Storage method for sweet potato fresh keeping

A sweet potato and charcoal technology, applied in the preservation of food ingredients as anti-microbial, protection of fruits/vegetables with a protective layer, food science, etc. To solve the above problems, to achieve the effect of high food safety performance, cost and environmental protection, and simplified storage procedures

Inactive Publication Date: 2018-03-20
GUANGXI JIPENG INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it is extremely difficult to store sweet potatoes for a long time (more than 3 months) under the current experience and technical conditions, the annual edible period of fresh sweet potatoes is less than four months, which seriously inhibits the consumption of sweet potatoes and the enthusiasm of potato farmers to plant sweet potatoes. The output has stagnated in recent decades (about 100 million tons per year)
[0012] In order to improve the storage problem of sweet potatoes, people have developed some sweet potato preservatives, but the existing sweet potato preservatives all use pesticide fungicides as main components, and pesticide fungicides have certain toxicity, and residues on sweet potatoes will affect human health; and Sweet potato pathogens are prone to resistance to pesticides and fungicides, and their fresh-keeping effect is not good

Method used

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  • Storage method for sweet potato fresh keeping

Examples

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Effect test

Embodiment 1

[0042] A storage method for sweet potato preservation, comprising the following steps:

[0043] (1) Screening of sweet potatoes: select fresh sweet potatoes with little soil on the surface, no insect holes, no damage, and no deterioration;

[0044] (2) Drying the sweet potatoes: place the sweet potatoes in step (1) in a ventilated and dry place to dry for 4 days; during the drying of the sweet potatoes, the daily sunlight exposure time does not exceed 2 hours;

[0045] (3) Plant ash to dry: place the plant ash in the sun to dry for 2 days;

[0046] (4) Mixing plant ash and sweet potato: coat the surface of the dried sweet potato in step (2) with a layer of dry plant ash from step (3);

[0047] (5) Storage: Put the sweet potatoes and charcoal or bamboo charcoal in step (4) at 20°C, and store them together under indoor ventilation, natural humidity, and natural air components; the 100kg of sweet potatoes should be equipped with at least 6kg of charcoal or bamboo charcoal, potatoe...

Embodiment 2

[0049] A storage method for sweet potato preservation, comprising the following steps:

[0050] (1) Screening of sweet potatoes: select fresh sweet potatoes with little soil on the surface, no insect holes, no damage, and no deterioration;

[0051] (2) Drying the sweet potatoes: place the sweet potatoes in step (1) in a ventilated and dry place to dry for 6 days; during the drying process of the sweet potatoes, the daily sunlight exposure time does not exceed 2 hours;

[0052] (3) Plant ash to dry: place the plant ash in the sun to dry for 4 days;

[0053] (4) Mixing plant ash and sweet potato: coat the surface of the dried sweet potato in step (2) with a layer of dry plant ash from step (3);

[0054] (5) Storage: Put the sweet potato and charcoal or bamboo charcoal in step (4) at 25°C, and store them together under indoor ventilation, natural humidity, and natural air components; the 100kg sweet potato should be equipped with at least 6kg of charcoal or bamboo charcoal, pota...

Embodiment 3

[0056] A storage method for sweet potato preservation, comprising the following steps:

[0057] (1) Screening of sweet potatoes: select fresh sweet potatoes with little soil on the surface, no insect holes, no damage, and no deterioration;

[0058] (2) Drying of sweet potatoes: place the sweet potatoes in step (1) in a ventilated and dry place to dry for 5 days; during the drying of the sweet potatoes, the daily sunlight exposure time shall not exceed 2 hours;

[0059] (3) Plant ash drying: place the plant ash in the sun to dry for 3 days;

[0060] (4) Mixing plant ash and sweet potato: coat the surface of the dried sweet potato in step (2) with a layer of dry plant ash from step (3);

[0061] (5) Storage: Put the sweet potato and charcoal or bamboo charcoal in step (4) at 23°C, and store them together under indoor ventilation, natural humidity, and natural air components; the 100kg sweet potato should be equipped with at least 6kg of charcoal or bamboo charcoal, potato, char...

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Abstract

The invention relates to a storage method for sweet potato fresh keeping. The method comprises the steps of sweet potato screening, sweet potato airing, plant ash airing, and mixing and storage of plant ash and sweet potatoes. The storage process of the invention does not need any chemical sterilization disinfectant or preservative, does not need investment of special shed cellars and thermoregulation and humidifying facilities, saves resources, has low costs, is environment-friendly, has no decay phenomenon in storage time, has long sweet potato storage time of up to 12 months or above. The obtained sweet potatoes basically have no difference from fresh sweet potatoes in color, mouth feel and nutrient aspect, and maintain the primary color and original taste of sweet potatoes. The storagemethod has advantages of simple operation, good fresh-keeping effect, long preservation time, low costs, has no harm to the human body, and high edible safety performance. The method can reduce the loss of sweet potato farmers and avoid pollution to environment, can enlarge population who eat sweet potatoes, increase consumption quantity, increase sweet potato value, increase the income of the sweet potato farmers and generate large social benefits, facilitates grain storage for people, and also makes greatly contribution for alleviating potential grain strategy safety in China.

Description

technical field [0001] The invention belongs to the technical field of sweet potato storage, and in particular relates to a fresh-keeping storage method for sweet potatoes. Background technique [0002] Sweet potato is also called white potato, sweet potato, sweet potato, sweet potato, sweet potato and other names. It was introduced into my country during the Wanli period of the Ming Dynasty and has a history of more than 400 years. Ipomoea batatas is one of four major food crops (rice, wheat, sweet potato, corn) in my country, and all provinces in China are planted, and annual output is more than 100 million tons. Because it is a dryland crop and has low requirements on the planting environment and planting management, it forms a complementary strategic planting supply situation with other major food crops in terms of arable land, water sources, and food. Sweet potatoes are harvested from tubers and have the following advantages: A. Sweet potatoes are dryland crops, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/16
CPCA23B7/16A23V2002/00A23V2200/10
Inventor 杜超杰李斌顾鹏威
Owner GUANGXI JIPENG INVESTMENT CO LTD
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