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Method for qualitatively and quantitatively analyzing edible oil and further detecting hogwash oil

A quantitative analysis, edible oil technology, applied in analytical materials, material excitation analysis, color/spectral property measurement, etc., can solve problems such as insufficient identification and identification of edible oil, impracticality, etc.

Inactive Publication Date: 2013-11-20
骆驰 +1
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Problems solved by technology

However, results from gas chromatographic analysis alone are usually not sufficient to identify and characterize edible oils
Furthermore, this method is not practical for time and cost reasons when analyzing large numbers of samples

Method used

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  • Method for qualitatively and quantitatively analyzing edible oil and further detecting hogwash oil
  • Method for qualitatively and quantitatively analyzing edible oil and further detecting hogwash oil
  • Method for qualitatively and quantitatively analyzing edible oil and further detecting hogwash oil

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Embodiment Construction

[0019] The FT-NIR spectrum covers 14000-4000cm -1 Or within the wavelength range of 0.7-2.5μm. A common method is to place the sample oil in a small glass test tube, which is placed in the optical path of the NIR instrument, and the sample spectrum is acquired under transmission mode illumination. Fatty acid molecules have weak near-infrared absorption, so the scanned sample does not need to be diluted or processed. The near-infrared absorption peak of edible oil is very broad and lacks characteristics, so its qualitative and quantitative analysis is carried out by establishing a chemometric model.

[0020] The FT-IR spectrum covers 4000-400cm -1 Or within the wavelength range of 2.5-25μm. The FT-IR spectrum of edible oils is measured by a special technique called attenuated total reflectance (ATR). ATR spectroscopy, also known as internal reflectance spectroscopy, is a versatile, and in some cases non-destructive, technique that can be used to acquire FT-IR of a variety o...

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Abstract

The invention discloses a method for qualitatively and quantitatively analyzing edible oil and further detecting hogwash oil. The method comprises the following steps of: establishing a fatty acid multivariable model of an oil sample by utilizing FT-NIR (Fourier Transform-Near Infrared), FT-IR (Fourier Transform-Infrared) or Raman spectrum data; generating quantitative and qualitative marking parameters by the multivariable model, wherein a modularized database is formed by the marking parameters; finally, qualitatively and quantitatively analyzing the edible oil and further detecting the hogwash oil by comprehensively analyzing one or more quantitative and qualitative marking parameters in the database. According to the method disclosed by the invention, an initiated 'mixed edible oil scoring pattern' method can be used for roughly and rapidly judging components of the mixed edible oil or the suspected hogwash oil.

Description

technical field [0001] The invention belongs to the field of food detection and relates to a method for qualitatively and quantitatively analyzing edible oil and further detecting gutter oil. Background technique [0002] Edible oil (including vegetable oil and animal oil) is an essential nutrient for human survival. Its production, circulation and consumption, and even the recycling of waste oil have a huge impact on human well-being. It has been reported that waste oil recycled from restaurants and other sources has entered China's edible oil supply chain (the amount may be as high as 10% of the total annual consumption), which has aroused widespread concern from government regulators and ordinary consumers. [0003] Identifying and differentiating gutter oil from cooking oil has proven to be an extremely challenging endeavor in the scientific community. Several factors contribute to this phenomenon. First, the sources of waste oil are very diverse. Second, the chemical...

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Application Information

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IPC IPC(8): G01N21/35G01N21/65G01N33/03
CPCG01N21/3577G01N21/359G01N21/65G01N2201/1293
Inventor 骆驰李维庸
Owner 骆驰
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