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Method for extracting crust element, fats and albumen powder from shrimp and crab

A technology of chitin and protein powder, which is applied in the fields of fat, chitin extraction and protein powder, can solve the problems of wasting protein and fat resources, environmental pollution, etc., achieve comprehensive utilization rate improvement, solve production process pollution, and comprehensive pollution index Falling effect

Inactive Publication Date: 2010-10-13
QINGDAO BETTER BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing techniques for extracting chitin use the "two acids and one base" method. While extracting chitin, a large amount of fat and protein are destroyed and then discharged with waste water, which not only wastes valuable protein and fat resources, but also causes severe environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Mix 30 tons of fresh shrimp with water in a ratio of 1:1, then add it to the steamed reactor, heat it to 100°C and keep it for 20-30 minutes to ensure that it is cooked to a certain degree, then pour cold water into the jacket of the reactor to cool down to At 45-49°C, add 0.06 tons of compound enzyme composed of collagenase and subtilisin at a ratio of 1:10, keep the temperature at 45-50°C, stir and hydrolyze for 8 hours, filter out the shrimp shells, and add the mass concentration of the obtained shrimp shells 8% hydrochloric acid solution, soak the shrimp shells for 12-32 hours, add a small amount of alkali to neutralize the solution, filter, wash, and dry to obtain 1 ton of chitin products. The filtered liquid can be centrifuged to obtain 0.9 tons of shrimp oil. The remaining liquid was refined, concentrated, and spray-dried to obtain 4 tons of protein powder.

Embodiment 2

[0017] Mix 30 tons of fresh crabs with water at a ratio of 1:1, add them to the steamed reactor, heat to 100°C and keep for 1 hour to ensure that they are fully cooked, then pour cold water into the jacket of the reactor to cool down to 45- At 50°C, add 0.06 ton of compound enzyme composed of collagenase: subtilisin at 1:10, keep the temperature at 45-50°C, stir and hydrolyze for 8-12 hours, filter out the crab shells, and add the obtained crab shells to a concentration of 10% hydrochloric acid solution, soak for 12-32 hours, add a small amount of alkali to neutralize the solution, filter, wash, and dry to obtain 0.9 tons of chitin products. The filtered liquid can be centrifuged to obtain 0.81 tons of crab oil. The remaining liquid was refined, concentrated, and spray-dried to obtain 3.6 tons of protein powder.

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PUM

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Abstract

The invention discloses a method for extracting chitin chitosan, fat and protein powder from shrimp and crab. Shrimp and crab are added with water to be heated and cooked and then be added with mixed enzyme fermentation after cooling; shrimp and crab shells filtered from the fermentation broth is added with acid solution to be soaked, alkali is added to neutralize the solution and then chitin product is obtained after filtering, clearing and drying; fat is obtained after the filtered liquid is centrifuged; the rest liquid is protein liquid and protein powder obtained after concentrating, spraying and drying. The method adopts the combined-enzyme method during the lysis and decomposition of the shrimp and crab and avoids the damage to the protein biological potency of the traditional technique of acidolysis decomposition and three high purity products, namely, chitin, fat and protein powder can be separated and extracted in sequence after the primary fermentation, thus solving the shortage that only one product is extracted in the traditional technique; the comprehensive utilization of the raw material is greatly improved and the production process does not pollute the environment.

Description

Technical field: [0001] The invention relates to a method for extracting chitin, fat and protein powder from shrimps and crabs. Background technique: [0002] Chitin, also known as chitin, scientific name: polyamide glucosamine. It widely exists in the biological world, such as sea crabs, sea shells, turtles and mushrooms and other organisms. However, the "treasures" contained in these natural organisms are not easily absorbed by the human body under normal conditions, nor are they easy to be used in other fields. Only through scientific refinement can they exert their miraculous effects. As early as the 1990s, the medical circles and university nutrition and food research institutions in Japan, the United States, Europe and other places positioned chitin as "one of the six life elements of human beings". In many international academic seminars, chitin chitosan is known as "the body's immune guard", "the most promising functional health food in the 21st century" and so on....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/08A23L17/40
Inventor 任宪君
Owner QINGDAO BETTER BIO TECH
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