CN115316433A - Method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used by same - Google Patents
Method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used by same Download PDFInfo
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- CN115316433A CN115316433A CN202211126370.0A CN202211126370A CN115316433A CN 115316433 A CN115316433 A CN 115316433A CN 202211126370 A CN202211126370 A CN 202211126370A CN 115316433 A CN115316433 A CN 115316433A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
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Abstract
A method for inhibiting germination of stored potato and potato germination inhibitor used therein are provided, wherein potato is completely immersed in the potato germination inhibitor, and the inhibitor is taken out and stored after forming a film on the surface of the potato. Through comparative research, the germination rate of potatoes treated by the potato germination inhibitor is reduced by about 1 time compared with that of common potatoes.
Description
Technical Field
The invention relates to a method for inhibiting the sprouting of stored potatoes and a potato sprouting inhibitor used by the method, belonging to the technical field of agricultural product storage.
Background
The potato is an economic crop planted in large scale in China, the tuber of the potato contains a large amount of starch, can provide abundant heat for human bodies, and is rich in protein, amino acid, multiple vitamins and mineral substances, and particularly the vitamin content of the potato is far higher than that of other grain crops.
With the continuous development of the potato market, the storage quantity of fresh potatoes is rapidly increased, and the storage period is further prolonged. However, potatoes tend to germinate during storage, which is detrimental to the production and utilization of potato products. Previous studies have shown that during storage of potato tubers, 3 physiological stages of post-maturation, dormancy and germination occur. In the post-maturation stage, picked potatoes are not completely mature, the skins of the potatoes are not cork yet, the water content is higher, the respiration is vigorous, the skins of the potato blocks can be fully cork generally after about 30 days of physiological activities, and the process is called the post-maturation stage or the post-maturation stage; during this period the potatoes evaporate a large amount of water and the weight is severely lost, while the temperature of the potato mass slowly rises. In the dormancy stage, the potatoes are switched into the dormancy stage after the post-maturation stage, namely, the sprouts in the sprout eyes of the tubers are in a relatively stable and non-sprouting state, and at the moment, the epidermis of the potatoes is fully lignified, and the wounds are healed; the potato surface is dry, the respiration intensity and other physiological and biochemical activities are reduced and gradually become the lowest, and the loss of tuber substances is the least; the length of the dormancy stage is different according to varieties, the early-maturing variety is shorter, the late-maturing variety is longer, and the general range is 15-150 days. During germination, the potato tubers already have the ability to germinate through a series of changes during storage. When the potatoes are in a suitable environment, they begin to germinate. Therefore, the key to reducing the germination rate during storage of potatoes is to extend the dormancy period, i.e. to create external conditions unsuitable for potato germination.
Disclosure of Invention
The invention aims to provide a method for inhibiting sprouting of stored potatoes and a potato sprouting inhibitor used by the method.
In order to realize the purpose, the technical scheme provided by the invention is as follows: a potato germination inhibitor is prepared by the following steps:
step 1: preparation of Chitosan acetic acid solution
Adding chitosan into acetic acid solution, and stirring at 70-90 deg.C to obtain chitosan acetic acid solution;
and 2, step: preparing attapulgite solution
Adding attapulgite into deionized water to prepare attapulgite suspension;
and 3, step 3: making zein solution
Adding zein into the ethanol solution, and then uniformly mixing the zein with the chitosan acetic acid solution and the attapulgite suspension to obtain a zein solution;
and 4, step 4: making potato germination inhibitor
Adding glycerol into the zein solution, and stirring at 70-90 deg.C for 0.3-0.7 hr to obtain potato germination inhibitor.
The preferable technical scheme is as follows: the ratio of chitosan to acetic acid solution is 1g:45-65mL, and the mass fraction of the acetic acid solution is 1.5-2.5%.
The preferable technical scheme is as follows: the ratio of the attapulgite to the deionized water is 0.125g:8-12mL, and the fineness of the attapulgite is 400-800 meshes.
The preferable technical scheme is as follows: the proportion of zein to the ethanol solution is 0.1-0.5g:40mL, and the volume fraction of the ethanol solution is 85-95%.
The preferable technical scheme is as follows: the mass ratio of the zein to the glycerol is 0.1-0.5:0.3.
the preferable technical scheme is as follows: the stirring speed during stirring was 150 to 250rpm, and stirring was performed under closed conditions.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a method for inhibiting germination of stored potato comprises soaking potato completely in the potato germination inhibitor, taking out, and storing after the inhibitor forms a film on the surface of potato.
Due to the application of the technical scheme, compared with the prior art, the invention has the advantages that:
through comparative research, the germination rate of potatoes treated by the potato germination inhibitor is reduced by about 1 time compared with that of common potatoes.
Drawings
FIG. 1 shows potatoes coated with a potato germination inhibitor.
FIG. 2 shows the effect of different formulation ratios on potato germination.
FIG. 3: (a) control group: photos of potatoes which are not coated with the sprout inhibitor after being cultivated for 20 days; (b) experimental groups: and (4) photo of the potato coated with the sprout inhibitor after 20 days of cultivation.
