and bacterium, enlarges the fruit vegetables storing kind, improves antiseptic effect and does not change the original local flavor of fruits and vegetables.
Another object of the present invention provides a kind of coating that can regulate the porosity of filming arbitrarily, to adapt to the respiratory intensity of different fruits and vegetables, the metabolism of preserving fruits and vegetables is reduced to bottom line safely, prolongs storage period.
For above-mentioned consideration, the present inventor is anticorrisive agent through development test repeatedly with the parabens, is that filmogen is made into fresh-keeping coating material for fruit and vegetable with alginate, starch and higher fatty acid salt.
According to the present invention, said here parabens is meant a kind of among methyl p-hydroxybenzoate, ethyl ester, propyl ester, the butyl ester or several.This material all has the good restraining effect to fungi and bacterium.What preferentially select for use is the mixture of ethyl-para-hydroxybenzoate and propyl ester.
According to the present invention, said alginate is the solubility alginate, and what preferentially select for use is sodium alginate.
According to the present invention, said starch is meant cornstarch or potato starch.Increase the ratio of starch, can increase air-vent, thereby adapt to different storage objects.
According to the present invention, said higher fatty acid salt is the water-soluble substances as surfactant, the soap of C-16～18 preferably, and what preferentially select for use is enuatrol.Because of it cheap and easy to get and also can make be coated with by liquid good at the pericarp surface spreading.
According to the present invention, adopt parabens as anticorrisive agent, its reason at first is that it is generally acknowledged by China and countries in the world as safety, food preservative long-acting, wide spectrum, not only mould fungus inhibition is effective for it, and it is effective to suppress bacterium, concentration of preservatives low (about 0.2%) in addition, the unlikely residual peculiar smell of fruit of giving, more than 2 all be better than class agricultural chemicals type bactericide such as sec-butylamine.
According to the present invention, after fruits and vegetables soak with antistaling coating, the surface forms semipermeable membrane, can carry out the single fruit controlled atmosphere, reduces oxygen and enters fruit inside, make part do " hibernation " state, the respiration that can significantly suppress fruits and vegetables, transpiration, physiological and biochemical procedures such as metabolism and the conversion of fruit look, postpone physiological aging, prolong shelf-life.The film that contains anticorrisive agent also can be isolated from the outside fruits and vegetables, makes to cause rotten bacterium and be difficult to invade.One aspect of the present invention utilizes sodium alginate can form fine and close and pliable and tough film, mix simultaneously the starch particulate therein, in film, be scattered in ventilative micropore, and can regulate microporosity, to adapt to the respiratory intensity of different fruits and vegetables by the amount that starch is mixed in change.
Filmogen sodium alginate, starch and enuatrol all extract in the natural biological body, edible harmless, free from extraneous odour, be difficult for going mouldy, character is soft, fruits and vegetables there is not bad chemical stimulation effect, and the mechanical slight wound that fruit surface partly is subjected to had the healing effect, make that the wound scope maintains the original state, scabs, without putrefaction spreads.
According to the present invention, the fresh-keeping coating material for fruit and vegetable component is as follows:
Sodium alginate 0.2～1.5%, preferably 0.4～0.6%,
Starch 0.0～2.0% is regulated its volume according to the storage object.
Enuatrol 0.05～0.5%, preferably 0.08～0.2%.
Ethyl-para-hydroxybenzoate: 0.08～0.16%, preferably 0.16%.
To the stupid propyl formate of hydroxyl: 0.01～0.04%, preferably 0.04%.
Water: surplus, about 99%.According to the present invention, antistaling coating is prepared as follows:
Drop into quantitative parabens in quantitative boiling water, heating keeps little boiling, and can fully dissolve in about 10 minutes.Stopping to heat and add quantitative sodium alginate then successively. the enuatrol stirring makes molten.Must treat to add again after last additive fully dissolves the additive of back.After the temperature for the treatment of solution is reduced to room temperature, mix quantitative starch again and stir.
The antistaling coating usage is very simple: the fruits and vegetables of newly plucking are spread in a single layer in wire mesh cage, and whole cage immerses and is coated with by in the liquid, drains, and blowing is dry, and fruits and vegetables are sorted out the bamboo basket that places sterilization, puts in the air-cooler storage storehouse again.
Result of use: over 3 years the fresh-keeping test of prolonging the limit apple pear is shown that the present invention has good corrosion-resistanting fresh-keeping effect.
Apple pear is to prolong limit special product fruit, crisp succulence bright in colour, sweet but be difficult for to store.The inventor utilizes the civil air defense works to carry out storage test.At the bottom of being September, store to April in next year picking time.The people's air defense hole is provided with ventilation blower, and range of temperature is at 12 ℃ → 8 ℃ → 3 ℃ → 1 ℃ → 2 ℃ → 3 ℃, and relative air humidity remains on 70～90%.
It is as follows to adopt antistaling coating of the present invention to soak fruit back storage effect in 1993:
| The quantity kilogram | Storage period is big | Mashed consumption % | Drying loss % | Diseased fruit rate % | Total losses % | Good fruit rate % | The hardness pound/centimetre 2 | Soluble solid % | |
| Test group | 500 | ?200 | ?1.3 | ?1.4 | ?0.3 | ?3.0 | ?97.0 | ?13.6 | ?13.8 |
| Control group | 500 | ?200 | ?4.8 | ?3.5 | ?3.7 | ?12.0 | ?88.0 | ?8.4 | ?13.1 |
Annotate: the hardness of new fresh fruit is 15.5 pounds/centimetre
2, soluble solid is 12.4%.
