CN104824124A

CN104824124A - Sweet potato fresh-keeping method

Info

Publication number: CN104824124A
Application number: CN201510187029.XA
Authority: CN
Inventors: 唐兴龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-04-20
Filing date: 2015-04-20
Publication date: 2015-08-12

Abstract

The invention belongs to the field of sweet potato fresh keeping, and specifically relates to a sweet potato fresh-keeping method. The sweet potato fresh-keeping method comprises following steps: sweet potato is selected, wherein the peel of the selected sweet potato is complete, and the selected sweet potato is not infected by diseases; the selected sweet potato is immersed in a salt solution, is coated with a layer of orange peel squeezed juice, and then is coated with a layer of mutton fat; after condensation, the sweet potato is coated with a layer of absorbent paper, and is stored at shady and cool ventilated places in layers, wherein each two layers of the sweet potato are separated by a layer of a mixture of wet sand and cobble. The sweet potato fresh-keeping method is harmless and nontoxic, and is convenient; fresh keeping time is long; the sweet potato is sterilized with the salt solution, and is coated with the layer of the fresh orange peel squeezed juice, so that sweet potato peel oxidation is inhibited, and antibacterial effects are achieved; the sweet potato is coated with a layer of mutton fat, so that water retain effect and fresh keeping effect are achieved, and sweet potato rot caused by outside microorganism invasion is avoided; goaty flavour of mutton fat can be eliminated by radix angelicae, and at the same time antibacterial effect is achieved.

Description

A kind of Ipomoea batatas preservation method

Technical field

The present invention relates to the fresh-keeping field of Ipomoea batatas, specifically a kind of Ipomoea batatas preservation method.

Background technology

Sweet potato is also known as Ipomoea batatas, sweet potato, red tongue, sweet potato, pachyrhizus.Why it claims sweet potato, be on the whole because it be " thing from abroad " therefore.Pass on from one to another sweet potato to be cultivated by American Indian the earliest, imported Philippine into afterwards, and be considered as treasure by local ruler, and forbade unofficial biography, offender will be sentenced to death.During 16th century, have two to manage some sweet potato rattan plaiteds to enter in bamboo basket and hawser the Chinese of Philippine's trade, practise deception, transported native place, Fujian back, plantation is then held back and China's the earth.For these years, easily plant due to these thing from abroad and be easy to get, price is cheap, and people have faded from memory it gradually in the preciousness of foreign country and the risk of introducing a fine variety, and only treat as coarse food grain and feed.In fact, sweet potato has high nutritive value.Be described as life prolonging food in Japan, there is again good medicinal efficacy simultaneously.Ipomoea batatas is one of main cereal crops of China, containing anti-cancer materials such as carrotene, vitamin, lysines in Ipomoea batatas, has very high nutritive value and medical value.The harvest season of Ipomoea batatas is autumn, and the preservation of Ipomoea batatas is a more difficult problem, and general Ipomoea batatas is placed in the too high place of temperature and can sprouts again; Be placed in the place of humid, easily cause germ encroach on and rot; Be placed in the too low place of temperature easily to endure cold again, form hard-core; Ipomoea batatas under normal temperature also can only preserve about 30-40 days.

Summary of the invention

The present invention, according to the deficiencies in the prior art, provides a kind of Ipomoea batatas preservation method.

A kind of Ipomoea batatas preservation method, it comprises the steps:

Choose epidermis complete, disease-free Ipomoea batatas, put into concentration be 25% salt solution soak 1-2 hour after, dry;

Get new fresh orange peel to squeeze the juice, squeezeding juice is coated on the epidermis of Ipomoea batatas;

Angelica extract and sheep oil mixs by the ratio of 10:30 is fluid shape, is immersed in by Ipomoea batatas in mixed oil liquid, makes the surface of Ipomoea batatas wrap one deck mixed oil liquid, after Ipomoea batatas taking-up, coldly under being placed on the environment of 2-4 DEG C puts 5-10 minute;

At outer layer covers one deck blotting paper of Ipomoea batatas, two ends wrapping sealing;

By Ipomoea batatas layered putting at shady and cool ventilation place, between every layer of Ipomoea batatas, paving spills the wet sand and stone that a layer thickness is 5-8cm;

Wet husky water content is 8%-10%, and wet sand uses after high temperature sterilization with stone, and the particle diameter of described sand is greater than 1mm, and the particle diameter of stone is 2-4cm;

Preservation method of the present invention has nonhazardous, convenient, the advantages such as fresh keeping time is long, Ipomoea batatas is after salt solution sterilization, at the juice that its surface new fresh orange peel of coating one deck squeezes, it can suppress sweet potato skin oxidized, and there is antibacterial effect, the exocuticle of Ipomoea batatas wraps up one deck sheep oil, can play and make Ipomoea batatas water conservation, fresh-keeping effect, and cause Ipomoea batatas to be festered after can preventing external microbe from invading, the root of Dahurain angelica can in and the smell of mutton of sheep oil, also play antibacterial effect simultaneously, one deck blotting paper is wrapped up in the outside of Ipomoea batatas, and stack on wet sand, Ipomoea batatas can be kept to be in the environment of certain humidity, the water content of Ipomoea batatas is kept within the specific limits, the wet husky space mixed with stone can discharge the heat produced when Ipomoea batatas breathes, reduce bacterial growth.

Detailed description of the invention

Choose epidermis complete, disease-free Ipomoea batatas, put into concentration be 25% salt solution soak after 1 hour, dry;

Angelica extract and sheep oil mixs by the ratio of 10:30 is fluid shape, is immersed in by Ipomoea batatas in mixed oil liquid, makes the surface of Ipomoea batatas wrap one deck mixed oil liquid, after Ipomoea batatas taking-up, coldly under being placed on the environment of 3 DEG C puts 8 minutes;

By Ipomoea batatas layered putting at shady and cool ventilation place, between every layer of Ipomoea batatas, paving spills the wet sand and stone that a layer thickness is 6cm;

Wet husky water content is 8%, and wet sand uses after high temperature sterilization with stone, and the particle diameter of described sand is greater than 1mm, and the particle diameter of stone is 2-4cm;

Prove through test, the Ipomoea batatas after process of the present invention, can preserve more than 6 months, Ipomoea batatas epidermis after preservation is fresh and tender, outward appearance and the basic indifference of new fresh sweet potatoes, when the holding time is in 3 months in Ipomoea batatas water loss lower than Ipomoea batatas water loss within 8%, 3-6 month lower than 10%.

Claims

1. an Ipomoea batatas preservation method, is characterized in that, it comprises the steps:

A, to choose epidermis complete, disease-free Ipomoea batatas, put into concentration be 25% salt solution soak 1-2 hour after, dry;

B, get new fresh orange peel and squeeze the juice, squeezeding juice is coated on the epidermis of Ipomoea batatas;

C, angelica extract and sheep oil mixs by the ratio of 10:30 be fluid shape, is immersed in by Ipomoea batatas in mixed oil liquid, makes the surface of Ipomoea batatas wrap one deck mixed oil liquid, after Ipomoea batatas taking-up, coldly under being placed on the environment of 2-4 DEG C put 5-10 minute;

E, outer layer covers one deck blotting paper in Ipomoea batatas, two ends wrapping sealing;

F, by Ipomoea batatas layered putting at shady and cool ventilation place, between every layer of Ipomoea batatas paving spill the wet sand and stone that a layer thickness is 5-8cm;

G, wet husky water content are 8%-10%, and wet sand uses after high temperature sterilization with stone, and the particle diameter of described sand is greater than 1mm, and the particle diameter of stone is 2-4cm.