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US 2011/0033593 A1Published application
Preparation of oyster flesh extracts
AssigneeWatanabe Oyster Laboratory Co., Ltd.
InventorsMitsugu Watanabe, Takayuki Watanabe, Tomio Watanabe
Life of this patent
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Abstract
The invention relates to the preparation of oyster flesh extracts. Raw oyster flesh is placed in an extractor with a solution stored in it. The extractor is closed up tight and pressurized to 1 atm or higher to extract oyster flesh extracts from the raw oyster flesh, and they are fed into the solution in the extractor. An extraction solution with the oyster flesh extracts fed in concentrated solution to precipitate out the oyster flesh extracts. The precipitates are dried into dry oyster flesh extracts.
Claims8
A method of preparing oyster flesh extracts, comprising:
- a first extraction step of placing raw oyster flesh in an extractor with a first extraction solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a first portion of oyster flesh extracts from said raw oyster flesh, and feeding said first portion of oyster flesh extracts into said first extraction solution,
- a first concentration step of concentrating said first extraction solution with said first portion of oyster flesh extracts fed therein under a reduced pressure in a vessel and evaporating the water content at a temperature lower than 60° C., to produce a first concentrated solution,
- a first precipitation step of adding a first alcohol solution to said first concentrated solution to precipitate out said first portion of oyster flesh extracts,
- a first formation step of drying precipitates obtained in said first precipitation step into dry oyster flesh extracts,
- a second extraction step of again placing said raw oyster flesh used in said first extraction step in said extractor with a second extraction solution stored therein, pressurizing said raw oyster flesh to 1.1 atm to 2.5 atm in said extractor for 5 to 60 minutes while at a temperature of 75° C. to 120° C. to extract a second portion of oyster flesh extracts from said raw oyster flesh in a pressurized state, and feeding said second portion of oyster flesh extracts in said second extraction solution,
- a second concentration step of concentrating said second extraction solution with said second portion of oyster flesh extracts fed therein to produce a second concentrated solution, in said second extraction step putting the second extraction solution under a reduced pressure in the vessel and evaporating the water content while at a temperature lower than 60° C.,
- a second precipitation step of adding a second alcohol solution to said second concentrated solution to precipitate out said second portion of oyster flesh extracts, and
- a second formation step of drying precipitates obtained in said second precipitation step into dry oyster flesh extracts.
5 more elements
A method of preparing oyster flesh extracts, comprising:
- a first extraction step of placing raw oyster flesh in an extractor with a first extraction solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a first portion of oyster flesh extracts from said raw oyster flesh, and feeding said first portion of oyster flesh extracts into said first extraction solution,
- a first concentration step of concentrating said first extraction solution with said first portion of oyster flesh extracts fed therein under a reduced pressure in a vessel and evaporating the water content at a temperature lower than 60° C., to produce a first concentrated solution,
- a first precipitation step of adding a first alcohol solution to said first concentrated solution to precipitate out said first portion of oyster flesh extracts,
- a first formation step of drying precipitates obtained in said first precipitation step into dry oyster flesh extracts,
- a second extraction step of again placing said raw oyster flesh used in said first extraction step in said extractor with a second extraction solution stored therein, pressurizing said raw oyster flesh to 0.01 atm to 0.99 atm in said extractor for 30 to 70 minutes to extract a second portion of oyster flesh extracts from said raw oyster flesh in a pressurized state, and feeding said second portion of oyster flesh extracts in said second extraction solution,
- a second concentration step of concentrating said second extraction solution with said second portion of oyster flesh extracts fed therein to produce a second concentrated solution, in said second extraction step putting the second extraction solution under a reduced pressure in the vessel and evaporating the water content while at a temperature lower than 60° C.,
- a second precipitation step of adding a second alcohol solution to said second concentrated solution to precipitate out said second portion of oyster flesh extracts, and
- a second formation step of drying precipitates obtained in said second precipitation step into dry oyster flesh extracts.
5 more elements
Dependencies are inferred from the claim text.