Through storage in 200 days, the appearance change of the fruit of filming was very little, and color and luster is still more bright-coloured, and completely filled fruit has kept original local flavor substantially, and contrast fruit color and luster is gloomy, wilts.
Use this antistaling coating to apple in addition, green pepper, watermelon have been done storage test, also obtain remarkable result.
Be embodiments of the invention below.
Example 1: apple pear antistaling coating
In iron pan, add 50 kg of water, be heated to and boil.Drop into ethyl-para-hydroxybenzoate 80 grams and propylparaben 20 grams, stir and the continuation heating, keep little boiling to make medicine fully dissolve (about 10 minutes).Stop heating, add sodium alginate 250 grams, enuatrol 50 grams more successively, do not stop stirring and make the two fully dissolving respectively successively.When treating that water temperature is reduced to room temperature, add starch 350 grams, stir.
Example 2 green pepper antistaling coatings
The method of operating forward part is identical with example 1, but the starch input amount changes 175 grams into.Add " white cat " liquid detergent (Shanghai Synthetic Detergents Factory's production) 45 grams at last, stir.The purpose that adds liquid detergent is that antistaling coating is sprawled at the fruit face with smooth wax.
Example 3 watermelon antistaling coatings
Method of operating is identical with example 2, but the starch input amount changes 500 grams into.
Claims (1)
1. preparation method who is used for the coating of fruit and vegetable fresh preservation, it is characterized in that, with water is solvent, with the parabens is anticorrisive agent, with sodium alginate, starch and enuatrol is filmogen, fruits and vegetables soak the rear surface and form fine and close pliable and tough film in coating, particularly forming with the starch particulate is the air-vent at center.
A. the content of sodium alginate is 0.2-1.5%, preferably 0.4-0.6%.
B. contents of starch is 0.0～2.0%, can regulate the starch incorporation and obtain needed ventilative porosity different fruits and vegetables classes.
C. enuatrol content 0.0-1.0%, preferably 0.08-0.2%.
D. ethyl-para-hydroxybenzoate content 0.08-0.16%, preferably 0.16%; Propylparaben content is 0.02～0.04%, preferably 0.04%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95108788 CN1144042A (en) | 1995-08-30 | 1995-08-30 | Fresh-keeping coating material for fruit and vegetable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95108788 CN1144042A (en) | 1995-08-30 | 1995-08-30 | Fresh-keeping coating material for fruit and vegetable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1144042A true CN1144042A (en) | 1997-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95108788 Pending CN1144042A (en) | 1995-08-30 | 1995-08-30 | Fresh-keeping coating material for fruit and vegetable |
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| CN (1) | CN1144042A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297601C (en) * | 1998-09-30 | 2007-01-31 | 沃纳-兰伯特公司 | Modified starch film compositions |
| CN101185461B (en) * | 2007-12-12 | 2010-12-08 | 贵州大学 | Edible fruit and vegetable preservative film powder and preparation method thereof |
| CN105123901A (en) * | 2015-10-19 | 2015-12-09 | 长沙理工大学 | Fresh-cut cress cold storage and preservation method |
| CN105211277A (en) * | 2015-11-04 | 2016-01-06 | 寇世千 | A kind of leafy vegetable antistaling agent |
| CN105400300A (en) * | 2015-12-11 | 2016-03-16 | 安徽天诺包装材料有限公司 | Safe and non-toxic coating |
| CN106615083A (en) * | 2016-11-28 | 2017-05-10 | 马永新 | Fruit and vegetable fresh-keeping method |
| CN107087679A (en) * | 2017-05-10 | 2017-08-25 | 常德金德镭射科技股份有限公司 | A kind of fruit antistaling coating and preparation method thereof |
| CN108967526A (en) * | 2018-06-11 | 2018-12-11 | 贺州学院 | A kind of sodium alginate complex ester coating liquid and the preparation method and application thereof |
| CN112807329A (en) * | 2019-11-18 | 2021-05-18 | 亳州中强中药饮片有限公司 | Antiseptic traditional Chinese medicine decoction pieces and preparation method thereof |
-
1995
- 1995-08-30 CN CN 95108788 patent/CN1144042A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297601C (en) * | 1998-09-30 | 2007-01-31 | 沃纳-兰伯特公司 | Modified starch film compositions |
| CN101185461B (en) * | 2007-12-12 | 2010-12-08 | 贵州大学 | Edible fruit and vegetable preservative film powder and preparation method thereof |
| CN105123901A (en) * | 2015-10-19 | 2015-12-09 | 长沙理工大学 | Fresh-cut cress cold storage and preservation method |
| CN105123901B (en) * | 2015-10-19 | 2018-11-02 | 长沙理工大学 | Fresh-cut cress cold storage and preservation method |
| CN105211277A (en) * | 2015-11-04 | 2016-01-06 | 寇世千 | A kind of leafy vegetable antistaling agent |
| CN105400300A (en) * | 2015-12-11 | 2016-03-16 | 安徽天诺包装材料有限公司 | Safe and non-toxic coating |
| CN106615083A (en) * | 2016-11-28 | 2017-05-10 | 马永新 | Fruit and vegetable fresh-keeping method |
| CN107087679A (en) * | 2017-05-10 | 2017-08-25 | 常德金德镭射科技股份有限公司 | A kind of fruit antistaling coating and preparation method thereof |
| CN108967526A (en) * | 2018-06-11 | 2018-12-11 | 贺州学院 | A kind of sodium alginate complex ester coating liquid and the preparation method and application thereof |
| CN112807329A (en) * | 2019-11-18 | 2021-05-18 | 亳州中强中药饮片有限公司 | Antiseptic traditional Chinese medicine decoction pieces and preparation method thereof |
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