Preparation method of pholiota nameko insoluble dietary fiber

A technology of soluble dietary fiber and slippery mushroom, which is applied in the field of preparation of slippery mushroom insoluble dietary fiber, can solve the problems affecting the utilization rate of slippery mushroom, environmental pollution, etc., achieve the effect of pure white color, simple preparation method and improved utilization rate

Inactive Publication Date: 2015-04-01
TIANJIN UNIV OF COMMERCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, most of the residues after extracting polysaccharides are discarded, which affects the utilization rate of slide mushrooms and causes environmental pollution.

Method used

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  • Preparation method of pholiota nameko insoluble dietary fiber
  • Preparation method of pholiota nameko insoluble dietary fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A. Collection of slide mushroom residues:

[0034] (1) Weigh 100g of dried slippery mushroom, add 2000ml of water, let stand for 12 hours, extract in 80°C water bath for 3 hours, and beat. Add 40000U of cellulase and incubate at 55°C for 2 hours; then raise the temperature to 80°C for extraction for 3 hours.

[0035] (2) Filtrate to obtain 1600ml of the first extract. Then add 2000ml of water to the filter residue and extract under ultrasonic waves for 30 minutes at 400W intermittently for 1s, and obtain 1900ml of the second extraction solution by filtration; wash the residue of the second filtration twice, each time adding half the amount of water in the previous one, and obtain the third extraction by filtration. Secondary extract 1500ml. Collect the filtered residue for later use.

[0036] (3) Combine all filtrates three times. The combined extracts were concentrated under reduced pressure to 1600ml. 5000ml of absolute ethanol was added to the supernatant to pre...

Embodiment 2

[0068] A. Collection of slide mushroom residues:

[0069] (1) Weigh 100g of dried slippery mushroom, add 2000ml of water, let stand for 12 hours, extract in 80°C water bath for 3 hours, and beat. Add 40000U of cellulase and incubate at 55°C for 2 hours; then raise the temperature to 80°C for extraction for 3 hours.

[0070] (2) Filtrate to obtain 1600ml of the first extract; then add 2000ml of water to the filter residue and extract under ultrasonic wave at 400W for 1 second for 30 minutes, then filter to obtain 1900ml of the second extract; wash the residue of the second filter twice, each Use the first half of the amount of water added each time, and filter to obtain 1500ml of the third extract.

[0071] (3) All the filtrates were combined three times; the combined extract was concentrated to 1600ml under reduced pressure. 5000ml of absolute ethanol was added to the supernatant to precipitate the primary extract of pleurotus polysaccharide, which was allowed to stand overn...

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Abstract

The invention discloses a preparation method of pholiota nameko insoluble dietary fiber and provides a method for preparing insoluble dietary fiber by utilizing remaining residue of pholiota nameko after polysaccharides are extracted. The preparation method mainly comprises the following steps of: washing and drying the residue; crushing, sieving and adding water for swelling; removing protein by using a method of compounding trypsin or neutral protease and bromelain; removing protein by washing; bleaching; removing residual hydrogen peroxide; removing salt by acid treatment; washing the residue; drying, crushing and sieving to obtain the pholiota nameko insoluble dietary fiber. The preparation method of pholiota nameko insoluble dietary fiber provided by the invention can be used for preparing the pholiota nameko insoluble dietary fiber by utilizing the residue of the pholiota nameko after the polysaccharides are extracted, thus changing wastes into valuables, saving resources, improving the utilization rate of the pholiota nameko, and providing a new way for the development and utilization of pholiota nameko products. Moreover, the preparation method adopts natural raw materials, thus being in line with the requirements for green foods. The obtained insoluble dietary fiber is high in content which is above 95%, pure white or light yellow in color and luster, and easy to add into other foods.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a preparation method of oyster mushroom insoluble dietary fiber. Background technique [0002] Slide mushroom (Pholiota nameko), also known as pearl mushroom, slide mushroom, Basidiomycetes, Scattered mushrooms, Capletaceae, Phosphorus genus. Slippery mushroom is named for the mucus on the surface of the cap. Slippery mushroom has a delicious taste and high nutritional value, and enjoys a high reputation in the world. At present, slide mushroom is mainly used as food material and extract slide mushroom polysaccharide. [0003] After extracting the polysaccharides from fresh Pleurotus ostreatus, there are many residues left, and the residues are mainly dietary fiber. Dietary fiber, as a nutrient element, supplements the daily necessities of the human body and the lack of dietary fiber due to changes in dietary structure. Dietary fiber also has the effects of anti-tumor, improving...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/308
Inventor 李海平
Owner TIANJIN UNIV OF COMMERCE
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