Method and device for detecting/removing crustacean with untorn shell

A detection device and animal technology, applied in the field of the present invention, can solve problems such as non-discovery, damage to consumers' taste, and decline in commercial value

Inactive Publication Date: 2002-12-25
NICHIREI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even if there is a piece of residual shell on the flesh part of the shellfish before heat treatment, it is difficult to distinguish it visually from the flesh part, so that the residual shell is sometimes overlooked or not found
If residual shells are mixed in processed or retort food, it will damage the taste of the consumer and reduce its commercial value

Method used

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  • Method and device for detecting/removing crustacean with untorn shell
  • Method and device for detecting/removing crustacean with untorn shell
  • Method and device for detecting/removing crustacean with untorn shell

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Embodiment Construction

[0018] An embodiment is described below in conjunction with the result of a real experiment. In this embodiment, check whether there are residual shells on the shrimp after shelling, and remove them if there are residual shells. In the experiment, the shelled frozen shrimp (fatback shrimp) used as a sample was thawed and most of the shells were peeled off by hand, leaving only a part of the shell at the joint just in front of the tail. The size of the shelled frozen shrimp is: 100-200 shrimps per pound, and the average size of the remaining shell is about 8mm×6mm.

[0019] First, light from a general light source (near white light) having three peaks of 440 nm, 550 nm, and 670 nm was irradiated onto each sample using a light irradiation device with a light quantity of 1000 μW / cm2. Then, perform a visual inspection to see if the shell can be distinguished from the flesh. However, it is impossible to distinguish the shell from the flesh. Images of each sample were then taken w...

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Abstract

A detection / removal method and apparatus for checking whether shells remain on crustaceans such as shrimps or crabs, from which the shells should be stripped. The device comprises: an irradiation device (1) for irradiating light in a specific wavelength range onto a crustacean (20) whose shell has been peeled off; a CCD camera (40) arranged to face the crustacean; and a Means (41) for determining whether unstripped shells remain on the crustacean based on information on fluorescence intensity derived from images captured by said CCD camera, based on information derived from said means (41) , crustaceans with unshucked shells on them will be excluded by the exclusion device (5, 6, 7).

Description

Background of the invention [0001] The present invention relates to a method for detecting and removing unpeeled residual shells on shellfish and a device for carrying out the method, in particular to a method suitable for detecting shellfish such as shrimps and crabs with residual shells on their flesh after shelling A method of detection and elimination and an apparatus for implementing the method. It should be noted that the expression of the term "shrimp" in this application includes all shrimps and shellfish similar to shrimps such as lobsters and prawns. [0002] With the growing popularity of the food service industry, a large variety of food ingredients are increasingly processed in a standard manner in food processing plants today. This tendency is also present in shellfish such as shrimp or crab. That is, a large amount of shucked shellfish is sent to a food processing factory to be used as a raw material (food material) of various processed foods or retort pouch f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A22C29/00A22C29/02
CPCA22C29/00A22C29/021A22C29/005A22C29/02
Inventor 金谷昌敏新井本昌宏
Owner NICHIREI CORP
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