Non-destructive online preservation method of oysters

Abstract

The invention relates to the technical field of oyster preservation, and particularly relates to a non-destructive online preservation method of oysters. The method comprises the following steps: removing shells from fresh alive oysters to obtain oyster meat, washing the oyster meat in a solution A, and soaking the oyster meat in a preservative; wrapping up the soaked oyster meat with a plastic bag after soaking, and irregularly sampling the oyster meat under a normal temperature condition; and testing the freshness of the oyster meat with a near-infrared spectrometer to quickly differentiatewhether the oyster meat is fresh or not, and performing separate storage. The method can be used for realizing normal-temperature preservation of oysters, cannot cause secondary pollution of oysters or destroy oyster tissues, is simple in operation, does not need sample treatment or expensive instrument, and can quickly differentiate the oyster meat quality.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of fresh-keeping oysters, in particular to an online fresh-keeping method without damage to oysters. [0003] 【Background technique】 [0004] Oyster, commonly known as oyster, also known as oyster yellow and sea oyster, is regarded as a delicious sea treasure and a bodybuilding food because of its delicious taste and complete nutrition. Therefore, among many marine treasures, many people have a soft spot for oysters. Due to the tenderness of oyster meat, if it is not properly preserved after harvest, it will deteriorate within 2 days. At present, domestic research on oyster preservation is frozen storage and controlled atmosphere storage. However, these two methods of storing oysters still have complex operations and a short shelf life. Technical defects; the general preservation period is about 7 days; although some preservatives are currently used in oyster preservation, due to their unreasonable ...

AI Technical Summary

Problems solved by technology

Due to the tenderness of oyster meat, if it is not properly preserved after harvest, it will deteriorate within 2 days. At present, domestic research on oyster preservation is frozen storage and controlled atmosphere storage. However, these two methods of storing oysters still have complex operations and a short shelf life. Technical defects; the general preservation period is about 7 days; although some preservatives are currently used in oyster preservation, due to their unreasonable ratio, the shelf life is often short, and oysters may cause secondary pollution. Freshness is the most important thing when adding other biological preservatives, which may cause it to be mixed with preservatives and taste bad; the index for measuring the freshness of oysters is TVB-N, which usually requires crushing of materials. The chemical method used in the determination will destroy the tissue structure of the oyster, the measurement process is troublesome, and it will also damage the oyster, which is not conducive to freshness monitoring

The applicant of this patent used the electronic nose method to test the freshness of oysters in the scheme "A Method for Preserving Oysters" filed on the same day. However, the freshness preservation agent of this scheme cannot realize the freshness of oysters at room temperature. Therefore, the applicant carried out After further research, it was found that adding the egg white of sea duck eggs to the preservative can prolong the shelf life of aquatic products to a certain extent, but in continuous practice, it was found that the use of sea duck eggs in the preservative would cause misjudgment by the electronic nose, resulting in ineffective detection The freshness of aquatic products, therefore, it is necessary to improve the freshness preservation method of oysters, which can simply and conveniently carry out freshness preservation and non-damage monitoring of oysters, and at the same time, the freshness preservation method will not damage the taste of oysters

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