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A method for detecting the freshness of pork by using faims

A freshness and pork technology, applied in the direction of measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of high operation requirements, high detection cost, complex structure and composition, etc., and achieve good response signal, high sensitivity and resolution High rate, high accuracy effect

Active Publication Date: 2016-08-10
SUZHOU WEIMU INTELLIGENT SYST CO LTD
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the intelligent detection device used to detect the freshness of pork in the prior art, which has complex structure, high operation requirements and high detection cost, and then provides a method for detecting the freshness of pork using FAIMS

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  • A method for detecting the freshness of pork by using faims
  • A method for detecting the freshness of pork by using faims
  • A method for detecting the freshness of pork by using faims

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Embodiment Construction

[0041] 1. The parameters of the FAIMS detector are:

[0042] Ionization source: 63Ni radioactive source;

[0043] Chip migration channel of FAIMS detector: width 35 μm, depth 300 μm;

[0044] Chip migration area of ​​FAIMS detector: length 3.25mm, width 2.5mm;

[0045] The voltage parameters of the FAIMS detector: the radio frequency electric field intensity is 0-60000V / cm, the frequency is 25MHz, the duty ratio of the high field voltage is 0.25, and the DC compensation voltage scanning range is -6-+6V.

[0046] 2. Make the standard curve of trimethylamine:

[0047] Accurately weigh the standard product of trimethylamine hydrochloride (also referred to as "standard product of trimethylamine" directly, Aladdin reagent, its CAS number is 593-81-7), and prepare concentrations of 2, 4, 6. 8ug / mL trimethylamine standard solution, use FAIMS to detect the trimethylamine standard solution of different concentrations, and take the concentration (ug / mL) as the abscissa, and the ion c...

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Abstract

The invention provides a method for detecting the freshness of pork by using FAIMS. The steps include: (1) taking a pork sample to make a pork sample liquid; (2) FAIMS detection: taking a pork sample liquid and adding it to a sampler, controlling the sampler The temperature is 20°C to 90°C to volatilize the pork sample liquid and form an equilibrium gas of trimethylamine, and then pass a carrier gas with a flow rate of 500mL / min to 3500mL / min into the equilibrium gas of trimethylamine to form a mixed gas , input the mixed gas into the FAIMS detector for detection, and control the pressure in the FAIMS detector to be 0.5bar-2.5bar. The method for detecting the freshness of pork by FAIMS described in the present invention obtains the standard for evaluating the freshness of pork by detecting the ion current value of the characteristic peak of trimethylamine in the process of changing the freshness of the pork sample, which has high accuracy and is easy to operate , low detection cost.

Description

technical field [0001] The invention relates to a method for detecting the freshness of pork by using high-field asymmetric waveform ion mobility spectrometry (FAIMS), and belongs to the technical field of food detection. Background technique [0002] Pork consumption has always been an important part of meat food consumption. From the perspective of meat food consumption structure, by 2010, pork accounted for 64% of the total domestic meat production, followed by poultry meat accounted for 20%, beef and mutton production accounted for 10% and 6% respectively, this consumption structure There will be no changes in the short term. In recent years, people's concept of life has changed, health awareness has been continuously enhanced, and the quality and hygiene conditions of meat products have become more and more stringent. Controlling the quality of meat products has become more and more important in our daily life. The freshness of meat The temperature reflects the qualit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/64
Inventor 李灵锋王琦李鑫汪小知李鹏
Owner SUZHOU WEIMU INTELLIGENT SYST CO LTD
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