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Drying method of fresh tremella fuciformis

A drying method and technology of fresh white fungus, which is applied in the field of food processing, can solve the problems of poor drying effect of fresh white fungus, affecting appearance and quality, and achieve the effect of retaining taste and nutrition, maintaining appearance and color, and avoiding uneven drying

Pending Publication Date: 2021-12-24
四川工大西南食品研究有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the drying effect of fresh white fungus in the prior art is relatively poor, which affects its appearance and quality. The present invention provides a drying method for fresh white fungus that solves the above problems

Method used

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  • Drying method of fresh tremella fuciformis
  • Drying method of fresh tremella fuciformis
  • Drying method of fresh tremella fuciformis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present invention preferably a kind of drying method of fresh white fungus, comprises the following steps:

[0031] Step 1: raw material pretreatment; select 1 kg of whole fresh white fungus raw material, wherein the fresh white fungus has a water content of 80%, wash the fresh white fungus raw material with water to remove surface impurities, drain and obtain fresh white fungus a, and set aside;

[0032] Step 2: Sectional freezing; put the fresh white fungus a in step 1 on a flat plate, put it into an ultra-low temperature refrigerator for the first stage of pre-freezing, control the temperature in the ultra-low temperature refrigerator to -75°C, and then place the empty box of the freeze-drying box The temperature is lowered to -60°C at a rate of 10°C / min, and the fresh white fungus a that has been frozen after the first stage of pre-freezing is quickly placed on the material rack in the pre-cooled vacuum freeze dryer cavity, and the second step is carried out. Af...

Embodiment 2

[0037] A drying method for fresh white fungus, comprising the following steps:

[0038] Step 1: raw material pretreatment; select 1 kg of whole fresh white fungus raw material, wherein the fresh white fungus has a water content of 75%, wash the fresh white fungus raw material with water to remove surface impurities, drain and obtain fresh white fungus a, and set aside;

[0039] Step 2: Sectional freezing; put the fresh white fungus a in step 1 on a flat plate, put it in an ultra-low temperature refrigerator for the first stage of pre-freezing, control the temperature in the ultra-low temperature refrigerator to -78°C, and then place the empty box of the freeze-drying box The temperature is lowered to -62°C at a rate of 12°C / min, and the fresh white fungus a that has been frozen after the first stage of pre-freezing treatment is quickly placed on the material rack in the pre-cooled vacuum freeze dryer cavity, and the second step is carried out. After two stages of freezing for ...

Embodiment 3

[0044] A drying method for fresh white fungus, comprising the following steps:

[0045]Step 1: raw material pretreatment; select 1 kg of whole fresh white fungus raw material, wherein the fresh white fungus has a water content of 85%, wash the fresh white fungus raw material with water to remove surface impurities, drain and obtain fresh white fungus a, and set aside;

[0046] Step 2: Sectional freezing; lay the fresh white fungus a in step 1 on a flat plate, put it into an ultra-low temperature refrigerator for the first stage of pre-freezing, control the temperature in the ultra-low temperature refrigerator to -80°C, and then place the empty box of the freeze-drying box The temperature is lowered to -65°C at a rate of 15°C / min, and the fresh white fungus a that has been frozen after the first stage of pre-freezing treatment is quickly placed on the material rack in the pre-cooled vacuum freeze dryer cavity, and the second step is carried out. After the second stage of freezi...

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Abstract

The invention discloses a drying method of fresh tremella fuciformis. The drying method is used for solving the problems that the existing fresh tremella fuciformis is poor in drying effect, and the appearance and quality of the fresh tremella fuciformis are affected. The method comprises the following steps: step 1, pretreating raw materials; selecting a whole fresh tremella fuciformis raw material, washing surface impurities of the fresh tremella fuciformis raw material with water, and carrying out draining to obtain fresh tremella fuciformis a for later use; step 2, performing staged freezing; subjecting the fresh tremella fuciformis a in the step 1 to first-stage pre-freezing and then to second-stage freezing, so as to obtain fresh tremella fuciformis b, wherein the second-stage freezing time is set to be 0.5-1.5 h; step 3, carrying out step-by-step drying; vacuumizing the fresh tremella fuciformis b in the second step, then, carrying out sublimation drying till the water content of the tremella fuciformis is smaller than or equal to 12%, and carrying out heating-up for resolved drying, wherein the resolved drying time is set to be 13-15 h; step 4, carrying out packaging; and step 5, carrying out aftertreatment; completing the drying of the fresh tremella fuciformis. The method has the advantages that the appearance, color, taste and nutrient substances of the fresh tremella fuciformis are kept, the quality is stable, and carrying is convenient.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a drying method for fresh white fungus. Background technique [0002] Tremella, also known as white fungus and white fungus, is a traditional medicinal and edible fungus in my country. Tremella is rich in nutrition, rich in colloid, multivitamins, inorganic salts, and amino acids. It is one of the famous "mountain treasures" and is known as "the crown of bacteria". According to research data, every 100 grams of dry white fungus contains 5.0g of protein, 0.6g of fat, 79g of carbohydrate, 2.6g of crude fiber, 3.1g of ash, 380mg of calcium, 250mg of phosphorus, 30.4mg of iron, 0.002mg of thiamine, riboflavin Vitamin 0.14mg, Niacin 1.5mg. [0003] The freshly harvested white fungus is easy to deteriorate due to high moisture content, so it needs to be dried immediately for long-term storage and transportation. Tremella preservation is currently commonly used in the natural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/024
CPCA23B7/024
Inventor 杨晓春谢桂林卢卫红马莺张英春王荣春程翠林丁忠庆黎重阳吴新春孙彪王傲张硕
Owner 四川工大西南食品研究有限责任公司
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