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Method for keeping freshness of bamboo shoot with sheaths

A fresh-keeping method and a technology for raw bamboo shoots, which are applied to the preservation of fruits/vegetables with sugar, preservation of fruits/vegetables by radiation/electrical treatment, etc., can solve the problem of not developing ozone, etc., and achieve the effect of good taste

Inactive Publication Date: 2005-04-06
国家林业局竹子研究开发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plasma already exists in China (O 3 ) sterilizers (some called ozone generators, sterilizers), began to be used for medical sterilization, tap water disinfection and fresh-keeping apple tests, etc., but there is no report on the development of ozone for bamboo shoot preservation in China

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Remove the soil, diseased and insect shoots, and disabled shoots from the bamboo shoots excavated on March 20, and wash them with clean water;

[0035] (2) Put 10KG of fresh bamboo shoots with the tip upwards into a PE barrel (food grade), add 20KG of water until the tip of the bamboo shoot is 1.5cm below the leaves; power on the plasma sterilizer, and sterilize with ozone for 25 minutes. O in water 3 The concentration is 5mg / m 3 ; Soak for about 1 hour, take out the bamboo shoots, with the tip of the bamboo shoots up, and put them into another PE bucket;

[0036](3) Pour the aqueous solution of natural fresh-keeping liquid tea polyphenols into the PE barrel with sterilized bamboo shoots in step (2) with the aqueous solution of white sugar, and immerse the bamboo shoot base 2.5cm; wherein the soaking liquid contains 0.06wt% tea polyphenols Phenol and 1.7wt% white sugar;

[0037] (4) Let the ozone flow for another 2-3 minutes; cover the inner cover, and open 2-3 s...

Embodiment 2

[0042] (1) 3KG of high-section bamboo shoots excavated on April 25 were removed from soil, diseased and insect shoots, and disabled shoots, and washed with clear water;

[0043] (2) Put 3KG of fresh bamboo shoots with the tip upwards into a PE bucket (food grade), add 10KG of water until the leaflets of the bamboo shoots are below 2cm; power on the plasma sterilizer, sterilize with ozone for 10 minutes, and put O 3 The concentration is 3mg / m 3 ; Soak for about 1 hour, take out the bamboo shoots, with the tip of the bamboo shoots up, and put them into another PE bucket;

[0044] (3) Pour the aqueous solution of natural fresh-keeping liquid tea polyphenols into the PE bucket with sterilized bamboo shoots in step (2) with the aqueous solution of white sugar, and immerse the bamboo shoot base by 2-3cm; wherein the soaking solution contains 0.1wt% tea polyphenols and 3wt% white sugar;

[0045] (4) Let the ozone flow for another 2-3 minutes; cover the inner cover, and open 2-3 sma...

Embodiment 3

[0049] (1) 15kg of bamboo shoots with sheaths dug on the same day, after removing the soil and diseased insect shoots, put the bamboo shoots with a length difference of no more than 1-2cm into a PE bucket, with the tips of the bamboo shoots facing up, add water to soak the bamboo shoots until the shoots are small Leaves below 1cm, power on the plasma sterilizer, and sterilize with ozone for 25 minutes (O in water 3 The concentration is 5mg / m 3 Below), after sterilization, fish out the bamboo shoots and transfer them to another PE bucket;

[0050] (2) Pour the aqueous solution of natural fresh-keeping liquid tea polyphenols into the PE bucket with sterilized bamboo shoots in step (1) and soak for 1 hour, wherein the soaking solution contains 0.1wt% tea polyphenols and 3wt% white sugar;

[0051] (3) The bamboo shoots pulled out are put into a plastic basket lined with PE film, and each bamboo shoot is covered with PE film to keep moisture, but 3-8 air holes with a diameter of ...

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PUM

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Abstract

The present invention relates to preservation technology, and is especially the method of keeping freshness of bamboo shoot with sheaths. Bamboo shoot is preserved through sterilizing with negative mist and ozone inside a container with plasma sterilizer, spraying bacteria-free water to maintain humidity, maintaining nutrients and color with natural freshness keeping agent and sugar solution, cold storage to lower breath strength and other measures. The cold storage temperature is 1-5 deg.c, preferably 1-2 deg.c, and it may be maintained for 2 months. The present invention makes it possible to raise the value of bamboo shoot greatly and regulate the marketing seasons of bamboo shoot.

Description

technical field [0001] The invention belongs to the fresh-keeping technology of fruits and vegetables, in particular to a fresh-keeping method for raw bamboo shoots with sheaths (shells). Background technique [0002] Preservation of raw bamboo shoots with sheaths is a difficult problem. On the premise of preservation, factors such as lignification and mildew must be controlled at the same time. Since the 1980s, the country has organized scientific research departments to study, but there has been no better solution. [0003] In recent years, many provinces and regions have been highly motivated to develop bamboo forest production, and the output of bamboo shoots has increased rapidly. For example, Fujian Province has an annual output of 800,000 tons of bamboo shoots; Zhejiang Province produces 650,000 tons of fresh bamboo shoots. 10,000 mu increased to 200,000 mu in 2001, with an annual output of 80,000 tons of fresh bamboo shoots and a bamboo shoot inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/015A23B7/08
Inventor 王树东石全太尤匡银
Owner 国家林业局竹子研究开发中心
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