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Nano preservative for potatoes, preparation method and use method

A preservative and potato technology, which is applied in the field of potato preservation, can solve the problems of unsuitable seeds for irradiation technology, easy residue of growth regulators, and restrictions on large-scale application, so as to reduce water adhesion ability, help freshness preservation, and reduce content Effect

Inactive Publication Date: 2018-06-29
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the physical method is costly, and the irradiation technology is not suitable for seeds; the biological method has variety restrictions; the growth regulator is easy to remain and has low toxicity, and the cost of the desiccant is high and needs to be replaced constantly
These disadvantages limit their large-scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The potato preservation process of the present embodiment is as follows:

[0019] (1) Add 100-mesh silicon dioxide to 20 mL of ethanol and stir at 300 rpm for 10 minutes to prepare a suspension with a concentration of 25 g / L;

[0020] (2) Add 15mL / L amino silicone oil to the above suspension, stir at 300rpm for 10 minutes, dry at 40°C for 1 hour, and grind to 100 mesh to obtain hydrophobic silica, namely potato fresh-keeping agent;

[0021] (3) above-mentioned antistaling agent is added absolute ethanol and is configured into the solution that concentration is 20mg / L, is evenly sprayed on the potato surface according to the consumption of 5kg / L, after air-drying, statistics the germination rate of potato and finds that the antistaling agent of the present embodiment can Reduce the potato germination rate by 52%.

Embodiment 2

[0023] The potato preservation process of the present embodiment is as follows:

[0024] (1) Add 200-mesh silicon dioxide into 40 mL of ethanol and stir at 400 rpm for 30 minutes to prepare a suspension with a concentration of 60 g / L;

[0025] (2) Add 30mL / L amino silicone oil to the above suspension, stir at 400rpm for 30 minutes, dry at 50°C for 3 hours, and grind to 200 mesh to obtain hydrophobic silica, namely potato fresh-keeping agent;

[0026] (3) the above-mentioned antistaling agent plus dehydrated alcohol is configured into a solution with a concentration of 40mg / L, and is evenly sprayed on the potato surface according to the consumption of 7kg / L, and the germination rate of the potato is counted after air-drying and finds that the antistaling agent of the present embodiment can be Reduce the potato germination rate by 59%.

Embodiment 3

[0028] The potato preservation process of the present embodiment is as follows:

[0029] (1) Add 300-mesh silicon dioxide to 70 mL of ethanol and stir at 500 rpm for 50 minutes to prepare a suspension with a concentration of 100 g / L;

[0030] (2) Add 40mL / L amino silicone oil to the above suspension, stir at 500rpm for 50 minutes, dry at 80°C for 5 hours, and grind to 300 mesh to obtain hydrophobic silica, namely potato fresh-keeping agent;

[0031] (3) above-mentioned antistaling agent is added absolute ethanol and is configured into the solution that concentration is 80mg / L, according to the consumption of 10kg / L, evenly sprays on the surface of potato, after air-drying, statistics the germination rate of potato and finds that the antistaling agent of the present embodiment can Reduce potato germination rate by 54%.

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PUM

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Abstract

The invention discloses a nano preservative for potatoes, a preparation method and a use method. The preparation method comprises steps as follows: silicon dioxide is added to ethanol and stirred, anda suspension with concentration being 25-100 g / L is prepared; amino silicone oil is added to the suspension, a mixed solution is stirred, dried and ground to 100-300 meshes, and hydrophobic silicon dioxide, namely, the preservative for the potatoes, is obtained. The amino silicone oil is adopted to modify silicon dioxide, a hydrophobic composite nanomaterial is obtained, the material can endow outer skin of the potatoes with hydrophobic performance and reduce moisture attaching capacity, so that the potatoes are effectively inhibited from sprouting, and content of solanine is reduced. The preparation method of the preservative is simple, the preservative is convenient to store, sprouting rate of the potatoes can be at least reduced by 50% or higher, meanwhile, the use process is simple, and the preservative is just required to be sprayed simply, can be popularized in a large range and facilitates long-term preservation of the potatoes.

Description

technical field [0001] The invention relates to a potato fresh-keeping technology, in particular to a potato nano-preservative, a preparation method and a use method. Background technique [0002] Potato is an important high-yielding crop that is both grain and vegetable in the world. It is the staple food in many countries and plays an important role in maintaining food security. [0003] Potatoes will germinate during storage, which not only reduces the commerciality of potatoes, but also produces a large amount of solanine toxic substances, which seriously endanger human health. Therefore, inhibiting potato germination is a key issue that the potato industry urgently needs to solve. [0004] Existing potato preservation techniques mainly include physical methods (low temperature, irradiation, etc.), biological methods (germination-resistant varieties, bacterial agents, etc.) and chemical methods (plant growth regulators, desiccants, etc.). Although these technologies ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/157
CPCA23B7/157
Inventor 吴正岩张丽红蔡冬清张桂龙
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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