Processing method of lentinan

A processing method and technology of lentinan, which is applied in the field of food processing, can solve the problems of easy corruption and deterioration of the extraction solution, low extraction efficiency, high water polarity, etc., and achieve the effects of shortening the production cycle, high extraction rate, and easy dissolution

Active Publication Date: 2012-11-21
LONGHAI YINGXIN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of extracting Lentinan is hot water extraction. This method does not require special machinery and equipment, and is low in cost and safe. However, the extraction efficiency is often low and time-consuming. However, due to the high polarity of water, it is easy to dissolve glycosides and proteins in water. The components are leached out, so that the extraction solution is easy to spoil when stored, which brings some difficulties to the subsequent separation

Method used

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  • Processing method of lentinan
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Coarse crushing: Place dried shiitake mushrooms in a crusher for coarse crushing at a speed of 2500r / min for 20min.

[0024] (2) Twin-screw extrusion treatment: The raw mushroom powder with a moisture content of 10% is extruded according to the feed rate of 25kg / h, the extrusion temperature of 120°C, and the extruder speed of 100r / min.

[0025] (3) Semi-biomimetic extraction: Weigh the squeezed mushroom powder, add distilled water at a material-to-liquid ratio of 1:20, adjust the pH of the solution to 4.1 with a disodium hydrogen phosphate-citric acid buffer solution, and perform the first extraction. Then, the pH of the solution was adjusted to 8.4 with disodium hydrogen phosphate-citric acid buffer solution for the second extraction, the extraction temperature was 45° C., and the extraction time was 40 minutes.

[0026] (4) Centrifugation and concentration: Centrifuge the material liquid extracted by the semi-biomimetic method with a centrifuge with a rotation speed of 3...

Embodiment 2

[0029] (1) Coarse crushing: Place dried shiitake mushrooms in a crusher for coarse crushing at a speed of 3000r / min for 15min.

[0030] (2) Twin-screw extrusion treatment: The raw mushroom powder with a moisture content of 15% is extruded according to the feed rate of 30kg / h, the extrusion temperature of 125°C, and the extruder speed of 110r / min.

[0031] (3) Semi-biomimetic extraction: Weigh the extruded shiitake mushroom powder, add distilled water at a material-to-liquid ratio of 1:25, adjust the pH of the solution to 4.2 with disodium hydrogen phosphate-citric acid buffer solution, and perform the first extraction. Then, the pH of the solution was adjusted to 8.5 with disodium hydrogen phosphate-citric acid buffer solution for the second extraction, the extraction temperature was 50° C., and the extraction time was 50 minutes.

[0032] (4) Centrifugation and concentration: Centrifuge the material liquid extracted by the semi-biomimetic method with a centrifuge with a rotating spe...

Embodiment 3

[0035] (1) Coarse crushing: Place dried shiitake mushrooms in a crusher for coarse crushing at a speed of 3000r / min for 15min.

[0036] (2) Twin-screw extrusion treatment: The raw mushroom powder with a water content of 20% is extruded according to a feed rate of 25kg / h, an extrusion temperature of 130°C, and an extruder speed of 120r / min.

[0037] (3) Semi-biomimetic extraction: accurately weigh 500g of the squeezed mushroom powder, add distilled water at a material-to-liquid ratio of 1:30, adjust the pH of the solution to 4.3 with disodium hydrogen phosphate-citric acid buffer solution, and perform the first time After extraction, the pH of the solution was adjusted to 8.6 with the disodium hydrogen phosphate-citric acid buffer solution for the second extraction, the extraction temperature was 60°C, and the extraction time was 55 minutes.

[0038] (4) Centrifugation and concentration: Centrifuge the material liquid extracted by the semi-biomimetic method with a centrifuge with a ro...

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Abstract

The invention discloses a processing method of lentinan. The processing method includes the steps of firstly, coarsely grinding; secondly, twin-screw extruding; thirdly, semi-bionic extracting; fourthly, centrifugalizing and concentrating; and fifthly, ethanol precipitating and drying. Since an ultrasonic method is cooperated with the semi-bionic method to extract the lentinan, more effective components can be extracted and reserved, production cycle can be shortened, and cost can be lowered.

Description

Technical field [0001] The invention belongs to the field of food processing, and relates to a processing method of lentinan, in particular to a processing method for extracting lentinan from an extrusion process and a semi-biomimetic method. Background technique [0002] Shiitake mushroom is the second largest edible fungus in the world and one of our country's specialties. It is known as a "mountain treasure" among the folks and is a nutritious and health food with high protein and low fat. Shiitake mushrooms, also known as shiitake mushrooms and winter mushrooms, are fungi that grow on wood. Because of its delicious taste, refreshing aroma, and rich nutrition, it not only ranks above straw mushrooms, oyster mushrooms, and white mushrooms, but is also known as the "Queen of Plants". The edible part of dried shiitake mushrooms accounts for 72%. Each 100g edible part contains 13g water, 1.8g fat, 54g carbohydrates, crude fiber 7.8g, ash 4.9g, calcium 124mg, phosphorus 415mg, iro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00A23L1/09
Inventor 黄建实
Owner LONGHAI YINGXIN AGRI TECH
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