Detailed Description
The following description of the embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention to the particular embodiments disclosed.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.
In describing the preferred embodiments, specific terminology may be employed for the sake of clarity; however, it is not intended that the disclosure herein be limited to the specific terminology so selected; and it is to be understood that each specific element includes all equivalent techniques that perform the same function, operate in a similar manner, and achieve a similar result.
Example 1: method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used in method
TABLE 1 Experimental proportioning (per 100mL solution)
1. Preparation of chitosan solution: 1.00g of chitosan was accurately weighed, placed in a 50mL 2% acetic acid solution beaker, and the beaker was placed in a 80 ℃ water bath and stirred with a glass rod for 30min.
2. Preparing an attapulgite solution: accurately weighing the attapulgite by an electronic balance, suspending the attapulgite in deionized water, uniformly stirring, and mixing with a chitosan solution.
3. Preparing a corn protein solution: dissolving zein in 90% ethanol solution, stirring, and mixing with the above solution.
4. 0.6g of glycerol was weighed into the above solution and stirred at 80 ℃ for 30min to completely mix the solution.
5. Cooling the prepared solution to room temperature, and uniformly coating the solution on the surface of the potato to make the surface of the potato fully contact with the reagent, as shown in fig. 1. The potatoes are placed at room temperature, and after standing for 24 hours, the potatoes are placed into a stuffy box to be cultured at 25 ℃ (about 50mL of distilled water is reserved at the bottom of the stuffy box to ensure that the potatoes are in a proper moist condition), and the sprouting condition is continuously observed.
Example 2: method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used by same
In the sixth group of example 1 (each 100mL of the nano-scale inhibitor is prepared by dissolving 1g of chitosan in 50mL of 2% acetic acid solution, 0.125g of attapulgite in 10mL of deionized water, and 0.125g of zein in 40mL of 90% ethanol), the experiment effect is the best, namely the germination rate and decay rate of potatoes are low, so the experiment is carried out by adopting the mixture ratio of the nano-scale inhibitor.
The experimental group without attapulgite and with the same proportion is set, and the influence of the attapulgite on the potato germination is explored. Meanwhile, an experimental group with high zein and low zein nano inhibitors is arranged to explore the bud inhibition effect of the zein content on the potatoes. The experimental formulation is set as shown in table 2 below, and the results are shown in fig. 2.
TABLE 2 Experimental proportions (per 100mL solution)
Example 3: method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used by same
The method of the invention is adopted to carry out the germination inhibition treatment on the potatoes; the treated potatoes are placed at constant temperature and constant humidity, and the sprouting condition of the potatoes is recorded every day at regular time.
Through comparative research, the germination rate of potatoes treated by the potato germination inhibitor is reduced by about 1 time compared with that of common potatoes.
The zein in the formula of the experimental group nano inhibitor is 0.125g.
Potato germination after 30 days: the experiment simulates the environmental conditions of the potatoes during the storage period, and the result shows that the potatoes treated by the nano inhibitor have no germination and no decay, and the storage effect is good; in contrast, the control group had essentially all germinated, and some individuals germinated longer (longer shoots). Therefore, after the potatoes are harvested, the individual germination can be effectively inhibited by adopting the nano inhibitor for treatment, and the loss is reduced.
Example 4: method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used by same
The stored potatoes were cut into pieces, planted in soil, and cultivated in a greenhouse for 20 days. As shown in FIG. 3, it is clear from FIG. 3 that the preservation method has no influence on the growth of the potato.
Example 5: method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used in method
A potato germination inhibitor is prepared by the following steps:
step 1: preparation of Chitosan acetic acid solution
Adding chitosan into acetic acid solution, and stirring at 70 ℃ to obtain chitosan acetic acid solution;
and 2, step: preparing attapulgite solution
Adding attapulgite into deionized water to prepare attapulgite suspension;
and step 3: making zein solution
Adding zein into the ethanol solution, and then uniformly mixing the zein with the chitosan acetic acid solution and the attapulgite suspension to obtain a zein solution;
and 4, step 4: preparation of potato germination inhibitor
And adding glycerol into the zein solution, and stirring at 70 ℃ for 0.3 hour to obtain the potato germination inhibitor.
The preferred embodiment is: the ratio of chitosan to acetic acid solution is 1g:45mL, and the mass fraction of the acetic acid solution is 1.5%.
The preferred embodiment is: the ratio of the attapulgite to the deionized water is 0.125g:8mL, the fineness of the attapulgite is 400 meshes.
The preferred embodiment is: the ratio of zein to the ethanol solution is 0.1g:40mL, the volume fraction of the ethanol solution is 85%.
The preferred embodiment is: the mass ratio of zein to glycerin is 0.1:0.3.
the preferred embodiment is: the stirring speed at the time of stirring was 150rpm, and stirring was performed under a closed condition.
