Method of making standard color models used for judging beef

• US 4,731,209 A
• Filed: 03/24/1986
• Issued: 03/15/1988
• Est. Priority Date: 04/30/1985
• Status: Expired due to Term

• Current Assignee: Agricultural Research Organization, Volcani Center (Government of Israel)
• Original Assignee: National Institute of Advanced Industrial Science and Technology (Government of Japan)
• Inventors: Ikeda, Toshio, Nakai, Hiroyasu, Ozutsumi, Kyohei, Ando, Shiro
• Primary Examiner(s): Silbaugh, Jan H.
• Assistant Examiner(s): DURKIN, JEREMIAH
• Application Number:
  US06/843,311
• Time in Patent Office: 722 Days
• Field of Search: 356/421, 356/422, 356/243, 356/402, 264/222, 264/40.1, 264/78, 264/225, 264/219, 264/220, 264/223, 264/226, 264/245, 264/299, 428/15, 428/16
• US Class Current: 264/40.1
• CPC Class Codes: B29C 39/12 Making multilayered or multicoloured articles B29C39/021 takes precedence
• CPC Class Codes: G01J 3/52 using colour charts
• CPC Class Codes: G01N 21/4785 Standardising light scatter apparatus; Standards therefor
• CPC Class Codes: G01N 33/12 Meat; fish

Abstract

Colors of sections of several beef carcasses are measured and the colors are classified into a predetermined number of grades of tone. Colored silicon plastic sol is poured in a glass cell for each grade, and the color of each plastic sol is matched with the classified beef color. The plastic sol is poured into a female mold having an irregular surface resembling a surface of a section of a beef, and the plastic is taken out from the female mold when it becomes gel.

Claims

1. A method of making several standard color models graded in tone for judging beef, which comprises the steps of:

measuring colors of sections of a plurality of beef carcasses by a colorimeter;

classifying the colors into a predetermined number of grades of tone;

pouring a colored plastic sol in a glass cell for each grade;

measuring each colored plastic sol with a colorimeter and performing color matching with each colored plastic sol to reach the classififed grades of tone;

pouring each color matched colored plastic sol into a female mold having an irregular surface resembling a surface of a section of beef; and

taking out each colored matched colored plastic sol from the female mold when it becomes gel.

2. The method according to claim 1 wherein the plastic is silicon plastic.

3. The method according to claim 1 wherein the irregular surface is formed on the bottom of the female mold.

4. The method according to claim 1, wherein

the step of measuring is performed after encrimsoning.

5. The method according to claim 1, wherein

the step of classifying is performed by analyzing accordng to Hunter'"'"'s color difference formula, with the tone of each of the sections of the beef carcasses being designated by Hunter'"'"'s color values L, a, b.

6. A method for judging beef, comprising the steps of

measuring colors of sections of a plurality of beef carcasses by a colorimeter;

classifying the colors into a predetermined number of grades of shade and tone;

pouring a colored plastic sol in a cell for each grade;

measuring each colored plastic sol with a colorimeter and performing color matching with each colored plastic sol to reach the classified grades of tone;

pouring each color matched colored plastic sol into a female mold having an irregular surface resembling a surface of a section of beef;

removing each color matched colored plastic sol from the female mold when it becomes gel to obtain color models;

placing the color models in a transparent container arranged in order of palest to darkest; and

comparing the shade and tone of beef at a market with the color models, the comparison determining graduations corresponding to the color models and respectively substantially halfway between the color models.