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Measurement method for residual solvents in edible vegetable oil

A technique for edible vegetable oil and a determination method, which is applied in the field of determination of solvent residues in edible vegetable oil, and can solve problems such as low detection accuracy

Inactive Publication Date: 2018-07-20
吉林省百利生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the invention is to improve the problem of low detection accuracy in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] Evening primrose oil test sample 1 (with a known concentration of 1.82) was detected for its dissolved residue, and the dissolved residue measured by the above method was 1.82 mg / kg.

Embodiment 2

[0123] Evening primrose oil test sample 2 (with a known concentration of 1.13) was detected for its dissolved residue, and the dissolved residue measured by the above method was 1.13 mg / kg.

Embodiment 3

[0125] Evening primrose oil test sample 3 (with a known concentration of 1.02) was detected for its dissolved residue, and the dissolved residue was measured to be 1.02 mg / kg after the above method was adopted.

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PUM

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Abstract

The invention discloses a measurement method for residual solvents in edible vegetable oil. The measurement method comprises following steps: (1), preparation of a standard solution; (2), preparationof a vegetable oil sample; (3), making of a standard curve; (4), sample measurement. By means of improvement, the residual solvents are increased to 1 mg / kg from original quantitative detection limitbeing 10 mg / kg, and accuracy is higher; by means of change of a packed column and volume of an added solution, so that an obtained result is more accurate, and the method can be taken as supplementarymeans for identifying a pressing method and a leaching method.

Description

technical field [0001] The invention belongs to the field of detection methods, and more specifically relates to a method for measuring residual solvent in edible vegetable oil. Background technique [0002] At present, the edible vegetable oil production industry refers to GB / T 5009.262-2016 "National Food Safety Standard for the Determination of Solvent Residues in Food" for the determination of solvent residues in edible vegetable oils. The detection principle is that the residual solvent in the sample diffuses into the gas phase after remaining in the airtight container. After a certain period of time, the dynamic equilibrium of the gas phase / liquid phase can be reached. The residual solvent content in the upper gas phase is detected by headspace gas chromatography. Calculate the actual content of solvent residue in the sample to be tested. [0003] The detector used is a gas chromatograph with a hydrogen flame ionization detector. The chromatographic column is a packed...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 姜明珠
Owner 吉林省百利生物科技有限公司
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