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Fresh-keeping storage method of sweet potatoes

A technology of sweet potato and grass curtains, which is applied in the fields of fruit and vegetable preservation, food preservation, and protection of fruits/vegetables with a coating protective layer. Corrosion phenomenon, simple storage environment, increase the effect of fresh-keeping time

Pending Publication Date: 2020-04-10
TIANJIN FENGHUA YULONG AGRI DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sweet potatoes, jicama, and purple potatoes are concentrated in the market season, resulting in oversupply and low prices, making it difficult to achieve a good harvest. Moreover, sweet potatoes, purple potatoes, and jicama have high moisture content, and their skins are thin and crisp. They are easily damaged by mechanical damage during harvesting, causing microbial erosion It is rotten and deteriorated, and is sensitive to temperature. Storage at low temperature is prone to chilling injury, surface depression, water stains, mildew and rot. Sweet potatoes are also prone to hard core and bitterness during cooking. The browning of jicama pulp is serious, and the breathing intensity is high at high temperatures. The water evaporates quickly, causing dehydration and shriveling, which affects the commerciality
Sweet potatoes will be infected by microorganisms during storage, such as: black spot, soft rot, dry rot, etc., causing a lot of economic losses. At present, sweet potatoes and jicama are mainly stored in traditional storage methods, which are less affected by external temperature and management. Large, the loss caused by improper storage can reach more than 15% every year, causing huge losses to farmers and enterprises, and there is no systematic method for the cold storage and fresh-keeping technology of sweet potatoes and jicama

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of sweet potato fresh-keeping storage method, its steps are:

[0033] (1) Screening of sweet potatoes: select fresh sweet potatoes with less soil on the surface, no insect holes, no damage, and no deterioration; after the primary selection of sweet potatoes is completed, classify them according to the size and specifications of sweet potatoes, so that they can be stored separately;

[0034] (2) Sweet potato treatment: soak the sweet potatoes to be stored in a 500-fold diluted solution of thiophanate-methyl for 3 minutes, take them out and place them in a ventilated and dry place to dry for 2 days, dry the sweet potatoes to make them unsightly, and then spend the night outside in the open air;

[0035] (3) Straw curtains and plant ash to dry: put the straw curtain and plant ash in the sun to dry for 3 days;

[0036] (4) sweet potato storage: the straw curtain after step (3) is air-dried is placed in the wooden case, and indoor ventilation, natural air, natural hum...

Embodiment 2

[0039] A kind of sweet potato fresh-keeping storage method, its steps are:

[0040] (1) Screening of sweet potatoes: select fresh sweet potatoes with less soil on the surface, no insect holes, no damage, and no deterioration; after the primary selection of sweet potatoes is completed, classify them according to the size and specifications of sweet potatoes, so that they can be stored separately;

[0041] (2) Treatment of sweet potatoes: soak the sweet potatoes to be stored in a 500-fold diluted solution of thiophanate-methyl for 5 minutes, take them out and place them in a ventilated and dry place to dry for 3 days, dry the sweet potatoes to make them unsightly, and then spend the night outside in the open air;

[0042] (3) Straw curtains and plant ash to dry: put the straw curtain and plant ash in the sun to dry for 2 days;

[0043] (4) sweet potato storage: put the grass curtain after step (3) drying against the wall, indoor ventilation, natural air, natural humidity, put th...

Embodiment 3

[0046] A kind of sweet potato fresh-keeping storage method, its steps are:

[0047] (1) Screening of sweet potatoes: select fresh sweet potatoes with less soil on the surface, no insect holes, no damage, and no deterioration; after the primary selection of sweet potatoes is completed, classify them according to the size and specifications of sweet potatoes, so that they can be stored separately;

[0048] (2) Treatment of sweet potatoes: soak the sweet potatoes to be stored in a 500-fold diluted solution of thiophanate-methyl for 4 minutes, take them out and place them in a ventilated and dry place to dry for 2.5 days, dry the sweet potatoes to make them unsightly, and then spend the night outside in the open air;

[0049] (3) Straw curtains and plant ash to dry: put the straw curtain and plant ash in the sun to dry for 2.5 days;

[0050] (4) sweet potato storage: put the grass curtain after step (3) drying against the wall, indoor ventilation, natural air, natural humidity, pu...

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PUM

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Abstract

The invention discloses a fresh-keeping storage method of sweet potatoes. The method comprises the following steps: (1) screening sweet potatoes; (2) performing sweet potato treatment; (4) storing thesweet potatoes; (5) performing storage observation. According to the method, the sweet potatoes are treated by adopting the high-power diluted preservative, so that the preservation time is prolonged, and the disease and rot phenomena are avoided in the storage period; the storage environment of the sweet potatoes is simple, ventilation and drying of the storage environment are emphasized, the storage cost is reduced, and meanwhile, the storage quality and time of the sweet potatoes are qualitatively improved.

Description

technical field [0001] The invention relates to the technical field of sweet potato storage, in particular to a fresh-keeping storage method for sweet potatoes. Background technique [0002] Sweet potato is an important food crop, second only to rice, wheat, and corn. It has a large planting area and a wide range in my country, and its annual output ranks first in the world. Purple sweet potato is rich in anthocyanins and has high nutritional value. It can be used as a raw material for health food , the planting of jicama is resistant to drought and barrenness, and the annual output can reach more than 5000kg. It can be eaten raw or cooked as fruit, and is loved by people. The planting area has been continuously expanding in recent years. Sweet potatoes, jicama, and purple potatoes are concentrated in the market season, resulting in oversupply and low prices, making it difficult to achieve a good harvest. Moreover, sweet potatoes, purple potatoes, and jicama have high moistur...

Claims

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Application Information

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IPC IPC(8): A23B7/154A23B7/153A23B7/16
CPCA23B7/154A23B7/153A23B7/16Y02A40/90
Inventor 王立国
Owner TIANJIN FENGHUA YULONG AGRI DEV CO LTD