Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for identifying plant-derived waste oil using trace fatty acids

A plant-derived, fatty acid technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as missed judgments, and achieve the effect of improving accuracy and specificity

Active Publication Date: 2015-11-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If we only start from the identification method of animal-derived waste oil, there may be missed judgments

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for identifying plant-derived waste oil using trace fatty acids
  • Method for identifying plant-derived waste oil using trace fatty acids
  • Method for identifying plant-derived waste oil using trace fatty acids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 0.06g of soybean oil, corn oil, peanut oil and other natural vegetable oils and the heated samples of the first three natural vegetable oils and place them in disposable polytetrafluoroethylene tubes, and then add 150 μL of 2mol / L potassium hydroxide methanol solution to them respectively, and then respectively Add 1mL of n-hexane, shake well, and let stand to separate layers. Take 1 μL of the supernatant, respectively, for gas chromatography and multidimensional gas chromatography for analysis. After the analysis by the instrument, the normalization method was used to process the data, and the relative content (M0) of the saturated linear pentadecyl fatty acid methyl ester was recorded on the gas chromatograph. Then combined with the peak area ratio (A1 / A0) of the isomerized 15-carbon fatty acid methyl ester and the saturated straight-chain 15-carbon fatty acid methyl ester in the multidimensional gas chromatograph, the relative ratio of the isomerized 15-carbon f...

Embodiment 2

[0028] Take 0.06g of oil samples from different sources and place them in disposable polytetrafluoroethylene tubes, then add 150μL of 2mol / L potassium hydroxide methanol solution to it, and then add 1mL of n-hexane respectively, after fully shaking, let stand to separate Floor. Take 1 μL of the supernatant, respectively, for gas chromatography and multidimensional gas chromatography for analysis. After the analysis by the instrument, the normalization method was used to process the data, and the relative content (M0) of the saturated linear pentadecyl fatty acid methyl ester was recorded on the gas chromatograph. Then combined with the peak area ratio (A1 / A0) of the isomerized 15-carbon fatty acid methyl ester and the saturated straight-chain 15-carbon fatty acid methyl ester in the multidimensional gas chromatograph, the relative ratio of the isomerized 15-carbon fatty acid methyl ester in different animal oils was calculated. Content (M1), M1=A1 / A0×M0.

[0029] According t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a novel method for identifying plant-derived waste oil by adopting trace fatty acid. Characteristic indicators for identifying the plant-derived waste oil are determined and judgment indexes relevant to the characteristic indicators are made by contrasting the change of the trace fatty acid in edible oil before and after heating and combining the trace fatty acid content in a typical waste oil sample. According to the constructed judgment indexes, the plant-derived waste oil can be effectively identified. The method has the advantages of being simple in operation, high in accuracy, high in specificity and easy in popularization and supplies powerful method supplementation to waste oil detection, and the accuracy of the waste oil detection is improved.

Description

technical field [0001] The invention relates to a new method for identifying plant-derived waste oil. The method provides characteristic indicators for distinguishing plant-derived waste oil, and formulates corresponding judgment basis. The establishment of this method will help to improve the current situation of waste oil identification in my country and make up for the shortcomings of existing waste oil identification methods. Combining this method with the identification method of animal-derived waste oil will effectively improve the accuracy and specificity of the identification method. Background technique [0002] Waste oil is a general concept, which is a general term for all kinds of low-quality oils, generally including hogwash oil, waste frying oil, waste oil produced by food and related enterprises, etc. After decolorization, washing and deodorization, these waste oils are sold into the market by unscrupulous traders, and huge profits can be obtained. However, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 陈吉平金静田玉增王龙星邹黎黎王淑秋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI