Preparation of oyster flesh extracts

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 it is concentrated. An alcohol solution is added to the concentrated solution to precipitate out the oyster flesh extracts. The precipitates are dried into dry oyster flesh extracts.

1 . A method of preparing oyster flesh extracts, comprising: 
 an extraction step of placing raw oyster flesh in an extractor with a solution stored therein, closing up said extractor and pressurizing said raw oyster flesh to 1 atm or higher to extract oyster flesh extracts from said raw oyster flesh in a pressurized state, and feeding said oyster flesh extracts into said solution in said extractor,    a concentration step of concentrating an extraction solution with said oyster flesh extracts fed therein,    a precipitation step of adding an alcohol solution to a solution concentrated in said concentration step to precipitate out said oyster flesh extracts, and    a formation step of drying precipitates obtained in said precipitation step into dry oyster flesh extracts.    
   
   
       2 . A method of preparing oyster flesh extracts, comprising: 
 a first extraction step of placing raw oyster flesh in an extractor with a solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a portion of oyster flesh extracts from said raw oyster flesh, and feeding said portion of oyster flesh extracts into said extraction solution,    a first concentration step of concentrating said extraction solution with said portion of oyster flesh extracts fed therein,    a first precipitation step of adding an alcohol solution to a solution concentrated in said first concentration step to precipitate out said 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 an extractor with a solution stored therein, pressurizing said raw oyster flesh to 1 atm or higher in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a pressurized state, and feeding said another portion of oyster flesh extracts in an extraction solution,    a second concentration step of concentrating said extraction solution with said another portion of oyster flesh extracts fed therein,    a second precipitation step of adding an alcohol solution to a solution concentrated in said second concentration step to precipitate out said another portion of oyster flesh extracts, and    a second formation step of drying precipitates obtained in said second precipitation step into dry oyster flesh extracts.    
   
   
       3 . A method of preparing oyster flesh extracts, comprising: 
 an extraction step of placing raw oyster flesh in an extractor with a solution stored therein, closing up said extractor and putting said raw oyster flesh under a reduced pressure of 1 atm or lower to extract oyster flesh extracts from said raw oyster flesh in a reduced-pressure state, and feeding said oyster flesh extracts into said solution in said extractor,    a concentration step of concentrating an extraction solution with said oyster flesh extracts fed therein,    a precipitation step of adding an alcohol solution to a solution concentrated in said concentration step to precipitate out said oyster flesh extracts, and    a formation step of drying precipitates obtained in said precipitation step into dry oyster flesh extracts.    
   
   
       4 . A method of preparing oyster flesh extracts, comprising: 
 a first extraction step of placing raw oyster flesh in an extractor with a solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a portion of oyster flesh extracts from said raw oyster flesh, and feeding said portion of oyster flesh extracts into an extraction solution,    a first concentration step of concentrating said extraction solution with said portion of oyster flesh extracts fed therein,    a first precipitation step of adding an alcohol solution to a solution concentrated in said first concentration step to precipitate out said 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 an extractor with a solution stored therein, putting said raw oyster flesh under a reduced pressure of 1 atm or lower in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a reduced-pressure state, and feeding said another portion of oyster flesh extracts in said extraction solution,    a second concentration step of concentrating said extraction solution with said another portion of oyster flesh extracts fed therein,    a second precipitation step of adding an alcohol solution to a solution concentrated in said second concentration step to precipitate out said another 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 . A method of preparing oyster flesh extracts, comprising: 
 a selective extraction step of selecting either a pressure extraction step of placing raw oyster flesh in an extractor with a solution stored therein, closing up said extractor and pressurizing said raw oyster flesh to 1 atm or higher to extract oyster flesh extracts from said raw oyster flesh in a pressurized state or a reduced-pressure extraction step of putting said raw oyster flesh under a reduced pressure of 1 atm or lower in said extractor to extract oyster flesh extracts from said raw oyster flesh in a reduced-pressure state,    a feed step of extracting oyster flesh extracts from said raw oyster flesh in either said pressure extraction step or said reduced-pressure extraction step, and feeding said oyster flesh extracts into said solution in said extractor,    a concentration step of concentrating an extraction solution with said oyster flesh extracts fed therein,    a precipitation step of adding an alcohol solution to a solution concentrated in said concentration step to precipitate out said oyster flesh extracts, and    a formation step of drying precipitates obtained in said precipitation step into dry oyster flesh extracts.    
   
   
       6 . A method of preparing oyster flesh extracts, comprising: 
 a first extraction step of placing raw oyster flesh in an extractor with a solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a portion of oyster flesh extracts from said raw oyster flesh, and feeding said portion of oyster flesh extracts into said extraction solution,    a first concentration step of concentrating said extraction solution with said portion of oyster flesh extracts fed therein,    a first precipitation step of adding an alcohol solution to a solution concentrated in said first concentration step to precipitate out said portion of oyster flesh extracts,    a first formation step of drying precipitates obtained in said first precipitation step into dry oyster flesh extracts,    a selective extraction step of selecting either a pressure extraction step of again placing said raw oyster flesh used in said first extraction step in an extractor with a solution stored therein, and pressurizing said ray oyster flesh to 1 atm or higher in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a pressurized state or a reduced-pressure extraction step of putting said raw oyster flesh under a reduced pressure of 1 atm or lower in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a reduced-pressure state,    a second feed step of feeding said another portion of oyster flesh extracts obtained in either said pressure extraction step or said reduced-pressure extraction step into an extraction solution,    a second concentration step of concentration said extraction solution with said another portion of oyster flesh extracts fed therein,    a second precipitation step of adding an alcohol solution to a solution concentrated in said second concentration step, and    a second formation step of drying precipitates obtained in said second precipitation step into dry oyster flesh extracts.    
   
   
       7 . A method of preparing oyster flesh extracts, comprising: 
 an extraction step of placing raw oyster flesh in an extractor with a solution stored therein, extracting oyster flesh extracts from said raw oyster flesh in said extractor, and feeding said oyster flesh extracts into said solution in said extractor,    a concentration step of concentrating an extraction solution with said oyster flesh extracts fed therein,    a precipitation step of adding an alcohol solution to a solution concentrated in said concentration step to precipitate out said oyster flesh extracts, and    a formation step of drying precipitates obtained in said precipitation step into dry oyster flesh extracts, wherein:    in said concentration step, said extraction solution is put under a reduced pressure of 1 atm or lower and concentrated by low-temperature heating in a reduced-pressure state, and    in said precipitation step, said alcohol solution is added to said concentrated solution in said concentration step, and the resultant solution is stirred and let stand for separation into a supernatant liquid portion and a precipitate portion at a ratio of 0.5:9.5 to 2.5:7.5.    
   
   
       8 . A method of preparing oyster flesh extracts, comprising: 
 an extraction step of placing raw oyster flesh in an extractor with a solution stored therein, closing up said extractor and pressurizing said raw oyster flesh to 1 atm or higher to extract oyster flesh extracts from said raw oyster flesh in a pressurized state, and feeding said oyster flesh extracts into said solution in said extractor,    a concentration step of concentrating an extraction solution with said oyster flesh extracts fed therein,    a precipitation step of adding an alcohol solution to a solution concentrated in said concentration step to precipitate out said oyster flesh extracts, and    a formation step of drying precipitates obtained in said precipitation step into dry oyster flesh extracts, wherein:    in said concentration step, said extraction solution is put under a reduced pressure of 1 atm or lower and concentrated by low-temperature heating in a reduced-pressure state, and    in said precipitation step, said alcohol solution is added to said concentrated solution in said concentration step, and the resultant solution is stirred and let stand for separation into a supernatant liquid portion and a precipitate portion at a ratio of 0.5:9.5 to 2.5:7.5.    
   
   
       9 . A method of preparing oyster flesh extracts, comprising: 
 a first extraction step of placing raw oyster flesh in an extractor with a solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a portion of oyster flesh extracts from said raw oyster flesh, and feeding said portion of oyster flesh extracts into said extraction solution,    a first concentration step of concentrating said extraction solution with said portion of oyster flesh extracts fed therein,    a first precipitation step of adding an alcohol solution to a solution concentrated in said first concentration step to precipitate out said 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 an extractor with a solution stored therein, pressurizing said raw oyster flesh to a pressure of 1 atm or higher in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a pressurized state, and feeding said another portion of oyster flesh extracts in said extraction solution,    a second concentration step of concentrating an extraction solution with said another portion of oyster flesh extracts fed therein,    a second precipitation step of adding an alcohol solution to a solution concentrated in said second concentration step to precipitate out said another portion of oyster flesh extracts, and    a second formation step of drying precipitates obtained in said second precipitation step into dry oyster flesh extracts, wherein:    in each of said concentration steps, said extraction solution is put under a reduced pressure of 1 atm or lower and concentrated by low-temperature heating in a reduced-pressure state, and    in each of said precipitation steps, said alcohol solution is added to said concentrated solution in said concentration step, and the resultant solution is stirred and let stand for separation into a supernatant liquid portion and a precipitate portion at a ratio of 0.5:9.5 to 2.5:7.5.    
   
   
       10 . A method of preparing oyster flesh extracts, comprising: 
 an extraction step of placing raw oyster flesh in an extractor with a solution stored therein, closing up said extractor and putting said ray oyster flesh under a reduced pressure of 1 atm or lower to extract oyster flesh extracts from said raw oyster flesh in a reduced-pressure state, and feeding said oyster flesh extracts into said solution in said extractor,    a concentration step of concentrating an extraction solution with said oyster flesh extracts fed therein,    a precipitation step of adding an alcohol solution to a solution concentrated in said concentration step to precipitate out said oyster flesh extracts, and    a formation step of drying precipitates obtained in said precipitation step into dry oyster flesh extracts, wherein:    in said concentration step, said extraction solution is put under a reduced pressure of 1 atm or lower and concentrated by low-temperature heating in a reduced-pressure state, and    in said precipitation step, said alcohol solution is added to said concentrated solution in said concentration step, and the resultant solution is stirred and let stand for separation into a supernatant liquid portion and a precipitate portion at a ratio of 0.5:9.5 to 2.5:7.5.    
   
   
       11 . A method of preparing oyster flesh extracts, comprising: 
 a first extraction step of placing raw oyster flesh in an extractor with a solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a portion of oyster flesh extracts from said raw oyster flesh, and feeding said portion of oyster flesh extracts into an extraction solution,    a first concentration step of concentrating said extraction solution with said portion of oyster flesh extracts fed therein,    a first precipitation step of adding an alcohol solution to a solution concentrated in said first concentration step to precipitate out said 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 an extractor with a solution stored therein, putting said raw oyster flesh under a reduced pressure of 1 atm or lower in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a reduced-pressure state, and feeding said another portion of oyster flesh extracts in said extraction solution,    a second concentration step of concentrating said extraction solution with said another portion of oyster flesh extracts fed therein,    a second precipitation step of adding an alcohol solution to a solution concentrated in said second concentration step to precipitate out said another portion of oyster flesh extracts, and    a second formation step of drying precipitates obtained in said second precipitation step into dry oyster flesh extracts, wherein:    in each of said concentration steps, said extraction solution is put under a reduced pressure of 1 atm or lower and concentrated by low-temperature heating in a reduced-pressure state, and    in each of said precipitation steps, said alcohol solution is added to said concentrated solution in said concentration step, and the resultant solution is stirred and let stand for separation into a supernatant liquid portion and a precipitate portion at a ratio of 0.5:9.5 to 2.5:7.5.    
   
   
       12 . A method of preparing oyster flesh extracts, comprising: 
 a selective extraction step of selecting either a pressure extraction step of placing raw oyster flesh in an extractor with a solution stored therein, closing up said extractor and pressurizing said raw oyster flesh to 1 atm or higher to extract oyster flesh extracts from said raw oyster flesh in a pressurized state or a reduced-pressure extraction step of putting said raw oyster flesh under a reduced pressure of 1 atm or lower in said extractor to extract oyster flesh extracts from said raw oyster flesh in a reduced-pressure state,    a feed step of extracting oyster flesh extracts from said raw oyster flesh in either said pressure extraction step or said reduced-pressure extraction step, and feeding said oyster flesh extracts into said solution in said extractor,    a concentration step of concentrating an extraction solution with said oyster flesh extracts fed therein,    a precipitation step of adding an alcohol solution to a solution concentrated in said concentration step to precipitate out said oyster flesh extracts, and    a formation step of drying precipitates obtained in said precipitation step into dry oyster flesh extracts, wherein:    in said concentration step, said extraction solution is put under a reduced pressure of 1 atm or lower and concentrated by low-temperature heating in a reduced-pressure state, and    in said precipitation step, said alcohol solution is added to said concentrated solution in said concentration step, and the resultant solution is stirred and let stand for separation into a supernatant liquid portion and a precipitate portion at a ratio of 0.5:9.5 to 2.5:7.5.    
   
   
       13 . A method of preparing oyster flesh extracts, comprising: 
 a first extraction step of placing raw oyster flesh in an extractor with a solution stored therein, and putting said raw oyster flesh in a normal pressure state in said extractor to extract a portion of oyster flesh extracts from said raw oyster flesh, and feeding said portion of oyster flesh extracts into said extraction solution,    a first concentration step of concentrating said extraction solution with said portion of oyster flesh extracts fed therein,    a first precipitation step of adding an alcohol solution to a solution concentrated in said first concentration step to precipitate out said portion of oyster flesh extracts,    a first formation step of drying precipitates obtained in said first precipitation step into dry oyster flesh extracts,    a selective extraction step of selecting either a pressure extraction step of again placing said raw oyster flesh used in said first extraction step in an extractor with a solution stored therein, and pressurizing said raw oyster flesh to 1 atm or higher in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a pressurized state or a reduced-pressure extraction step of putting said ray oyster flesh under a reduced pressure of 1 atm or lower in said extractor to extract another portion of oyster flesh extracts from said raw oyster flesh in a reduced-pressure state,    a second feed step of feeding said another portion of oyster flesh extracts obtained in either said pressure extraction step or said reduced-pressure extraction step into an extraction solution,    a second concentration step of concentration said extraction solution with said another portion of oyster flesh extracts fed therein,    a second precipitation step of adding an alcohol solution to a solution concentrated in said second concentration step, and    a second formation step of drying precipitates obtained in said second precipitation step into dry oyster flesh extracts, wherein:    in each of said concentration steps, said extraction solution is put under a reduced pressure of 1 atm or lower and concentrated by low-temperature heating in a reduced-pressure state, and    in each of said precipitation steps, said alcohol solution is added to said concentrated solution in said concentration step, and the resultant solution is stirred and let stand for separation into a supernatant liquid portion and a precipitate portion at a ratio of 0.5:9.5 to 2.5:7.5.