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Method for quickly detecting freshness level of hairtail by using near-infrared spectrum technology

A technology of near-infrared spectroscopy and near-infrared spectrometer, which is applied in the field of food freshness detection and analysis, can solve problems such as complex process and chemical reagent pollution, and achieve the effect of improving resolution and eliminating baseline translation and offset phenomena

Active Publication Date: 2013-12-04
ZHEJIANG MARINE DEV RES INST
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Problems solved by technology

[0004] The present invention aims to overcome the shortcomings of the existing methods for detecting the freshness of hairtails, such as complicated process and chemical reagent pollution, and provides a method for rapidly detecting the freshness of hairtails using near-infrared spectroscopy technology with fast analysis speed and no chemical pollution.

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  • Method for quickly detecting freshness level of hairtail by using near-infrared spectrum technology
  • Method for quickly detecting freshness level of hairtail by using near-infrared spectrum technology
  • Method for quickly detecting freshness level of hairtail by using near-infrared spectrum technology

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] The fresh octopus in this embodiment was purchased from Zhejiang Xingye Group Co., Ltd. Choose fish with shiny body surface, bright red gills, transparent mucus, full eyeballs, and clear corneas.

[0035] The near-infrared spectrometer in this embodiment is a Matrix-F near-infrared spectrometer (Bruker, Germany), which is a vehicle-mounted portable near-infrared detector.

[0036] The evaluation standard of hairtail freshness in the present embodiment refers to the standard SC-T3102-1984 "fresh hairtail" standard of the Ministry of Agriculture, Animal Husbandry and Fisheries of the People's Republic of China, specifically as follows: when the volatile basic nitrogen content measured is less than or equal to 13mg / 100g, it is First-level freshness; when the measured volatile basic nitrogen content is 13~25mg / 100g, it is the second-level f...

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Abstract

The invention discloses a method for quickly detecting freshness of hairtail by using the near-infrared spectrum technology, and aims to overcome defects that a conventional hairtail freshness detection method is complex in process, and the freshness can be polluted by chemical agents. The method adopts the near-infrared spectrum technology and mathematical modeling to establish a model for detecting volatile basic nitrogen content in a hairtail body, then the volatile basic nitrogen content in a sample can be calculated by using the model to analyze a near-infrared spectrum of the hairtail sample, and lastly the freshness of the hairtail can be detected according to the content of the volatile basic nitrogen. The method has the advantage that the analysis speed is high, and chemical pollution can be avoided.

Description

technical field [0001] The invention relates to the field of detection and analysis of food freshness, in particular to a method for rapidly detecting the freshness of hairtail by near-infrared spectroscopy. Background technique [0002] Hairtail, also known as saury, octopus, etc., is an animal of the order Perciformes hairtail. It is one of the important marine economic fish species in China. Its meat is tender and fat, delicious, and has high commercial value. However, because hairtail is rich in unsaturated fatty acids, it is susceptible to spoilage due to biochemical reactions, microbial reproduction, and enzymes during storage. Among them, volatile basic nitrogen (TVBN) is an important indicator to judge the degree of corruption of aquatic products, and is often used to detect the freshness of aquatic products. The higher the content of volatile basic nitrogen, the worse the freshness of aquatic products. For example, the Chinese patent authorization announcement num...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35
Inventor 周宇芳孟志娟杨会成郑斌廖妙飞马华威陈孟
Owner ZHEJIANG MARINE DEV RES INST
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