Coating agent for refreshing bamboo shoots and method for refreshing bamboo shoots with shells

A technology of coating agent and bamboo shoots, which is applied in the fields of preservation of fruits and vegetables, protection of fruits/vegetables with a coating protective layer, food preservation, etc. It can solve the technical problems of bamboo shoots with shells that have not been solved, the breathing intensity is high, and the breathing intensity is reduced. , to achieve good practical value and application prospects, the reduction of total sugar content is small, and the effect of reducing the loss of nutrients

Inactive Publication Date: 2010-06-16
FUJIAN XINRIXIAN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (5) Preservation of cooked bamboo shoots in clear water: After fresh bamboo shoots are cooked at high temperature, the microorganisms on the bamboo shoots are killed, and the enzyme activity is terminated, and then they are stored in flowing stream water; (6) Preservation of cooked bamboo shoots with salt: Pickling cooked bamboo shoots with salt creates a high osmotic pressure environment around the bamboo shoots, thereby inhibiting microbial activity and terminating enzyme activity. declined
[0007] Although there are many studies on the preservation of shelled bamboo shoots, and the fresh-keeping methods of shelled bamboo shoots can more or less prolong the fresh-keeping period of bamboo shoots, there are not many studies on the preservation of shelled bamboo shoots, because the shells of shelled bamboo shoots are tight. Tightly wrapped on the surface of the bamboo shoots, the breathing intensity is high, and it is easy to lose water and age rapidly. Therefore, the fresh-keeping treatment of bamboo shoots with shells is mainly on the premise of keeping fresh, and at the same time, the lignification and mildew of the bamboo shoots must be controlled. Since the 1980s, the state has organized scientific research departments to study the fresh-keeping methods of bamboo shoots with shells, but the technical problems of fresh-keeping bamboo shoots with she

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Preparation of composite coating agent

[0049] Dissolve 0.01 g of iso-Vc in 100 mL of distilled water, then add 0.01 g of konjac glucosan and 0.005 g of chitosan, stir to make them fully dissolved, and mix evenly to prepare a composite coating agent.

[0050] 2. Clean fresh bamboo shoots

[0051] Put fresh winter bamboo shoots with shells without insect spots and damage in a high-pressure spray machine (Jiangsu Kewei Machinery Co., Ltd., model: YXJ), and wash them under an absolute pressure of 0.5 MPa to remove the dirt and the surface of the shells of the bamboo shoots. Dirt

[0052] 3. Dry bamboo shoots

[0053] Send the cleaned bamboo shoots into a tunnel dryer (Dongtang Hengfeng Packaging Machinery Factory, Tianhe District, Guangzhou, Model: 800 / 100), and the bamboo shoots are drying at a temperature of 40°C and a wind speed of 90 m / s. Under the condition that the conveying speed in the machine is 12 m / min, the moisture on the surface of the bamboo shoots will be dried;...

Embodiment 2

[0069] 1. Preparation of composite coating agent

[0070] Dissolve 0.015 g of iso-Vc in 100 mL of distilled water, then add 0.02 g of konjac glucosan and 0.008 g of chitosan, stir to make them fully dissolved, and mix uniformly to prepare a composite coating agent.

[0071] 2. Clean fresh bamboo shoots

[0072] Put fresh winter bamboo shoots with shells without insect spots and damage in a high-pressure spray machine and wash them at an absolute pressure of 0.6 MPa to remove the dirt and dirt on the surface of the shells of the bamboo shoots;

[0073] 3. Dry bamboo shoots

[0074] Send the cleaned bamboo shoots into a tunnel dryer. At a temperature of 45°C, a wind speed of 100 m / s, and the conveying speed of the bamboo shoots in the dryer is 9 m / min, the bamboo shoots are dried on the surface. Moisture

[0075] 4. Coating treatment

[0076] Immerse the dried bamboo shoots with water on the surface into the composite coating agent, soak for 15 seconds and then take it out, dry the water o...

Embodiment 3

[0083] 1. Preparation of composite coating agent

[0084] Dissolve 0.005 g of iso-Vc in 100 mL of distilled water, then add 0.1 g of konjac glucosan and 0.01 g of chitosan, stir to make them fully dissolved, and mix evenly to prepare a composite coating agent.

[0085] 2. Clean fresh bamboo shoots

[0086] Put fresh winter bamboo shoots with shells without insect spots and damage in a high-pressure spray machine and wash them at an absolute pressure of 0.8 MPa to remove dirt and dirt on the surface of the shells of the bamboo shoots;

[0087] 3. Dry bamboo shoots

[0088] Send the cleaned bamboo shoots into a tunnel dryer. At a temperature of 42°C, a wind speed of 100 m / s, and the conveying speed of the bamboo shoots in the dryer at 10 m / min, dry the surface of the bamboo shoots. Moisture

[0089] 4. Coating treatment

[0090] Immerse the dried bamboo shoots whose surface moisture has been blown off into the composite coating agent, soak for 60 seconds and then take them out, dry the moi...

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PUM

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Abstract

The invention discloses a coating agent for refreshing bamboo shoots and a method for refreshing the bamboo shoots with shells. The coating agent for refreshing the bamboo shoots comprises chitosan, konjac glucomannan and iso-vitamin C. The method for refreshing the bamboo shoots with the shells comprises the steps of coating, cooling and refrigerating the bamboo shoots with the shells sequentially. The preservative bamboo shoots prepared by the method has the advantages of high whiteness and moisture content, little increment of crude fiber content, little reduction in the content of total sugar and vitamin C and little loss of nutrient substances in the bamboo shoots. The method effectively retards the ageing speed of the bamboo shoots and obviously prevents brown stain, dehydration, ageing and mildew.

Description

Technical field [0001] The invention relates to a fresh-keeping agent and a fresh-keeping method for the preservation and preservation of vegetables, in particular to a bamboo shoot fresh-keeping film agent and a bamboo shoot fresh-keeping method. Background technique [0002] Bamboo shoots are a traditional food in my country, with high protein, low fat, Se and other trace elements and rich dietary fiber, and are known as "health food". Bamboo shoots contain 18 kinds of amino acids, some of which are necessary for the human body. The total amount of amino acids in 100g of fresh bamboo shoots is about 2g. Bamboo shoots also contain many trace elements necessary for the human body, such as Se and Ge. Bamboo shoots are sweet, slightly cold, non-toxic, and have the effects of quenching thirst, diuresis, clearing lungs, and reducing phlegm. The cellulose contained in bamboo shoots can promote the peristalsis of the intestinal wall, increase the secretion of the digestive glands, fac...

Claims

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Application Information

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IPC IPC(8): A23B7/16A23B7/055
Inventor 林作光
Owner FUJIAN XINRIXIAN GRP
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