A method for inhibiting germination of stored potato comprises soaking potato completely in the potato germination inhibitor, taking out, and storing after the inhibitor forms a film on the surface of potato.
Example 6: method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used by same
A potato germination inhibitor is prepared by the following steps:
step 1: preparation of Chitosan acetic acid solution
Adding chitosan into acetic acid solution, and stirring at 90 ℃ to prepare chitosan acetic acid solution;
step 2: preparing attapulgite solution
Adding attapulgite into deionized water to prepare attapulgite suspension;
and step 3: making zein solution
Adding zein into the ethanol solution, and then uniformly mixing the zein with the chitosan acetic acid solution and the attapulgite suspension to obtain a zein solution;
and 4, step 4: making potato germination inhibitor
Adding glycerol into the zein solution, and stirring at 90 deg.C for 0.7 hr to obtain potato germination inhibitor.
The preferred embodiment is: the ratio of chitosan to acetic acid solution was 1g:65mL, and the mass fraction of the acetic acid solution is 2.5%.
The preferred embodiment is: the ratio of the attapulgite to the deionized water is 0.125g:12mL, the fineness of the attapulgite is 800 meshes.
The preferred embodiment is: the ratio of zein to the ethanol solution is 0.5g:40mL, the volume fraction of the ethanol solution is 95%.
The preferred embodiment is: the mass ratio of the zein to the glycerol is 0.5:0.3.
the preferred embodiment is: the stirring speed at the time of stirring was 250rpm, and stirring was performed under a closed condition.
A method for inhibiting germination of stored potato comprises soaking potato completely in the potato germination inhibitor, taking out, and storing after the inhibitor forms a film on the surface of potato.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A potato sprouting inhibitor characterized by comprising: the preparation method comprises the following steps:
step 1: preparation of Chitosan acetic acid solution
Adding chitosan into acetic acid solution, and stirring at 70-90 deg.C to obtain chitosan acetic acid solution;
step 2: preparing attapulgite solution
Adding attapulgite into deionized water to prepare attapulgite suspension;
and step 3: making zein solution
Adding zein into the ethanol solution, and then uniformly mixing the zein with the chitosan acetic acid solution and the attapulgite suspension to obtain a zein solution;
and 4, step 4: making potato germination inhibitor
Adding glycerol into the zein solution, and stirring at 70-90 deg.C for 0.3-0.7 hr to obtain potato germination inhibitor.
2. The potato germination inhibitor according to claim 1, wherein: the ratio of chitosan to acetic acid solution is 1g:45-65mL, and the mass fraction of the acetic acid solution is 1.5-2.5%.
3. The potato germination inhibitor according to claim 1, wherein: the ratio of the attapulgite to the deionized water is 0.125g:8-12mL, the fineness of the attapulgite is 400-800 meshes.
4. The potato germination inhibitor according to claim 1, wherein: the proportion of the zein to the ethanol solution is 0.1-0.5g:40mL, and the volume fraction of the ethanol solution is 85-95%.
5. The potato germination inhibitor according to claim 1, wherein: the mass ratio of the zein to the glycerol is 0.1-0.5:0.3.
6. the potato germination inhibitor according to claim 1, wherein: the stirring speed during stirring was 150 to 250rpm, and stirring was performed under closed conditions.
7. A method of inhibiting sprouting in stored potatoes comprising: completely soaking the potatoes into the potato germination inhibitor, taking out the potatoes, and storing the potatoes after the inhibitor forms a film on the surfaces of the potatoes; the potato germination inhibitor is the potato germination inhibitor according to any one of claims 1 to 6.
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| CN202211126370.0A CN115316433A (en) | 2022-09-16 | 2022-09-16 | Method for inhibiting sprouting of stored potatoes and potato sprouting inhibitor used by same |
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Citations (6)
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| CN103588997A (en) * | 2013-11-15 | 2014-02-19 | 福州西城食品有限公司 | Edible film preparation method based on compound of protein and polysaccharide |
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| CN107197938A (en) * | 2017-05-13 | 2017-09-26 | 蚌埠市乔峰农业蔬菜专业合作社 | A kind of method for suppressing potato sprout |
| CN107372812A (en) * | 2017-07-28 | 2017-11-24 | 中国科学院合肥物质科学研究院 | A kind of potato sprouting inhibitor and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588997A (en) * | 2013-11-15 | 2014-02-19 | 福州西城食品有限公司 | Edible film preparation method based on compound of protein and polysaccharide |
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| CN106957458A (en) * | 2017-03-27 | 2017-07-18 | 广西大学 | A kind of preparation method of natural complex fresh-keeping film or coating using chitosan zeins as raw material |
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| CN107372812A (en) * | 2017-07-28 | 2017-11-24 | 中国科学院合肥物质科学研究院 | A kind of potato sprouting inhibitor and preparation method thereof |
| CN110214777A (en) * | 2019-06-05 | 2019-09-10 | 甘肃省农业科学院农产品贮藏加工研究所 | A kind of potato tubers germination regulation sustained release agent prescription and preparation method thereof |
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